CN201526992U

CN201526992U - Controllable straw combustion furnace

Info

Publication number: CN201526992U
Application number: CN2009200162937U
Authority: CN
Inventors: 康景祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-13
Filing date: 2009-08-13
Publication date: 2010-07-14
Anticipated expiration: 2019-08-13

Abstract

The utility model relates to a controllable straw combustion furnace, which comprises a furnace body, a furnace plate, a boiler placing opening, an ash storage bin, an ash removal opening and a smoke outlet. The controllable straw combustion furnace is characterized in that an independent feed bin and a spiral feeding device connected with the feed bin are arranged outside the furnace body; a feeding speed control device is arranged on the furnace body; a built-in combustor is arranged in the front portion of the furnace body; a combustion fan and a heating fan are installed inside a rear cavity of the furnace body; the furnace plate is arranged on the upper portion of the furnace body; an air heating device is arranged above the rear portion of the furnace plate; air passing through the periphery of the furnace plate enters the air heating device together with smoke after combustion for heat exchange; and produced hot air exhausted by a hot air outlet pipe is delivered to places in need through pipelines. The controllable straw combustion furnace provided with a waste heat using device has the advantages of high heat efficiency, no conversion heat loss, stable combustion, fine adjustability, comparatively loose requirements on moisture for raw materials, capability of being combusted when moisture is within 35%, multiple purposes by one furnace, convenience and tangible benefits.

Description

Controlled stalk combustion furance

Technical field:

The utility model relates to a kind of stalk combustion furance, relates to a kind of controlled stalk combustion furance that can effectively control fired state specifically.

Background technology:

The type of furnace that with the biomass straw is fuel at present roughly has two big classes, and a class is solid-state burning, and another kind of is gaseous combustion, as gasification furnace, methane-generating pit, biogas jar etc.The shortcoming of gaseous combustion is to have energy loss in the states of matter conversion, the difficult control of the process of conversion reaction simultaneously, combustion instability.Gasification furnace is very tight to the moisture content requirement of raw material, and moisture content is difficult to light greater than 15% raw material aerogenesis, and methane-generating pit, biogas jar etc. use difficulty in the winter time.Though solid-state burning does not have above-mentioned shortcoming, the existing solid-state burning type of furnace all belongs to utilizes the gravity of material own to slide into voluntarily that burner hearth burns, and can not effectively control fired state, and the thermal efficiency is low, and waste heat can not be fully used.

Summary of the invention:

Defective at existing stalk combustion furance existence, the utility model provides a kind of can control fired state by regulating raw material supplying speed and combustion air volume, and can make full use of waste heat, makes the thermal efficiency higher, purposes is more, has more the controlled stalk combustion furance of practicality.

Solving the problems of the technologies described above the concrete technical scheme of being taked is: a kind of controlled stalk combustion furance, comprise body of heater, stone or metal plate for standing a stove on as a precaution against fire, put the pot mouth, ash-storing bin, cleaning door, outlet flue, it is characterized in that outside body of heater 5, being provided with independently a feed bin 1 and the helixes feed equipment 2 that is connected with feed bin 1, helixes feed equipment 2 is provided with control delivery rate device 3, chamber, body of heater 5 front and back separates with dividing plate 53, body of heater 5 ante-chamber built-in combustion devices 6, helixes feed equipment 2 is fixed on the body of heater 5 with burner 6, ash-storing bin 51 is located in body of heater 5 ante-chambers, cleaning door 54 is located at body of heater 5 ante-chamber bottoms, combustion fan 4 and Heagting fan 8 are housed in the body of heater back cavity 52, stone or metal plate for standing a stove on as a precaution against fire 7 is arranged on the top of body of heater 5 and is provided with puts pot mouth 72, relative with the top of burner 6, around the stone or metal plate for standing a stove on as a precaution against fire 7 is hollow cavity 73, top, stone or metal plate for standing a stove on as a precaution against fire 7 rear portions is provided with air heating apparatus 9, the air of process enters air heating apparatus 9 with gas fume after burning and carries out heat exchange around the stone or metal plate for standing a stove on as a precaution against fire 7, its generation hot-air discharge by hot blast fairlead 91, being sent to by pipeline needs part.

In this programme, the rotating speed of helixes feed equipment 2 is controlled, it is realized by following structure: helical axis on the ratchet 31 of control delivery rate device 3 and the helixes feed equipment 2 21 links together by key, control delivery rate device 3 is equipped with can be around the fork 32 of helical axis 21 rotations, ratchet 33 is contained on the fork 32, electromagnet 34 is fixed on the fixed head 35, fixed head 35 usefulness screws are contained in the end of helixes feed equipment 2, electromagnet 34 energising backs are inhaled movable pendulum bar 32 drive ratchets 33 promotion ratchets 31 and are rotated a tooth, electromagnet 34 outages, fork 32 drops to reference column 36 by deadweight to be stopped, prepare action next time, the power of electromagnet 34 is the voltage of capacitor discharge, and the discharge frequency of capacitor is subjected to change the control of the on-off circuit 37 of pulse frequency

In this programme, the top of helixes feed equipment 2 is provided with the electromagnetic oscillation device 22 that prevents that magazine feed from interrupting.

In this programme, burner 6 is formed with the deep camber variable diameter passage 61 that is positioned at the bottom by being positioned at the combustion chamber 62 that top has air compartment, wind hole and combustion chamber.

In this programme, air heating apparatus 9 is again a residual heat using device simultaneously, form by 6 parts, inner core 94 is the tab style structure with outer core 93, hot blast efferent duct 91 is connected on the outer core 93 with inner core 94 usefulness screws, and outlet flue 96, ash removing opening 92 are cast together with outer core 93, and shell 95 overlaps outside outside the core 93, by the seam location, outer core 93 is screwed on stone or metal plate for standing a stove on as a precaution against fire 7 by the seam location.

Good effect of the present utility model: 1, thermal efficiency height, the no transition heat loss and the use device that has surplus heat; 2, flameholding, controllability is good; 3, looser to the moisture content requirement of raw material, moisture content is equal burning within 35%; 4, multi-use, convenient material benefit, especially hot-air heating can solve the hard nut to crack that peasant household's kitchen in winter steam is big, visibility is low, and can purify the air of a room.1 kilogram of air-dry stalk material incendivity is 20 minutes after tested, boiled 2 Hu Shui; The waste heat of three meals in a day can make and be incubated 5 ℃ of room temperature raisings preferably, than general stalk combustion furance fuel saving 30%.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the profile of air heating apparatus A-A;

Fig. 4 is the utility model flue gas and the flow schematic diagram of air in air heating apparatus;

Fig. 5 is control delivery rate apparatus structure schematic diagram.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described further.Fig. 1, Fig. 2, Fig. 3, shown in Figure 5, a kind of controlled stalk combustion furance, comprise body of heater, stone or metal plate for standing a stove on as a precaution against fire, put pot mouth, ash-storing bin, cleaning door, exhanst gas outlet, it is characterized in that being provided with outside body of heater 5 independently a feed bin 1 and the helixes feed equipment 2 that is connected with feed bin 1, the shell of helixes feed equipment 2 is welded on or is contained on the bunker platform 11 by screw; Helixes feed equipment 2 is provided with control delivery rate device 3, the rotating speed of helixes feed equipment 2 is controlled, it is realized by following structure: helical axis on the ratchet 31 of control delivery rate device 3 and the helixes feed equipment 2 21 links together by key, control delivery rate device 3 is equipped with can be around the fork 32 of helical axis 21 rotations, ratchet 33 is contained on the fork 32, electromagnet 34 is fixed on the fixed head 35, fixed head 35 usefulness screws are contained in the end of helixes feed equipment 2, electromagnet 34 energising backs are inhaled movable pendulum bar 32 drive ratchets 33 promotion ratchets 31 and are rotated a tooth, electromagnet 34 outages, fork 32 drops to reference column 36 by deadweight to be stopped, prepare action next time, the power of electromagnet 34 is the voltage of capacitor discharge, and the discharge frequency of capacitor is subjected to change the control of the on-off circuit 37 of pulse frequency.The advantage of this device is: 1, utilize the heavy current of capacitor discharge to make electromagnet produce stronger magnetic field suction movable pendulum bar.2, can under very low pulse frequency, regulate, and keep driving force constant.3, can save motor and deceleration device.Certainly this stove also can adopt the scheme of buncher cooperation reductor, but cost is higher.In order to prevent that the feed bin 1 interior built on stilts feed that makes of material from interrupting, the utility model is taked two measures, and the first is designed to taper with feed bin 1, and is big down little, is difficult for built on stilts; It two is provided with electromagnetic oscillation device 22 above helixes feed equipment 2, can set how long vibrate the length that once reaches time of vibration according to the actual conditions of using, and electromagnetic oscillation device 22 is contained on the bunker platform 11 by screw.Chamber, body of heater 5 front and back separates with dividing plate 53, body of heater 5 ante-chamber built-in combustion devices 6, helixes feed equipment 2 and burner 6 are fixed on tapping on the body of heater 5 by flange 23, the combustion chamber 62 of burner 6 tops for combustion air can be provided, in establish air compartment, wind hole and combustion chamber, the mixed combustion here of fuel and combustion air, the combustion intensity size also cooperates the adjusting of combustion-supporting air door 41 except that the control delivery rate; Burner 6 bottoms are deep camber variable diameter passage 61, and She Ji purpose is in order to reduce the mobile resistance of raw material and to change the direction that raw material flows, fuel being introduced the combustion chamber like this; The combustion chamber 62 on burner 6 tops and the deep camber variable diameter passage of bottom 61 are cast or are made one with iron plate.Ash-storing bin 51 is located in body of heater 5 ante-chambers, cleaning door 54 is located at body of heater 5 ante-chamber bottoms, stone or metal plate for standing a stove on as a precaution against fire 7 is arranged on the top of body of heater 5 and is provided with puts pot mouth 72, top over against burner 6, locate by seam between stone or metal plate for standing a stove on as a precaution against fire 7 and the body of heater 5, fire door 72 puts that pot can be made for meal, the usefulness of heating up water, but puts water in hot water heat exchanger 10 heating water tank, for the usefulness of bathing; Around the stone or metal plate for standing a stove on as a precaution against fire 7 is hollow cavity 73, and combustion fan 4 and Heagting fan 8 are housed in the body of heater back cavity 52, and combustion fan 4 is connected with burner 6 by pipeline, and Heagting fan 8 is connected with the hollow cavity 73 of stone or metal plate for standing a stove on as a precaution against fire by pipeline.Top, stone or metal plate for standing a stove on as a precaution against fire 7 rear portions is provided with air heating apparatus 9, hollow cavity 73 enters air heating apparatus 9 through the air of preheatings with gas fume after burning and carries out heat exchange around the stone or metal plate for standing a stove on as a precaution against fire, its generation hot-air discharge by hot blast fairlead 91, be sent to the room that needs heating or drying chamber, case by pipeline.Air heating apparatus 9 is designed to the multi-cavity body, the tab style structure, the air heating apparatus heat exchange area of this structure is big, combine and formed heat-exchange system efficiently with the hollow cavity 73 around the stone or metal plate for standing a stove on as a precaution against fire, air heating apparatus 9 is again a residual heat using device simultaneously, form by 6 parts, inner core 94 is designed to tab style with the structure of outer core 93, hot blast efferent duct 91 is connected on the outer core 93 with inner core 94 usefulness screws, outlet flue 96, ash removing opening 92 is cast together with outer core 93, shell 95 overlaps the core 93 outer seam location of leaning on outside, and outer core 93 is screwed on stone or metal plate for standing a stove on as a precaution against fire 7 by the seam location.Mobile in air heating apparatus 9 of flue gas and air seen Fig. 4, and heavy line is a compressed air glide path among the figure, and thick dashed line is the flow of flue gas route, and as can be seen from Figure 4, flue gas and air pass through the inside and outside core of flap-like respectively and carry out heat exchange.This device adopts the casting method moulding, and the one, reduce the welding difficulty, the 2nd, foundry goods heat conduction is good.

This stove using method: stalk is cut into＜and the 3CM segment is standby, be loaded on during use in the feed bin 1, starting helixes feed equipment 2 makes combustion chamber 6 enter a little fuel, with fire-lighter it is ignited, start combustion fan 4 and reconcile air quantity and delivery rate makes it to reach the fired state that needs, then start the heating blower fan as need heating.During blowing out, close down helixes feed equipment 2 and combustion fan 4 gets final product, combustion chamber internal combustion thing can be extinguished with little water as Long-time Shut-down.

Claims

1. controlled stalk combustion furance, comprise body of heater, stone or metal plate for standing a stove on as a precaution against fire, put the pot mouth, ash-storing bin, cleaning door, outlet flue, it is characterized in that outside body of heater (5), being provided with independently a feed bin (1) and the helixes feed equipment (2) that is connected with feed bin (1), helixes feed equipment (2) is provided with control delivery rate device (3), the chamber separates with dividing plate (53) before and after the body of heater (5), body of heater (5) ante-chamber built-in combustion device (6), helixes feed equipment (2) is fixed on the body of heater (5) with burner (6), ash-storing bin (51) is located in body of heater (5) ante-chamber, cleaning door (54) is located at body of heater (5) ante-chamber bottom, combustion fan (4) and Heagting fan (8) are housed in the body of heater back cavity (52), stone or metal plate for standing a stove on as a precaution against fire (7) is arranged on the top of body of heater (5) and is provided with puts pot mouthful (72), relative with the top of burner (6), stone or metal plate for standing a stove on as a precaution against fire (7) is hollow cavity (73) all around, top, stone or metal plate for standing a stove on as a precaution against fire (7) rear portion is provided with air heating apparatus (9), from stone or metal plate for standing a stove on as a precaution against fire (7) all around the air of process enter air heating apparatus (9) with gas fume after burning and carry out heat exchange, its generation hot-air discharge by hot blast fairlead (91), being sent to by pipeline needs part.

2. a kind of controlled stalk combustion furance according to claim 1, the rotating speed that it is characterized in that described helixes feed equipment (2) is controlled, it is realized by following structure: the ratchet (31) of control delivery rate device (3) and the helical axis (21) on the helixes feed equipment (2) link together by key, control delivery rate device (3) is equipped with can be around the fork (32) of helical axis (21) rotation, ratchet (33) is contained on the fork (32), electromagnet (34) is fixed on the fixed head (35), fixed head (35) is contained in the end of helixes feed equipment (2) with screw, electromagnet (34) energising back is inhaled movable pendulum bar (32) drive ratchet (33) promotion ratchet (31) and is rotated a tooth, electromagnet (34) outage, fork (32) drops to reference column (36) by deadweight to be stopped, the power of electromagnet (34) is the voltage of capacitor discharge, and the discharge frequency of capacitor is subjected to change the control of the on-off circuit (37) of pulse frequency.

3. a kind of controlled stalk combustion furance according to claim 1 is characterized in that the top of described helixes feed equipment (2) is provided with the electromagnetic oscillation device (22) that prevents that magazine feed from interrupting.

4. a kind of controlled stalk combustion furance according to claim 1 is characterized in that described burner (6) forms by being positioned at combustion chamber (62) that top has air compartment, wind hole and combustion chamber and the deep camber variable diameter passage (61) that is positioned at the bottom.

5. a kind of controlled stalk combustion furance according to claim 1, it is characterized in that described air heating apparatus (9) is again a residual heat using device simultaneously, form by 6 parts, inner core (94) is designed to tab style with the structure of outer core (93), hot blast efferent duct (91) is connected on the outer core (93) with screw with inner core (94), outlet flue (96), ash removing opening (92) are cast together with outer core (93), shell (95) overlaps the outer seam location of leaning on of core (93) outside, and outer core (93) is screwed on stone or metal plate for standing a stove on as a precaution against fire (7) by the seam location.