CN210141584U

CN210141584U - Biomass combustion machine

Info

Publication number: CN210141584U
Application number: CN201920474006.0U
Authority: CN
Inventors: 李娜
Original assignee: Shandong Zhengxinde Environmental Technology Development Co Ltd
Current assignee: Shandong Zhengxinde Environmental Technology Development Co Ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2020-03-13
Anticipated expiration: 2029-04-09

Abstract

The utility model provides a biomass burner belongs to living beings stove field, including furnace body, grate, combustor, primary oxygen suppliment cover and secondary oxygen suppliment cover. The furnace body is provided with an air inlet duct which is arranged around a combustion area at the lower part of the furnace chamber and is communicated with the combustion area. The grate is arranged in the furnace body and is positioned below the combustion area. The combustor comprises a gas collecting cylinder and a combustion cylinder, and a flame area is formed on the axial outer side of the gas outlet end of the combustion cylinder. The primary oxygen supply sleeve is arranged around the air outlet end of the combustion cylinder, and the primary oxygen cavity inside the primary oxygen supply sleeve is communicated with the air outlet end of the combustion cylinder through the primary oxygen supply hole. The secondary oxygen supply sleeve is provided with a plurality of secondary oxygen supply pipes with the spraying directions respectively facing the flame area. The air in the air inlet duct is preheated by the combustion zone, so that the problem that the discharged pollutants are increased due to the temperature reduction of the combustion zone of the hearth is avoided. The primary oxygen supply hole sends air into the combustion cylinder air outlet end, and the secondary oxygen supply pipe sprays air to the flame zone, so that combustible gas and oxygen in the flame zone are mixed more sufficiently, and the combustion efficiency is improved.

Description

Biomass combustion machine

Technical Field

The utility model belongs to the technical field of the living beings stove, more specifically say, relate to a biomass burning machine.

Background

The existing biomass burner is provided with a burner with a cylindrical structure, the lower end of the burner is a gas collecting cylinder extending into a hearth, and the upper end of the burner is a combustion cylinder arranged in the hearth. When the gas collecting device is used, the gas collecting cylinder collects combustible gas in the hearth, and the combustion cylinder guides out the combustible gas collected by the gas collecting cylinder for combustion.

For a large biomass combustion furnace, the combustion speed is high, the generated combustible gas is sufficient, and the flame is vigorous. However, large biomass burners are also prone to two problems: 1. a large amount of air required in the hearth is subjected to incomplete combustion, but the temperature in the hearth is easily reduced when the large amount of air enters the hearth, so that the content of harmful substances in combustible gas is increased, and the emission of pollutants is increased; 2. a large amount of combustible gas discharged by the combustion cylinder is difficult to be fully mixed with air, so that the combustible gas is not fully combusted, and the combustion efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a biomass combustion machine to solve the decline that causes the furnace internal temperature easily in the current a large amount of air admission furnace that exists among the prior art, make the harmful substance content among the combustible gas rise, the pollutant that leads to the emission increases, and a large amount of combustible gas of combustion cylinder exhaust is difficult to with the air intensive mixing, lead to the combustible gas burning insufficient, influence combustion efficiency's technical problem.

In order to achieve the above object, the utility model adopts the following technical scheme: provided is a biomass burner comprising:

the furnace body is internally provided with a hearth, and the wall of the furnace body is provided with a furnace opening communicated with the hearth and an air inlet duct arranged around a combustion zone at the lower part of the hearth and communicated with the combustion zone;

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

the burner comprises a gas collecting cylinder and a combustion cylinder, wherein the gas collecting cylinder is arranged in the hearth, the gas inlet end of the gas collecting cylinder is used for collecting combustible gas, the combustion cylinder is arranged in the hearth, the gas inlet end of the combustion cylinder is communicated with the gas outlet end of the gas collecting cylinder, and a flame area is formed on the axial outer side of the gas outlet end of the combustion cylinder;

the primary oxygen supply sleeve is arranged around the periphery of the air outlet end of the combustion cylinder, a primary oxygen cavity surrounding the air outlet end of the combustion cylinder is arranged in the primary oxygen supply sleeve, the primary oxygen supply sleeve is connected with a primary oxygen inlet pipe communicated with an oxygen-containing gas source, and a primary oxygen supply hole communicated with the primary oxygen cavity and an inner cavity of the air outlet end of the combustion cylinder is formed in the side wall of the air outlet end of the combustion cylinder; and

the secondary oxygen suppliment cover encircles the periphery setting of the end of giving vent to anger of a burning section of thick bamboo, inside is equipped with to encircle the secondary oxygen chamber of the end of giving vent to anger of a burning section of thick bamboo, the secondary oxygen suppliment cover is connected be used for with the secondary oxygen supply pipe that oxygen source intercommunication and a plurality of along circumference distribution and inlet end respectively with the secondary of secondary oxygen chamber intercommunication supplies oxygen pipe, and is a plurality of the injection direction of secondary oxygen supply pipe is respectively towards flame district.

Furthermore, the side wall of the furnace body is provided with a plurality of ventilation holes which are communicated with the air inlet duct and the combustion area, and the ventilation holes encircle the combustion area.

Furthermore, the air inlet end of the air collecting cylinder bends towards the inside of the combustion area, and the end face of the air collecting cylinder is opened to form an air inlet.

Furthermore, the air inlet end of the air collecting cylinder is provided with an air collecting hole penetrating through the cylinder wall of the air collecting cylinder.

Furthermore, the gas outlet end of the gas collecting cylinder and the combustion cylinder are coaxially arranged, and an included angle between the axial direction of the gas inlet end of the gas collecting cylinder and the axial direction of the gas outlet end of the gas collecting cylinder is 90 degrees.

Furthermore, the furnace body is provided with a feed inlet communicated with the hearth, and the feed inlet and the furnace opening are respectively positioned at two opposite sides of the furnace body.

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

Furthermore, the primary oxygen supply sleeve and the secondary oxygen supply sleeve are sequentially arranged along the axis of the combustion cylinder in the upward gas flow direction at the gas outlet end of the combustion cylinder; or

The secondary oxygen supply sleeve is sleeved on the periphery of the primary oxygen supply sleeve, the peripheral wall of the primary oxygen supply sleeve is provided with communicating holes, and the communicating holes are communicated with the primary oxygen cavity and the secondary oxygen cavity.

Further, the grate comprises:

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

the connecting rods are respectively hinged with the swinging ends of the radial crank arms;

the telescopic mechanism is arranged on the furnace body, and a telescopic end is hinged with the connecting rod and used for pushing the overturning row to overturn through the connecting rod and the radial connecting lever so as to seal or open the bottom surface of the combustion area.

Further, the flip row includes:

the cross rod is arranged below the hearth, two ends of the cross rod are respectively and rotatably connected with the side wall of the furnace body, and one end of the cross rod is provided with the radial crank arm; and

and the barrier strips are positioned in the same plane, are distributed at intervals along the axial direction of the cross rod and are respectively and vertically connected with the cross rod.

Further, the primary oxygen supply holes are uniformly distributed along the circumferential direction of the air outlet end of the combustion cylinder.

Furthermore, a plurality of secondary oxygen supply pipes are uniformly distributed along the circumferential direction of the secondary oxygen supply sleeve, and the air inlet ends of the secondary oxygen supply pipes are connected to the end face, facing the flame zone, of the secondary oxygen supply sleeve.

Furthermore, the included angle between the injection direction of the secondary oxygen supply pipe and the direction of the gas outlet end of the combustion cylinder is β, and β is more than or equal to 10 degrees and less than or equal to 45 degrees.

The utility model provides a biomass burner's beneficial effect lies in: compared with the prior art, the utility model discloses biomass burning machine, air get into the combustion area through the air inlet duct that encircles the setting of furnace combustion area, and the air in the in-process air inlet duct is preheated by the combustion area, avoids crossing the temperature that leads to the furnace combustion area because of air temperature low and descends, causes the problem that the pollutant of emission increases. A primary oxygen inlet pipe of the primary oxygen supply sleeve is communicated with an oxygen-containing gas source such as a fan, so that the fan sends air into the air outlet end of the combustion cylinder through the primary oxygen cavity and the primary oxygen supply hole to be mixed with combustible gas, and the mixed gas is ignited and then forms combustion in a flame zone; simultaneously, the secondary oxygen inlet pipe of the secondary oxygen supply sleeve is communicated with oxygen-containing gas sources such as a fan, so that the fan sends air into the secondary oxygen cavity and sprays the air to the flame zone from the secondary oxygen supply pipe, oxygen is supplemented to the flame zone, and meanwhile mixed gas in the flame zone is stirred, so that combustible gas and oxygen in the flame zone are mixed more fully, combustion is accelerated, and the combustion efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a front view of a biomass burner provided in an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a detailed block diagram of the burner of FIG. 2;

FIG. 4 is a top view of the grate of FIG. 1;

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

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

Wherein, in the figures, the respective reference numerals:

1-a gas collecting cylinder; 11-gas collecting holes; 2-a combustion cylinder; 21-a flame zone; 3-primary oxygen supply sleeve; 31-primary oxygen chamber; 32-primary oxygen inlet pipe; 33-primary oxygen supply hole; 34-a communication hole; 4-secondary oxygen supply sleeve; 41-secondary oxygen chamber; 42-secondary oxygen inlet pipe; 43-secondary oxygen supply pipe; 5-furnace body; 51-hearth; 52-furnace mouth; 53-air inlet duct; 531-vent; 54-a feeding port; 6-grate; 61-turning over rows; 611-a cross bar; 612-barrier strip; 62-radial crank arm; 63-connecting rod; 64-telescoping mechanism.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to fig. 6, a biomass burner according to an embodiment of the present invention will be described. The biomass burner comprises a furnace body 5, a fire grate 6, a burner, a primary oxygen supply sleeve 3 and a secondary oxygen supply sleeve 4.

The furnace body 5 is internally provided with a furnace chamber 51, and the side wall is provided with a furnace opening 52 communicated with the furnace chamber 51 and an air inlet duct 53 arranged around a combustion area at the lower part of the furnace chamber 51 and communicated with the combustion area. The grate 6 is arranged in the furnace body 5 and positioned below the combustion area and is used for supporting the biomass fuel in the combustion area. The burner comprises a gas collecting cylinder 1 arranged in a hearth 51 and used for collecting combustible gas at a gas inlet end and a combustion cylinder 2 arranged in a furnace mouth 52 and communicated with a gas outlet end of the gas collecting cylinder 1 at a gas inlet end, and a flame area 21 is formed on the axial outer side of the gas outlet end of the combustion cylinder 2. The periphery that once oxygen suppliment cover 3 was given vent to anger around a combustion section of thick bamboo 2 and is held sets up, and inside is equipped with the once oxygen chamber 31 that gives vent to anger around a combustion section of thick bamboo 2 and holds, and once oxygen suppliment cover 3 is connected with and is used for the oxygen pipe 32 of once advancing with oxygen source intercommunication, and the lateral wall that a combustion section of thick bamboo 2 was given vent to anger and holds the inner chamber is equipped with the once oxygen hole 33 that supplies of the oxygen chamber 31 of intercommunication and a. The secondary oxygen supply sleeve 4 surrounds the periphery setting of the end of giving vent to anger of a combustion section of thick bamboo 2, and inside is equipped with the secondary oxygen chamber 41 of the end of giving vent to anger around a combustion section of thick bamboo 2, and secondary oxygen supply sleeve 4 is connected with be used for with the secondary oxygen inlet pipe 42 that contains the oxygen source intercommunication and a plurality of along circumference distribution and inlet end respectively with the secondary oxygen chamber 41 intercommunication supply oxygen pipe 43, and the injection direction of a plurality of secondary oxygen supply pipes 43 is respectively towards flame district 21.

Compared with the prior art, the utility model discloses biomass burning machine, air get into the combustion area through the air inlet duct 53 that encircles the setting of furnace 51 combustion area, and the air in the in-process air inlet duct 53 is preheated by the combustion area, avoids leading to the temperature decline of furnace 51 combustion area because of air temperature crosses lowly, causes the problem that the pollutant of emission increases. The primary oxygen inlet pipe 32 of the primary oxygen supply sleeve 3 is communicated with an oxygen-containing gas source such as a fan, so that the fan sends air into the air outlet end of the combustion cylinder 2 through the primary oxygen cavity 31 and the primary oxygen supply hole 33 to be mixed with combustible gas, and the mixed gas forms combustion in the flame zone 21 after being ignited; meanwhile, the secondary oxygen inlet pipe 42 of the secondary oxygen supply sleeve is communicated with an oxygen-containing gas source such as a fan, so that the fan sends air into the secondary oxygen cavity 41 and sprays the air to the flame zone 21 from the secondary oxygen supply pipe 43, oxygen is supplemented to the flame zone 21, and mixed gas in the flame zone 21 is stirred, so that combustible gas and oxygen in the flame zone 21 are mixed more fully, combustion is accelerated, and combustion efficiency is improved.

Specifically, the furnace body 5 may be a vertical cylinder or a rectangular parallelepiped, and the inside of the furnace body is a hearth 51, and the bottom of the hearth 51 is a combustion area for the combustion of biomass fuel. The furnace opening 52 is provided on the top wall or the side wall of the furnace body 5 and communicates with the furnace chamber 51. A grate 6 is arranged below the furnace 51 for supporting the fuel in the combustion zone. The air inlet duct 53 is arranged along the circumferential direction of the furnace body 5, one end of the air inlet duct is communicated with the outside of the furnace body 5 to form an air inlet, and the other end of the air inlet duct is communicated with the combustion area of the hearth 51 to supply oxygen for the combustion area of the hearth 51. A plurality of through holes can also be arranged on the inner wall of the air inlet duct 53, so that the air inlet duct 53 is communicated with the combustion area of the hearth 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 by the fan.

The gas collecting cylinder 1 and the combustion cylinder 2 are respectively of a cylindrical structure. The two open ends of the gas collecting cylinder 1 are respectively an air inlet end and an air outlet end, and the two open ends of the combustion cylinder 2 are respectively an air inlet end and an air outlet end. The air outlet end of the air collecting cylinder 1 is coaxially connected with the air inlet end of the combustion cylinder 2. The gas collecting cylinder 1 is installed in the hearth 51 of the biomass combustion furnace, and more specifically, the gas inlet end of the gas collecting cylinder 1 can be inserted into the combustion zone, or the gas inlet end of the gas collecting cylinder 1 is positioned above the combustion zone. The combustion cylinder 2 is installed in a furnace opening 52 of the biomass combustion furnace, and the gas outlet end of the combustion cylinder can be positioned in the furnace opening 52 or protrude out of the furnace opening 52. During combustion, biomass fuel is filled in the hearth 51, so that the biomass fuel submerges the air inlet of the air collecting cylinder 1, then the biomass fuel in the combustion area is ignited, the biomass fuel is incompletely combusted, the biomass fuel is subjected to dry distillation, cracking and gasification to generate combustible gas with carbon monoxide, hydrogen, methane, carbon dioxide, nitrogen, hydrogen sulfide, water and the like as main components, the combustible gas enters the air collecting cylinder 1 from the air inlet of the air collecting cylinder 1 and then flows to the air outlet end of the combustion cylinder 2, the combustible gas in the combustion cylinder 2 is sprayed out from the air outlet end, so that the combustible gas is concentrated on the axial outer side of the air outlet end of the combustion cylinder 2 and forms a flame area 21 in the area, and combustion is formed after ignition.

The primary oxygen supply sleeve 3 is a circular ring-shaped shell body which is sleeved outside the air outlet end of the combustion cylinder 2, and a circular ring-shaped primary oxygen cavity 31 is arranged inside the primary oxygen supply sleeve. The primary oxygen inlet pipe 32 is communicated with the primary oxygen chamber 31, an oxygen-containing gas source such as a fan and the like sends oxygen-containing gas such as air and the like into the primary oxygen chamber 31 through the primary oxygen inlet pipe 32, the oxygen-containing gas in the primary oxygen chamber 31 enters an inner cavity of the air outlet end of the combustion cylinder 2 from the primary oxygen supply hole 33 to be mixed with combustible gas for the first time, and the mixed gas is axially sprayed into the flame zone 21 from the air outlet end of the combustion cylinder 2 and forms combustion after being ignited.

The secondary oxygen supply sleeve 4 is a circular ring-shaped shell body which is sleeved outside the air outlet end of the combustion cylinder 2, and the interior of the secondary oxygen supply sleeve is a circular ring-shaped secondary oxygen cavity 41. The secondary oxygen inlet pipe 42 is communicated with the secondary oxygen chamber 41, an oxygen-containing gas 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, the oxygen-containing gas in the secondary oxygen chamber 41 is sprayed to the flame zone 21 through the secondary oxygen supply pipe 43, oxygen is supplemented into the flame zone 21, and simultaneously gas in the flame zone 21 is stirred, so that the gas in the flame zone 21 is fully mixed, combustion is accelerated, and combustion efficiency is improved.

Referring to fig. 2, as a specific embodiment of the biomass burner provided by the present invention, a plurality of vent holes 531 are disposed on the sidewall of the furnace body 5 to communicate the air inlet duct 53 with the combustion area, and the vent holes 531 surround the combustion area. So that the air in the air inlet duct 53 can be delivered to the combustion zone from the periphery through the air holes 531 distributed around the combustion zone, thereby ensuring sufficient oxygen supply to each part of the combustion zone.

Referring to fig. 1 and 2, as a specific embodiment of the biomass burner provided by the present invention, the burner opening 52 is disposed on the sidewall of the furnace body 5, and the air inlet end of the gas collecting cylinder 1 is bent toward the inside of the combustion area and the end surface is opened to form an air inlet. By adopting the arrangement, the flame zone 21 can be positioned on the side surface of the furnace mouth 52, so that the flame can be conveniently sent into equipment needing heating, such as a heat exchanger, and meanwhile, the air inlet of the gas collecting cylinder 1 enters the combustion zone, so that the combustible gas generated in the combustion zone can more smoothly enter the gas collecting cylinder 1.

Referring to fig. 2, fig. 3, fig. 5 and fig. 6, as an embodiment of the biomass burner provided by the present invention, a gas collecting hole 11 penetrating through a wall of the gas collecting cylinder 1 is provided at a gas inlet end of the gas collecting cylinder 1. Specifically, the gas collecting holes 11 may be through holes with arbitrary cross-sections, for example, the cross-sections may be circular, oval, rectangular, etc. The gas collecting hole 11 has a plurality arranged around the gas inlet end of the gas collecting barrel 1.

Referring 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 collecting cylinder 1 is coaxial with the combustion cylinder 2, and an included angle between the axial direction of the gas inlet end of the gas collecting cylinder 1 and the axial direction of the gas outlet end of the gas collecting cylinder 1 is 90 °.

Specifically, the gas collecting barrel 1 is horizontally installed in the hearth 51, and the combustion barrel 2 is horizontally installed in the furnace mouth 52 on the side of the furnace body 5, so that the direction of the gas outlet end of the combustion barrel 2 is parallel to the horizontal plane. The gas collecting cylinder 1 and the combustion cylinder 2 are positioned above the combustion area, the gas inlet end of the gas collecting cylinder 1 is bent downwards by 90 degrees and faces the combustion area below, and the end face of the gas inlet end of the gas collecting cylinder 1 is opened to form a gas inlet.

Referring to fig. 2, as an embodiment of the biomass burner provided by the present invention, the furnace body 5 is provided with a feeding port 54 communicated with the furnace chamber 51, and the feeding port 54 and the furnace port 52 are respectively located at two opposite sides of the furnace body 5.

Please refer to fig. 3 together, as a specific embodiment of the biomass burner provided by the present invention, the spraying direction of the primary oxygen supply hole 33 and the included angle of the orientation of the air outlet end of the combustion cylinder 2 are an acute angle α. with this arrangement, the airflow in the primary oxygen supply hole 33 can drive the combustible gas in the air outlet end of the combustion cylinder 2 to be sprayed out from the air 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 the injection direction thereof is parallel to the axis, and 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.

Referring to fig. 2, fig. 3, fig. 5 and fig. 6, as a specific embodiment of the biomass burner provided by the present invention, in the gas flow direction at the gas outlet end of the combustion cylinder 2, the primary oxygen supply sleeve 3 and the secondary oxygen supply sleeve 4 are sequentially arranged along the axis of the combustion cylinder 2; or the secondary oxygen supply sleeve 4 is sleeved on the periphery of the primary oxygen supply sleeve 3, the peripheral wall of the primary oxygen supply sleeve 3 is provided with a communication hole 34, and the communication hole 34 is communicated with the primary oxygen cavity 31 and the secondary oxygen cavity 41.

Referring to fig. 2 and 3 together, the primary oxygen supply jacket 3 and the secondary oxygen supply jacket 4 are sequentially disposed in the gas flow direction at the gas outlet end of the combustion cylinder 2. This kind of setting makes combustible gas give vent to anger the in-process that flows in the end at a combustion section of thick bamboo 2, and the oxygen-containing gas in the oxygen suppliment cover 3 can give vent to anger through the earlier entering combustion section of thick bamboo 2 of once oxygen suppliment hole 33 and mix in the end with combustible gas, later along with the follow-up flow in combustion section of thick bamboo 2 gives vent to anger the end of mist for more abundant that mist can mix. In addition, in order that the secondary oxygen supply pipe 43 sprays the oxygen-containing gas to the flame zone 21, the air pressure in the secondary oxygen cavity 41 is larger, the air flow velocity is faster, the secondary oxygen supply sleeve 4 is arranged closer to the flame zone 21, the oxygen-containing gas in the secondary oxygen cavity 41 can better cool the secondary oxygen supply sleeve 4, and the service life is prolonged.

Referring to fig. 5 and 6, the secondary oxygen supply sleeve 4 is sleeved on the periphery of the primary oxygen supply sleeve 3, the peripheral wall of the primary oxygen supply sleeve 3 is provided with a communication hole 34, and the communication hole 34 is communicated with the primary oxygen chamber 31 and the secondary oxygen chamber 41. The arrangement can reduce the axial occupied length of the primary oxygen supply sleeve 3 and the secondary oxygen supply sleeve 4 at the air outlet end of the combustion cylinder 2, and is convenient for the combustion cylinder 2 to be installed in the furnace mouth 52. The peripheral wall of the primary oxygen supply sleeve 3 can preheat the oxygen-containing gas in the secondary oxygen cavity 41, so that the combustion efficiency is improved, meanwhile, the gas flowing in the secondary oxygen cavity 41 can also cool the peripheral wall of the primary oxygen supply sleeve 3, and the over-temperature of the secondary oxygen supply sleeve 4 is avoided.

Referring to fig. 2 and 4 together, as an embodiment of the biomass burner provided by the present invention, the grate 6 includes a plurality of turning rows 61, a connecting rod 63 and a telescopic mechanism 64.

A plurality of upset row 61 are located the below in combustion area side by side, and every upset row 61 both ends rotate with the lateral wall of furnace body 5 respectively and are connected, and the one end of every upset row 61 is equipped with radial crank arm 62. The links 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 and used for pushing the turnover row 61 to turn over through the connecting rod 63 and the radial crank arm 62, so that the turnover row 61 blocks the bottom surface of the combustion area or opens the bottom surface of the combustion area.

Specifically, the turnover row 61 may be a long-strip mesh plate provided with a plurality of ash falling holes or a long-strip mesh structure welded by using steel bars, the bottom surface of the combustion area is closed when the plane of the turnover row 61 is horizontal, and an included angle is formed between the plane of the turnover row 61 and the horizontal surface after the turnover row 61 rotates, so that the bottom surface of the combustion area is opened. A plurality of the turnover rows 61 are horizontally arranged side by side, and both ends of each turnover row 61 are rotatably installed on the portion of the side wall of the furnace body 5 below the combustion zone, so that the turnover rows 61 are installed below the combustion zone. The rotating shafts on the same side of the turnover rows 61 respectively penetrate out of the furnace body 5, and each rotating shaft is provided with a radial crank arm 62 which is arranged along the radial direction of the self-rotating circumference. The connecting rods 63 are arranged horizontally and are in turn articulated with the radial oscillating arms of the plurality of overturning rows 61. The telescopic mechanism 64 may be a pneumatic or hydraulic cylinder which is horizontally disposed and has one end hinged to the bottom of the furnace body 5 and the other end hinged to one end of the connecting rod 63.

Referring to fig. 4, as an embodiment of the biomass burner provided by the present invention, the turning row 61 includes a cross bar 611 and a plurality of bars 612.

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

Specifically, a plurality of rails 611 are horizontally arranged side by side, and both ends of each rail 611 are rotatably installed on a portion of the sidewall of the furnace body 5 below the combustion zone, so that the bank 61 is installed below the combustion zone. The ends of the plurality of cross bars 611 on the same side respectively penetrate out of the furnace body 5, and the end of each cross bar 611 is provided with a radial crank arm 62 arranged along the radial direction of the self-rotating circumference. A plurality of baffle strips 612 are welded on each cross rod 611, the plurality of baffle strips 612 are horizontally arranged side by side along the axial direction of the cross rod 611, and each baffle strip 612 is vertically connected with the cross rod 611. After the biomass fuel in the combustion zone is combusted, ash falls from the gap between two adjacent bars 612.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A biomass burner, comprising:

the furnace comprises a furnace body (5), wherein a hearth (51) is arranged in the furnace body, a furnace opening (52) communicated with the hearth (51) and an air inlet duct (53) arranged around a combustion area at the lower part of the hearth (51) and communicated with the combustion area are arranged on the wall of the furnace;

the fire grate (6) is arranged in the furnace body (5) and positioned below the combustion zone and is used for supporting the biomass fuel in the combustion zone;

the burner comprises a gas collecting cylinder (1) which is arranged in the hearth (51) and the gas inlet end of which is used for collecting combustible gas and a combustion cylinder (2) which is arranged in the furnace mouth (52) and the gas inlet end of which is communicated with the gas outlet end of the gas collecting cylinder (1), wherein a flame zone (21) is formed on the axial outer side of the gas outlet end of the combustion cylinder (2);

the primary oxygen supply sleeve (3) is arranged around the periphery of the air outlet end of the combustion cylinder (2), a primary oxygen cavity (31) surrounding the air outlet end of the combustion cylinder (2) is arranged inside the primary oxygen supply sleeve (3), the primary oxygen supply sleeve (3) is connected with a primary oxygen inlet pipe (32) used for being communicated with an oxygen-containing gas source, and a primary oxygen supply hole (33) communicated with the primary oxygen cavity (31) and the inner cavity of the air outlet end of the combustion cylinder (2) is formed in the side wall of the air outlet end of the combustion cylinder (2); and

secondary oxygen suppliment cover (4), encircle the periphery setting of the end of giving vent to anger of a combustion section of thick bamboo (2), inside is equipped with to encircle secondary oxygen chamber (41) of the end of giving vent to anger of a combustion section of thick bamboo (2), secondary oxygen suppliment cover (4) be connected with be used for with the secondary oxygen source intercommunication advance oxygen pipe (42) and a plurality of along circumference distribution and the end of admitting air respectively with secondary oxygen chamber (41) the secondary of intercommunication supplies oxygen pipe (43), and is a plurality of the injection direction of secondary oxygen supply pipe (43) is faced respectively flame district (21).

2. The biomass burner of claim 1, wherein: be equipped with the intercommunication on the lateral wall of furnace body (5) air inlet duct (53) with ventilation hole (531) in combustion area, ventilation hole (531) encircle the combustion area is equipped with a plurality ofly.

3. The biomass burner of claim 1, wherein: the furnace mouth (52) is arranged on the side wall of the furnace body (5), the air inlet end of the gas collecting cylinder (1) is bent towards the inside of the combustion area, and the end face of the gas collecting cylinder is opened to form an air inlet.

4. The biomass burner of claim 3, wherein: and the air inlet end of the air collecting cylinder (1) is provided with an air collecting hole (11) penetrating through the cylinder wall of the air collecting cylinder (1).

5. The biomass burner of claim 4, wherein: the gas outlet end of the gas collecting cylinder (1) and the combustion cylinder (2) are coaxially arranged, and the included angle between the axial direction of the gas inlet end of the gas collecting cylinder (1) and the axial direction of the gas outlet end of the gas collecting cylinder (1) is 90 degrees.

6. The biomass burner of claim 3, wherein: the furnace body (5) is provided with a feeding port (54) communicated with the hearth (51), and the feeding port (54) and the furnace port (52) are respectively positioned at two opposite sides of the furnace body (5).

7. The biomass burner according to claim 1, wherein the included angle between the spraying direction of the primary oxygen supply hole (33) and the direction of the air outlet end of the combustion barrel (2) is an acute angle α.

8. The biomass burner of claim 1, wherein: the gas flow direction at the gas outlet end of the combustion cylinder (2) is upward, and the primary oxygen supply sleeve (3) and the secondary oxygen supply sleeve (4) are sequentially arranged along the axis of the combustion cylinder (2); or

Secondary oxygen suppliment cover (4) cover is located the periphery of primary oxygen suppliment cover (3), the periphery wall of primary oxygen suppliment cover (3) is equipped with intercommunicating pore (34), intercommunicating pore (34) intercommunication primary oxygen chamber (31) with secondary oxygen chamber (41).

9. The biomass burner of claim 1, wherein: the grate (6) comprises:

the multiple turnover rows (61) are arranged below the combustion zone in parallel, two ends of each turnover row (61) are respectively and rotatably connected with the side wall of the furnace body (5), and one end of each turnover row (61) is provided with a radial crank arm (62);

the connecting rods (63) are respectively hinged with the swinging ends of the radial crank arms (62);

the telescopic mechanism (64) is arranged on the furnace body (5), and a telescopic end of the telescopic mechanism is hinged to the connecting rod (63) and used for pushing the turnover row (61) to turn over through the connecting rod (63) and the radial crank arm (62), so that the turnover row (61) blocks the bottom surface of the combustion area or opens the bottom surface of the combustion area.

10. The biomass burner of claim 9, wherein: the flip row (61) comprises:

the cross rod (611) is arranged below the hearth (51), two ends of the cross rod are respectively and rotatably connected with the side wall of the furnace body (5), and one end of the cross rod is provided with the radial crank arm (62); and

and the barrier strips (612) are positioned in the same plane, are distributed at intervals along the axial direction of the cross rod (611) and are respectively and vertically connected with the cross rod (611).