CN204593362U - A kind of biomass particle burning machine - Google Patents

Abstract

A kind of biomass particle burning machine, it is a kind of industrial equipment, biomass particle burning machine comprises the through each other cinder chamber being positioned at bottom from bottom to top, is positioned at the combustion chamber at middle part and superposed flame chamber, the circumferential periphery of described combustion chamber is provided with and can carries out pre-heat utilization and heat insulation air channel, and is provided with cinder chamber, automatic charging part, wind cyclic part and automatic discharge part.And describe the using method of this equipment.The utility model has carried out original design to ducting system, and heat energy utilization is high, and compared with the boiler of equal calorific value, global optimization is better, and volume is little, and consume energy low, heat waste is low.

Description

A biomass pellet burner

technical field

The proposal relates to a combustion device that uses biomass as fuel to generate heat energy, specifically a biomass particle burner.

Background technique

Biomass pellet fuels are mostly rice husks, peanut husks, corncobs, camellia husks, cottonseed husks, and "three leftovers" that are processed by pellet molding machines into block, rod, or granular fuel particles. In addition, wood chips made of wood chips Biomass pellet fuel is also more common.

Biomass has a series of advantages, and it is being gradually promoted in a modern society where environmental protection is becoming more and more stringent. Among them, the burnup of biomass pellet fuel is carried out in furnaces or combustion equipment, which is also the research direction of various biomass pellet manufacturing units and research institutes.

In view of this characteristic, a kind of biomass pellet burner disclosed in Chinese patent document application number: 201310481448.5 only provides the feeding method of screw feed, and there are still many combustion equipment with this structure in the process of actual use. For example, the furnace of the screw feeding cylinder is directly connected. When an open flame is generated in the furnace, the high temperature will carbonize the biomass pellet fuel in the spiral feeding cylinder in advance, resulting in black smoke. Before the fuel enters the furnace, it is necessary to prevent a series of problems caused by its carbonization.

Another example is a biomass particle combustion device disclosed in 201110247069.0, which adopts a top-down feeding method for feeding. In the actual feeding process, due to the high pressure generated during the furnace combustion process, there is a Certain difficulty. At the same time, the ash outlet is located on the side of the bottom, which is easy to block and difficult to remove, and the frequency of cleaning is obviously too high. Moreover, the heat preservation effect of the equipment is not good, and the heat dissipation of the furnace causes energy loss.

The current biomass burner also has the following problems:

The degree of automation is low. Although the automatic feeding and air volume control are basically realized, the automatic slag discharge function is basically absent.

The effect of air supply and supplementary air is poor, resulting in insufficient combustion.

The distribution of biomass pellet fuel in the furnace is not uniform enough, resulting in insufficient combustion.

The thermal insulation effect of the combustion furnace is poor, and when it is filled with rock wool, it needs to be replaced frequently.

The sealing effect of the furnace is poor, and air leakage and smoke leakage often occur.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a biomass particle burner. Firstly, the performance of the equipment is optimized as a whole, so that it has the functions of automatic feeding, automatic slag discharge and adjustable air volume, and secondly, it has the functions of waste heat utilization performance.

The technical scheme that the utility model solves its technical problem adopts is:

A biomass pellet burner, characterized in that it includes

A furnace part, the furnace part includes a lower ash chamber, a middle combustion chamber and an upper flame chamber that communicate with each other from bottom to top, wherein,

The periphery of the combustion chamber is provided with a first air channel and a fifth air channel, and a fire grate that can operate in a horizontal state is set in the combustion chamber, and the fire grate is composed of several metal hinges Chain-shaped, and the grate is rotatable driven by the first drive motor, and the air outlet of the fifth air duct is facing and directly supplies air to the fuel combustion point in the combustion chamber;

A second air channel and a third air channel independent of each other are sequentially arranged on the periphery of the flame chamber from the inside to the outside, and the air outlet of the second air channel supplies air to the flame chamber from the top, and one of the flame chambers A flame nozzle and an air supply ring located on the periphery of the flame nozzle are opened on the side wall, and a coaxial diversion port is provided on the other side wall of the flame chamber opposite the flame nozzle, and the diversion port is connected with the The second air passage is connected, and the air supply ring is connected with the third air passage;

The ash chamber is filled with clear water, and an automatic water replenisher is provided outside the ash chamber;

The automatic feeding part, the automatic feeding part includes a silo, a screw conveyor, an air lock and a discharge pipe, the silo is located above the side of the burner, the discharge pipe is set obliquely and the discharge port is located In the combustion chamber, an igniter is installed on the inner wall of the combustion chamber near the discharge port, and an air lock is connected to the upper port of the discharge port, and an air lock is installed between the air lock and the outlet of the silo. A screw conveyor; and the air locker is located in the fourth air channel, and the air outlet of the fourth air channel is connected to the combustion chamber;

A wind circulation part, the wind circulation part includes a high-pressure blower and several dampers, the air inlet of the high-pressure blower is connected to the air outlet of the first air passage, and the air inlet of the first air passage is open; The air outlets of the high-pressure fans are respectively connected to the second, third, fourth and fifth air ducts through respective branch pipes, and air dampers are respectively set in each air duct;

The automatic slag discharge part includes a scraper that directly acts on the bottom of the ash chamber, and the scraper is installed on a chain that can run and is driven by a second motor to scrape out the mortar in the ash chamber and discharge it to the outside .

An arc-shaped fire baffle is arranged in the combined inner cavity between the flame chamber and the combustion chamber.

A gate is set at the discharge port of the silo.

An inspection cover plate connected by threads is fixed on the outside of the diversion port, and the flame nozzle can be dredged in the state of being removed. Regularly clean the slagging inside the burner.

On the side wall of the flame chamber, there is an observation window arranged obliquely downward for observing the internal flame condition.

The grate is a crawler structure, including blades, chains and sprockets, and the blades are hinged on the chains to form a high temperature resistant moving part.

How to use this burner:

Follow the steps in turn:

Step 1, prepare materials: biomass particles, between Φ8 ~ Φ12, length between 30mm ~ 70mm, compressed density: 1.1kg/dm ³ ~ 1.4kg/dm ³ , dry and impurity-free particles;

Step 2, filling the silo with materials for use;

Step 3, ignition; first open the gate under the silo, then start the screw conveyor motor and air lock motor, after the screw conveyor and air lock run at full speed for 2 minutes, start the high-pressure fan, which runs at 25 Hz, and then Start the igniter, and when you see thick smoke coming out of the flame nozzle, adjust the speed of the fan to 40 Hz to 50 Hz, and start the grate motor to run at 25 Hz, and wait until the tongue of flame is ejected from the flame nozzle. ignition;

Step 4 operation, adjust the grate speed and feeding speed according to different materials, which should ensure uninterrupted combustion;

Step five, to stop burning, firstly close the gate below the silo, send the material inside the screw conveyor into the discharge pipe and then close it, and then close the air locker. Turn off the high-pressure blower and the grate motor until the flame cannot be seen from the observation hole, and finally turn off the main power supply.

Step 6, cooling, the complete cooling time of the burner is about 6-12 hours.

The working process of the burner: the silo is filled with granular materials, and the materials are sent to the bulk material device by the screw feeder. The igniter at the bottom of the row ignites the material. Under the action of the strong wind of the high-pressure fan, the hot air is supplied to the combustion chamber through the fifth air channel and the fourth air channel. The material burns violently in the combustion chamber, and the material is continuously added at the same time. The grate moves slowly, and with the increase of the combustion area, the temperature in the combustion chamber rises rapidly, and the tongue of flame burns longer and longer, and is sprayed out through the flame nozzle. The effect of air flow, the wind flow from the air supply ring on the outer ring of the crater is the oxygen supply flow to the flame tongue, so that the flame tongue can be fully burned after being ejected, and the heat on the periphery of the furnace body (collected through the first, second and third channels) The incoming heat) is blown into thermal energy conversion equipment (such as boilers, hot air drying furnaces, etc.). The burnt material in the combustion chamber moves backward slowly, the temperature gradually decreases, and finally falls into the slag discharge tank below the burner, and the scraper at the bottom of the slag discharge tank discharges the slag (mud). The whole process runs continuously, and according to the user's material and demand for heat, the best combustion can be achieved by adjusting the speed of grate movement and material feeding.

The beneficial effects of the utility model are:

1. The mode of automatic feeding, discharging and air volume control is adopted, which breaks the limitation that biomass burners can only use wood pellets in the past, and is oriented to the utilization of all biomass pellets.

2. Automatic combustion, from feeding to burning to slagging, the whole process is fully automated, wherein the feeding and slagging process can be continuous or intermittent, and according to different biomass particles , to develop the best parameters, fully automatic control can be realized.

3. Unique water seal. The slag discharge chamber is filled with water to form a water seal. The water seal not only ensures that the air flow of the fan is not leaked, but also, under the action of high-temperature slag, the water is partially vaporized, and the steam rises to make the water vapor participate in the process. The pyrolysis and combustion of particles is prevented, and the heat energy utilization of particles is higher. The automatic water replenisher provided at the same time can keep the water in the slag discharge chamber at a certain liquid level.

4. Due to the unique design of the air duct system, the heat energy utilization is high. Compared with the boiler with the same calorific value, the overall optimization is better, the volume is small, the energy consumption is low, and the heat loss is low.

5. Low-carbon and smoke-free emissions. The conversion process of biomass energy is to synthesize biomass from carbon dioxide and water through the photosynthesis of green plants. The combustion of biomass releases carbon dioxide and water to form a cycle of carbon dioxide emission, which can effectively reduce human carbon dioxide. net emissions and reduce the greenhouse effect.

6. Environmental protection and dust-free, at the same time, the scraped by the automatic slag discharge scraper is plaster, there will be no dust phenomenon, and it can be directly used as fertilizer.

Description of drawings

Figure 1 is one of the perspective views of the burner.

Figure 2 is the front view of the burner.

Figure 3 is a side view of the burner.

Fig. 4 is a sectional view A--A in Fig. 3 .

Fig. 5 is a cross-sectional view of B--B in Fig. 2 .

Fig. 6 is a schematic diagram of the connection relationship between the air duct and the fan.

Figure 7 is a schematic diagram of the combustion process.

Fig. 8 is the second perspective view of the burner.

In the figure: 1 combustion chamber, 2 flame chamber, 21 partition, 22 burner nozzle, 23 gas supply ring, 24 diversion port, 3 ash chamber, 31 clean water, 4 high-pressure fan, 51 first air duct, 511 inlet Tuyere, 52 second air duct, 53 third air duct, 54 fourth air duct, 55 fifth air duct, 56 damper, 61 blade, 62 chain, 63 sprocket, 64 first drive motor, 71 silo, 72 screw conveyor, 73 air locker, 74 drop pipe, 82 second motor, 81 chain, 83 scraper, 91 igniter, 92 fire baffle, 93 inspection cover, 94 observation window.

Detailed ways

Compared with traditional coal and other fuels, biomass pellet fuel has the following characteristics:

1. The calorific value is large, the calorific value is about 3900-4800 kcal/kg, and the calorific value after carbonization is as high as 7000-8000 kcal/kg.

2. Biomass pellet fuel has high purity and does not contain other sundries that do not generate heat. Its carbon content is 75-85%, ash content is 3-6%, water content is 1-3%, and absolutely does not contain coal gangue, stones, etc. Impurities that do not generate heat but consume heat will directly reduce costs for enterprises.

3. Biomass pellet fuel does not contain sulfur and phosphorus, does not corrode the boiler, can prolong the service life of the boiler, and the enterprise will benefit a lot.

4. Since biomass pellet fuel does not contain sulfur and phosphorus, it does not produce sulfur dioxide and phosphorus pentoxide during combustion, so it will not cause acid rain, pollute the atmosphere, and do not pollute the environment.

5. Biomass pellet fuel is clean and hygienic, easy to feed, reduces labor intensity of workers, greatly improves the working environment, and enterprises will reduce the cost of labor.

6. After the biomass pellet fuel is burned, there is very little ash, which greatly reduces the site for piling up coal ash and reduces the cost of ash.

7. The ashes of biomass pellet fuel combustion are high-grade high-quality organic potassium fertilizers, which can be recycled for profit.

As shown in Figures 1 to 8, this burner is a biomass pellet burner for the above-mentioned biomass pellet fuel, which consists of the following parts.

The furnace part, the furnace part includes the lower ash chamber, the middle combustion chamber and the upper flame chamber, which are connected to each other from bottom to top, wherein the combustion chamber is the main place for the combustion of particulate fuel, and the flame chamber is where the flame is concentrated to the target The functional part of the flame injection, the ash chamber is the part used to collect the ash and remove it. Due to the high temperature of the combustion chamber and the flame chamber, the inner tank is generally made of refractory material, and the outer circumference is covered with a metal shell.

Specifically, the combustion chamber 1 is in the shape of a cuboid as a whole, and the internal cavity is used for combustion. A first air passage 51 and a fifth air passage 55 are arranged around the periphery of the combustion chamber, wherein the first air passage 51 is located in the middle and upper part. The liner close to the combustion chamber can collect the heat emitted by the combustion chamber. There is an air inlet and an air outlet in the first air channel 51, the 511 air inlet is directly connected with the atmosphere, usually in an open state, the air outlet is connected with the high-pressure fan 4, and the airflow in the first air channel is driven by the high-pressure fan blast, so that When the outside air passes through the first air channel, it will be heated due to the heat exchange effect with the combustion chamber to realize the preheating effect of the air. The air curtain prevents the temperature of the shell from rising. This structural design has a more energy-saving effect than the traditional heat-insulating rock wool furnace design. The hot air extracted by the high-pressure fan is sent to the combustion chamber, flame chamber and other places after reasonable distribution.

A horizontal fire grate is set in the combustion chamber 1, the fire grate includes a crawler structure, including blades 61, chains 62 and sprockets 63, and the blades 61 are hinged on the chains to form a high temperature resistant motion components, and the grate is rotatable under the drive of the first drive motor 64, and slowly rotates from front to back, wherein the first drive motor is a speed-regulating motor, and the speed is adjustable. Arrange and burn, move backwards as the combustion progresses, form plant ash after complete combustion, and then fall down when the grate runs to the rear end, completing a cycle, and the part with the largest flame is basically in the combustion chamber 1 At the center of the flame, the flame follows the trend and concentrates towards the flame chamber. The fifth air passage 55 is located on the side wall of the combustion chamber corresponding to the fire grate, and is provided with one or more air supply ports to directly supply air to the combustion chamber, so that the hot air is sent to the lower side of the fire grate and passes through the fire grate. During this process, the fuel on it is combusted to maximize the efficiency of combustion. In this process, an air damper 56 can be set on the pipeline between the fifth air duct 55 and the high-pressure fan to adjust and control the air supply volume.

The flame chamber 2 is the place where the flames are concentrated and delivered to the target. The inner tank of the flame chamber 2 is made of refractory material, and the outer side of the flame chamber is covered with two layers of shells, so that the surrounding periphery of the flame chamber is sequentially arranged with mutually independent The second air duct 52 and the third air duct 53, wherein the air inlet of the second air duct 52 is located at the bottom of the flame chamber, and the air outlet of the second air duct supplies wind from the top to the flame chamber, and The spiral dividing plate 21 is set in the second air duct, so that when the hot air passes through the second air duct, the heat emitted by the flame chamber can be collected to the greatest extent, and the hot air flowing in the second air duct 52 absorbs a large amount of heat, and A top-down injection into the flame chamber causing the flame to change direction. Moreover, a flame nozzle 22 and an air supply ring 23 positioned at the periphery of the flame nozzle are provided on the side wall of the flame chamber. The flame nozzle and the gas supply ring are all made of refractory materials, and the flame nozzle 22 is The main port where the flame sprays out, under the action of the top hot air, the flame will spray to the outside of the flame nozzle 22 with low air pressure. Simultaneously, on the other side wall of the flame chamber opposite to the flame nozzle, a coaxially arranged diversion port 24 is set, and the diversion port 24 communicates with the second air duct. It is easy to understand that the second air duct 52 The hot air will be injected into the combustion chamber through the diversion port, and because the diversion port 24 and the injection nozzle 22 are coaxially arranged, it will blow and pull the flame in the axial direction and quickly spray along the flame nozzle, improving the rigidity and strength of the flame . In addition, the third air passage 53 is located at the periphery of the second air passage, and hot blast is provided by the high-pressure blower 4, wherein, the air outlet of the third air passage 53 supplies air to the air supply ring, and the hot blast coming out of the air supply ring has a direct impact on the injection nozzles. The flame that comes out supports combustion and adjusts the shape of the flame so that the flame can burn fully. Of course, the third channel can effectively collect the heat dissipated in the second air channel, so it can generally be considered that the temperature on the outer shell of the flame chamber will not be very high.

The ash chamber 3 is located at the bottom of the equipment, and is usually installed below the foundation. The ash chamber is filled with clear water 31 to form a water seal with the shell, and an automatic water replenisher is provided outside the ash chamber, such as a commonly used The advanced float type liquid level water replenisher keeps the liquid level at a certain height all the time. The water in the ash chamber has three functions, one is water seal, which realizes the isolation and sealing of the combustion chamber from the outside world, and the other is to collect plant ash, and the ash on the grate falls directly into the water to form plaster. It is easy to clean and prevent the formation of dust, and realize clean production. Third, because the ash on the grate has a certain temperature, when it falls into the water, part of the water is vaporized, and the vaporized water vapor rises to the combustion chamber. Add water in the middle, form a water replenishment mechanism, and improve fuel utilization.

The automatic feeding part, the automatic feeding part includes a feed bin 71, a screw conveyor 72, an air lock 73 and a discharge pipe 74, the feed bin is located above the side of the burner, and is a square funnel, and the discharge pipe 74 is arranged obliquely and falls The feed port is located in the combustion chamber, and the discharge point is located in the center of the combustion chamber. An igniter 91 is installed on the inner wall of the combustion chamber 1 near the discharge port for initial ignition. An air locker 73 is connected to the upper port of the blanking port to prevent the flame from flowing backwards and cause danger. A screw conveyor is installed between the air locker and the outlet of the silo for directional and quantitative delivery of materials; among them, the air locker 73 Located in the fourth air duct, the air inlet of the fourth air duct 54 is connected to the high-pressure blower 4 through a branch pipe, and the air outlet of the fourth air duct 54 is connected to the combustion chamber. and the feeding tube 74 for cooling, so that the temperature of the feeding tube is not too high, preventing the carbonization of the fuel particles in the process, and solving the problem of carbonization of the fuel particles in the feeding process of the traditional combustion furnace feeder. A gate 75 is provided at the discharge port of the silo 71, and the setting of the gate is used to control the fuel supply during startup and shutdown, which will be described in detail during use.

The wind circulation part, the wind circulation part includes a high-pressure fan 4 and several dampers 56, the air inlet of the high-pressure fan is connected to the air outlet of the first air duct, and the air inlet of the first air duct 51 is open , the first air channel collects the heat between the combustion chamber and the shell, and the damper is set differently. The air outlets of the high-pressure fans are respectively connected to the second, third, fourth and fifth air passages through their respective branch pipes, and the air gates 56 are respectively set, because the air supply volume at the combustion chamber, the flame chamber and the air supply ring The air ratio and ratio need to be partially adjusted according to different fuel properties, so this damper is needed, and the air volume and air supply ratio can be adjusted by adjusting the opening size of the damper.

The automatic slag discharge part includes a second motor 82, a chain 81 and a scraper 83. The chain part is located in the ash chamber and the plaster in the ash chamber 3 is scraped out and discharged by the scraper arranged on the chain , wherein the scraper 84 acts directly on the bottom of the slag discharge chamber to scrape away the plaster and discharge it outside.

An arc-shaped fire baffle 92 is arranged in the combined inner cavity between the flame chamber and the combustion chamber to stabilize the flame and prevent excessive upward momentum of the flame.

Since the flame nozzle often accumulates dust and carbon deposits, it needs to be cleaned regularly. A maintenance cover 93 connected by threads is fixed on the outside of the diversion port. When it is removed, the flame nozzle can be dredged. Clean up the slagging in the flame vent, and cover the lid after cleaning.

Some inspection ports are provided on the wall of the furnace for later maintenance.

On the side wall of the flame chamber, there is an observation window 94 arranged obliquely downward for observing the internal flame condition, so as to control the air volume control and the fire grate rotating speed.

Step 1, prepare materials: biomass particles, between Φ8-Φ12, length between 30-70mm, compressed density: 1.1-1.4kg/dm3, dry particles without any impurities; where, the density unit is a composite unit , it is a combination of mass units and volume units, so when converting density units, you must know the conversion relationship between mass units and volume units: 1g=10 ^-3 kg, 1cm ³ =10 ⁻³ dm ³ =10 ⁻⁶ m ³ .

Step 2, use the bucket elevator to send the material into the bin 71, use the feeder in the bin to automatically control the operation of the bucket elevator, and fill the bin with the material;

Step 3, ignition; first open the gate 75 below the silo, then start the screw conveyor motor and the air locker motor, and after the feeder and the air locker run at full speed for 2 minutes, start the fan, and the high-pressure fan runs at a frequency of 25 Hz. Then start the igniter 91, and when it is seen that thick smoke is coming out of the crater (about 5 minutes), adjust the fan speed to 40-50 Hz, and start the grate motor, and run at 25 Hz until the tongue of flame is sprayed from the crater. After exiting, the ignition is completed,

Step four operation, adjust the grate speed and feeding speed according to different materials, which should ensure uninterrupted combustion,

Different materials have different strategies for adjusting the speed. For granular materials with high calorific value (such as wood pellets, palm pellets), because of their high calorific value and long-lasting combustion, the grate motor (the first drive motor) is not easy to adjust. Otherwise, the material will be discharged without burning out. For the change of calorific value demand, the feeding amount should be adjusted to increase the released heat, and the combustion status of the material and the condition of the stucco should be observed from the observation port at any time. Generally, violent combustion It is advisable for the material to occupy 2/3 of the combustion chamber. For granular materials with low calorific value (such as straw, rice husk, and cotton wood particles), it is necessary to increase the grate speed and increase the feeding volume to make up for its low calorific value. Therefore, the consumption of materials with low calorific value is relatively high. Users can adjust the calorific value released according to their own needs.

Step five, stop burning

Firstly, the gate 75 below the feed bin is closed, and then closed after the material in the screw conveyor is emptied, and then the air locker 73 is closed. Until the flame cannot be seen from the observation hole, the high-pressure fan and the second motor of the fire grate are turned off, and finally the main power supply is turned off.

Step 6, cooling, the complete cooling time of the burner is about 6-12 hours.

The above-mentioned embodiments are only descriptions of preferred implementations of the present utility model, and are not intended to limit the scope of the present utility model. Variations and improvements should be extended within the scope of protection as defined in the claims of the utility model.

Claims (6)

1. a biomass particle burning machine, is characterized in that, comprises

Burner hearth part, described hearth portion is divided and is comprised the through each other cinder chamber being positioned at bottom from bottom to top, be positioned at the combustion chamber at middle part and superposed flame chamber, wherein,

The circumferential periphery of described combustion chamber is provided with the first air channel and five-duct, and arrange in described combustion chamber one can level running fire grate, the chain that the hinge that described fire grate is connected by some metal hinge forms, and described fire grate is rotatable under the driving of the first drive motors, the air outlet of described five-duct faces and directly to the fuel combustion point air feed in combustion chamber;

The circumferential periphery of described flame chamber sets gradually the second air channel independent of each other and the 3rd air channel from inside to outside, and the air outlet in described second air channel from top to air feed in flame chamber, one sidewall of described flame chamber offers a bocca and be positioned at the air compensation ring of bocca periphery, and a flow-guiding mouth coaxially arranged is set on another sidewall of flame chamber that bocca is relative, described flow-guiding mouth and the second air channel through, described air compensation ring and the 3rd air channel through;

Fill clear water in described cinder chamber, and outside described cinder chamber, be provided with an automatic water replenishing device;

Automatic charging part, described automatic charging part comprises feed bin, auger conveyor, wind stopping device and material blanking tube, described feed bin is positioned at above the side of combustor, described material blanking tube is obliquely installed and blanking port is arranged in combustion chamber, described Inner Wall of Combustion Chamber near described blanking port installs an igniter, connect a wind stopping device in the upper port of described blanking port, between described wind stopping device and bin outlet, an auger conveyor is installed; And described wind stopping device is arranged in the 4th air channel, the air outlet in described 4th air channel is connected to combustion chamber;

Wind cyclic part, described wind cyclic part comprises a high pressure positive blower and some air locks, and the air inlet of described high pressure positive blower is connected to the air outlet in the first air channel, and the air inlet in described first air channel is uncovered; The air outlet of described high pressure positive blower respectively by respective arm be connected to second, third, the 4th and five-duct air lock is set respectively in each air channel;

Automatic discharge part, comprises the scraper plate acted directly on bottom cinder chamber, and described scraper plate to be arranged on a chain that can run and to be scraped by the plaster in cinder chamber under the driving of the second motor and arrange outward.

2. a kind of biomass particle burning machine according to claim 1, is characterized in that, is provided with the fireguard of an arc in the inner chamber of the binding site between described flame chamber and combustion chamber.

3. a kind of biomass particle burning machine according to claim 1, is characterized in that, arranges a gate at the discharging opening of described feed bin.

4. a kind of biomass particle burning machine according to claim 1, is characterized in that, an access panel being undertaken connecting by screw thread is fixed in the outside of described flow-guiding mouth.

5. a kind of biomass particle burning machine according to claim 1, is characterized in that, the sidewall of described flame chamber is provided with the observation window for observing internal flame situation that is tilted to lower setting.

6. a kind of biomass particle burning machine according to claim 1, is characterized in that, described fire grate comprises for track structure, comprises blade, chain and sprocket wheel, and described vane hinge is on described chain.