CN110006031A - biomass burner - Google Patents

Abstract

The invention provides a biomass burner, belonging to the field of biomass stoves, comprising a furnace body, a grate, a burner, a primary oxygen supply jacket and a secondary oxygen supply jacket. The furnace body is provided with an air inlet duct arranged around the combustion zone at the lower part of the furnace and communicated with the combustion zone. The grate is arranged in the furnace body and is located below the combustion zone. The burner includes a gas collecting tube and a combustion tube, and the axial outer side of the gas outlet end of the combustion tube forms a flame zone. The primary oxygen supply sleeve is arranged around the gas outlet end of the combustion cylinder, and the inner primary oxygen cavity is communicated with the gas outlet end of the combustion cylinder through the primary oxygen supply hole. The secondary oxygen supply jacket is provided with a plurality of secondary oxygen supply pipes whose injection directions are respectively directed towards the flame zone. The air in the air inlet duct is preheated by the combustion zone, avoiding the problem that the temperature of the combustion zone of the furnace decreases and the pollutants emitted are increased. The primary oxygen supply hole sends air to the gas outlet end of the combustion cylinder, while the secondary oxygen supply pipe sprays air to the flame area, so that the combustible gas and oxygen in the flame area are more fully mixed and the combustion efficiency is improved.

Description

biomass burner

technical field

The invention belongs to the technical field of biomass stoves, and more particularly, relates to a biomass burner.

Background technique

The existing biomass burner is equipped with a burner with a cylindrical structure, the lower end of the burner is a gas collecting cylinder extending into the furnace chamber, and the upper end is a combustion cylinder arranged in the furnace mouth. When in use, the gas collecting cylinder collects the combustible gas in the furnace, and the combustion cylinder exports the combustible gas collected by the gas collecting cylinder for combustion.

For large biomass burning furnaces, there are many fuels in the furnace, the burning speed is fast, the flammable gas produced is very sufficient, and the flame is very strong. However, large biomass combustion furnaces are also prone to two problems: 1. A large amount of air is required in the furnace for incomplete combustion, but a large amount of air entering the furnace can easily cause the temperature in the furnace to drop, making the content of harmful substances in the combustible gas. 2. It is difficult for a large amount of combustible gas discharged from the combustion cylinder to be fully mixed with the air, resulting in insufficient combustion of the combustible gas and affecting the combustion efficiency.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a biomass burner, to solve the problem that the existing large amount of air entering the furnace can easily cause the temperature in the furnace to drop, so that the content of harmful substances in the combustible gas increases, resulting in The emission of pollutants increases, and the large amount of combustible gas discharged from the combustion cylinder is difficult to fully mix with the air, resulting in insufficient combustion of the combustible gas and technical problems affecting the combustion efficiency.

In order to achieve the above purpose, the technical scheme adopted in the present invention is: a biomass burner is provided, comprising:

The furnace body is provided with a furnace chamber inside, and the furnace wall is provided with a furnace mouth communicated with the furnace chamber and an air inlet duct arranged around the combustion zone at the lower part of the furnace chamber and communicated with the combustion zone;

a grate, arranged in the furnace body and below the combustion zone, for supporting the biomass fuel in the combustion zone;

A burner, comprising a gas collecting cylinder arranged in the furnace chamber and an air inlet end for collecting combustible gas, and a combustion cylinder arranged in the furnace mouth and the air inlet end being communicated with the gas outlet end of the gas collecting cylinder, and the gas outlet of the combustion tube The axial outer side of the end forms a flame zone;

The primary oxygen supply jacket is arranged around the outer circumference of the gas outlet end of the combustion cylinder, and a primary oxygen cavity is arranged inside the gas outlet end of the combustion cylinder. The side wall of the gas outlet end of the combustion cylinder is provided with a primary oxygen supply hole that communicates with the primary oxygen cavity and the inner cavity of the gas outlet end of the combustion cylinder; and

A secondary oxygen supply jacket is arranged around the outer periphery of the gas outlet end of the combustion cylinder, and a secondary oxygen cavity is arranged inside the gas outlet end of the combustion cylinder, and the secondary oxygen supply jacket is connected with a secondary inlet for communicating with an oxygen-containing source. an oxygen pipe and a plurality of secondary oxygen supply pipes distributed in the circumferential direction and whose inlet ends are respectively communicated with the secondary oxygen chamber, and the injection directions of the plurality of secondary oxygen supply pipes are respectively directed toward the flame zone.

Further, the side wall of the furnace body is provided with ventilation holes connecting the air inlet duct and the combustion area, and a plurality of the ventilation holes are arranged around the combustion area.

Further, the intake end of the gas collector is bent toward the inside of the combustion zone and the end face is open to form an intake port.

Further, the air inlet end of the gas collecting cylinder is provided with a gas collecting hole penetrating the wall of the gas collecting cylinder.

Further, the gas outlet end of the gas collector and the combustion barrel are arranged coaxially, and the included angle between the axial direction of the air inlet end of the gas collector and the axial direction of the gas outlet end of the gas collector is 90°.

Further, the furnace body is provided with a charging port communicating with the furnace chamber, and the charging port and the furnace port are respectively located on opposite sides of the furnace body.

Further, the included angle between the injection direction of the primary oxygen supply hole and the orientation of the gas outlet end of the combustion cylinder is an acute angle α.

Further, in the gas flow direction of the gas outlet end of the combustion cylinder, the primary oxygen supply jacket and the secondary oxygen supply jacket are sequentially arranged along the axis of the combustion cylinder; or

The secondary oxygen supply sleeve is sleeved on the outer periphery of the primary oxygen supply sleeve, and the outer peripheral wall of the primary oxygen supply sleeve is provided with a communication hole, and the communication hole communicates with the primary oxygen cavity and the secondary oxygen cavity.

Further, the grate includes:

A plurality of inversion rows are arranged in parallel below the combustion zone, two ends of each inversion row are respectively rotatably connected to the side wall of the furnace body, and one end of each inversion row is provided with a radial arm. ;

connecting rods, respectively hinged with the swing ends of the plurality of radial arms;

The telescopic mechanism is arranged on the furnace body, and the telescopic end is hinged with the connecting rod, and is used to push the inversion row to turn over through the connecting rod and the radial arm, so that the inversion row is sealed and blocked. The bottom surface of the combustion zone is opened or the bottom surface of the combustion zone is opened.

Further, the flipping row includes:

a cross bar, arranged below the furnace, two ends are respectively connected with the side wall of the furnace body in rotation, and one end is provided with the radial arm; and

A plurality of blocking bars, located in the same plane, are distributed at intervals along the axial direction of the horizontal bar and are respectively vertically connected to the horizontal bar.

Further, the primary oxygen supply holes are evenly distributed along the circumference of the gas outlet end of the combustion cylinder.

Further, a plurality of the secondary oxygen supply pipes are evenly distributed along the circumferential direction of the secondary oxygen supply jacket, and the intake end of the secondary oxygen supply pipe is connected to the secondary oxygen supply jacket and faces the flame. end of the area.

Further, the included angle between the injection direction of the secondary oxygen supply pipe and the orientation of the gas outlet end of the combustion cylinder is β, 10°≤β≤45°.

The beneficial effect of the biomass burner provided by the present invention is: compared with the prior art, in the biomass burner of the present invention, the air enters the combustion zone through the air inlet duct arranged around the combustion zone of the furnace, and the air in the air inlet duct is removed during the process. The combustion area is preheated to avoid the problem that the temperature of the combustion area of the furnace is lowered due to the low air temperature, resulting in an increase in the emission of pollutants. Connect the primary oxygen inlet pipe of the primary oxygen supply jacket with the oxygen-containing source such as the fan, so that the fan sends the air through the primary oxygen chamber and the primary oxygen supply hole into the gas outlet end of the combustion cylinder to mix with the combustible gas. At the same time, the secondary oxygen inlet pipe of the secondary oxygen supply jacket is connected to the oxygen-containing source such as the fan, so that the fan sends the air into the secondary oxygen chamber and sprays the air from the secondary oxygen supply pipe to the flame zone, and then to the flame zone. When supplementing oxygen, the mixed gas in the flame zone is stirred, so that the combustible gas in the flame zone is more fully mixed with oxygen, which accelerates the combustion and improves the combustion efficiency.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present invention. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a front view of a biomass burner provided by an embodiment of the present invention;

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

Fig. 3 is the detailed structure diagram of the burner in Fig. 2;

Fig. 4 is the top view of the grate in Fig. 1;

5 is a front view of a burner used in another embodiment of the present invention;

FIG. 6 is a cross-sectional view of FIG. 5 .

Among them, each reference sign in the figure:

1-Gas collection cylinder; 11-Gas collection hole; 2-Combustion cylinder; 21-Flame zone; 3-Primary oxygen supply jacket; 31-Primary oxygen chamber; 32-Primary oxygen inlet pipe; 33-Primary oxygen supply hole; 34-Connected Hole; 4-secondary oxygen supply jacket; 41-secondary oxygen chamber; 42-secondary oxygen supply pipe; 43-secondary oxygen supply pipe; 5-furnace body; 51-furnace chamber; 52-furnace mouth; 53-inlet Air duct; 531-vent; 54-feeding port; 6-grate; 61-turning row; 611-crossbar; 612-block bar; 62-radial arm; 63-connecting rod;

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Please refer to FIG. 1 to FIG. 6 together, and now the biomass burner provided by the embodiment of the present invention will be described. The biomass burner includes a furnace body 5 , a grate 6 , a burner, a primary oxygen supply jacket 3 and a secondary oxygen supply jacket 4 .

A furnace chamber 51 is provided inside the furnace body 5 , a furnace mouth 52 communicated with the furnace chamber 51 and an air inlet duct 53 arranged around the combustion zone at the lower part of the furnace chamber 51 and communicated with the combustion zone are arranged on the side walls. The grate 6 is arranged in the furnace body 5 and is located below the combustion zone, and is used to support the biomass fuel in the combustion zone. The burner includes a gas collecting cylinder 1 which is arranged in the furnace chamber 51 and whose intake end is used to collect combustible gas, and a combustion cylinder 2 which is arranged in the furnace mouth 52 and whose intake end is communicated with the gas collecting cylinder 1 gas outlet. A flame zone 21 is formed to the outside. The primary oxygen supply jacket 3 is arranged around the outer periphery of the gas outlet end of the combustion cylinder 2, and a primary oxygen cavity 31 is arranged inside the gas outlet end of the combustion cylinder 2. The primary oxygen supply jacket 3 is connected with a primary oxygen inlet pipe 32 for communicating with an oxygen-containing source. The side wall of the gas outlet end is provided with a primary oxygen supply hole 33 that communicates with the primary oxygen chamber 31 and the inner cavity of the gas outlet end of the combustion cylinder 2. The secondary oxygen supply jacket 4 is arranged around the outer periphery of the gas outlet end of the combustion cylinder 2, and a secondary oxygen cavity 41 is arranged inside the gas outlet end of the combustion cylinder 2. The secondary oxygen supply jacket 4 is connected with a secondary oxygen inlet pipe for communicating with the oxygen-containing source. 42 and a plurality of secondary oxygen supply pipes 43 distributed in the circumferential direction and the inlet ends are respectively communicated with the secondary oxygen chamber 41 , and the injection directions of the plurality of secondary oxygen supply pipes 43 are respectively directed towards the flame zone 21 .

Compared with the prior art, in the biomass burner of the embodiment of the present invention, the air enters the combustion zone through the air inlet duct 53 arranged around the combustion zone of the furnace 51, and the air in the air inlet duct 53 is preheated by the combustion zone in the process, avoiding Because the air temperature is too low, the temperature of the combustion area of the furnace 51 drops, resulting in an increase in the amount of pollutants emitted. The primary oxygen inlet pipe 32 of the primary oxygen supply jacket 3 is communicated with an oxygen-containing source such as a fan, so that the fan sends the air through the primary oxygen chamber 31 and the primary oxygen supply hole 33 into the gas outlet end of the combustion cylinder 2 to mix with the combustible gas, and the mixed gas After passing the point, combustion is formed in the flame zone 21; at the same time, the secondary oxygen inlet pipe 42 of the secondary oxygen supply jacket is communicated with an oxygen-containing source such as a fan, so that the fan sends air into the secondary oxygen chamber 41 and from the secondary oxygen supply pipe. 43 is sprayed to the flame zone 21, and oxygen is added to the flame zone 21 while stirring the mixed gas in the flame zone 21, so that the combustible gas in the flame zone 21 is more fully mixed with oxygen, accelerating the combustion and improving the combustion efficiency.

Specifically, the furnace body 5 may be a vertical cylindrical shape or a rectangular parallelepiped shape, and the interior of the furnace body 5 is a furnace chamber 51, and the bottom of the furnace chamber 51 is a combustion area, which is used for the combustion of biomass fuel. The furnace mouth 52 is arranged on the top wall or the side wall of the furnace body 5 and communicates with the furnace chamber 51 . The grate 6 is provided below the furnace 51 for supporting the fuel in the combustion zone. The air inlet duct 53 is arranged along the circumference of the furnace body 5 , one end communicates with the outside of the furnace body 5 to form an air inlet, and the other end communicates with the combustion area of the furnace 51 to supply oxygen to the combustion area of the furnace 51 . A plurality of through holes can also be opened on the inner wall of the air inlet duct 53 , so that the air inlet duct 53 communicates with the combustion area of the furnace 51 . One end of the air inlet duct 53 communicating with the outside of the furnace body 5 can be connected to a fan, and air is blown into the combustion zone through the fan.

The gas collecting tube 1 and the combustion tube 2 are respectively cylindrical structures. The two open ends of the gas collecting cylinder 1 are the intake end and the exhaust end, respectively, and the two ends of the combustion cylinder 2 are opened respectively as the intake end and the exhaust end. The outlet end of the gas collecting cylinder 1 is coaxially connected with the inlet end of the combustion cylinder 2 . The gas collector 1 is installed in the furnace chamber 51 of the biomass combustion furnace. More specifically, the inlet end of the gas collector 1 can be inserted into the combustion zone, or the inlet end of the gas collector 1 is located above the combustion zone. The combustion cylinder 2 is installed in the furnace opening 52 of the biomass burning furnace, and its gas outlet end may be located in the furnace opening 52 or protrude outside the furnace opening 52 . During combustion, the biomass fuel is filled in the furnace chamber 51, so that the biomass fuel will bury the air inlet of the gas collecting cylinder 1, and then the biomass fuel in the combustion area is ignited, the biomass fuel is incompletely burned, and the biomass fuel undergoes dry distillation. , after cracking and gasification, the combustible gas with carbon monoxide, hydrogen, methane and carbon dioxide, nitrogen, hydrogen sulfide, water, etc. as the main components is generated. The gas outlet end of the cylinder 2 flows, and the combustible gas in the combustion cylinder 2 is ejected from the gas outlet end, so that the combustible gas is concentrated on the axial outer side of the gas outlet end of the combustion cylinder 2 and forms a flame zone 21 in this area, which is ignited to form combustion.

The primary oxygen supply jacket 3 is an annular casing sleeved outside the gas outlet end of the combustion cylinder 2, and the inside thereof is an annular primary oxygen chamber 31. The primary oxygen inlet pipe 32 is communicated with the primary oxygen chamber 31, and an oxygen-containing source such as a fan sends oxygen-containing gas such as air into the primary oxygen chamber 31 through the primary oxygen inlet pipe 32. The oxygen-containing gas in the primary oxygen chamber 31 is The oxygen supply hole 33 enters the inner cavity of the gas outlet end of the combustion cylinder 2 to mix with the combustible gas for the first time. The mixed gas is axially injected into the flame zone 21 from the gas outlet end of the combustion cylinder 2 to form combustion after being ignited.

The secondary oxygen supply jacket 4 is an annular casing sleeved on the outside of the gas outlet end of the combustion cylinder 2, and the inside thereof is an annular secondary oxygen chamber 41. The secondary oxygen inlet pipe 42 is communicated with the secondary oxygen chamber 41, and an oxygen-containing source such as a fan sends oxygen-containing gas such as air into the primary oxygen chamber 31 through the secondary oxygen inlet pipe 42. Oxygen gas is sprayed to the flame zone 21 through the secondary oxygen supply pipe 43, and oxygen is added to the flame zone 21 while stirring the gas in the flame zone 21, so that the gas in the flame zone 21 is mixed more fully, accelerates combustion, and improves combustion efficiency.

Please refer to FIG. 2 , as a specific embodiment of the biomass burner provided by the present invention, the side wall of the furnace body 5 is provided with ventilation holes 531 connecting the air inlet duct 53 and the combustion area, and the ventilation holes 531 are arranged around the combustion area. There are multiple. This enables the air in the air inlet duct 53 to pass through the ventilation holes 531 distributed around the combustion area, and deliver air to the combustion area from all around, so as to ensure sufficient oxygen supply to each part of the combustion area.

Please refer to FIG. 1 and FIG. 2 together. As a specific embodiment of the biomass burner provided by the present invention, the furnace port 52 is provided on the side wall of the furnace body 5, and the intake end of the gas collecting cylinder 1 faces the interior of the combustion zone. Bend and open the end face to form the air inlet. With this arrangement, the flame area 21 can be located on the side of the furnace mouth 52, which is convenient for sending the flame into the equipment that needs to be heated, such as a heat exchanger, and at the same time, the air inlet of the gas collecting cylinder 1 enters the interior of the combustion area, so that the combustible gas produced in the combustion area is The gas can enter the gas collecting cylinder 1 more smoothly.

Please refer to FIG. 2 , FIG. 3 , FIG. 5 and FIG. 6 together. As a specific embodiment of the biomass burner provided by the present invention, the air inlet end of the gas collecting cylinder 1 is provided with a gas collecting hole penetrating the cylinder wall of the gas collecting cylinder 1 11. Specifically, the air collecting hole 11 may be a through hole with a cross-section of any shape, for example, the cross-section may be a circle, an ellipse, a rectangle, and the like. The air collecting holes 11 have a plurality of them arranged around the intake end of the air collecting cylinder 1 .

Please refer to FIG. 2 and FIG. 3 together. As a specific embodiment of the biomass burner provided by the present invention, the gas outlet end of the gas collector 1 and the combustion barrel 2 are coaxially arranged, and the axial direction of the intake end of the gas collector 1 is coaxial with the gas collector. The included angle of the axial direction of the gas outlet end of the gas cylinder 1 is 90°.

Specifically, the gas collecting tube 1 is installed horizontally in the furnace 51, and the combustion tube 2 is horizontally installed in the furnace opening 52 on the side of the furnace body 5, so that the gas outlet end of the combustion tube 2 is oriented parallel to the horizontal plane. The gas collecting tube 1 and the combustion tube 2 are located above the combustion area, the intake end of the gas collecting tube 1 is bent downward 90° towards the lower combustion area, and the end face of the intake end of the gas collecting tube 1 is opened to form an intake port.

Please refer to FIG. 2 together. As a specific embodiment of the biomass burner provided by the present invention, the furnace body 5 is provided with a charging port 54 that communicates with the furnace chamber 51. The charging port 54 and the furnace port 52 are respectively located opposite to the furnace body 5. on both sides.

Please refer to FIG. 3 together, as a specific embodiment of the biomass burner provided by the present invention, the included angle between the injection direction of the primary oxygen supply hole 33 and the direction of the gas outlet end of the combustion cylinder 2 is an acute angle α. This arrangement enables the airflow in the primary oxygen supply hole 33 to drive the combustible gas in the outlet end of the combustion cylinder 2 to be ejected from the outlet end of the combustion cylinder 2 , so that the flow of the combustible gas in the combustion cylinder 2 is smoother.

Specifically, the primary oxygen supply hole 33 is a straight hole, and its spraying direction is parallel to the axis. The included angle between the axis of the primary oxygen supply hole 33 and the axis of the combustion cylinder 2 is an acute angle α.

Please refer to Fig. 2, Fig. 3, Fig. 5 and Fig. 6 together. As a specific embodiment of the biomass burner provided by the present invention, in the gas flow direction of the gas outlet end of the combustion cylinder 2, the primary oxygen supply jacket 3 and the secondary The oxygen supply sleeve 4 is arranged in turn along the axis of the combustion cylinder 2; or the secondary oxygen supply sleeve 4 is sleeved on the outer periphery of the primary oxygen supply sleeve 3, and the outer peripheral wall of the primary oxygen supply sleeve 3 is provided with a communication hole 34, and the communication hole 34 communicates once Oxygen chamber 31 and secondary oxygen chamber 41 .

Please refer to FIG. 2 and FIG. 3 together. In the gas flow direction of the gas outlet end of the combustion cylinder 2, the primary oxygen supply jacket 3 and the secondary oxygen supply jacket 4 are arranged in sequence. This arrangement enables the combustible gas to flow in the gas outlet end of the combustion cylinder 2, and the oxygen-containing gas in the primary oxygen supply jacket 3 can enter the gas outlet end of the combustion cylinder 2 through the primary oxygen supply hole 33 earlier to be mixed with the combustible gas. Then, with the subsequent flow of the mixed gas in the outlet end of the combustion cylinder 2, the mixed gas can be mixed more fully. In addition, in order to spray the oxygen-containing gas to the flame zone 21 by the secondary oxygen supply pipe 43, the air pressure in the secondary oxygen chamber 41 is relatively large, and the airflow velocity is relatively fast, so the secondary oxygen supply jacket 4 is set closer to the flame zone 21, The oxygen-containing gas in the secondary oxygen chamber 41 can better cool the secondary oxygen supply jacket 4 and prolong the service life.

Please refer to FIG. 5 and FIG. 6 together, the secondary oxygen supply sleeve 4 is sleeved on the outer periphery of the primary oxygen supply sleeve 3, the outer peripheral wall of the primary oxygen supply sleeve 3 is provided with a communication hole 34, and the communication hole 34 communicates with the primary oxygen chamber 31 and Secondary oxygen chamber 41 . This arrangement can reduce the length occupied by the primary oxygen supply sleeve 3 and the secondary oxygen supply sleeve 4 in the axial direction of the gas outlet end of the combustion cylinder 2 , which facilitates the installation of the combustion cylinder 2 in the furnace mouth 52 . The outer peripheral wall of the primary oxygen supply jacket 3 can preheat the oxygen-containing gas in the secondary oxygen chamber 41 to improve the combustion efficiency, and the gas flow in the secondary oxygen chamber 41 can also cool the outer peripheral wall of the primary oxygen supply jacket 3, Avoid overheating of the secondary oxygen supply jacket 4.

Please refer to FIG. 2 and FIG. 4 together. As a specific embodiment of the biomass burner provided by the present invention, the grate 6 includes a plurality of inversion rows 61 , connecting rods 63 and a telescopic mechanism 64 .

A plurality of inversion rows 61 are arranged side by side below the combustion zone. Both ends of each inversion row 61 are rotatably connected to the side wall of the furnace body 5 respectively, and one end of each inversion row 61 is provided with a radial arm 62 . The connecting rods 63 are respectively hinged with the swing ends of the plurality of radial crank arms 62 . The telescopic mechanism 64 is arranged on the furnace body 5, and the telescopic end is hinged with the connecting rod 63, which is used to push the turning row 61 to turn over through the connecting rod 63 and the radial arm 62, so that the turning row 61 blocks the bottom surface of the combustion zone or opens the combustion the bottom of the area.

Specifically, the inversion row 61 can be a long mesh plate provided with a plurality of ash holes or a long grid structure welded by steel bars, and when the plane of the inversion row 61 is horizontal, the bottom surface of the combustion zone is closed, When the inversion row 61 is rotated, the plane of the inversion row 61 forms an included angle with the horizontal plane, thereby opening the bottom surface of the combustion zone. A plurality of inversion rows 61 are arranged horizontally side by side, and each inversion row 61 is rotatably installed on the part of the side wall of the furnace body 5 below the combustion zone, so that the inversion row 61 is installed below the combustion zone. The rotating shafts on the same side of the plurality of inversion rows 61 respectively pass out of the furnace body 5, and each rotating shaft is provided with a radial arm 62 arranged along the radial direction of its own rotating circumference. The connecting rods 63 are arranged horizontally and are in turn hinged with the radial swing arms of the plurality of inversion rows 61 . The telescopic mechanism 64 can be an air cylinder or a hydraulic cylinder, which is arranged horizontally, and one end is hinged to the bottom of the furnace body 5 , and the other end is hinged to one end of the connecting rod 63 .

Please also refer to FIG. 4 , as a specific embodiment of the biomass burner provided by the present invention, the inversion row 61 includes a cross bar 611 and a plurality of blocking bars 612 .

The cross bar 611 is arranged below the furnace chamber 51 , two ends are respectively connected with the side wall of the furnace body 5 in rotation, and one end is provided with a radial arm 62 . The plurality of blocking bars 612 are located in the same plane, are distributed at intervals along the axial direction of the cross bar 611 and are respectively vertically connected to the cross bar 611 .

Specifically, a plurality of transverse rods 611 are arranged horizontally side by side, and both ends of each transverse rod 611 are rotatably installed on the part of the side wall of the furnace body 5 located below the combustion zone, so that the inversion row 61 is installed below the combustion zone . The ends on the same side of the plurality of transverse rods 611 respectively protrude out of the furnace body 5, and the end of each transverse rod 611 is provided with a radial arm 62 arranged along the radial direction of its own rotation circle. Each cross bar 611 is welded with a plurality of blocking bars 612 , and the plurality of blocking bars 612 are horizontally arranged side by side along the axial direction of the cross bar 611 , and each blocking bar 612 is vertically connected to the cross bar 611 . After the biomass fuel in the combustion zone is burned, ash falls from the gap between the two adjacent baffle bars 612 .

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. Inside.

Claims (10)

1. a kind of biomass combustion machine characterized by comprising

Furnace body (5), inside are equipped with burner hearth (51), and furnace wall is equipped with the fire door (52) being connected to the burner hearth (51) and around described The air inlet duct (53) that the combustion zone of burner hearth (51) lower part is arranged and is connected to the combustion zone；

Fire grate (6) is set in the furnace body (5) and is located at the lower section of the combustion zone, the life being used to support in the combustion zone Biomass fuel；

Burner, including being set to, the burner hearth (51) are interior and inlet end is used to collect the gas collecting jar with ground-on cover plate (1) of fuel gas and set on institute State the combustion barrel (2) that in fire door (52) and inlet end is connected to the gas collecting jar with ground-on cover plate (1) outlet side, combustion barrel (2) outlet side Axially external formation flame zone (21)；

Primary oxygen supply set (3), the periphery around the combustion barrel (2) outlet side are arranged, and inside is equipped with around the combustion barrel (2) Oxygen chamber (31) of outlet side, the primary oxygen supply set (3) are connected with an oxygen feeding tube for being connected to oxygen-containing gas source (32), the side wall of combustion barrel (2) outlet side, which is equipped with, is connected in an oxygen chamber (31) and the combustion barrel (2) outlet side The primary oxygen supply hole (33) of chamber；And

Secondary oxygen supply covers (4), and the periphery around the combustion barrel (2) outlet side is arranged, and inside is equipped with around the combustion barrel (2) The secondary oxygen chamber (41) of outlet side, the secondary oxygen supply set (4) are connected with the secondary oxygen feeding tube for being connected to oxygen-containing gas source (42) and the secondary oxygen supplying tube (43) that is connected to respectively with the secondary oxygen chamber (41) of multiple circumferentially distributed and inlet end, Duo Gesuo The injection direction for stating secondary oxygen supplying tube (43) is respectively facing the flame zone (21).

2. biomass combustion machine as described in claim 1, it is characterised in that: the side wall of the furnace body (5) is equipped with connection institute The ventilation hole (531) of air inlet duct (53) and the combustion zone is stated, the ventilation hole (531) is equipped with multiple around the combustion zone.

3. biomass combustion machine as described in claim 1, it is characterised in that: the fire door (52) is set to the furnace body (5) On side wall, the inlet end of the gas collecting jar with ground-on cover plate (1) is towards the combustion zone internal bend and end face opening forms air inlet.

4. biomass combustion machine as claimed in claim 3, it is characterised in that: the inlet end of the gas collecting jar with ground-on cover plate (1), which is equipped with, to be run through The gas collection hole (11) of gas collecting jar with ground-on cover plate (1) barrel.

5. biomass combustion machine as claimed in claim 4, it is characterised in that: the outlet side of the gas collecting jar with ground-on cover plate (1) and the combustion Cylinder (2) coaxial arrangement is burnt, the axial direction of gas collecting jar with ground-on cover plate (1) inlet end is with the axial angle of the gas collecting jar with ground-on cover plate (1) outlet side 90°。

6. biomass combustion machine as claimed in claim 3, it is characterised in that: the furnace body (5) is equipped with and the burner hearth (51) The feeding port (54) of connection, the feeding port (54) and the fire door (52) are located at the opposite two sides of the furnace body (5).

7. biomass combustion machine as described in claim 1, it is characterised in that: it is described it is primary oxygen supply hole (33) injection direction with The angle of the direction of combustion barrel (2) outlet side is sharp angle α.

8. biomass combustion machine as described in claim 1, it is characterised in that: the gas stream in the combustion barrel (2) outlet side Upwards, the primary oxygen supply set (3) and the secondary oxygen supply set (4) set gradually along the axis of the combustion barrel (2)；Or

The secondary oxygen supply set (4) is sheathed on the periphery of the primary oxygen supply set (3), the periphery wall of the primary oxygen supply set (3) Equipped with intercommunicating pore (34), the intercommunicating pore (34) is connected to an oxygen chamber (31) and the secondary oxygen chamber (41).

9. biomass combustion machine as described in claim 1, it is characterised in that: the fire grate (6) includes:

(61) are arranged in multiple overturnings, are set to the lower section of the combustion zone side by side, each overturning arrange (61) both ends respectively with it is described The side wall of furnace body (5) is rotatablely connected, and one end of each overturning row (61) is equipped with radial connecting lever (62)；

Connecting rod (63), it is hinged with the swinging end of multiple radial connecting levers (62) respectively；

Telescoping mechanism (64) is set on the furnace body (5), and telescopic end and the connecting rod (63) hingedly, are used to pass through the connecting rod (63) and the radial connecting lever (62) pushes overturning row (61) overturning, so that combustion zone described in overturning row's (61) block Bottom surface or the open combustion zone bottom surface.

10. biomass combustion machine as claimed in claim 9, it is characterised in that: the overturning arranges (61) and includes:

Cross bar (611) is set to below the burner hearth (51), and both ends are rotatablely connected with the side wall of the furnace body (5) respectively, and one end is set There is the radial connecting lever (62)；And

Multiple blend stops (612), are in the same plane, along the cross bar (611) axially spaced-apart distribution and respectively with the cross Bar (611) vertically connects.