CN205299625U - Biomass combustion furnace's stove bottom and fire burning furnace - Google Patents

Abstract

The utility model discloses a biomass combustion furnace's stove bottom and fire burning furnace, biomass combustion furnace's stove bottom, furnace's stove bottom is round platform shape annular structure, and the round hole is connected with the furnace inlet pipe on the round platform, and the lower round edge and the furnace of round platform are connected. The beneficial effect of the utility model: the utility model discloses a be round platform shape annular structure the stove bottom, arrange grey gear, outer circular air flue, interior circular air flue, circular air flue and divide tuber pipe, shale shaker to fit together, the stove bottom forms a taper surface, the shape is piled up to the fuel that holds that hold in the palm the higher authority that makes the shale shaker when seeing the furnace inlet pipe off also be the toper, makes fuel stably scatter to the periphery so easily, makes stable burning plane of fuel formation everywhere easily.

Description

The furnace bottom of a kind of biomass combustion furnace and combustion furnace

Technical field

This utility model belongs to solid-fuelled combustion furnace, relates to the biomass combustion furnace of the Full automatic feed that a kind of fuel burns from top to bottom, particularly relates to furnace bottom and the combustion furnace of a kind of biomass combustion furnace.

Background technology

The biomass combustion furnace of the existing Full automatic feed burnt from top to bottom is all adopt flat burner hearth, burner hearth fuel is piled up and is shaped as taper, so that burner hearth fuel ulking thickness is inconsistent, heat zone, the fuel depth everywhere of reducing zone that freeze profile becomes are also inconsistent, and these factors directly affect service behaviour and the gasification efficiency of combustion furnace.

Therefore, prior art also needs perfect further.

Utility model content

This utility model purpose is in that to provide furnace bottom and the combustion furnace of a kind of biomass combustion furnace.

Technical scheme is as follows:

The furnace bottom of a kind of biomass combustion furnace, the furnace bottom of burner hearth is truncated cone-shaped circulus, and on round platform, circular hole is connected with burner hearth feed pipe, and the lower round edge of round platform is connected with burner hearth.

Preferably, the furnace bottom of burner hearth is arranged over ash discharge gear, and ash discharge gear profile is also truncated cone-shaped circulus.

A kind of biomass combustion furnace, it includes horizontal feed device, feeding vertical device, burner hearth feed pipe, ash exhauster, burner hearth, upper furnace and various air channel, the furnace bottom of burner hearth is truncated cone-shaped circulus, and on round platform, circular hole is connected with burner hearth feed pipe, and the lower round edge of round platform is connected with burner hearth; The ash discharge gear profile of ash exhauster, annular passage annular passage divide airduct global shape and vibrosieve to be truncated cone-shaped circulus, be followed successively by from the bottom up, furnace bottom, ash discharge gear and annular passage divide airduct, vibrosieve.

Upper furnace is truncated cone-shaped circulus, namely fall funnel-form, burner hearth upper port is connected with the lower port of upper furnace.

Further, annular passage divides airduct global shape also in truncated cone-shaped circulus, annular passage divides airduct to be connected with outer ring air channel and annular air channel, and annular air channel is distributed with the some height curved airduct tilted to burner hearth feed pipe axis direction separately ringwise; Straight airduct on outer ring air channel is distributed adjacent straight airduct height ringwise and alternate is staggered.

Further, the straight airduct top same circumference of pipe shaft is uniformly distributed several straight airduct side air-out holes, straight airduct top end face has the straight airduct cap of a bigger lamellar, and curved airduct top is uniformly distributed several curved airduct side air-out holes on the same semicircle of pipe shaft of bending direction.

Further, vertical spin rotating shaft upper side and end face uniformly have spiral exhaust vent, and spiral exhaust vent connects with spiral duct.

Further, the upper blade face of the helical blade of vertical spin radially tilts gradually downward, and blade (radially) uniformly has some chip areas.

Further, the lower end borded pile of vertical spin is fixing with chip removal web plate to be connected, and is provided with scrap scraping plate between chip removal web plate and the bottom of vertical feed pipe, and scrap scraping plate is connected with chip removal web plate, and scrap scraping plate is directly anchored to bottom chip removal web plate.

Further, the bottom of vertical spin bearing is provided with spiral duct, the upper end of B chip removal valve is corresponding with the bottom of vertical spin rotating shaft, the bottom of vertical spin bearing is passed and connected in the upper end of B chip removal valve, and the hollow pore of vertical spin connects formation spiral duct by the bottom inner chamber of vertical spin bearing with B chip removal valve.

Further, horizontal feed pipe is connected with vertical feed pipe, the spirillum of flat spin is positioned at below the bell mouth of funnel, flat spin is rotationally connected by A outfan and horizontal feed pipe, vertical spin is arranged in vertical feed pipe, one end of horizontal feed pipe, flat spin top and vertical spin side are provided with a fuel spatial transition.

The beneficial effects of the utility model: this utility model by the furnace bottom of truncated cone-shaped circulus, ash discharge gear, outer ring air channel, annular air channel, annular passage divide airduct, vibrosieve to fit together, furnace bottom forms a taper surface, making vibrosieve above be ask the fuel held to pile up shape when sending burner hearth feed pipe is also taper, so easily fuel stabilization is made to scatter to periphery, it is easy to make fuel everywhere form a stable burning plane.

This utility model combustion furnace annular passage divides airduct entirety also in truncated cone-shaped circulus, by the straight airduct top same circumference of pipe shaft is uniformly distributed several straight airduct side air-out holes, straight airduct top end face has the straight airduct cap of a bigger lamellar, and this structure of straight airduct can allow and be more evenly distributed in wind same level in burner hearth; Curved airduct top is uniformly distributed several curved airduct side air-out holes on the same semicircle of pipe shaft of bending direction, and this structure of curved airduct can allow wind uniform directive burner hearth center, makes the wind in the middle part of burner hearth be more evenly distributed.

This utility model combustion furnace by uniformly having chip area on the blade of vertical spin, chip removal web plate is installed in vertical spin lower end, chip removal web plate scrap scraping plate installed below, vertical spin bearing is installed A chip removal mouth, the bits shape thing in fuel is made to be discharged outside body of heater, making burner hearth fuel bits shape thing reduce, thus reducing the Mars that bits shape thing burning produces, dust emissions amount and pollutant also reduce accordingly; Vertical spin center is provided with spiral duct, and upper end is provided with spiral exhaust vent, when making furnace diameter bigger also can uniformly air blast, this passage also has ash discharge effect, make combustion furnace work more stable, environmental-protecting performance is better.

Accompanying drawing explanation

Fig. 1 is this utility model bottom construction decomposing schematic representation.

Fig. 2 is this utility model bottom construction schematic diagram.

Fig. 3 is the structural representation of this utility model embodiment 1.

In figure: funnel 1, scrape ash motor 2, scrape ash motor gear 3, change speed gear box 4, A outfan 5, B outfan 6, flat spin 7, power transmission shaft 8, horizontal feed pipe 9, leeward band 10, leeward band exhaust vent 11, chip area 12, scrap scraping plate 13, conical tooth wheels 14, B chip removal mouth 15, B chip removal valve 16, spiral duct 17, vertical spin bearing 18, spiral duct valve 19, spiral duct air inlet 20, A chip removal mouth 21, A chip removal mouth valve 22, vertical feed pipe 23, chip removal web plate 24, chip removal mesh 25, vertical spin 26, ash releasing tube 27, ash discharge valve 28, furnace bottom 29, leeward band valve 30, leeward band blast pipe 31, ash discharge gear 32, annular passage blast pipe 33, annular passage valve 34, vibrator 35, annular passage divides airduct 36, straight airduct 37, straight airduct cap 38, straight airduct side air-out hole 39, annular air channel, outer ring air channel 40 41, curved airduct 42, curved airduct side air-out hole 43, spiral exhaust vent 44, burner hearth feed pipe 45, vibrosieve 46, vibration sieve aperture 47, burner hearth 48, upper furnace 49, igniting fuel gas inlet 50, igniting burnt gas valve 51, point windburn brings airduct 52 into, point windburn band valve 53, material level induction apparatus 54, material level induction rod 55, crater blast pipe 56, crater air intake valve 57, the one's intention as revealed in what one says that fires band 58, the one's intention as revealed in what one says that fires takes air holes 59 out of, crater 60, point windburn band 61, lighter 62, point windburn takes air holes 63 out of, material level tablet 64, fire banking-up board 65.

Detailed description of the invention

This utility model can be embodied as by the technical scheme in utility model content, by the following examples can the utility model will be further described, but, scope of the present utility model is not limited to following embodiment.

Embodiment 1:

The upper end of vertical feed pipe 23 is connected with the lower end of burner hearth feed pipe 45, and the lower end of vertical feed pipe 23 is connected with vertical spin bearing 18. The side of vertical feed pipe 23 has charging aperture and is connected with horizontal feed pipe 9, and the another port of horizontal feed pipe 9 is connected with change speed gear box 4, and end is upwards connected with funnel 1.

Flat spin 7 is connected with the outfan 5 of change speed gear box A, and the spirillum of flat spin 7 is positioned at below the bell mouth of funnel 1, and therefore, flat spin 7 is rotationally connected by A outfan 5 and horizontal feed pipe 9, and under the drive of A outfan 5 straight feeding.

The B outfan 6 of change speed gear box is connected with one end of power transmission shaft 8, vertical spin bearing 18 is provided with conical tooth wheels 14, the other end of power transmission shaft 8 is connected with conical tooth wheels 14, conical tooth wheels 14 are connected with the lower end of vertical spin 26 by change gear, the lower end of vertical spin 26 is through change gear to vertical spin bearing 18, and power transmission shaft 8 is connected with the sidewall of vertical spin bearing 18 by retainer.

The bottom of vertical spin bearing 18 is provided with spiral duct, the upper end of B chip removal valve 16 is corresponding with the bottom of vertical spin 26 rotating shaft, the bottom of vertical spin bearing 18 is passed and connected in the upper end of B chip removal valve 16, the hollow pore of vertical spin 26 connects formation spiral duct 17 by the bottom inner chamber of vertical spin bearing 18 with B chip removal valve 16, vertical spin 26 rotating shaft upper end in burner hearth feed pipe 45 to burner hearth 48 above, vertical spin 26 rotating shaft upper side and end face uniformly have spiral exhaust vent 44, and spiral exhaust vent 44 connects with spiral duct 17. The end of B chip removal valve 16 is B chip removal mouth 15; The outside blast pipe of spiral duct is provided with spiral duct valve 19, and spiral duct valve 19 is connected with vertical spin bearing 18, and end is spiral duct air inlet 20.

Vertical spin 26 is arranged in vertical feed pipe 23, and the upper blade face of helical blade radially tilts gradually downward, and blade radial uniformly has some chip areas 12.

The bottom of vertical feed pipe 23 is provided with chip removal web plate 24, the lower end borded pile of vertical spin 26 is fixing with chip removal web plate 24 to be connected, rotate together, scrap scraping plate 13 it is provided with between the bottom of chip removal web plate 24 and vertical feed pipe 23, scrap scraping plate 13 is connected with chip removal web plate 24, scrap scraping plate 13 is directly anchored to bottom chip removal web plate 24, and chip removal web plate 24 uniformly has chip removal mesh 25. Having floss hole on vertical spin bearing 18, A chip removal mouth valve 22 is connected with floss hole, and the end of A chip removal mouth valve 22 is A chip removal mouth 21.

The top of vertical feed pipe 23 is connected with burner hearth feed pipe 45, leeward band 10 is a cylinder, it is connected below with furnace bottom 29 above leeward band 10, in the 45 times end flanges in lower end and burner hearth feed pipe, plane is connected, and burner hearth feed pipe 45 is at a disadvantage with uniformly having leeward band exhaust vent 11 on the same circumference on 10 positions. Leeward is connected with leeward band blast pipe 31 with the side of 10, and the leeward end with blast pipe 31 is provided with leeward band valve 30.

Furnace bottom 29 is truncated cone-shaped circulus, inner circle is connected with outside burner hearth feed pipe 45, cylindrical is connected with burner hearth 48 lower end, the interior annulus of ash discharge gear 32 be flexibly connected outside burner hearth feed pipe 45 and above furnace bottom 29, the outer toroid of ash discharge gear 32 is connected with burner hearth 48 medial gap, the profile of ash discharge gear 32 is also truncated cone-shaped circulus, spoke the inner on ash discharge gear 32 is inclined upwardly, its gradient is identical with furnace bottom 29 tapering, scrape ash motor 2 respectively with burner hearth 48 lower end and scrape grey motor gear 3 and be connected, scrape ash motor gear 3 to be in transmission connection with ash discharge gear 32, when ash discharge gear 32 rotates, ash discharge gear spoke has scrapes ash function. ash releasing tube 27 is arranged on below furnace bottom 29, and on furnace bottom 29 base plate, the position corresponding to ash releasing tube 27 has floss hole, and ash releasing tube 27 is provided with ash discharge valve 28.

Annular passage includes annular passage blast pipe 33 and annular passage divides airduct 36, and annular passage is arranged on the furnace body wall of burner hearth 48; Ash discharge gear 32 is arranged over annular passage and divides airduct 36, annular passage divides airduct 36 global shape also in truncated cone-shaped circulus, annular passage divides the outside of airduct 36 to be connected with the inner side of annular passage blast pipe 33, is connected with annular passage valve 34 outside annular passage blast pipe 33; Annular passage divides airduct 36 to be connected with outer ring air channel 40 and annular air channel 41.

Annular air channel 41 adopts a ring pipe; Outer ring air channel 40 adopts many ring pipes. Annular air channel 41 is distributed with the some height curved airduct 42 tilted to burner hearth feed pipe 45 axis direction separately ringwise; Straight airduct 37 on many outer ring air channels 40 is distributed adjacent straight airduct height ringwise and alternate is staggered, the straight airduct 37 top same circumference of pipe shaft is uniformly distributed several straight airduct side air-out holes 39, straight airduct 37 top end face has the straight airduct cap 38 of a bigger lamellar, and curved airduct 42 top is uniformly distributed several curved airduct side air-out holes 43 on the same semicircle of pipe shaft of bending direction. The trapezoidal distribution of each ring pipe of annular passage, trapezoidal side wall slope is identical with furnace bottom 29 tapering.

Vibrosieve 46 is above annular passage, vibrosieve 46 has equally distributed vibration sieve aperture 47, the big sieve aperture of straight airduct 37 and curved airduct 42 traverse vibrosieve 46, the inner circle of vibrosieve 46 and cylindrical are connected with burner hearth feed pipe 45 and burner hearth 48 gap respectively, vibrator 35 is connected with burner hearth 48 air-tight movable, and its vibration outfan is connected through burner hearth 48 with vibrosieve 46.

Burner hearth 48 upper port is connected with the lower port of upper furnace 49, and upper furnace 49 is truncated cone-shaped circulus, namely fall funnel-form, upper furnace 49 middle and upper part is provided with a windburn band 61; Point windburn is connected with upper furnace 49 outer wall with the upper and lower inner circle of 61, and upper furnace 49 uniformly has a windburn on same circumference relative to windburn band 61 position and takes air holes 63 out of.

One end of igniting burnt gas valve 51 is brought airduct 52 into some windburn and is connected, and the other end is igniting fuel gas inlet 50. Point windburn band valve 53 one end is brought airduct 52 into some windburn and is connected, and the other end is connected with some windburn band 61.

Material level induction rod 55 one end is relative with material level induction apparatus 54 position, the other end and is connected with material level tablet 64 through upper furnace 49 higher than some windburn band 61 position, material level tablet 64 is positioned at and upper furnace 49 concentric position, and material level induction rod 55 is connected with upper furnace 49 furnace body wall air-tight movable. The ignitron of lighter 62 enters burner hearth from material level induction rod 55 sustained height position through upper furnace 49, and fixing with upper furnace 49 is connected.

The one's intention as revealed in what one says that fires band 58 outer ring sidewall mouth is connected with upper furnace 49 upper end, inner side is the outside of crater 60, crater 60 uniformly has, relative to the one's intention as revealed in what one says position with 58 that fires, the one's intention as revealed in what one says that fires on same circumference and takes air holes 59 out of, the one's intention as revealed in what one says that fires band 58 is connected with crater blast pipe 56, and crater blast pipe 56 is provided with crater air intake valve 57. Fire banking-up board 65 is flexibly connected with crater 60.

This utility model is uniformly distributed several straight airduct side air-out holes 39 by the same circumference of pipe shaft of straight airduct 37 top, straight airduct 37 top end face has the straight airduct cap 38 of a bigger lamellar, and this structure of straight airduct 37 can allow and be more evenly distributed in wind same level in burner hearth; Curved airduct 42 top is uniformly distributed several curved airduct side air-out holes 43 on the same semicircle of pipe shaft of bending direction, and this structure of curved airduct 42 also can allow wind uniform directive burner hearth center, makes wind be more evenly distributed in the middle part of burner hearth.

Operation principle:

Time initial, all valves are closed, and combustion furnace is in the state of banking up a fire.

When starting combustion furnace, start power supply and change speed gear box 4, opening A chip removal mouth valve 22, A outfan 5 drives flat spin 7 to rotate, and fuel enters horizontal feed pipe 9 from funnel 1, vertical feed pipe 23 is delivered to by 7 fuel of flat spin, being sent into burner hearth by vertical spin 26 through 45 fuel of burner hearth feed pipe again, when burner hearth fuel height reaches material level tablet 64 position, material level tablet 64 is by fuel jack-up, making material level induction apparatus 54 start to control by material level induction rod 55, feeding mechanism is out of service.

In fill process, bits shape thing in fuel is fallen to by the inclined-plane of chip area 12 or chip removal mesh 25 or vertical spin 26 or the gap of vertical spin 26 and vertical feed pipe 23 between the upper surface of chip removal web plate 24 and vertical spin bearing 18, scrap scraping plate 13 discharge from A chip removal mouth 21. It is primarily to the bits shape thing reduced in fuel, thus Mars and Mars when reducing burning are grey.

Open fire banking-up board 65, igniting burnt gas valve 51, some windburn band valve 53, crater air intake valve 57, annular passage valve 34, lower air duct valve 30, spiral duct valve 19, take air holes 63 out of by some windburn band 61, some windburn after igniting combustion gas and air mixing and arrive upper furnace 49 inside, initial igniter 62 simultaneously, air mixture is lighted, and starts combustion furnace ignition. Now, take air holes 59 out of respectively through crater blast pipe 56, the one's intention as revealed in what one says that fires band 58, the one's intention as revealed in what one says that fires, annular passage blast pipe 33, annular passage divide airduct 36, outer ring air channel 40, annular air channel 41, straight airduct 37, straight airduct side air-out hole 39, curved airduct 42, curved airduct side air-out hole 43, leeward band blast pipe 31, leeward band 10, leeward band exhaust vent 11, spiral duct air inlet 20, spiral duct 17, spiral exhaust vent 44 simultaneously to burner hearth air blast.Then being closed by Timer Controlling lighter 62, igniting burnt gas valve 51, some windburn band valve 53, leeward band valve 30, combustion furnace enters normal operating conditions.

Combustion furnace is regulated firepower size by annular passage valve 34, crater air intake valve 57 after entering normal operating conditions. At straight airduct 37 in burner hearth aeration step, although multiple straight airduct side air-out holes 39 air-out direction is vertical with straight airduct 37 axis, but due to the fuel barrier effect to wind, air blast direction is likely by the change of fuel, and directly airduct cap 38 can be corrected wind direction again, horizontal direction is kept to be uniformly dispersed air blast within certain areal extent,Straight airduct cap 38 also has the effect stoped above it in straight airduct 37 of dust entrance.

Through after a period of time, burner hearth fuel height reduction, material level tablet 64 declines, and material level induction apparatus 54 resets, and is again started up feeding mechanism to burner hearth charging, so repeats above fill process, makes combustion furnace reach the purpose of continuous operation.

When banking up a fire, cover fire banking-up board 65, close all air intake valves, open B chip removal valve 16, ash discharge valve 28, start and scrape ash motor 2, vibrator 35, in burner hearth, dust arrives ash discharge gear 32 place by vibrating sieve aperture 47, then discharges out of the furnace after dust being scraped ash releasing tube 27 by the spoke of ash discharge gear 32; Dust in spiral duct 17 and bits shape thing are discharged out of the furnace by B chip removal mouth 15 simultaneously.

Finally close B chip removal valve 16, A chip removal mouth valve 22, ash discharge valve 28 and power supply.

Claims (4)

1. the furnace bottom of a biomass combustion furnace, it is characterised in that the furnace bottom (29) of burner hearth is truncated cone-shaped circulus, and on round platform, circular hole is connected with burner hearth feed pipe (45), and the lower round edge of round platform is connected with burner hearth (48).

2. the furnace bottom of a kind of biomass combustion furnace according to claim 1, it is characterised in that the furnace bottom (29) of burner hearth is arranged over ash discharge gear (32), ash discharge gear (32) profile is also truncated cone-shaped circulus.

3. a biomass combustion furnace, it includes horizontal feed device, feeding vertical device, burner hearth feed pipe, ash exhauster, burner hearth, upper furnace and various air channel, it is characterized in that, the furnace bottom (29) of burner hearth is truncated cone-shaped circulus, on round platform, circular hole is connected with burner hearth feed pipe (45), and the lower round edge of round platform is connected with burner hearth (48); Ash discharge gear (32) profile of ash exhauster, annular passage annular passage divide airduct (36) global shape and vibrosieve to be truncated cone-shaped circulus, being followed successively by from the bottom up, furnace bottom (29), ash discharge gear (32) and annular passage divide airduct (36), vibrosieve.

4. a kind of biomass combustion furnace according to claim 3, upper furnace (49) is truncated cone-shaped circulus, namely falls funnel-form, and burner hearth (48) upper port is connected with the lower port of upper furnace (49).