CN111189066A

CN111189066A - Biomass combustion furnace

Info

Publication number: CN111189066A
Application number: CN201811361896.0A
Authority: CN
Inventors: 聂竹胤
Original assignee: Hunan Sanmulongwei Energy Technology Co Ltd
Current assignee: Hunan Sanmulongwei Energy Technology Co Ltd
Priority date: 2018-11-15
Filing date: 2018-11-15
Publication date: 2020-05-22

Abstract

A biomass combustion furnace is provided with a hopper, a hinged dragon and a furnace core in the furnace body, a detachable flame nozzle is arranged at the side part of the furnace body, a furnace chamber is arranged in the furnace core, a furnace bridge is arranged at the bottom of the furnace chamber, and an oxygen supply chamber is arranged below the furnace bridge; the flame spray nozzle comprises a flame spray tube and a flame spray sleeve, wherein a cooling air chamber is arranged between the flame spray tube and the flame spray sleeve, and the cooling air chamber is communicated with the air distribution chamber. The inner wall of the furnace core is a spherical corrugated surface, the flame nozzle comprises a flame spraying pipe and a flame spraying sleeve, a cooling air chamber is arranged between the flame spraying pipe and the flame spraying sleeve, a bearing seat is arranged at the end part of the hinged dragon, the bearing seat comprises two concentric cylinders with different inner and outer diameters, the bearing seat is sleeved at the end part of the hinged dragon sleeve, and the hinged dragon shaft is arranged in the bearing seat through two bearings. The two ends of the oxygen supply holes on the furnace bridge plate are big, and the middle is small. The biomass particle fuel provided by the invention adopts biomass particles as fuel, and has the advantages of sufficient combustion, high thermal efficiency, stable work and long service life.

Description

Biomass combustion furnace

Technical Field

The invention relates to the field of biomass stoves, and particularly provides a biomass combustion furnace.

Background

The biomass stove takes the formed biomass particles as fuel, generates heat energy by the principle of pyrolysis and gasification of biomass raw materials, and can fully and effectively utilize biomass energy. At present, many enterprises in China are engaged in the research and development and production of biomass stoves, and the related technologies of the biomass stoves become mature day by day. The applicant is an enterprise specialized in research, development and production of biomass stoves, and the products produced at present mainly comprise biomass firewood integrated stoves, biomass cooking and heating furnaces, biomass gas flue-cured tobacco furnaces, biomass boilers, biomass briquette fuels and the like. And applied for application No. 2016112018556 entitled "a biomass burner"; application No. 2006101660201 entitled "Biomass composite gasification furnace"; the application number is 200910043224X, and the name is 'integrated composite gasification furnace'; application No. 2015106746388 entitled "a core for a Biomass stove"; the application number is 2017100033282, which is named as more than 20 patents of 'a biomass multifunctional cauldron kitchen range'. Nevertheless, biomass stoves currently still suffer from a number of problems. Such as: the furnace bridge is easy to block, the combustion and gasification of the biological granular fuel are insufficient, the heat energy utilization rate is not high, the temperature of the hearth is not high enough, the material is easy to block during the feeding of the auger, the flame nozzle of the burner is easy to burn out, and the like.

Disclosure of Invention

The invention aims to provide a biomass combustion furnace which adopts biomass particles as fuel, has sufficient combustion, high thermal efficiency, stable work and long service life.

In order to achieve the above object, the embodiments of the present invention are: a biomass combustion furnace is provided with a combustion gasification device, a feeding device and an oxygen supply system in the furnace body, a detachable flame nozzle is arranged on the side part of the furnace body, the combustion gasification device comprises a furnace core arranged in the furnace body, an outer barrel is arranged outside the furnace core, an air distribution chamber is arranged between the furnace core and the outer barrel, a furnace hearth is arranged in the furnace core, a furnace bridge is arranged at the bottom of the furnace hearth, and an oxygen supply chamber is arranged below the furnace bridge; the oxygen supply system comprises a blower and an air distribution box, wherein the air distribution box is respectively communicated with the oxygen supply chamber, the hearth and the air distribution chamber; the feeding device comprises a hopper, a hinged dragon and a feeding motor, the hopper is communicated with the hearth through the hinged dragon, the flame nozzle comprises a flame spraying pipe and a flame spraying sleeve, the flame spraying pipe is communicated with the furnace core, the flame spraying sleeve is connected with the outer barrel, a cooling air chamber is arranged between the flame spraying pipe and the flame spraying sleeve, and the cooling air chamber is communicated with the air distribution chamber; the inner wall of the furnace core is a spherical corrugated surface.

Preferably, the auger is packaged with an auger shaft and an auger sleeve, a bearing seat is arranged at the end part of the auger, the bearing seat comprises two concentric cylinders with different inner and outer diameters, the bearing seat is sleeved at the end part of the auger sleeve, and the auger shaft is arranged in the bearing seat through two bearings.

Preferably, the furnace bridge is a furnace bridge plate, the furnace bridge plate is provided with mesh oxygen supply holes, and the two ends of the oxygen supply holes are large, and the middle of the oxygen supply holes is small.

Preferably, the two ends of the oxygen supply hole are conical holes, and the middle of the oxygen supply hole is a round hole.

The invention has the beneficial effects that:

(1) the inner wall of the furnace core is a spherical corrugated surface, so that the heat radiation effect can be improved, the temperature of the furnace hearth is further improved, and the combustion of biomass granular fuel is more sufficient.

(2) The flame spray nozzle comprises a flame spray pipe and a flame spray sleeve, the flame spray pipe is communicated with the furnace core, the flame spray sleeve is connected with the outer barrel, a cooling air chamber is arranged between the flame spray pipe and the flame spray sleeve, and the cooling air chamber is communicated with the air distribution chamber. The air in the cooling air chamber can play a role in reducing the temperature of the flame nozzle, and the service life of the flame nozzle is prolonged.

(3) The end part of the auger is provided with a bearing seat which comprises two concentric cylinders with different inner and outer diameters, the bearing seat is sleeved at the end part of the auger sleeve, and the auger shaft is arranged in the bearing seat through two bearings. The structure can improve the coaxiality of the hinged shaft and the hinged sleeve, prevent biomass particles from being blocked in the hinged sleeve and solve the problem of material blocking.

(4) The furnace bridge is a furnace bridge plate which is provided with mesh oxygen supply holes, and the two ends of the oxygen supply holes are large and the middle is small. The two ends of the oxygen supply hole are conical holes, and the middle part is a round hole. Powder generated after the formed biomass granular material is roasted easily falls from a larger conical hole at the upper end, so that the powder is prevented from being deposited on the surface of the furnace bridge plate; when oxygen is supplied, when air blows biomass particles upwards from the lower part of the furnace bridge, the conical hole at the lower part of the furnace bridge can accumulate wind power; the conical hole above the furnace bridge can disperse wind power, so that the biomass particles can be blown away more sufficiently by the wind, better oxygen supply can be realized, and the biomass particles can be combusted more sufficiently.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view of a grate;

FIG. 4 is a plan view of the grate;

FIG. 5 is a schematic view of the mounting structure of the hopper, the auger and the bearing seat;

fig. 6 is a schematic structural view of the bearing seat.

In the figure: 1-base, 2-hearth, 3-secondary oxygen distribution pipe, 4-spherical corrugated surface, 5-air distribution chamber, 6-fire observation opening, 7-fire nozzle, 8-outer barrel, 9-barrel cover, 10-sealing cover, 11-feed inlet, 12-blower, 13-feed motor, 14-bearing seat, 15-hopper, 16-oil spray igniter, 17-air distribution box, 18-furnace bridge, 19-oxygen supply hole, 20-auger shaft, 21-auger sleeve, 22-driving wheel, 71-fire spray pipe, 72-fire spray sleeve, 73-cooling air chamber, 23-air inlet hole, 24-secondary oxygen distribution pipe, 25-furnace core and 26-auger.

Detailed Description

The biomass combustion furnace shown in fig. 1-6 is provided with a combustion gasification device, a feeding device and an oxygen supply system in the furnace body, and a flame nozzle 7 is arranged at the side part of the furnace body. The combustion gasification device comprises a furnace core 25 arranged in the furnace body, an outer barrel 8 is arranged outside the furnace core 25, an air distribution chamber 5 is arranged between the furnace core 25 and the outer barrel 8, and a barrel cover 9 is arranged at the top of the outer barrel 8. The furnace core 25 is internally provided with a hearth 2. The top of the furnace core 25 is provided with a sealing cover 10. The bottom of the hearth 2 is provided with a furnace bridge 18 and an oil-injection igniter 16. An oxygen supply chamber is provided below the grate 18. The oxygen supply system comprises a blower 12 and a partial pressure box 17. The blower 12 is connected with a wind distribution box 17, and the wind distribution box 17 is respectively communicated with the oxygen supply chamber, the hearth 2 and the wind distribution chamber 5. The feeding device comprises a hopper 15, a hinge and a feeding motor 13, wherein the hinge is communicated with the hearth 2. The side part of the furnace body is provided with a fire observation port 6. The flame spray nozzle 7 comprises a flame spray pipe 71 and a flame spray sleeve 72, wherein the flame spray pipe 71 is communicated with the furnace core 25, and the flame spray sleeve 72 is connected with the outer barrel 8. A cooling air chamber 73 is arranged between the flame-spraying pipe 71 and the flame-spraying sleeve 72, and the cooling air chamber 73 is communicated with the air distribution chamber 5. The side wall of the lower part of the outer barrel 8 is provided with an air inlet hole 23, and the air distribution box 17 is communicated with the air distribution box 5 through the air inlet hole 23. The bottom of the furnace core 25 is provided with a secondary oxygen distribution port, a secondary oxygen distribution pipe 24 is arranged in the furnace wall at the lower part of the furnace core, and the air distribution box 17 is communicated with the air distribution chamber 5 through the secondary oxygen distribution port and the secondary oxygen distribution pipe 24. The packing of dragon 26 is articulated dragon axle 20 and dragon cover 21, and dragon cover 21 connects hopper 15 and furnace 2, and dragon 26 tip is provided with bearing frame 14, and bearing frame 14 includes two concentric cylinders that inside and outside diameter is unequal, and bearing frame 14 suit is in the tip of dragon cover 21, and dragon axle 20 installs in bearing frame 14 through two bearings. The end of the auger shaft 20 is provided with a driving wheel 22, and the driving wheel 22 is connected with the feeding motor 13 through a driving belt. The inner wall of the furnace core is a spherical corrugated surface 4. The bottom of the furnace body is provided with a base 1. An inclined feeding hole 11 is arranged between the auger 26 and the hearth 2. The furnace bridge 18 is a furnace bridge plate, the furnace bridge plate is provided with a reticular oxygen supply hole 19, and the two ends of the oxygen supply hole 19 are large, and the middle is small. The two ends of the oxygen supply hole 19 are conical holes, and the middle is a round hole.

Preferably, the flame nozzle 7 is detachably arranged.

Preferably, a temperature reduction chamber is arranged between the flame spraying pipe 71 and the flame spraying sleeve 72, the temperature reduction chamber is provided with a water inlet and a water outlet, and water is filled in the temperature reduction chamber.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, the components and the connection relationship therebetween, which are not described in the present specification, are well known in the art of biomass stoves. It will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.

Claims

1. A biomass combustion furnace is provided with a combustion gasification device, a feeding device and an oxygen supply system in the furnace body, a flame nozzle is arranged on the side part of the furnace body, the combustion gasification device comprises a furnace core arranged in the furnace body, an outer barrel is arranged outside the furnace core, an air distribution chamber is arranged between the furnace core and the outer barrel, a furnace hearth is arranged in the furnace core, a furnace bridge is arranged at the bottom of the furnace hearth, and an oxygen supply chamber is arranged below the furnace bridge; the oxygen supply system comprises a blower and an air distribution box, wherein the air distribution box is respectively communicated with the oxygen supply chamber, the hearth and the air distribution chamber; the feeding device comprises a hopper, a hinged dragon and a feeding motor, the hopper is communicated with a hearth through the hinged dragon, and the feeding device is characterized in that the flame spray nozzle comprises a flame spray pipe and a flame spray sleeve, the flame spray pipe is communicated with a furnace core, the flame spray sleeve is connected with an outer barrel, a cooling air chamber is arranged between the flame spray pipe and the flame spray sleeve and is communicated with an air distribution chamber, and the inner wall of the furnace core is a spherical corrugated surface.

2. The biomass combustion furnace as claimed in claim 1, wherein the auger comprises an auger shaft and an auger sleeve, a bearing seat is arranged at the end of the auger, the bearing seat comprises two concentric cylinders with different inner and outer diameters, the bearing seat is sleeved at the end of the auger sleeve, and the auger shaft is arranged in the bearing seat through two bearings.

3. The biomass combustion furnace as claimed in claim 1 or 2, wherein the furnace bridge is a furnace bridge plate, and the furnace bridge plate is provided with mesh oxygen supply holes, and the two ends of the oxygen supply holes are large and the middle of the oxygen supply holes is small.

4. The biomass combustion furnace as claimed in claim 3, wherein the oxygen supply hole has two conical ends and a circular center.