CN202209671U

CN202209671U - Combustor structure of biomass fuel combustion furnace

Info

Publication number: CN202209671U
Application number: CN201120278480XU
Authority: CN
Inventors: 白成学; 安相重
Original assignee: SHENYANG NONGXING ENVIRONMENTAL PROTECTION ENERGY-SAVING EQUIPMENT DEVELOPMENT CO LTD
Current assignee: SHENYANG NONGXING ENVIRONMENTAL PROTECTION ENERGY-SAVING EQUIPMENT DEVELOPMENT CO LTD
Priority date: 2011-08-02
Filing date: 2011-08-02
Publication date: 2012-05-02
Anticipated expiration: 2021-08-02

Abstract

A combustor structure of a biomass fuel combustion furnace comprises a combustion chamber housing, a blast tube and an igniter, wherein an auger shaft (2) penetrates through the wall of the upper part of the wide end of the combustion chamber housing (8) along the total length of a combustion chamber; the other end of the auger shaft (2) is fixed to the wall of the wide end of the combustion chamber housing (8) by means of a fixing plate (4) and screws (7); and a helical blade (5) is arranged on the auger shaft (2) in the combustion chamber. Compared with the dust removal manner in previous patents that a gear pushes a shifting fork to remove dust, the combustor structure of the biomass fuel combustion furnace is characterized in that: the helical blade on the auger shaft pushes ash; the helical blade slowly rolls without mechanical friction among devices; the requirement on high temperature resistant material is relatively not high; and the cost of dust removal devices in the combustion chamber can be reduced. The helical blade on the auger shaft is as high as being 0.5-1 cm away from the base plate of the combustion chamber; and such a small gap ensures that the ash after combustion is free from caking and coking.

Description

The burner structure of biomass fuel combustion stove

Technical field

The utility model relates to the boiler of firing biomass fuel, specifically is the burner structure in the stove.

Background technology

Biomass fuel specifically has stalk granular fuel, is that national policy is helped the environmental protection project of promoting in recent years.Crop material, dead leaf in will discarding autumn afield loses dry plant refuse such as branch, rice husk, corn ear to be pulverized, and through the mechanical presses moulding, becomes granular fuel.This fuel does not produce harmful burnt gas, not air pollution, and ashes also contain materials such as phosphorus, potassium, can make the fertilizer auxiliary material.Yet existing market is sold effective often first-class, meticulous, impure few to the demanded fuel price of biomass fuel combustion stove; And the ash amount that low-cost fuel produces is big; Also be prone to coking because of containing sand, maize pulp saccharic etc. more; Burn insufficient, calorific value is low, this has just influenced promoting the use of of this fuel.The applicant's the ZL201020010169.2 of patent formerly " burner of biomass fuel combustion stove " has proposed the measure that addresses this problem: " burner stator stove circle wall is fixed; as in the stator stove circle fixedly shift fork to be arranged; as and height distance to be arranged with rotor stone or metal plate for standing a stove on as a precaution against fire upper surface; when the rotor stone or metal plate for standing a stove on as a precaution against fire to shift fork incline direction backwards rotation the time, the coking after shift fork will burn naturally is along the cleaning door deslagging on stator stove circle and the casing." this design saves manpower, and the biomass fuel quality there is not requirement, even biomass fuel is impure more, can not stop up burner hearth because of coking yet.But because of the rotor stone or metal plate for standing a stove on as a precaution against fire is in high temperature place in the combustion chamber, to material require high temperature resistant, rigidity good, cost is high relatively.

Summary of the invention

The purpose of the utility model provides a kind of burner structure of biomass fuel combustion stove, disintegrating slag, scarfing cinder automatically, and the ash disposal device cost is low in the combustion chamber.

The burner structure of this biomass fuel combustion stove comprises burning chamber shell, ajutage, electric igniter, it is characterized in that screw conveyor shaft from the combustion chamber wide end top wall pass; Run through combustion chamber length; The screw conveyor shaft other end is fixed on the wide end wall of burning chamber shell through fixed head and screw, on the screw conveyor shaft in the combustion chamber helical blade is arranged, and screw conveyor shaft is through the axle sleeve location; By driven by motor, the height of helical blade is the interval apart from 0.5 ~ 1 centimetre of combustion chamber soleplate on the screw conveyor shaft; The combustion chamber soleplate secured in parallel is in burning chamber shell, and being separated out top is the combustion chamber, and screw conveyor shaft is arranged on the combustion chamber shell body wall of combustion chamber soleplate upper and lower with ajutage, electric igniter parallel, coaxially.

The gear of patent promotes the shift fork ash disposal before the contrast, and the design pushes away ash with the helical blade on the screw conveyor shaft, and helical blade slowly rolls, and does not have the mechanical friction between the device, and is not high relatively to the requirement of high temperature resistant material, can reduce ash disposal device cost in the combustion chamber.The height of helical blade is the interval apart from 0.5 ~ 1 centimetre of combustion chamber soleplate on the screw conveyor shaft, and so little gap makes the coking that can not lump of the lime-ash after the burning.

Description of drawings

Fig. 1 is the burner structure vertical view of the design's biomass fuel combustion stove;

Fig. 2 is the burner structure cutaway view of Fig. 1;

Fig. 3 is the burner structure left view of Fig. 1;

Fig. 4 is the burner structure right view of Fig. 1.

The specific embodiment

The burner structure of biomass fuel combustion stove comprises burning chamber shell, ajutage, electric igniter, sees Fig. 1, Fig. 2; It is characterized in that screw conveyor shaft 2 passes from burning chamber shell 8 wide end top wall, run through combustion chamber length, screw conveyor shaft 2 is through the axle sleeve location; By driven by motor; Screw conveyor shaft 2 other ends are fixed on the burning chamber shell 8 wide end walls through fixed head 4 and screw 7, see Fig. 3, on the screw conveyor shaft 2 in the combustion chamber helical blade 5 are arranged.

The height of helical blade 5 is that helical blade 5 is apart from reserving 0.5 ~ 1 centimetre in space between the combustion chamber soleplate 6 on the screw conveyor shaft 2.

Combustion chamber soleplate 6 secured in parallel are seen Fig. 4 in burning chamber shell 8, being separated out top is the combustion chamber, slag-drip opening 9 below combustion chamber soleplate 6, burning chamber shell 8 wide end one sides; Screw conveyor shaft 2 and ajutage 3, electric igniter 1 are arranged on burning chamber shell 8 walls of combustion chamber soleplate 6 upper and lowers parallel, coaxially.

Claims

1. the burner structure of biomass fuel combustion stove; Comprise burning chamber shell, ajutage, igniter, it is characterized in that screw conveyor shaft (2) passes from the wide end top wall of burning chamber shell (8), runs through combustion chamber length; Screw conveyor shaft (2) is through the axle sleeve location; By driven by motor, screw conveyor shaft (2) other end is fixed on the wide end wall of burning chamber shell (8) through fixed head (4) and screw (7), and helical blade (5) is arranged on the screw conveyor shaft in the combustion chamber (2).

2. the burner structure of biomass fuel combustion stove according to claim 1 is characterized in that it is apart from reserving 0.5 ~ 1 centimetre in space between the combustion chamber soleplate (6) that screw conveyor shaft (2) is gone up the height of helical blade (5).

3. the burner structure of biomass fuel combustion stove according to claim 1; It is characterized in that combustion chamber soleplate (6) secured in parallel is in burning chamber shell (8); Being separated out top is the combustion chamber, and slag-drip opening (9) is in combustion chamber soleplate (6) below, wide end one side of burning chamber shell (8); Screw conveyor shaft (2) and ajutage (3), electric igniter (1) are arranged on burning chamber shell (8) wall of combustion chamber soleplate (6) upper and lower parallel, coaxially.