阅读说明：本技术 生物质粉体燃料储供装置 (Biomass powder fuel storage and supply device ) 是由 陈隆 王实朴 王乃继 张红顺 罗伟 张鑫 李小炯 刘增斌 程晓磊 程鹏 牛芳 于 2021-09-08 设计创作，主要内容包括：本发明公开了一种生物质粉体燃料储供装置,所述储供装置包括料仓,所述料仓用于储存生物质粉体燃料；称重仓,所述称重仓具有入料口和出料口,所述入料口与所述料仓相连,所述称重仓内设有螺旋给料器,所述螺旋给料器沿从所述入料口向所述出料口的方向布置；风粉混合器,所述风粉混合器与所述称重仓的出料口相连。因此,根据发明实施例的生物质粉体燃料储供装置具有不易结拱、堵塞和便于稳定输送生物质粉体燃料的优点。(The invention discloses a biomass powder fuel storage and supply device, which comprises a storage bin, a first storage tank and a second storage tank, wherein the storage bin is used for storing biomass powder fuel; the weighing bin is provided with a feeding port and a discharging port, the feeding port is connected with the bin, a spiral feeder is arranged in the weighing bin, and the spiral feeder is arranged along the direction from the feeding port to the discharging port; and the air-powder mixer is connected with a discharge port of the weighing bin. Therefore, the biomass powder fuel storage and supply device provided by the embodiment of the invention has the advantages of being not easy to form arch and block and convenient for stably conveying the biomass powder fuel.)

1. The utility model provides a living beings powder fuel storage and supply device which characterized in that includes:

the storage bin is used for storing biomass powder fuel;

the weighing bin is provided with a feeding port and a discharging port, the feeding port is connected with the bin, a spiral feeder is arranged in the weighing bin, and the spiral feeder is arranged along the direction from the feeding port to the discharging port;

and the air-powder mixer is connected with a discharge port of the weighing bin.

2. The biomass powder fuel storage and supply device according to claim 1, wherein the storage bin comprises a storage bin body and a material distribution pipe, one end of the material distribution pipe is connected with the lower end of the storage bin body, and the other end of the material distribution pipe is connected with the feeding port.

3. The biomass powder fuel storage and supply device according to claim 2, wherein the material distribution pipes and the material inlet are both two and are in one-to-one correspondence, and the two material distribution pipes are arranged at intervals along the radial direction of the silo body.

4. The biomass powder fuel storage and supply device according to claim 2, further comprising a star-shaped rotary valve, wherein the material distribution pipe is connected with the material inlet through the star-shaped rotary valve.

5. The apparatus as claimed in claim 1, wherein the screw feeder comprises a screw feeder

The rotating shaft is arranged in the weighing bin along the direction from the feeding port to the discharging port;

the blades are spirally arranged on the periphery of the rotating shaft;

the driving piece is connected with the revolving shaft to drive the revolving shaft to rotate.

6. The biomass powder fuel storage and supply device according to claim 5, wherein the weighing bin comprises a weighing bin body, a straight pipe section and an inclined pipe section which are connected in sequence, the screw feeder is positioned in the weighing bin body and the straight pipe section, and the inclined pipe section is connected with the air-powder mixer.

7. The biomass powder fuel storage and supply device according to claim 6, wherein a gap between an outer edge of the blade located in the straight pipe section and an inner wall of the straight pipe section is 1-2 mm.

8. The biomass powder fuel storage and supply device according to claim 5, wherein the screw feeder further comprises a stirring sheet, and the stirring sheet is connected with the rotating shaft and is positioned above the blades.

9. The biomass powder fuel storage and supply device according to claim 8, wherein the stirring sheets are arranged in plurality, and the stirring sheets are arranged at intervals along the circumferential direction of the rotating shaft and/or the stirring sheets are arranged at intervals along the length direction of the rotating shaft.

10. The biomass powder fuel storage and supply device according to claim 5, wherein the driving member is a motor.

Technical Field

The invention relates to the technical field of biomass powder boilers, in particular to a biomass powder fuel storage and supply device.

Background

The biomass powder fuel has the physical characteristics of small density, large length-diameter ratio, large compression ratio, poor fluidity and the like, and the biomass particle size adopted by the biomass powder boiler is 0.1-2.0 mm. Therefore, storage and supply of biomass powder fuel is crucial in a biomass powder boiler system. In the related technology, because the biomass is low in density, light in weight and rich in fiber, when the particle size of biomass powder is gradually increased from 80 meshes to more than 20 meshes, the fluidity is poor, and the powder is easy to generate phenomena such as bridging, arching and the like in a bin, so that the boiler combustion fluctuates due to unstable feeding, and even the fire is cut off.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of the invention provides a biomass powder fuel storage and supply device.

The biomass powder fuel storage and supply device according to the embodiment of the invention comprises:

the storage bin is used for storing biomass powder fuel;

the weighing bin is provided with a feeding port and a discharging port, the feeding port is connected with the bin, a spiral feeder is arranged in the weighing bin, and the spiral feeder is arranged along the direction from the feeding port to the discharging port;

and the air-powder mixer is connected with a discharge port of the weighing bin.

Therefore, the biomass powder fuel storage and supply device provided by the embodiment of the invention has the advantages of being not easy to form arch and block and convenient for stably conveying the biomass powder fuel.

In some embodiments, the storage bin comprises a storage bin body and a material distribution pipe, wherein one end of the material distribution pipe is connected with the lower end of the storage bin body, and the other end of the material distribution pipe is connected with the material inlet.

In some embodiments, the material distribution pipes and the material inlet are both two and correspond to each other one by one, and the two material distribution pipes are arranged at intervals along the radial direction of the storage bin body.

The biomass powder fuel storage and supply device provided by the embodiment of the invention further comprises a star-shaped rotary valve, and the material distribution pipe is connected with the material inlet through the star-shaped rotary valve.

In some embodiments, the screw feeder comprises

The rotating shaft is arranged in the weighing bin along the direction from the feeding port to the discharging port;

the blades are spirally arranged on the periphery of the rotating shaft;

the driving piece is connected with the revolving shaft to drive the revolving shaft to rotate.

In some embodiments, the weighing bin comprises a weighing bin body, a straight pipe section and an inclined pipe section which are connected in sequence, the screw feeder is positioned in the weighing bin body and the straight pipe section, and the inclined pipe section is connected with the air-powder mixer.

In some embodiments, the clearance between the outer edge of the blade in the straight pipe section and the inner wall of the straight pipe section is 1-2 mm.

In some embodiments, the screw feeder further comprises a plectrum sheet connected to the rotating shaft and located above the blades.

In some embodiments, the stirring sheet is a plurality of stirring sheets, a plurality of stirring sheets are arranged at intervals along the circumferential direction of the rotating shaft, and/or a plurality of stirring sheets are arranged at intervals along the length direction of the rotating shaft.

In some embodiments, the drive member is an electric motor.

Drawings

Fig. 1 is a schematic diagram of a biomass powder fuel storage and supply device according to an embodiment of the invention.

Fig. 2 is a schematic diagram of a biomass powder fuel storage and supply device according to an embodiment of the invention.

Fig. 3 is a schematic view of a screw feeder according to an embodiment of the invention.

FIG. 4 is a schematic diagram of a top view of a weigh bin according to an embodiment of the invention.

Fig. 5 is a schematic diagram of an air-powder mixer according to an embodiment of the invention.

Reference numerals:

a biomass powder fuel storage and supply device 100;

the device comprises a storage bin 1, a body 11, a distributing pipe 12, a first distributing pipe 121 and a second distributing pipe 122;

the weighing bin 2, the weighing bin body 21, the straight pipe section 22, the inclined pipe section 23, the feeding port 24, the first feeding port 241 and the second feeding port 242;

and the discharge port 25, the screw feeder 26, the rotary shaft 261, the blade 262, the driving member 263 and the stirring piece 264;

an air-powder mixer 3 and a Venturi pipeline 31.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The biomass powder fuel storage and supply device 100 according to the embodiment of the invention is described below with reference to the drawings.

As shown in fig. 1 to 5, a biomass powder fuel storage and supply device 100 according to an embodiment of the present invention includes a silo 1, a weighing silo 2, and an air-powder mixer 3.

The storage bin 1 is used for storing biomass powder fuel. The weighing bin 2 is provided with a feeding port 24 and a discharging port 25, and the feeding port 24 is connected with the bin 1. The weighing compartment 2 is provided with a screw feeder 26, which screw feeder 26 is arranged in the direction from the inlet 24 to the outlet 25. The air-powder mixer 3 is connected with the discharge port 25 of the weighing bin 2.

Specifically, feed bin 1 is located the top of storehouse 2 of weighing, and the bottom of feed bin 1 has the feed bin export, and the feed bin export links to each other with pan feeding mouth 24 to make the interior living beings powder fuel of feed bin 1 can follow pan feeding mouth 24 and get into in the storehouse 2 of weighing. The inlet 24 and the outlet 25 are arranged substantially opposite to each other in the vertical direction, and the inlet 24 is located above the outlet 25. And a screw feeder 26 is arranged in the weighing bin 2, so that the biomass powder fuel in the weighing bin 2 is conveyed by the screw feeder 26 to be convenient to move towards the discharge port 25. Therefore, the biomass powder fuel enters the air-powder mixer 3 and is mixed with air and then is output to the air-powder mixer 3, so that the biomass powder fuel is convenient to burn.

According to the biomass powder fuel storage and supply device 100 provided by the embodiment of the invention, the bin 1 and the weighing bin 2 are arranged, and the weighing bin 2 can weigh the weight of the goods in the weighing bin, so that the bin 1 can send biomass powder fuel with preset weight into the weighing bin 2. The weighing bin 2 is internally provided with a screw feeder 26, the preset weight of the biomass powder fuel is suitable for the conveying weight of the screw feeder 26, and the screw feeder 26 is arranged along the direction from the feeding port 24 to the discharging port 25, so that the biomass powder fuel with the preset weight in the bin 1 can be stably conveyed to the discharging port 25 by the screw feeder 26 after entering the feeding port 24. Therefore, the biomass powder fuel can be prevented from arching and blocking the weighing bin 2, and then the biomass powder fuel can enter the air-powder mixer 3 to be mixed with air and then can be stably output out of the air-powder mixer 3.

Therefore, the storage and supply device 100 for biomass powder fuel according to the embodiment of the invention has the advantages of being not easy to form arch and block and being convenient for stably conveying the biomass powder fuel.

As shown in fig. 1 and 2, in some embodiments, the silo 1 comprises a silo body 11 and a distribution pipe 12. One end of the material distributing pipe 12 is connected with the lower end of the bin body 11, and the other end is connected with the material inlet 24. Specifically, the bin body 11 is located above the material distribution pipe 12, the upper end of the material distribution pipe 12 is connected with the lower end of the bin body 11, and the lower end of the material distribution pipe 12 is connected with the feeding port 24. From this, the living beings powder fuel in the feed bin body 11 is convenient for from top to bottom enter into branch material pipe 12 under the effect of gravity in to pass pan feeding mouth 24 and enter into in the storehouse 2 of weighing.

As shown in fig. 1 and 4, in some embodiments, the material distribution pipes 12 and the material inlet 24 are both two and correspond to each other one by one, so that the biomass pulverized fuel in the storage bin 1 can be distributed into the weighing bin 2, thereby preventing the storage bin 1 or the weighing bin 2 from being blocked by the biomass pulverized fuel. The two distributing pipes 12 are arranged at intervals in the radial direction of the silo body 11, and specifically, the two distributing pipes 12 are arranged at intervals in the horizontal direction of the silo body 11. For example, the distributing pipe 12 includes a first distributing pipe 121 and a second distributing pipe 122, the first distributing pipe 121 and the second distributing pipe 122 are oppositely disposed in the left-right direction, and the first distributing pipe 121 is located on the right side of the second distributing pipe 122. The feeding port 24 includes a first feeding port 241 and a second feeding port 242, the first feeding port 241 and the second feeding port 242 are oppositely disposed along the left-right direction, and the first feeding port 241 is located at the right side of the second feeding port 242. The first material distribution pipe 121 is connected with the first material inlet 241, so that the biomass powder fuel coming out of the first material distribution pipe 121 enters the weighing bin 2 through the first material inlet 241; the second branch pipe 122 is connected with the second feeding port 242, so that the biomass powder fuel coming out from the second branch pipe 122 enters the weighing bin 2 through the second feeding port 242, and the biomass powder fuel is not easy to block the bin 1 or the weighing bin 2.

In some embodiments, a star-shaped rotary valve is also included, through which the dispensing tube 12 is connected to the inlet 24. Specifically, when the star-shaped rotary valve is started, biomass powder fuel in the distributing pipe 12 can enter the weighing bin 2 through the feeding port 24; when the star-shaped rotary valve stops, the biomass powder fuel in the distributing pipe 12 does not enter the weighing bin 2. Therefore, when the biomass powder fuel in the weighing bin 2 is less than the preset weight, the star-shaped rotary valve is started; and when the biomass powder fuel in the weighing bin 2 is more than the preset weight, the star-shaped rotary valve is stopped. Thereby can make the weight of the living beings powder fuel in the storehouse 2 of weighing for predetermineeing weight to can make the screw feeder 26 transportation more stable, output during the air-powder blender 3 more stable. For example, the preset weight of the biomass powder fuel in the weighing bin 2 is greater than or equal to 500kg and less than or equal to 800kg, which is convenient for transportation by the screw feeder 26. When the biomass powder fuel in the weighing bin 2 is less than 500kg, the star-shaped rotary valve is started; when the biomass powder fuel in the weighing bin 2 is more than 800kg, the star-shaped rotary valve is stopped.

As shown in fig. 3, in some embodiments, the screw feeder 26 includes a swivel shaft 261, a blade 262, and a drive member 263.

The rotary shaft 261 is disposed in the weighing compartment 2 in the direction from the feed port 24 to the discharge port 25, and the blades 262 are spirally disposed on the periphery side of the rotary shaft 261. For example, the rotation shaft 261 extends in the up-down direction, the rotation shaft 261 is disposed in the weighing compartment 2 in the up-down direction, and the blades 262 are disposed spirally in the up-down direction on the peripheral side of the rotation shaft 261.

The driving member 263 is connected to the rotation shaft 261 to drive the rotation shaft 261 to rotate. Specifically, the driving member 263 drives the revolving shaft 261 to rotate, so as to drive the spiral blade 262 to rotate, thereby enabling the blade 262 to drive the biomass pulverized fuel to move from the feeding port 24 to the discharging port 25. For example, the driving member 263 drives the revolving shaft 261 to rotate, so that the blades 262 drive the biomass pulverized fuel to move from top to bottom.

As shown in fig. 1, in some embodiments, the driving member 263 is a motor, and the motor is connected to the rotating shaft 261 through a speed reducer to drive the rotating shaft 261 to rotate.

As shown in fig. 1 and 2, in some embodiments, the weigh bin 2 includes a weigh bin body 21, a straight pipe section 22, and an inclined pipe section 23 connected in series. Specifically, the weighing bin 2 comprises a weighing bin body 21, a straight pipe section 22 and an inclined pipe section 23 which are connected in sequence from top to bottom.

The screw feeders 26 are positioned in the weigh bin body 21 and the straight pipe section 22, and both the weigh bin body 21 and the straight pipe section 22 extend in the up-down direction, so that the screw feeders 26 can be conveniently installed in the weigh bin body 21 and the straight pipe section 22. And the diameter of the straight pipe section 22 is reduced along the direction (from top to bottom) adjacent to the inclined pipe section 23, and the diameter of the blade 262 of the screw feeder 26 is reduced along the direction (from top to bottom) adjacent to the inclined pipe section 23, so that the biomass powder fuel can be prevented from arching and blocking the straight pipe section 22, and the screw feeder 26 can be prevented from idling.

The inclined pipe section 23 is connected with the air-powder mixer 3, and the diameter of the inclined pipe section 23 is reduced along the direction close to the air-powder mixer 3, so that the biomass powder fuel can conveniently enter the air-powder mixer 3. Specifically, the inclined pipe section 23 can prevent the biomass powder fuel from accumulating in the vertical direction. The air-powder mixer 3 comprises a venturi pipe 31, the air-powder mixer 3 extracts the biomass powder fuel in the inclined pipe section 23 into the air-powder mixer 3 by negative pressure generated by the high-speed jet air flow passing through the venturi pipe 31, and outputs the biomass powder fuel out of the air-powder mixer 3 after mixing with the high-speed jet air flow passing through the venturi pipe 31.

As shown in FIG. 2, in some embodiments, the clearance between the outer edges of the vanes 262 within the straight tube section 22 and the inner wall of the straight tube section 22 is 1-2 mm. Thus, when the air flow injected at a high speed passes through the venturi pipe 31 of the air-powder mixer 3, the negative pressure generated by the air-powder mixer 3 through the venturi structure can take up the gap between the outer edges of the inclined tube section 23 and the blades 262 and the inner wall of the straight tube section 22. That is, the negative pressure generated by the venturi structure of the air-powder mixer 3 can also provide a negative pressure environment for the gap between the outer edges of the inclined tube section 23 and the blades 262 and the inner wall of the straight tube section 22, so as to facilitate the movement of the biomass powder fuel in the gap between the outer edges of the blades 262 and the inner wall of the straight tube section 22 and the inclined tube section 23 towards the air-powder mixer 3.

As shown in FIG. 3, in some embodiments, the screw feeder 26 further includes a kick-out blade 264, the kick-out blade 264 being coupled to the rotary shaft 261 and positioned above the vanes 262. For example, the material pulling sheet 264 is located in the weighing bin body 21, so that the material pulling sheet 264 always stirs the biomass powder fuel in the weighing bin body 21 when the rotating shaft 261 rotates, thereby preventing the biomass powder fuel from bridging and arching, and further preventing the biomass powder fuel from blocking the weighing bin 2.

Optionally, the kicker blade 264 is obliquely provided on the rotary shaft 261.

As shown in fig. 3, in some embodiments, the plurality of stirring blades 264 may be provided, and the plurality of stirring blades 264 may be spaced along the circumference of the rotation shaft 261 and/or the plurality of stirring blades may be spaced along the length of the rotation shaft 261. The plurality of stirring pieces 264 are arranged at intervals along the circumferential direction of the rotating shaft 261, and/or the plurality of stirring pieces are arranged at intervals along the length direction of the rotating shaft 261 and include: a. the plurality of dial pieces 264 are arranged at intervals in the circumferential direction of the rotary shaft 261, thereby better preventing bridging and arching of the powder fuel in the circumferential direction of the rotary shaft 261; b. the plurality of kick-ups are arranged at intervals along the length direction of the rotating shaft 261, so that bridging and arching of the powder fuel are better prevented in the length direction of the rotating shaft 261; the plurality of dial plates 264 are arranged at intervals in the circumferential direction of the rotary shaft 261, and the plurality of dial plates are arranged at intervals in the longitudinal direction of the rotary shaft 261, so that bridging and arching of the pulverized fuel are better prevented in the axial direction and the longitudinal direction of the rotary shaft 261.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.