CN210107364U - Biomass particle heating furnace - Google Patents

Abstract

The utility model discloses a biomass particle heating furnace, which comprises a combustion chamber, a combustion liner positioned in the combustion chamber, and a feeding device for conveying materials in a storage bin to the combustion liner; the combustion liner comprises a combustion box, a rotary grate and a fixed grate are arranged in the combustion box, the rotary grate is positioned above the fixed grate, the rotary grate and the combustion box are rotatably installed, the fixed grate is fixed with the combustion box, and a slag discharging port is reserved between the fixed grate and the combustion box and used for discharging coke slag on the fixed grate through rotation of the rotary grate. During decoking, the rotary grate rotates 180 degrees in a directional mode, coke slag on the rotary grate and biomass particles which are being combusted turn over to the fixed grate thoroughly, the biomass particles continue to combust on the fixed grate and ignite the biomass particles which fall on the rotary grate newly, when the rotary grate turns over 180 degrees again, the coke slag is pushed out of the slag discharge port, in the decoking process, flame cannot be extinguished, no shutdown is performed for decoking, decoking is thorough, and the heating furnace can use various biomass particles.

Description

Biomass particle heating furnace

Technical Field

The utility model relates to a heating stove technical field, specific theory relates to a living beings granule heating stove.

Background

The biomass fuel is used for replacing coal for heating, so that smoke and other harmful gases generated in the coal combustion process are reduced, the biomass fuel cannot pollute the environment during combustion, and the environment-friendly concept is better met. The biomass particles can be formed by crushing and compressing raw materials of crops such as rice husks, corn husks, peanut husks and the like, and are clean and attractive; and along with the continuous deepening of wood processing and the implementation of the recovery concept, the waste wood chips and the wood can also be used for manufacturing biomass fuel, so that the environmental pollution caused by incineration treatment is avoided, and the reutilization of wastes is realized.

At present, the biomass particle heating furnace in the prior art has the following problems caused by coking when in use:

(1) most biomass particles can be coked after being combusted to generate coke slag, the coking causes unsmooth air inlet, the biomass particles can emit black smoke when being insufficiently combusted, substances in the black smoke are easily adsorbed in a furnace wall and a smoke exhaust pipeline, so that damage such as blockage and corrosion to equipment can be caused, and a coke block blocks an ignition port to cause that a furnace can not be normally ignited;

(2) when the biomass particle burning device is used, biomass particles are not burnt timely due to coking, but the feeding speed of the biomass particles is unchanged, so that the biomass particles are accumulated and rise in a burning box and continuously overflow into an ash hopper to cause ignition in the whole furnace, flame is not easy to extinguish after the furnace is stopped, potential safety hazards exist, in addition, the biomass particles can block a feeding channel to cause material blockage after the coking time is long, and accordingly, the flame is introduced into a storage bin to cause safety accidents;

(3) as the high-quality biomass particles which are not coked on the market are too few and are in a supply-short-demand state, the price of the biomass particles continuously rises, and the use cost of consumers is continuously increased;

(4) when using coked biomass particles, the furnace can create a series of failure problems that add to the after-market costs to the manufacturer and distributor, affecting the brand and public praise.

To above-mentioned coking problem, chinese utility model patent CN206269118U discloses a living beings granule firing equipment, and this equipment includes deslagging system 6, and deslagging system 6 includes horizontal decoking spiral 62 and drives decoking spiral 62 and use slagging-off motor 61, and during the decoking, slagging-off motor 61 drives decoking spiral 62 and rotates to release combustion chamber 2 with the cinder, also can adopt pusher 63 to push out combustion chamber 2 with the cinder flat. However, when the device works, the decoking screw 62 and the coke pusher 63 can extinguish the flame, and the decoking is not complete, so that the ventilation opening on the fire grate is blocked. In addition, the coke is removed by a roller by manufacturers, but when the roller rotates, primer falls down to cause flameout; moreover, if the coke is not cleaned in time, a large coke block is formed, the coke slag cannot be removed, and the coke is not cleaned completely.

The material loading device for the biomass particle heating furnace adopted in the prior art mainly adopts circuitous material loading, is CN206269118U as the publication number, and the name is that a biomass particle combustion device's Chinese utility model patent is shown, and material loading device is the shape of falling V, and corner contained angle less than or equal to 90, screw conveyer slope setting, screw conveyer inclined upward transport biomass particle, biomass particle leans on self gravity to slide into furnace through the conveying pipeline 7 of slope and burns. By adopting the feeding mode, the flame cannot flow into the storage bin along the feeding device. However, because the particles manufactured by factories for manufacturing biomass particles are different in length, when the particles are pushed upwards in an inclined mode, the long particles are easily stuck at corners and cannot fall off, and material blocking is caused. In addition, certain powder can be produced to the granule in transportation and use, when pushing up to one side, through the extrusion of auger delivery axle, powder and granule extrude the blocking easily, are difficult to drop in feed opening department, lead to the card material. After the material is blocked, the following problems can be caused:

(1) the flame is extinguished, the heating furnace stops working, and normal heating cannot be realized;

(2) the damage of the motor causes certain property loss;

(3) the after-sale problem is more, the after-sale cost is high, the after-sale problem of enterprises is caused, and the brand public praise is influenced.

In addition, current living beings granule heating stove furnace gate only has one, when clearing up cigarette ash, need put out fire, then open the furnace gate, just can take out ash box clearance cigarette ash, complex operation, the deashing is inconvenient. The combustion chamber is connected with the vertical smoke tube through the transverse smoke tube, smoke enters the vertical smoke tube through the transverse smoke tube and is finally discharged out of the heating furnace, but the transverse smoke tube is easily blocked by smoke ash, and the smoke ash is inconvenient to clean.

Disclosure of Invention

To the above problem, the utility model aims to solve the technical problem that: provides a biomass particle heating furnace which can be thoroughly decoked and flame can not be extinguished.

In order to solve the technical problem, the technical scheme of the utility model is that:

a biomass pellet heating furnace comprising: the device comprises a combustion chamber, a combustion liner positioned in the combustion chamber, and a feeding device for conveying materials in a storage bin to the combustion liner;

the combustion liner comprises a combustion box with an opening at the upper end, a fire grate is arranged in the combustion box and comprises a rotary fire grate and a fixed fire grate, the rotary fire grate is located above the fixed fire grate, the rotary fire grate and the combustion box are rotatably installed, the fixed fire grate is fixed with the combustion box, and a slag discharge port is reserved between the fixed fire grate and the combustion box and used for discharging coke slag on the fixed fire grate through rotation of the rotary fire grate.

Preferably, two ends of the rotary grate are respectively and fixedly provided with a rotating support part, two opposite side walls of the combustion box are respectively provided with a rotating support hole, and the two rotating support parts are respectively and rotatably arranged in the two rotating support holes.

Preferably, one of the rotation supports is connected to a power unit.

Preferably, the bottom end of the combustion box is supported on an ash box, the ash box comprises an ash box and a coke residue box, the ash box is U-shaped, and the coke residue box is positioned in the U-shaped opening.

Preferably, a supporting plate is fixedly arranged on the inner surface of the coke oven body in the circumferential direction, and the combustion box is supported on the supporting plate.

Preferably, the front side of the heating furnace is provided with a furnace door; the furnace gate includes visit fire furnace gate and deashing furnace gate, visit fire furnace gate is located the front side of combustion chamber, the deashing furnace gate is located the front side of ash box.

Preferably, the feeding device comprises a feeding motor, a screw conveyor and a discharging pipe, the screw conveyor comprises a screw conveying shaft and a conveying pipe sleeved outside the screw conveying shaft, the screw conveying shaft is driven by the feeding motor, a feeding hole is formed in the upper side of the conveying pipe, a discharging hole of the conveying pipe is connected with a feeding end of the discharging pipe, an included angle between the discharging pipe and the screw conveying shaft is an obtuse angle, and the discharging pipe is arranged in a downward inclined mode.

Preferably, the obtuse angle ranges are: 120-160 degrees.

Preferably, the conveying pipe and the spiral conveying shaft are horizontally arranged.

Preferably, the combustion chamber is connected with a smoke exhaust device;

the left side of the combustion chamber is provided with a left side plate, the right side of the combustion chamber is provided with a right side plate, the outer side of the combustion chamber is provided with a heat exchange chamber, the heat exchange chamber is provided with a cold air inlet and a hot air outlet, and the heat exchange chamber comprises an upper heat exchange area, a left heat exchange area, a right heat exchange area and a rear heat exchange area which are communicated;

the smoke exhaust device comprises a vertical smoke pipe, a smoke exhaust settling chamber and a smoke exhaust fan, the vertical smoke pipe is arranged in the left heat exchange area and the right heat exchange area respectively, an opening at one side, facing the combustion chamber, of the upper end of the vertical smoke pipe forms a smoke pipe smoke hole, the corresponding positions of the left side plate and the right side plate and the smoke pipe smoke hole are bent outwards to form a bent portion, the bent portion is provided with a side plate smoke hole corresponding to the smoke pipe smoke hole, and the bent portion is connected with the vertical smoke pipe in a sealing mode.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

(1) because the fire grate comprises the rotary fire grate and the fixed fire grate, the rotary fire grate is positioned above the fixed fire grate, when the heating furnace normally works, biomass granular fuel is combusted on the rotary fire grate, when coke is cleared, the rotary fire grate rotates 180 degrees directionally, coke slag on the rotary fire grate and biomass granules which are being combusted are completely turned over to the fixed fire grate, the biomass granules continue to be combusted on the fixed fire grate, and the biomass granules which are newly dropped on the rotary fire grate are ignited, the combustion state is kept, flame can not be extinguished, coke can be cleared without stopping, the fire grate rotates 180 degrees and can completely turn over the coke slag to the fixed fire grate, the coke is really cleared completely, when the rotary fire grate rotates 180 degrees directionally again, the granules which are being combusted on the rotary fire grate and the coke slag are turned over to the fixed fire grate, and simultaneously, the rotary fire grate can push out the slag discharge opening, according to the set interval time, the rotary grate repeats the actions;

(2) after the coke is completely removed, air is smoothly fed, biomass particles are fully combusted, black smoke cannot be emitted, and an ignition port cannot be blocked;

(3) when coke is cleaned, the rotary grate and the fixed grate simultaneously have the biomass particle combustion, so that the combustion is assisted and is more sufficient;

(4) the biomass particles are combusted timely, so that the biomass particles cannot be accumulated in the feeding channel, flame is introduced into the storage bin, and safety accidents are caused;

(5) the heating furnace can be widely used for various biomass particles, and the material selection is avoided, so that the use cost is greatly reduced.

(6) Because the included angle between the blanking pipe and the spiral conveying shaft is designed to be an obtuse angle, particles formed by extruding long particles and powder into blocks can be pushed out forcibly, the technical problem that the biomass particles cannot be discharged due to material blocking caused by the included angle between the blanking pipe and the spiral conveying shaft being within 90 degrees and 90 degrees is solved, flame is prevented from entering the stock bin, and the heating furnace is safe to use;

(7) the biomass particle furnace can not break fire, and the heating is normal;

(8) the motor can not be damaged, and no property loss exists;

(9) the after-sale problem is less, and the after-sale cost is low;

(10) the lower part of the combustion liner is provided with the ash box and the coke residue box, the furnace door is divided into a fire detection furnace door and an ash removal furnace door, the ash removal furnace door is opened, the ash box and the coke residue box can be drawn out, and the ash and the coke residue can be conveniently cleaned;

(11) because the upper end of vertical tobacco pipe forms the tobacco pipe mouth towards one side opening of combustion chamber, left side board and right side board outwards bend with the corresponding department of tobacco pipe mouth and form the bending part, the bending part is equipped with the curb plate mouth with the corresponding department of tobacco pipe mouth, bending part and tobacco pipe sealing connection, the flue gas that the combustion chamber produced directly gets into vertical tobacco pipe through the tobacco pipe mouth, then arrange outward, compared with the prior art, do not need horizontal tobacco pipe, just also avoided horizontal tobacco pipe to be blockked up by cigarette ash, also do not need to clear up horizontal tobacco pipe, the flue exempts from to clear up in the stove, the use of heating stove has been made things convenient for, also avoided blockking up the flue because forget the clearance, cause the unable normal use of stove problem, consumer uses more province heart, the after-sale cost of producer has still been reduced.

Drawings

Fig. 1 is a schematic sectional structural view of the biomass particle heating furnace of the utility model;

FIG. 2 is a schematic sectional view of the FIG. 1 with the sear door and the ash removal door opened;

FIG. 3 is a schematic perspective view of FIG. 2;

fig. 4 is a schematic perspective view of the biomass particle heating furnace of the present invention with parts removed;

FIG. 5 is a schematic view of the combustion liner with one side removed;

FIG. 6 is a perspective view of the assembled structure of the combustion liner and the ash box;

FIG. 7 is a perspective view of the ash box;

FIG. 8 is a schematic sectional view of the charging device;

FIG. 9 is a schematic perspective view of the assembly of the right side plate and the vertical smoke tube;

in the figure: 1-a storage bin; 2-a feeding device; 21-a feeding motor; 22-a spiral conveying shaft; 23-a delivery pipe; 24-a blanking pipe; 25-a feed port; 3-a combustion chamber; 31-upper side plate; 32-right side plate; 33-rear side plate; 4-combustion liner; 41-a combustion box; 42-mounting holes; 43-a first gas panel; 44-a second gas panel; 45-ignition port; 46-a rotating grate; 47-fixed grate; 48-a slag discharge port; 49-step motor; 6-an ignition rod; 7-vertical smoke tube; 71-smoke pipe mouth; 8-a smoke discharge settling chamber; 9-smoke exhaust fan; 10-hot air outlet; 11-a heat exchange fan; 12-a fire detection furnace door; 13-deashing the furnace door; 14-ash pan; 141-a handle; 15-a coke slag box; 16-a support plate; 17-inserting pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Defining: the side toward which the hot air outlet 10 of the heating furnace faces is the front side, the side opposite to the front side is the rear side, and the rest are the upper side, the lower side, the left side and the right side.

As shown in fig. 1, 2, 3 and 4 together, a biomass pellet heating furnace comprises: the device comprises a storage bin 1, a feeding device 2, a combustion chamber 3, a combustion liner 4, an air inlet device and a smoke exhaust device.

Biomass particles in the storage bin 1 are fed into the combustion liner 4 through the feeding device 2, an air inlet device and an ignition rod 6 are arranged on the rear side of the combustion liner 4, the ignition rod 6 extends into the combustion liner 4, the air inlet device comprises an air inlet box communicated with the combustion liner 4 and an air inlet pipe communicated with the air inlet box, air sequentially passes through the air inlet pipe and the air inlet box to enter the combustion liner 4, the biomass particles are ignited through the ignition rod 6, and generated smoke is discharged out through the smoke exhaust device.

The combustion chamber 3 is defined by an upper side plate 31, a left side plate, a right side plate 32, a rear side plate 33, a fire detection furnace door 12 and an ash box 14. The outer side of the combustion chamber 3 is provided with a heat exchange chamber corresponding to the upper side plate 31, the left side plate, the right side plate 32 and the rear side plate 33, the heat exchange chamber comprises an upper side heat exchange area, a left side heat exchange area, a right side heat exchange area and a rear side heat exchange area, the upper side heat exchange area is provided with a hot air outlet 10, a cold air inlet is provided with a heat exchange fan 11, the heat exchange fan 11 is started, cold air enters the heat exchange chamber, the side plate of the combustion chamber 3 and the vertical smoke tube 7 dissipate heat to heat the air in the heat exchange chamber, and the hot air is blown out of the hot air outlet 10.

As shown in fig. 6 and 7, the ash box includes an ash box 14 and a cinder box 15 which are integrally arranged, the ash box 14 is U-shaped, a handle 141 is fixed on the ash box 14, the cinder box 15 is located in the U-shaped opening of the ash box 14, a support plate 16 is fixed on the inner surface of the cinder box 15 in the circumferential direction, the support plate 16 is in contact with the lower end of the combustion box 41, and a sealing rope is arranged along the connecting angle between the support plate 16 and the sidewall of the cinder box 15, so that the combustion box 41 is in sealing connection with the cinder box 15 to restrain air. When the biomass particles are combusted, the soot in the combustion chamber 3 is settled into the soot box 14, and the generated coke breeze falls into the coke breeze box 15 from the lower end opening of the combustion box 41. The front side of the ash box is provided with an ash cleaning furnace door 13, and the ash cleaning furnace door 13 is positioned below the fire detecting furnace door 12.

This application divide into the furnace gate two, be deashing furnace gate 13 and spy fire furnace gate 12 respectively, during the deashing, only need open deashing furnace gate 13, take out ash box 14, can pour cigarette ash and burnt sediment, and the deashing is convenient, and need not flame out.

As shown in fig. 8, the feeding device 2 includes a feeding motor 21, a screw conveyor and a discharging pipe 24, the screw conveyor includes a screw conveying shaft 22 and a conveying pipe 23 sleeved outside the screw conveying shaft 22, the screw conveying shaft 22 is driven by the feeding motor 21, a feeding port 25 is arranged on the upper side of the conveying pipe 23, a discharging port of the conveying pipe 23 is connected with a feeding end of the discharging pipe 24, the lower end of the discharging pipe 24 is inserted into the insertion pipe 17, the insertion pipe 17 is fixedly arranged, an included angle between the discharging pipe 24 and the screw conveying shaft 21 is α and is an obtuse angle, the discharging pipe 24 is arranged in a downward inclination manner, wherein 160 degrees is equal to or more than α degrees, preferably, α is equal to 140 degrees, at which not only material jamming can be prevented, but also biomass particles can smoothly slide down from the discharging pipe 24 by self gravity.

During blanking, biomass particles in the bin 1 enter the screw conveyor through the feeding hole 25, are conveyed to the blanking pipe 24 through the screw conveying shaft 22, and then fall onto the rotary grate 46 of the combustion liner 4 through the insertion pipe 17.

The combustion chamber 4 is located in the combustion chamber 3, as shown in fig. 5 and 6, the combustion chamber 4 includes a combustion box 41 having openings at upper and lower ends, the flame is ejected from the upper end opening, the ash or the char is discharged from the lower end opening, and the combustion box 41 has a rectangular shape, a circular shape, an oval shape, or the like. One side wall of the combustion box 41 is provided with an air inlet and a mounting hole 42 for an ignition device to pass through, the air passes through the mounting hole 42 to supply air to the combustion box 41, and the ignition rod 6 passes through the mounting hole 42 and then passes through the ignition port 45 to ignite the biomass particle fuel. Ignition port 45 is located on first gas distribution plate 43, first gas distribution plate 43 is fixed in a lateral wall that burning box 41 was equipped with mounting hole 42, burning box 41 is fixed with second gas distribution plate 44 with a lateral wall that mounting hole 42 is relative, first gas distribution plate 43, second gas distribution plate 44 all locate in burning box 41 and respectively with the lateral wall interval setting of burning box 41, a plurality of inlet ports have been arranged respectively on first gas distribution plate 43, the second gas distribution plate 44, the air that comes from the air-supply line not only can upwards flow from the bottom of burning box 41, can also flow from the inlet port, made things convenient for the air to participate in the burning, the burning of biomass granule is abundant.

The combustion box 41 is internally provided with a rotary grate 46 and a fixed grate 47 positioned below the rotary grate 46, the rotary grate 46 and the combustion box 41 are rotatably installed, the fixed grate 47 and the combustion box 41 are fixedly connected, two ends of the rotary grate 46 are respectively and fixedly provided with a rotating support part, such as a rotating support plate or a rotating support shaft, two opposite side walls of the combustion box 41 are respectively provided with a rotating support hole, the two rotating support parts are respectively and rotatably installed in the two rotating support holes, the fixed grate 47 is fixedly connected with the lower end of the first air distribution plate 43, and a slag discharge hole 48 is reserved between one end of the fixed grate 47, which is far away from the rotary grate 46, and the combustion box 41 along the rotating direction of the rotary grate 46.

The second gas distribution plate 44 is positioned above the fixed grate 47 to facilitate the discharge of the coke breeze. When the rotary grate 46 is horizontal, the air inlet holes and the ignition hole 45 are both positioned above the rotary grate 46.

The rotary grate 46 is driven by a stepper motor 49 to precisely control the direction of rotation, the time of rotation and the angle of rotation of the rotary grate 46, with the rotary grate 46 being oriented 180 ° each time. One rotation supporting part is connected with an output shaft of the stepping motor 49 through a universal coupling, for example, a universal coupling of a cross shaft is used for connecting, so that the arrangement of parts of the heating furnace is convenient. The stepper motor 49 may also be connected to the rotary grate 46 via a gear mechanism, chain drive or belt drive, which are not shown in detail.

The working principle and the working process of the combustion liner 4 are as follows:

the biomass particle fuel falls on the rotary grate 46 and is ignited by the ignition rod 6, air enters the combustion box 41 from the lower part and the air inlet hole to participate in combustion, and generated flame is sprayed out from the upper end opening of the combustion box 41;

when the set time is reached, the stepping motor 49 drives the rotary grate 46 to rotate 180 degrees directionally through the universal joint (the arrow shown in fig. 5 represents the rotation direction of the rotary grate 46, and the dotted line in fig. 2 and 3 represents the position of the rotary grate 46 after rotating a certain angle), the coke residue on the rotary grate 46 is completely turned over to the fixed grate 47, and meanwhile, the biomass particles which are being combusted on the rotary grate 46 are also turned over to the fixed grate 47 and continue to be combusted on the fixed grate 47;

the rotary grate 46 rotates 180 degrees again, at the moment, the rotary grate 46 is horizontal, biomass particles from the bin fall onto the rotary grate 46, and the biomass particles on the rotary grate 46 are ignited by flame generated by the burning biomass particles on the fixed grate 47;

the rotary grate 46 rotates 180 degrees again, the coke residue on the rotary grate 46 and the biomass particles which are being combusted are completely overturned onto the fixed grate 47, meanwhile, the rotary grate 46 pushes the coke residue on the fixed grate 47 out of the slag discharge opening 7, and new biomass particles fall onto the rotary grate 46.

The utility model discloses a burning courage has following advantage:

(1) when coke is cleaned, the fire cannot be extinguished, the heating effect is continuous and stable, the stepping motor 49 is controlled by the control system to drive the rotary grate 46 to clean coke on time, and the use of the heating furnace is facilitated;

(2) the coke cleaning is thorough, the air inlet is smooth, and various problems such as black smoke, blockage of an ignition port and the like caused by coke slag can be avoided;

(3) the rotary grate and the fixed grate have the function of biomass particle combustion at the same time, so that the combustion is facilitated and is more sufficient;

(4) the safety is good, biomass particles cannot overflow from the combustion box due to coking, the biomass particles cannot be continuously combusted when the machine is stopped, flame cannot be introduced into the storage bin 1, potential safety hazards do not exist, and safety accidents cannot be caused;

(5) the material is not selected, various biomass particles can be used, and the use cost is low.

The smoke exhaust device comprises a vertical smoke pipe 7, a smoke exhaust settling chamber 8 and a smoke exhaust fan 9, wherein the vertical smoke pipe 7 is positioned in the left heat exchange area and the right heat exchange area, one side of the upper end of the vertical smoke pipe 7, which faces the combustion chamber 3, is provided with a smoke pipe smoke hole 71, as shown in fig. 9, the corresponding positions of the left side plate and the right side plate 32 and the smoke pipe smoke hole 71 are bent outwards to form a bent part, the bent part is provided with a side plate smoke hole corresponding to the smoke pipe smoke hole, the bent part is hermetically connected with the vertical smoke pipe 7, the smoke exhaust settling chamber 8 is communicated with the lower end of the vertical smoke pipe 7, the smoke exhaust fan 9 is communicated with the smoke exhaust settling chamber 8, and when the smoke exhaust fan 9 works to generate negative pressure, smoke in the combustion chamber 3 is discharged outwards along the smoke pipe smoke hole 71, the vertical smoke pipe 7.

Compared with the prior art, the flue gas directly gets into vertical tobacco pipe 7 through tobacco pipe mouth 71, the flue gas need not get into vertical tobacco pipe 7 through horizontal tobacco pipe, just also need not clear up horizontal tobacco pipe, there is not cigarette ash to block up horizontal tobacco pipe, accomplish the interior flue of stove and exempt from the clearance, the use of heating stove has been made things convenient for, also avoided blockking up the flue because forget the clearance, cause the unable normal use of stove problem, the consumer uses more to save worry, the after sale cost of producer has still been reduced.

The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.

Claims (10)

1. Biomass particle heating furnace, comprising: the device comprises a combustion chamber, a combustion liner positioned in the combustion chamber, and a feeding device for conveying materials in a storage bin to the combustion liner;

the boiler is characterized in that the combustion liner comprises a combustion box with an opening at the upper end, a fire grate is arranged in the combustion box and comprises a rotary fire grate and a fixed fire grate, the rotary fire grate is positioned above the fixed fire grate, the rotary fire grate and the combustion box are rotatably arranged, the fixed fire grate is fixed with the combustion box, and a slag discharge port is reserved between the fixed fire grate and the combustion box and used for discharging coke slag on the fixed fire grate through the rotation of the rotary fire grate.

2. The biomass particle heating furnace as claimed in claim 1, wherein the two ends of the rotary grate are respectively and fixedly provided with a rotary support part, the two opposite side walls of the combustion box are respectively provided with a rotary support hole, and the two rotary support parts are respectively and rotatably installed in the two rotary support holes.

3. The biomass pellet heating furnace of claim 2, wherein one of said pivoting supports is connected to a power means.

4. The biomass pellet heating furnace of claim 1, wherein the bottom end of the combustion box is supported on an ash box, the ash box including a ash box and a char box, the ash box being U-shaped, the char box being located within the opening of the U-shape.

5. The biomass pellet heating furnace of claim 4, wherein a support plate is circumferentially fixed to an inner surface of the coke breeze box, and the combustion box is supported on the support plate.

6. The biomass particle heating furnace as claimed in claim 5, wherein the front side of the heating furnace is provided with a furnace door; the furnace gate includes visit fire furnace gate and deashing furnace gate, visit fire furnace gate is located the front side of combustion chamber, the deashing furnace gate is located the front side of ash box.

7. The biomass particle heating furnace as claimed in claim 1, wherein the feeding device comprises a feeding motor, a screw conveyor and a discharging pipe, the screw conveyor comprises a screw conveying shaft and a conveying pipe sleeved outside the screw conveying shaft, the screw conveying shaft is driven by the feeding motor, a feeding hole is formed in the upper side of the conveying pipe, a discharging hole of the conveying pipe is connected with a feeding end of the discharging pipe, an included angle between the discharging pipe and the screw conveying shaft is an obtuse angle, and the discharging pipe is arranged in a downward inclined mode.

8. A biomass pellet heating stove as claimed in claim 7, characterised in that the obtuse angle ranges are: 120-160 degrees.

9. The biomass pellet heating furnace of claim 8, wherein the transfer pipe and the screw transfer shaft are horizontally disposed.

10. The biomass pellet heating furnace of claim 1, wherein the combustion chamber is connected to a smoke evacuation device;

the left side of the combustion chamber is provided with a left side plate, the right side of the combustion chamber is provided with a right side plate, the outer side of the combustion chamber is provided with a heat exchange chamber, the heat exchange chamber is provided with a cold air inlet and a hot air outlet, and the heat exchange chamber comprises an upper heat exchange area, a left heat exchange area, a right heat exchange area and a rear heat exchange area which are communicated;

the smoke exhaust device comprises a vertical smoke pipe, a smoke exhaust settling chamber and a smoke exhaust fan, the vertical smoke pipe is arranged in the left heat exchange area and the right heat exchange area respectively, an opening at one side, facing the combustion chamber, of the upper end of the vertical smoke pipe forms a smoke pipe smoke hole, the corresponding positions of the left side plate and the right side plate and the smoke pipe smoke hole are bent outwards to form a bent portion, the bent portion is provided with a side plate smoke hole corresponding to the smoke pipe smoke hole, and the bent portion is connected with the vertical smoke pipe in a sealing mode.

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