CN216432260U

CN216432260U - Device for drying fuel entering furnace by utilizing smoke discharged from biomass boiler

Info

Publication number: CN216432260U
Application number: CN202123246839.8U
Authority: CN
Inventors: 邵东伟; 冯海城; 栾积毅; 郭晓云; 韩平; 姜东华; 苏斌; 翁志刚; 刘文斌; 钟海涛; 罗瑶; 秦书松; 张文丰; 赵拓
Original assignee: Jiamusi University
Current assignee: Harbin Zhengjiang Environmental Protection Equipment Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-03
Anticipated expiration: 2031-12-22

Abstract

A device for drying fuel entering a furnace by utilizing smoke discharged by a biomass boiler belongs to the technical field of fuel drying. The drying method aims to solve the problems that the traditional drying method of the biomass granular fuel is time-consuming and labor-consuming, only can remove surface moisture in a short time, and is opaque to sunlight, low in efficiency and high in labor intensity. The upper cover body of the utility model is arranged above the upper box body of the vibrated fluidized bed body, the discharge end of the feed hopper is inserted in one side of the upper cover body, and the feed end of the discharge hopper is arranged at the tail end of the fluidized bed board; the flue gas inlet is arranged on the side wall of the lower box body of the vibrated fluidized bed; the smoke outlet is arranged on the other side of the upper cover body; the smoke outlet of the biomass boiler is connected with the gas inlet of a first smoke exhaust pipe, the gas outlet of the first smoke exhaust pipe is connected with the gas inlet of smoke, the gas outlet of the smoke is connected with the gas inlet of a second smoke exhaust pipe, and a first induced draft fan is arranged on the second smoke exhaust pipe; the fluidized bed plate is a plate sheet with sieve pores on the surface. The utility model discloses mainly used living beings pellet fuel's stoving.

Description

Device for drying fuel entering furnace by utilizing smoke discharged from biomass boiler

Technical Field

The utility model belongs to the technical field of the fuel is dried, especially, relate to an utilize biomass boiler to discharge fume and dry device of income stove fuel.

Background

As a renewable energy source with the characteristics of zero emission, reproducibility, large storage capacity, diversified utilization modes and the like, the biomass briquette fuel has a large influence on combustion performance due to the water content in the biomass briquette fuel. The moisture of the produced granular formed fuel is lower than 15 percent according to the standard, but the moisture of the fuel actually entering the furnace is greatly increased due to the influence of transportation, storage and climatic conditions; the water content is increased, so that the time of preheating and drying the fuel in the furnace is prolonged, the ignition is delayed, the whole combustion process is influenced, the combustion efficiency of the boiler is reduced, and the fuel consumption and the operation cost are increased; therefore, the biomass pellet fuel with high water content needs to be subjected to drying pretreatment before entering the biomass boiler.

The traditional drying method of the biomass granular fuel is generally a natural drying method, the cost of the natural drying method is relatively low, related equipment is not needed basically, but the method is easily influenced and restricted by natural weather conditions, sufficient sunlight and fields are needed, time and labor are wasted, only surface moisture can be removed in a short time, and the problems of sun-proof property, low efficiency and high labor intensity are caused; at the present stage, due to the characteristics of the supply link of the biomass pellet fuel, an enterprise generally needs to store for 7-20 days or even longer, the humidity condition of the environment in the fuel stacking process is difficult to guarantee, and the moisture absorption and the moisture increase of the biomass pellet fuel are inevitably caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve is: the traditional drying method of the biomass granular fuel is time-consuming and labor-consuming, can only remove surface moisture in a short time, and has the problems of sun-proof property, low efficiency and high labor intensity; further provides a device for drying fuel entering the furnace by utilizing the smoke discharged by the biomass boiler.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:

a device for drying fuel entering a furnace by utilizing smoke discharged by a biomass boiler comprises a vibrating fluidized bed body, an upper cover body, a feed hopper, a discharge hopper, a smoke inlet, a smoke outlet, a first smoke exhaust pipe, a second smoke exhaust pipe and a first induced draft fan; the upper cover body is arranged above the upper box body of the vibrated fluidized bed body, the vibrated fluidized bed body is sealed into a cavity structure, the discharge end of the feed hopper is inserted at one side of the upper cover body and is positioned right above the front end of the fluidized bed board in the vibrated fluidized bed body, and the feed end of the discharge hopper is arranged at the tail end of the fluidized bed board; the flue gas inlet is arranged on the side wall of the lower box body of the vibrated fluidized bed; the flue gas outlet is arranged at the other side of the upper cover body and is close to one side of the tail end of the fluidized bed plate; the smoke outlet of the biomass boiler is connected with the gas inlet of a first smoke exhaust pipe, the gas outlet of the first smoke exhaust pipe is connected with the gas inlet of smoke, the gas outlet of the smoke is connected with the gas inlet of a second smoke exhaust pipe, and a first induced draft fan is arranged on the second smoke exhaust pipe; the fluidized bed plate is a plate sheet with sieve pores on the surface.

Furthermore, the first smoke exhaust pipe is sequentially provided with a coal economizer and a second induced draft fan along the flow direction of the smoke.

Furthermore, the device also comprises two groups of beating mechanisms which are respectively arranged on the lower surface of the front end of the fluidized bed plate and the lower surface of the rear end of the fluidized bed plate; each group of beating mechanisms comprises a first motor, two gears, a conveyor belt, a cam, a first rotating shaft, a second rotating shaft and a beating rod, wherein two ends of the first rotating shaft are rotatably connected to side walls of two sides of a lower box body of the vibrated fluidized bed, two ends of the second rotating shaft are rotatably connected to side walls of two sides of the lower box body of the vibrated fluidized bed, an end head of one end of the second rotating shaft extends out of the lower box body of the vibrated fluidized bed, the tail end of the beating rod is sleeved on the first rotating shaft and can rotate along the axis of the first rotating shaft as a circle center, the cam is sleeved on the second rotating shaft and is positioned at the lower surface of the front end of the beating rod, the first motor is fixedly arranged on the lower box body of the vibrated fluidized bed body, an output shaft of the first motor is fixedly connected with one of the gears, the other gear is arranged at the end part extending out of the second rotating shaft, and the conveyor belt is sleeved on the two gears and tensioned.

Further, a chain type scraping plate mechanism is further arranged above the fluidized bed plate and comprises a second motor, two third rotating shafts, four chain wheels, two chains and a scraping plate, the front end and the rear end of the upper box body of the vibrating fluidized bed are respectively provided with one third rotating shaft, and the third rotating shafts are rotatably connected with the side walls of the two sides of the upper box body; two chain wheels are arranged on each third rotating shaft side by side at intervals, a chain is sleeved on the two chain wheels on the same side of the two third rotating shafts, and two ends of the scraper are fixedly connected to the two chains respectively.

Furthermore, the discharge hole of the discharge hopper is arranged on the side wall of the lower box body of the vibrated fluidized bed.

Furthermore, an automatic discharging box is arranged at the bottom of the discharging hopper, and a discharging port of the discharging hopper is connected with a feeding port of the automatic discharging box; the automatic discharging box comprises a box body, a discharging plate, a stop pin, a connecting rod, a discharging plate and a weighing sensor, wherein the box body is a box body with an L-shaped vertical section, the discharging plate is arranged in a feeding hole of the box body, and the weighing sensor is arranged on the discharging plate; one end of the stripper plate is hinged with the inner wall of the box body, the stop pin is connected to the outer wall of the lower box body of the vibrated fluidized bed in a sliding manner, and one end of the stop pin is vertically inserted into the box body and is positioned below the free end of the stripper plate to support the free end of the stripper plate; the upper end hinge of arranging the flitch connect in box body discharge gate department, be connected through the connecting rod between stripper and the row flitch, the intermediate position at the stripper lower surface is connected to the one end hinge of connecting rod, the other end hinge of connecting rod is connected in the inboard face intermediate position of row flitch.

Furthermore, the automatic discharging box also comprises a gear, a third motor and a PLC control system; the lower surface of the other end of the stop pin is provided with a straight tooth and is meshed with the gear; the end part of the output shaft of the third motor is fixedly connected with the gear; and the signal input end of the PLC control system is connected with the signal output end of the weighing sensor, and the signal output end of the PLC control system is connected with the signal input end of the third motor.

Furthermore, go out the hopper and be provided with the star type tripper between the bin stock tank, the discharge gate that goes out the hopper links firmly with the feed inlet of star type tripper, the discharge gate of star type tripper is connected with the feed inlet of bin stock tank.

Furthermore, the second smoke exhaust pipe is also provided with a bag-type dust collector, and the bag-type dust collector is arranged between the smoke outlet and the first induced draft fan.

Compared with the prior art, the utility model the beneficial effect who produces is:

1. the utility model mainly reuses the smoke waste heat at the tail part of the biomass boiler, reduces the production cost of the traditional drying fuel, adopts the vibrating fluidized bed to transmit materials under the unsatisfactory condition of drying of the traditional drying equipment, utilizes the smoke exhaust waste heat of the biomass boiler to dry the biomass fuel entering the furnace in the transmission process, reduces the moisture of the biomass fuel entering the furnace, ensures the quality of the biomass fuel entering the furnace, effectively improves the combustion efficiency, and simultaneously utilizes the knocking mechanism and the scraping plate mechanism to automatically clean the fluidized bed plate, thereby improving the drying efficiency;

2. the utility model adopts the star-shaped discharger and is arranged at the discharge port of the discharge hopper, the feed inlet of the star-shaped discharger receives the biomass granular fuel discharged from the discharge hopper, and the rotary impeller plays a role in conveying the material and simultaneously plays a role in sealing the upper box body of the vibrating fluidized bed, thereby preventing the smoke from being discharged from the discharge port of the star-shaped discharger in the conveying process;

3. the utility model discloses in set up the PLC controller and can play the purpose of realizing automatic discharge.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

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

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of the internal structure of the automatic discharging box.

In the figure: 1-vibrating the fluidized bed body; 1-1-fluidized bed plate; 1-2-lower box body; 1-3-loading the box body; 2-upper cover body; 3-a feed hopper; 4-a discharge hopper; 5-a flue gas inlet; 6-a biomass boiler; 7-a first smoke exhaust pipe; 8-a second smoke exhaust pipe; 9-a first induced draft fan; 10-a coal economizer; 11-a second induced draft fan; 12-a first electric machine; 13-conveyor, 14-cam; 15-knocking rod; 16-a second electric machine; 17-a sprocket; 18-a chain; 19-a scraper; 20-a star discharger; 21-automatic discharging box; 21-1-a box body; 21-2-stripper plate, 21-3-stop pin; 21-4-gear; 21-5-connecting rod, 21-6-discharging plate; 21-7-a load cell; 22-bag dust collector.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, an embodiment of the present application provides a device for drying fuel fed into a furnace by using exhaust smoke of a biomass boiler, including a vibrated fluidized bed body 1, an upper cover body 2, a feed hopper 3, a discharge hopper 4, a smoke inlet 5, a smoke outlet, a first smoke exhaust pipe 7, a second smoke exhaust pipe 8, and a first induced draft fan 9; the upper cover body 2 is arranged above an upper box body 1-3 of the vibrated fluidized bed body 1, the vibrated fluidized bed body 1 is sealed into a cavity structure, the discharge end of the feed hopper 3 is inserted into one side of the upper cover body 2 and is positioned right above the front end of a fluidized bed board 1-1 in the vibrated fluidized bed body 1, and the feed end of the discharge hopper 4 is arranged at the tail end of the fluidized bed board 1-1; the flue gas inlet 5 is arranged on the side wall of the lower box body 1-2 of the vibrated fluidized bed; the flue gas outlet is arranged at the other side of the upper cover body 2 and is close to one side of the tail end of the fluidized bed plate 1-1;

the smoke outlet of the biomass boiler 6 is connected with the gas inlet of a first smoke exhaust pipe 7, the gas outlet of the first smoke exhaust pipe 7 is connected with a smoke gas inlet 5, the smoke gas outlet is connected with the gas inlet of a second smoke exhaust pipe 8, and a first induced draft fan 9 is arranged on the second smoke exhaust pipe 8;

the fluidized bed plate 1-1 is a plate with sieve pores on the surface.

In the embodiment, the fluidized bed plate is driven to transport the biomass granular fuel by the exciting force of the vibrating motor on the vibrating fluidized bed, namely, the biomass granular fuel moves forward in a jumping way under the action of exciting force in a given direction, meanwhile, the biomass granular fuel is in a fluidized state by high-temperature flue gas input under the fluidized bed plate, the biomass granules are fully contacted with the flue gas, the drying efficiency of the vibrating fluidized bed is improved, the flue gas upwards passes through the fluidized bed plate and exchanges heat with the biomass granular fuel, and the dried flue gas is discharged through the gas outlet; the biomass granular fuel is discharged through the discharge hopper 4.

The biomass particles in the embodiment are typical biomass particle fuels such as straws, peanut shells and rice husks;

in this embodiment, can adopt current vibrated fluidized bed to reequip, device simple structure, fine satisfied the stoving requirement to living beings pellet fuel, reduced the manufacturing cost of living beings pellet fuel stoving in-process, avoided the cost expenditure of complex construction, reduced the energy resource consumption of stoving in-process, the stoving effect obtains obviously improving.

In a possible embodiment, the first exhaust pipe 7 is provided with an economizer 10 and a second induced draft fan 11 in sequence along the flow direction of the flue gas.

Under the normal operation of the biomass boiler, the exhaust gas temperature is between 240 ℃ and 300 ℃, in the embodiment, the economizer is arranged on the first exhaust pipe 7 to partially recover the waste heat in the exhaust gas, so that the smoke inlet temperature of the smoke inlet of the vibrating fluidized bed is maintained between 150 ℃ and 160 ℃, the biomass pellet fuel is prevented from being combusted due to overhigh smoke temperature, the moisture of the biomass pellet fuel is about 15 percent before drying, the moisture in the biomass pellet fuel absorbs the heat in the smoke and evaporates, the moisture of the dried biomass pellet fuel is about 6 to 7 percent, the moisture in the biomass pellet fuel is reduced, and the combustion efficiency of the biomass pellet fuel is improved.

In a possible embodiment, the device further comprises two groups of beating mechanisms which are respectively arranged at the lower surface of the front end of the fluidized bed board 1-1 and the lower surface of the rear end of the fluidized bed board 1-1;

each group of beating mechanisms comprises a first motor 12, two gears, a conveyor belt 13, a cam 14, a first rotating shaft, a second rotating shaft and a beating rod 15, wherein two ends of the first rotating shaft are rotatably connected to the side walls of two sides of a lower box body 1-2 of the vibrated fluidized bed body 1, two ends of the second rotating shaft are rotatably connected to the side walls of two sides of the lower box body 1-2 of the vibrated fluidized bed body 1, one end of the second rotating shaft extends out of the lower box body 1-2 of the vibrated fluidized bed body 1, the tail end of the beating rod 15 is sleeved on the first rotating shaft and can rotate around the axis of the first rotating shaft as the circle center, the cam 14 is sleeved on the second rotating shaft and is positioned at the lower surface of the front end of the beating rod 15, the first motor 12 is fixedly arranged on the lower box body of the vibrated fluidized bed body 1, the output shaft of the first motor 12 is fixedly connected with one gear, the other gear is arranged at the end part of the second rotating shaft extending out, the conveyor belt 13 is sleeved on the two gears and tensioned.

In this embodiment, the output shaft of the first motor 12 drives the gear fixedly connected with the output shaft to rotate, the conveyor belt drives another gear to rotate, the other gear drives the rotating shaft to rotate, so as to drive the cam on the rotating shaft to rotate, when the cam rotates, the cam drives the beating rod 15 to rotate by a certain angle by taking the hinged end of the beating rod as a shaft, the beating rod 15 continuously beats the fluidized bed plate, sieve holes on the fluidized bed plate are regularly cleaned, and the working efficiency is improved.

In a possible embodiment, a chain type scraper mechanism is further arranged above the fluidized bed plate 1-1, the chain type scraper mechanism comprises a second motor 16, two third rotating shafts, four chain wheels 17, two chains 18 and a scraper 19, the front end and the rear end of the upper box body 1-3 of the vibrated fluidized bed body 1 are respectively provided with one third rotating shaft, and the third rotating shafts are rotatably connected with the side walls of the two sides of the upper box body 1-3; two chain wheels 17 are arranged on each third rotating shaft side by side at intervals, a chain 18 is sleeved on the two chain wheels 17 on the same side of the two third rotating shafts, and two ends of a scraper 19 are fixedly connected to the two chains 18 respectively.

In this embodiment, the second motor 16 drives the rotating shaft to rotate, so as to drive the two chain wheels 17 on the rotating shaft to rotate, the other two chain wheels 17 rotate under the action of the chain 18, and the scraper 19 on the chain 18 periodically cleans the sieve holes on the fluidized bed plate, thereby improving the working efficiency.

In a possible embodiment, the discharge opening of the discharge hopper 4 is arranged on the side wall of the lower box 1-2 of the vibrated fluidized bed.

In a possible embodiment, the bottom of the discharge hopper 4 is provided with an automatic discharge box 21, and a discharge port of the discharge hopper 4 is connected with a feed port of the automatic discharge box 21;

the automatic discharging box 21 comprises a box body 21-1, a discharging plate 21-2, a stop pin 21-3, a connecting rod 21-5, a discharging plate 21-6 and a weighing sensor 21-7, wherein the box body 21-1 is a box body with an L-shaped vertical section, the discharging plate 21-2 is arranged in a feeding hole of the box body 21-1, and the weighing sensor 21-7 is arranged on the discharging plate 21-2; one end of the discharging plate 21-2 is hinged with the inner wall of the box body 21-1, the stop pin 21-3 is connected to the outer wall of the lower box body 1-2 of the vibrated fluidized bed in a sliding manner, one end of the stop pin 21-3 is vertically inserted into the box body 21-1 and is positioned below the free end of the discharging plate 21-2, and the free end of the discharging plate 21-2 is supported; the upper end of the discharging plate 21-6 is hinged to the discharging opening of the box body 21-1, a material storage chamber is formed between the discharging plate 21-2 and the discharging plate 21-6, the discharging plate 21-2 is connected with the discharging plate 21-6 through a connecting rod 21-5, one end of the connecting rod 21-5 is hinged to the middle position of the lower surface of the discharging plate 21-2, and the other end of the connecting rod 21-5 is hinged to the middle position of the inner side plate surface of the discharging plate 21-6.

In the embodiment, when the weight of the dried granular fuel on the discharging plate reaches a certain amount, generally 500kg, the weighing sensor gives out an alarm sound, the worker moves the stop pin to a certain position leftwards, the stop pin no longer has a supporting effect on the discharging plate, the discharging plate overturns by taking the hinged end of the discharging plate as a shaft, the granular fuel on the discharging plate is discharged into the storage chamber, the discharging plate is connected with the discharging plate through the connecting rod, when the discharging plate overturns, the discharging plate drives the discharging plate to overturn through the connecting rod, when the discharging plate has no material, the discharging plate is manually closed, the connecting rod drives the discharging plate to reset, the worker resets the stop pin, and primary discharging of the automatic discharging box is completed; and repeating the above actions until all the biomass pellet fuel is dried.

In a possible embodiment, the automatic discharging box 21 further comprises a gear 21-4, a third motor and a PLC control system; the lower surface of the other end of the stop pin 21-3 is provided with straight teeth and is meshed with the gear 21-4; the end part of the output shaft of the third motor is fixedly connected with a gear 21-4; and the signal input end of the PLC control system is connected with the signal output end of the weighing sensor 21-7, and the signal output end of the PLC control system is connected with the signal input end of the third motor.

In this embodiment, a signal is output to the plc controller through the weighing sensor, the weighing sensor is connected to the plc controller through a transmission line, the plc receives the signal and then sends a signal to the third motor, the third motor drives the gear to rotate, the gear drives the stop pin to move to a certain position to the left, the stop pin no longer has a supporting function on the discharging plate, the discharging plate overturns with the hinged end as the shaft, granular fuel on the discharging plate is discharged into the storage chamber, the discharging plate is connected to the discharging plate through the connecting rod, when the discharging plate overturns, the discharging plate is driven to overturn through the connecting rod, when the discharging plate has no material, the discharging plate is manually closed, the connecting rod drives the discharging plate to reset, when the weight on the weighing sensor is 0, the signal is transmitted to the plc, the plc receives the signal and then transmits the signal to the third motor, the third motor drives the gear to reversely rotate, so that the stop pin moves to the discharging plate to the right, completing the primary discharging of the automatic discharging box; the actions are repeated until all the biomass pellet fuels are dried, and manual periodical door opening and material discharging are avoided by arranging the PLC control system in the embodiment. In a possible embodiment, a star-shaped discharger 20 is arranged between the discharge hopper 4 and the discharge box 21, the discharge port of the discharge hopper 4 is fixedly connected with the feed port of the star-shaped discharger 20, and the discharge port of the star-shaped discharger 20 is connected with the feed port of the discharge box 21.

In this embodiment, the model of the star discharger is YJD 26;

in this embodiment, adopt star type tripper and install in the discharge opening department of play hopper, the discharge hopper exhaust living beings pellet fuel is received to the feed inlet of star type tripper, relies on rotatory impeller to play the effect of transported substance material, is responsible for the sealed effect of box on the vibration fluidized bed again simultaneously, prevents that the flue gas from discharging from star type tripper discharge opening in the transportation process.

In a possible embodiment, the second smoke exhaust pipe 8 is further provided with a bag-type dust collector 22, and the bag-type dust collector 22 is arranged between the smoke outlet and the first induced draft fan 9.

In this embodiment, the flue gas discharged from the vibrated fluidized bed is finally dedusted by the bag-type deduster and discharged under the action of the induced draft fan 9.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims

1. The utility model provides an utilize biomass boiler to discharge fume and dry device of stove fuel that goes into which characterized in that: the device comprises a vibrating fluidized bed body (1), an upper cover body (2), a feed hopper (3), a discharge hopper (4), a flue gas inlet (5), a flue gas outlet, a first smoke exhaust pipe (7), a second smoke exhaust pipe (8) and a first induced draft fan (9); the upper cover body (2) is arranged above an upper box body (1-3) of the vibrating fluidized bed body (1), the vibrating fluidized bed body (1) is sealed into a cavity structure, the discharge end of the feed hopper (3) is inserted into one side of the upper cover body (2) and is positioned right above the front end of the fluidized bed plate (1-1) in the vibrating fluidized bed body (1), and the feed end of the discharge hopper (4) is arranged at the tail end of the fluidized bed plate (1-1); the flue gas inlet (5) is arranged on the side wall of the lower box body (1-2) of the vibrated fluidized bed; the flue gas outlet is arranged at the other side of the upper cover body (2) and is close to one side of the tail end of the fluidized bed plate (1-1);

the smoke outlet of the biomass boiler (6) is connected with the gas inlet of a first smoke exhaust pipe (7), the gas outlet of the first smoke exhaust pipe (7) is connected with a smoke gas inlet (5), the smoke gas outlet is connected with the gas inlet of a second smoke exhaust pipe (8), and a first induced draft fan (9) is arranged on the second smoke exhaust pipe (8);

the fluidized bed plate (1-1) is a plate with sieve pores on the surface.

2. The device for drying the fuel fed into the furnace by using the smoke discharged by the biomass boiler according to the claim 1 is characterized in that: the first smoke exhaust pipe (7) is sequentially provided with a coal economizer (10) and a second induced draft fan (11) along the flow direction of smoke.

3. The device for drying the fuel fed into the furnace by using the smoke discharged by the biomass boiler is characterized in that: the device also comprises two groups of beating mechanisms which are respectively arranged on the lower surface of the front end of the fluidized bed plate (1-1) and the lower surface of the rear end of the fluidized bed plate (1-1);

each group of beating mechanisms comprises a first motor (12), two gears, a conveyor belt (13), a cam (14), a first rotating shaft, a second rotating shaft and a beating rod (15), wherein two ends of the first rotating shaft are rotatably connected to the side walls of two sides of a lower box body (1-2) of the vibrated fluidized bed, two ends of the second rotating shaft are rotatably connected to the side walls of two sides of the lower box body (1-2) of the vibrated fluidized bed, one end of the second rotating shaft extends out of the lower box body (1-2) of the vibrated fluidized bed, the tail end of the beating rod (15) is sleeved on the first rotating shaft and can rotate around the axis of the first rotating shaft as the circle center, the cam (14) is sleeved on the second rotating shaft and is positioned at the lower surface of the front end of the beating rod (15), the first motor (12) is fixedly arranged on the lower box body of the vibrated fluidized bed (1), and the output shaft of the first motor (12) is fixedly connected with one of the gears, the other gear is arranged at the end part of the second rotating shaft extending out, and the conveyor belt (13) is sleeved on the two gears and tensioned.

4. The device for drying the fuel fed into the furnace by using the smoke discharged by the biomass boiler is characterized in that: a chain type scraping plate mechanism is further arranged above the fluidized bed plate (1-1), the chain type scraping plate mechanism comprises a second motor (16), two third rotating shafts, four chain wheels (17), two chains (18) and a scraping plate (19), the front end and the rear end of the upper box body (1-3) of the vibrating fluidized bed are respectively provided with one third rotating shaft, and the third rotating shafts are rotatably connected with the side walls of the two sides of the upper box body (1-3); two chain wheels (17) are arranged on each third rotating shaft side by side at intervals, a chain (18) is sleeved on the two chain wheels (17) on the same side of the two third rotating shafts, and two ends of a scraper (19) are fixedly connected to the two chains (18) respectively.

5. The device for drying the fuel fed into the furnace by using the smoke discharged by the biomass boiler is characterized in that: the discharge port of the discharge hopper (4) is arranged on the side wall of the lower box body (1-2) of the vibrated fluidized bed.

6. The device for drying the fuel fed into the furnace by using the smoke discharged by the biomass boiler according to claim 5, is characterized in that: an automatic discharging box (21) is arranged at the bottom of the discharging hopper (4), and a discharging port of the discharging hopper (4) is connected with a feeding port of the automatic discharging box (21);

the automatic discharging box (21) comprises a box body (21-1), a discharging plate (21-2), a stop pin (21-3), a connecting rod (21-5), a discharging plate (21-6) and a weighing sensor (21-7), wherein the box body (21-1) is a box body with an L-shaped vertical section, the discharging plate (21-2) is arranged in a feeding hole of the box body (21-1), and the weighing sensor (21-7) is arranged on the discharging plate (21-2); one end of the discharging plate (21-2) is hinged with the inner wall of the box body (21-1), the stop pin (21-3) is connected to the outer wall of the lower box body (1-2) of the vibrated fluidized bed in a sliding manner, one end of the stop pin (21-3) is vertically inserted into the box body (21-1) and is positioned below the free end of the discharging plate (21-2) to support the free end of the discharging plate (21-2); the upper end of the discharging plate (21-6) is hinged at the discharging opening of the box body (21-1), the discharging plate (21-2) is connected with the discharging plate (21-6) through a connecting rod (21-5), one end of the connecting rod (21-5) is hinged at the middle position of the lower surface of the discharging plate (21-2), and the other end of the connecting rod (21-5) is hinged at the middle position of the inner side plate surface of the discharging plate (21-6).

7. The device for drying the fuel fed into the furnace by using the smoke discharged by the biomass boiler according to claim 6, is characterized in that: the automatic discharging box (21) also comprises a gear (21-4), a third motor and a PLC control system; the lower surface of the other end of the stop pin (21-3) is provided with straight teeth and is meshed with the gear (21-4); the end part of the output shaft of the third motor is fixedly connected with a gear (21-4); and the signal input end of the PLC control system is connected with the signal output end of the weighing sensor (21-7), and the signal output end of the PLC control system is connected with the signal input end of the third motor.

8. The device for drying the fuel fed into the furnace by using the smoke discharged by the biomass boiler according to claim 7, is characterized in that: discharge hopper (4) and arrange and be provided with star type tripper (20) between hopper (21), the discharge gate of discharge hopper (4) links firmly with the feed inlet of star type tripper (20), the discharge gate of star type tripper (20) is connected with the feed inlet of row hopper (21).

9. The device for drying the fuel fed into the furnace by using the smoke discharged by the biomass boiler according to claim 8, is characterized in that: the second smoke exhaust pipe (8) is further provided with a bag-type dust collector (22), and the bag-type dust collector (22) is arranged between the smoke outlet and the first induced draft fan (9).