CN201547818U

CN201547818U - Adjustable air-intake biomass gasification furnace

Info

Publication number: CN201547818U
Application number: CN200920254827XU
Authority: CN
Inventors: 韩文建
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-28
Filing date: 2009-11-28
Publication date: 2010-08-11
Anticipated expiration: 2019-11-28

Abstract

The utility model relates to a furnace, in particular to an adjustable air-intake biomass gasification furnace, which resolves problems that the existing gasification furnaces are unstable in combustion and not easy for controlling, affects gasification effect and the like. The adjustable air-intake biomass gasification furnace comprises a furnace body, an ashpan and a furnace flue, a secondary air supply chamber is formed between the furnace flue and a furnace body, an ash collection chamber is arranged below the furnace flue, a fire grate is erected between the furnace flue and the ash collection chamber, an air box is arranged below the furnace body and comprises a fan and an air intake passage communicated with an air outlet of the fan, an upper blast pipe and a lower blast pipe are respectively arranged on two sides of the air intake passage, a movable air-regulating plate is arranged in the air intake passage, the upper blast pipe is communicated with the secondary air supply chamber while the lower blast pipe is communicated with the ash collection chamber, and a regulating rod extending out of the air box is fixed on the movable air-regulating plate. The adjustable air-intake biomass gasification furnace is simple in structure, reasonable in design and convenient for operation, realizes controllable furnace temperature and air intake volume, realizes gasification of fixed carbon through different air distribution at different combustion time intervals, has ground-breaking significance on increasing heat efficiency of combustion and achieves perfect smoke and ash emission.

Description

The adjustable biomass gasifying furnace of air intake

Technical field

The utility model relates to a kind of stove and accessory, is specially the adjustable biomass gasifying furnace of a kind of air intake.

Background technology

Current, the rural area all can produce a large amount of agricultural crop straws every year, leaf, sawdust, combustibles such as rice chaff, these combustible majorities are directly burnt, this has not only caused a large amount of thermal loss, and brought very serious environmental to pollute, biomass half-gasification oven has appearred in order to address this problem, its body of heater is provided with the combustion chamber from top to bottom successively, vaporizer, the living beings generation fuel gas of in vaporizer, smouldering, used oxygen is obtained by natural air distribution usually when smouldering, fuel gas the air that provides with the secondary air feed behind the combustion chamber is provided mixes and be incorporated in fire door and fully burn, this mode can produce living beings in combustion process tar is directly burnt, and solves the secondary pollution problem.But situation from present use, also there is following deficiency in biomass half-gasification oven, existing secondary air feed structure does not take into account the outlet pressure problem, the air intake of stove and accessory cavity, go out the bulbs of pressure imbalance of fuel gas when high temperature that wind pressure and vaporizer produce, cause combustion instability, wayward, influence gasification result, and easily flame-out, tar is many, igniting is difficult.In addition, when the secondary air feed was combustion-supporting, stove and accessory generally was to give cold air or middle warm air on the market, and combustion instability a little less than the intensity of fire, can not be taken off the lid burning for a long time, and thoroughly eliminating smoke is difficult to accomplish.

Summary of the invention

There is combustion instability in the utility model in order to solve existing biomass gasifying furnace, and is wayward, influence gasification result, and problem such as flame-out easily, the difficulty of lighting a fire, and provides a kind of air intake adjustable biomass gasifying furnace

The utility model is to adopt following technical scheme to realize: the adjustable biomass gasifying furnace of air intake, comprise the body of heater that is fixed on the furnace bottom, be positioned at the ashpan of body of heater top and the flue that is positioned at body of heater, constitute secondary air supplying chamber between flue and the body of heater, the flue below is provided with dust collection chamber, set up fire grate between flue and the dust collection chamber, innovative point of the present utility model is that the body of heater below is provided with bellows, these bellows comprise blower fan, the air intake passage that communicates with fan outlet, the air intake passage both sides are respectively equipped with upcast ventilation pipe and the lower air conduit that is communicated with it, are provided for regulating upcast ventilation pipe in the air intake passage, the movable air regulating board of lower air conduit intake; Upcast ventilation pipe is communicated with secondary air supplying chamber, and lower air conduit is communicated with dust collection chamber.

Adopt structural design of the present utility model, according to actual needs, by regulating and control the break-make of movable air regulating board and upcast ventilation pipe, lower air conduit, realize that an air feed is or/and the size of secondary air feed and wind supply quantity, reach air intake rational proportion up and down, make burning reach optimum efficiency, reach the highest temperature, and guarantee stove and accessory cavity air intake, air-out, add the fuel gas high temperature bulbs of pressure, reach pressure balance, be the optimal air proportioning this moment, gasification, flameholding.In addition, the utility model is arranged on the body of heater below with bellows and airduct, when carrying out the secondary air feed, combustion air mixes, lights with fuel gas after rising to burner by secondary air supplying chamber below, in the combustion air uphill process, radiant heat through burner hearth has been heated to uniform temperature, thereby has guaranteed the reliability of igniting and the stability of burning.

Described ashpan one side is provided with the drawer type feeder channel, feeder channel top is provided with batch meter, has changed the drawback that stove and accessory in the past can not feed in raw material midway, can arbitrarily feed in raw material, and also over-emitting black exhaust not when reinforced, there is not dust, easy to operate.Be fixed with the adjusting rod that stretches out bellows on the described movable air regulating board, the adjusting rod end is provided with the accent wind knob that is installed on the bellows, and during use, people only need left rotation and right rotation to transfer the wind knob, can realize the adjusting of air feed, secondary air feed air quantity as required.

Compared with prior art, the utility model is simple in structure, reasonable in design, easy and simple to handle, realized that furnace temperature and intake are controlled, carry out different air distributions in each burning period, realized the gasification of fixed carbon, the raising of combustion thermal efficiency is had the meaning of breakthrough, and the discharge capacity of flue dust can both do the trick.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the B-B vertical view of Fig. 1;

Fig. 4 is the internal structure schematic diagram of bellows among Fig. 1;

Among the figure: the 1-furnace bottom; The 2-body of heater; The 3-ashpan; The 4-flue; 5-secondary air supplying chamber; 6-dust collection chamber; The 7-fire grate; The 8-bellows; The 9-blower fan; The 10-air intake passage; The 11-upcast ventilation pipe; The 12-lower air conduit; The movable air regulating board of 13-; 14-drawer type feeder channel; The 15-batch meter; The 16-adjusting rod; 17-transfers the wind knob.

The specific embodiment

The adjustable biomass gasifying furnace of air intake, as shown in Figure 1, comprise the body of heater 2 that is fixed on the furnace bottom 1, be positioned at the ashpan 3 of body of heater top and the flue 4 that is positioned at body of heater, constitute secondary air supplying chamber 5 between flue 4 and the body of heater 1, flue 4 belows are provided with dust collection chamber 6, set up fire grate 7 between flue 4 and the dust collection chamber 6, body of heater 1 below is provided with bellows 8, as shown in Figure 4, these bellows comprise blower fan 9, the air intake passage 10 that communicates with fan outlet, air intake passage 10 both sides are respectively equipped with upcast ventilation pipe 11 and the lower air conduit 12 that is communicated with it, are provided for regulating upcast ventilation pipe 11 in the air intake passage 10, the movable air regulating board 13 of lower air conduit 12 intakes; Upcast ventilation pipe 11 is communicated with secondary air supplying chamber 5, and lower air conduit 12 is communicated with dust collection chamber 6.

As shown in Figure 2, ashpan 3 one sides are provided with drawer type feeder channel 14, and the feeder channel top is provided with batch meter 15.

As shown in Figure 3, be fixed with the adjusting rod 16 that stretches out bellows on the movable air regulating board 13, adjusting rod 16 ends are provided with the accent wind knob 17 that is installed on the bellows 8.During concrete the use, transfer the wind knob to have three gears at least, a gear is to make upcast ventilation pipe communicate with secondary air supplying chamber, a gear is to make lower air conduit communicate with dust collection chamber, also having a gear is in the middle of air regulating board is positioned at, upcast ventilation pipe is communicated with air intake passage respectively with lower air conduit, existing secondary air feed, air feed once again.

Claims

1. adjustable biomass gasifying furnace of air intake, comprise the body of heater (2) that is fixed on the furnace bottom (1), be positioned at the ashpan (3) of body of heater top and the flue (4) that is positioned at body of heater, constitute secondary air supplying chamber (5) between flue (4) and the body of heater (1), flue (4) below is provided with dust collection chamber (6), set up fire grate (7) between flue (4) and the dust collection chamber (6), it is characterized in that body of heater (1) below is provided with bellows (8), these bellows comprise blower fan (9), the air intake passage that communicates with fan outlet (10), air intake passage (10) both sides are respectively equipped with upcast ventilation pipe (11) and the lower air conduit (12) that is communicated with it, are provided for regulating upcast ventilation pipe (11) in the air intake passage (10), the movable air regulating board (13) of lower air conduit (12) intake; Upcast ventilation pipe (11) is communicated with secondary air supplying chamber (5), and lower air conduit (12) is communicated with dust collection chamber (6).

2. the adjustable biomass gasifying furnace of air intake according to claim 1 is characterized in that ashpan (3) one sides are provided with drawer type feeder channel (14), and the feeder channel top is provided with batch meter (15).

3. the adjustable biomass gasifying furnace of air intake according to claim 1 is characterized in that being fixed with on the movable air regulating board (13) adjusting rod (16) that stretches out bellows, and adjusting rod (16) end is provided with the accent wind knob (17) that is installed on the bellows (8).