CN112340480A

CN112340480A - Stokehole feeding system

Info

Publication number: CN112340480A
Application number: CN202011336267.XA
Authority: CN
Inventors: 贾星亮; 王热华; 万为华; 贾奥; 王熙福; 王熙毅
Original assignee: Anhua Huasheng Bioenergy Co ltd
Current assignee: Anhua Huasheng Bioenergy Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-02-09

Abstract

The invention discloses a stokehole feeding system, which comprises: prop up the mounting bracket of locating ground, be equipped with unloading unit and defeated material unit on the mounting bracket, the unloading unit is used for the unloading and stirs the material of transferring, and defeated material unit connection is in the output of unloading unit to be used for will being carried forward by the material of unloading unit output. The output of defeated material unit is connected with the unloading nest of tubes, and the discharge end and the boiler combustion chamber intercommunication of unloading nest of tubes to be used for will being by the material unloading of defeated material unit propelling movement to the boiler combustion chamber, and be equipped with the discharge valve in the pipeline of unloading nest of tubes, emit outward by the unloading unit after through unloading nest of tubes and defeated material unit with the flame in the boiler combustion chamber when being used for preventing to unload. The stokehole feeding system is simple to operate, can solve the problems of outward smoke spraying, flame spraying and the like at the feeding port in the prior art, can ensure smooth feeding, improves the generating capacity of a generator set, and effectively reduces the danger during working and the pollution to the operating environment.

Description

Stokehole feeding system

Technical Field

The invention relates to the technical field of biological generator sets, in particular to a stokehole feeding system.

Background

During the operation of the biological power generating set, a stokehole feeding system of the biological power generating set needs to continuously convey the biomass fuel to a combustion chamber of a boiler. Because the feed inlet communicated with the boiler combustion chamber is a positive pressure area, the feed inlet often has the phenomena of material spraying, water spraying and ash lifting in actual production, thereby causing unsmooth fuel conveying, influencing the generating capacity of a generator set, having certain operation danger and causing serious operation environmental pollution.

Disclosure of Invention

The invention provides a stokehole feeding system, which aims to solve the technical problems of smoke spraying, fire spraying, ash flying and the like at a feeding port of an existing unit.

The technical scheme adopted by the invention is as follows:

a stokehole feed system comprising: the device comprises a mounting frame, a blanking unit and a material conveying unit, wherein the mounting frame is arranged on the ground, the blanking unit is used for blanking and stirring the lowered material, and the material conveying unit is connected to the output end of the blanking unit and used for pushing the material output by the blanking unit forwards; the output of defeated material unit 24 is connected with the unloading nest of tubes, and the discharge end and the boiler combustion chamber intercommunication of unloading nest of tubes to be used for unloading to the boiler combustion chamber by the material of defeated material unit propelling movement, and be equipped with the discharge valve in the pipeline of unloading nest of tubes, emit outward by the unloading unit after passing through unloading nest of tubes and defeated material unit with the flame in the boiler combustion chamber when being used for preventing to unload.

Further, the blanking unit comprises a biomass bunker for placing the biomass fuel and a mixer for stirring the placed biomass fuel; the biomass fuel bin is vertically erected on the mounting frame, and the feeding end of the biomass fuel bin faces upwards and the discharging end of the biomass fuel bin faces downwards; the mixer is erected on the mounting frame, the feed end of the mixer is communicated with the discharge end of the biomass fuel bin, and the discharge end of the mixer is communicated with the material conveying unit.

Furthermore, the blanking unit also comprises a chemical raw material bin for blanking chemical raw materials for desulfurizing the biomass fuel and a first blanking pipe for conveying the lowered chemical raw materials; the chemical raw material bin is erected on the mounting frame, and the feeding end of the chemical raw material bin faces upwards and the discharging end of the chemical raw material bin faces downwards; the first blanking pipe is erected on the mounting frame, the feeding end of the first blanking pipe is communicated with the discharging end of the chemical raw material bin, and the discharging end of the first blanking pipe is communicated with the material conveying unit 24.

Further, the material conveying unit comprises a material conveying pipe for conveying materials and a screw feeder for pushing the materials forwards along the material conveying pipe; the conveying pipe is erected on the mounting frame, and the discharge end of the material mixer and the discharge end of the first blanking pipe are respectively communicated with the conveying pipe; the screw feeder is erected on the mounting frame and extends into the conveying pipe from the feeding end of the conveying pipe.

Further, the material conveying pipes are arranged along the horizontal direction; the first blanking pipe and the material mixer are sequentially communicated with the material conveying pipe along the material conveying direction; the screw feeder is arranged at the feed end of the feed delivery pipe, the power part of the screw feeder is positioned on the mounting frame, and the screw driving part of the screw feeder axially extends into the feed delivery pipe from the feed end of the feed delivery pipe.

Further, the blanking pipe group comprises a blanking pipe for lowering materials and a second blanking pipe for guiding the lowered materials into the boiler combustion chamber; the feeding end of the blanking pipe is communicated with the discharging end of the conveying pipe; the feeding end of the second blanking pipe is communicated with the discharging end of the blanking pipe, and the discharging end of the second blanking pipe extends into the boiler combustion chamber; the discharge valve is arranged in the pipeline of the blanking pipe and is close to the second blanking pipe.

Further, the discharge valve comprises an outer shell with an installation inner cavity, a feed inlet and a discharge outlet which are respectively communicated with the installation inner cavity are arranged on the outer shell, and the feed inlet and the discharge outlet are respectively communicated with the discharging pipe; the mounting inner cavity is internally provided with a rotatably arranged mounting rotating shaft, and the mounting rotating shaft is connected with a driving member for driving the mounting rotating shaft to rotate; the installation rotating shaft is provided with a plurality of groups of partition plate groups which are sequentially arranged at intervals along the circumferential direction of the installation rotating shaft, the plurality of groups of partition plate groups are used for partitioning the installation inner cavity into a plurality of material guide cavities which are sequentially arranged along the circumferential direction of the installation rotating shaft, the material guide cavities are alternately communicated with the feeding port and the discharging port under the rotating action of the installation rotating shaft so as to feed the fuel which is contained by the feeding port to the discharging port, and the partition plate groups are in soft butt joint with the wall surface of the installation inner cavity so as to form a closed cavity.

Furthermore, the outer shell is in a hollow shaft cylinder shape with two closed ends; the installation rotating shaft is arranged along the axial direction of the outer shell, two ends of the installation rotating shaft are rotatably supported on end plates at two ends of the outer shell, and the driving end of the installation rotating shaft extends out of the end plate at the corresponding side and then is connected with the driving component; the partition plate groups are uniformly arranged at intervals along the circumferential direction of the installation rotating shaft, and are respectively in soft butt joint with the inner ring wall of the outer shell and the inner side walls of the two end plates.

Furthermore, the partition plate group comprises partition plates and circumferential contact plate parts; the partition plate is arranged along the axial direction of the installation rotating shaft, the first side edge of the partition plate in the width direction is fixed with the outer circular surface of the installation rotating shaft, the second side edge of the partition plate in the width direction extends towards the inner circular surface of the outer shell in the radial direction, the circumferential contact plate is detachably connected to the second side edge of the partition plate in the length direction of the partition plate, and the circumferential contact plate is in soft butt joint with the inner circular surface of the outer shell; or the first side edge of the partition plate in the width direction intersects with the outer circle surface of the installation rotating shaft in a spiral line mode, the second side edge of the partition plate in the width direction extends towards the inner ring surface of the outer shell, the plate is contacted in the circumferential direction and is detachably connected to the second side edge of the partition plate in the length direction of the partition plate, and the plate and the outer shell are contacted in the circumferential direction in soft abutting mode through the inner ring surface

Furthermore, the circumferential contact plate piece comprises a circumferential contact plate, and the circumferential contact plate is connected to a positive vertical surface of the partition plate facing to the rotating direction; or the circumferential contact plate piece comprises two circumferential contact plates which are respectively arranged at two sides of the partition plate, and the butt joint edge of at least one circumferential contact plate and the inner annular wall of the outer shell body is a hairbrush edge.

The invention has the following beneficial effects:

when the stokehole feeding system works, firstly, materials formed by biomass fuels and chemical raw materials are fed by the feeding unit and are fully stirred, the materials which are fed by the feeding unit and are stirred enter the material conveying unit, the material conveying unit pushes the materials towards the direction close to a boiler combustion chamber, the materials conveyed by the material conveying unit enter the feeding pipe group, and finally the materials enter the boiler combustion chamber through the feeding pipe group, the stokehole feeding system is simple to operate, and a discharge valve is arranged in a pipeline of the feeding pipe group, so that smoke, flame, flying ash and the like in the boiler combustion chamber can be effectively prevented from flowing outwards after passing through the feeding pipe group and the material conveying unit, the problems of outward smoke spraying, flame spraying and the like at a feed inlet in the prior art are solved, the feeding is ensured to be smooth, the power generation capacity of a power generation unit is improved, and the power generation capacity of the power generation unit is increased by about 3000 kilowatts per hour, and effectively reduces the danger during working and the pollution to the working environment.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

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 and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a stokehold feed system according to a preferred embodiment of the present invention;

FIG. 2 is a schematic cross-sectional front view of the discharge valve of FIG. 1;

fig. 3 is a schematic view of the half-section structure of fig. 2.

Description of the figures

21. A discharge valve; 211. an outer housing; 2111. a feed inlet; 2112. a discharge port; 2113. a material guiding cavity; 2114. an operation port; 212. installing a rotating shaft; 213. a drive member; 214. a separator plate group; 2141. a partition plate; 2142. a circumferential touch plate; 2143. an end face touch panel; 22. a mounting frame; 23. a blanking unit; 231. a biomass bunker; 232. a material mixing machine; 233. a chemical raw material bin; 234. a first blanking pipe; 24. a material conveying unit; 241. a delivery pipe; 242. a screw feeder; 25. a blanking pipe group; 251. a discharging pipe; 252. a second blanking pipe; 26. a boiler combustion chamber.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.

Referring to fig. 1, a preferred embodiment of the present invention provides a stokehold feeding system comprising: prop up the mounting bracket 22 of locating on ground, be equipped with unloading unit 23 and defeated material unit 24 on the mounting bracket 22, unloading unit 23 is used for the unloading and stirs the material of transferring, and defeated material unit 24 is connected in unloading unit 23's output to be used for the material forward propelling movement by unloading unit 23 output. The output end of the material conveying unit 24 is connected with a discharging pipe group 25, the discharging end of the discharging pipe group 25 is communicated with the boiler combustion chamber 26 to be used for discharging the materials pushed by the material conveying unit 24 to the boiler combustion chamber 26, and a discharging valve 21 is arranged in the pipeline of the discharging pipe group 25 to prevent the smoke and flame in the boiler combustion chamber 26 from being emitted outside by the discharging unit 23 after passing through the discharging pipe group 25 and the material conveying unit 24 during discharging.

When the stokehole feeding system works, firstly, materials formed by biomass fuels and chemical raw materials are fed and fully stirred by the feeding unit 23, the materials which are fed and stirred by the feeding unit 23 enter the material conveying unit 24, the material conveying unit 24 pushes the materials towards the direction close to the boiler combustion chamber 26, the materials conveyed by the material conveying unit 24 enter the feeding pipe group 25, and finally enter the boiler combustion chamber 26 through the feeding pipe group 25, the stokehole feeding system is simple in operation, and the discharge valve 21 is arranged in the pipeline of the feeding pipe group 25, so that smoke, flame, ash and the like in the boiler combustion chamber 26 can be effectively prevented from reversely overflowing through the feeding pipe group 25 and the material conveying unit 24, the problems of outward smoke spraying, fire spraying and the like at a feed inlet in the prior art are solved, the discharging smoothness can be ensured, and the generating capacity of a generating set is improved, the generating set is increased by about 3000 kilowatt generating capacity per hour, and the danger during working and the pollution to the working environment are effectively reduced.

Alternatively, as shown in fig. 1, the blanking unit 23 includes a biomass bunker 231 for lowering the biomass fuel, and a mixer 232 for stirring the lowered biomass fuel. The biomass fuel bin 231 is vertically erected on the mounting frame 22, and the feeding end of the biomass fuel bin 231 faces upwards and the discharging end faces downwards. The mixer 232 is erected on the mounting frame 22, a feed end of the mixer 232 is communicated with a discharge end of the biomass fuel bin 231, and a discharge end of the mixer 232 is communicated with the material conveying unit 24. In this alternative, because biomass fuel includes old and useless plank, house panel, straw, reed, chaff, coconut husk, bark etc. so need set up the mixer and at first stir the biomass fuel of transfer evenly to follow-up unobstructed, the not obstructed forward transport and the propelling movement of ability, the quantity of mixer 232 can be many, and specific quantity can be decided according to the composition of actual biomass fuel.

Further, as shown in fig. 1, the blanking unit 23 further includes a chemical raw material bin 233 for blanking the chemical raw material for performing desulfurization treatment on the biomass fuel, and a first blanking pipe 234 for conveying the lowered chemical raw material. The chemical material bin 233 is erected on the mounting frame 22, and the feeding end and the discharging end of the chemical material bin 233 face upward and downward respectively. The first blanking pipe 234 is erected on the mounting frame 22, a feeding end of the first blanking pipe 234 is communicated with a discharging end of the chemical raw material bin 233, and a discharging end of the first blanking pipe 234 is communicated with the material conveying unit 24. In this alternative, the chemical feedstock is typically lime used to desulfurize the biomass fuel. In this alternative, the chemical raw material bin 233 and the biomass fuel bin 231 are arranged side by side, and the first blanking pipe 234 is arranged obliquely, so as to reduce the blanking speed and blanking amount of lime and avoid dust emission and blockage in the material conveying unit 24.

Alternatively, as shown in fig. 1, the conveyor unit 24 comprises a conveyor pipe 241 for conveying the material, and a screw feeder 242 for pushing the material forward along the conveyor pipe 241. The feeding pipe 241 is erected on the mounting frame 22, and the discharge end of the mixer 232 and the discharge end of the first blanking pipe 234 are respectively communicated with the feeding pipe 241. The screw feeder 242 is mounted on the mounting frame 22 and extends into the feeding pipe 241 from the feeding end of the feeding pipe 241. In operation, the screw feeder 242 is actuated to push the material in the feed pipe 241 forward along the length of the feed pipe 241.

In this alternative, the feed conveyor 241 is arranged in a horizontal direction, as shown in FIG. 1. The first blanking pipe 234 and the material mixer 232 are sequentially communicated with the material conveying pipe 241 along the material conveying direction. The screw feeder 242 is disposed at the feeding end of the feeding pipe 241, the power part of the screw feeder 242 is located on the mounting frame 22, and the screw driving part of the screw feeder 242 axially extends into the feeding pipe 241 from the feeding end of the feeding pipe 241. The screw feeder 242 includes a screw feeding rod and a driving motor connected to the screw feeding rod and used for driving the screw feeding rod to rotate so as to push the material forward.

Alternatively, as shown in fig. 1, the blanking tube set 25 includes a blanking tube 251 for lowering the material, and a second blanking tube 252 for introducing the lowered material into the boiler combustion chamber 26. The feeding end of the discharging pipe 251 is communicated with the discharging end of the material conveying pipe 241. The feeding end of the second blanking pipe 252 is communicated with the discharging end of the blanking pipe 251, and the discharging end of the second blanking pipe 252 extends into the boiler combustion chamber 26. The discharge valve 21 is disposed in the pipeline of the blanking pipe 251 and adjacent to the second blanking pipe 252. In the alternative, the blanking pipe 251 is vertically arranged, so that the material in the conveying pipe 241 can be smoothly blanked into the blanking pipe 251; second blanking pipe 252 is laid in the below of blanking pipe 251, and second blanking pipe 252 slope is laid, the pipeline of laying through the slope on the one hand, can effectively reduce the flue gas in the boiler combustion chamber 26, flame, the entering second blanking pipe 252 such as raise dust, on the other hand can be used for reducing the speed that the material was transferred to in the boiler combustion chamber 26, avoid the material to transfer too much, pile up in the boiler combustion chamber 26 when too fast, and then lead to the burning insufficient, the flue gas is heavy, the burning produces the heat and hangs down, the wasting of resources is serious.

Alternatively, as shown in fig. 1-3, the discharge valve includes an outer housing 211 having an installation cavity, the outer housing 211 is provided with a feed port 2111 and a discharge port 2112 respectively communicated with the installation cavity, and the feed port 2111 and the discharge port 2112 are respectively communicated with the blanking pipe 251. The mounting inner cavity is provided with a rotatably arranged mounting rotating shaft 212, and the mounting rotating shaft 212 is connected with a driving member 213 for driving the mounting rotating shaft to rotate. The installation rotating shaft 212 is provided with a plurality of groups of partition plate groups 214 which are sequentially arranged at intervals along the circumferential direction of the installation rotating shaft, the plurality of groups of partition plate groups 214 are used for dividing the installation inner cavity into a plurality of material guide cavities 2113 which are sequentially arranged along the circumferential direction of the installation rotating shaft 212, the material guide cavities 2113 are alternately communicated with the material inlet 2111 and the material outlet 2112 under the rotation action of the installation rotating shaft 212 so as to guide the fuel received by the material inlet 2111 to the material outlet 2112 for blanking, and the partition plate groups 214 are in soft abutting joint with the wall surface of the installation inner cavity so that the material guide cavities 2113 form closed.

When the discharge valve works, the driving member 213 drives the mounting rotating shaft 212 to rotate, the mounting rotating shaft 212 enables a plurality of material guiding cavities 2113 separated by a plurality of groups of partition plate groups 214 to rotate along with the mounting rotating shaft 212, so that the material guiding cavities 2113 are alternately communicated with a material inlet 2111 and a material outlet 2112 on the outer shell 211, fuel conveyed to the material inlet 2111 by the material conveying pipe 241 firstly enters the material guiding cavity 2113 at a corresponding position from the material inlet 2111, then the material guiding cavity 2113 rotates to the material outlet 2112 under the driving of the mounting rotating shaft 212, and the fuel in the material guiding cavity 2113 enters the boiler combustion chamber 26 from the material outlet 2112, so that the fuel is conveyed from the material inlet 2111 to the material outlet 2112, and the fuel is divided, separated and sequentially and continuously conveyed through the arrangement of the plurality of the rotating material guiding cavities 2113. The partition plate group 214 is in soft butt joint with the wall surface of the installation inner cavity, so that the material guide cavity 2113 forms a closed cavity, the situation that fuel is easily clamped in the gap and then the fuel in the discharge valve is clamped and blocked in the gap due to the existence of the gap between the rotating blade and the outer shell in the prior art can be effectively prevented, the feeding is smooth, the feeding is uniform and continuous, the feeding efficiency and the feeding quality are improved, the working condition of the discharge valve is improved, the service life of the discharge valve is prolonged, the blockage is cleared without frequent halt, the labor intensity of operators is reduced, and time and labor are saved.

Alternatively, as shown in fig. 2 and 3, the outer housing 211 has a hollow cylindrical shape with both ends closed. The installation rotating shaft 212 is arranged along the axial direction of the outer shell 211, two ends of the installation rotating shaft 212 are rotatably supported on end plates at two ends of the outer shell 211, and a driving end of the installation rotating shaft 212 extends out of the end plate at the corresponding side and then is connected with the driving member 213. In this alternative, the driving member 213 includes a driving motor and a speed reducer connected to an output shaft of the driving motor, and the driving end of the mounting shaft 212 is connected to an output shaft of the speed reducer. The partition plate groups 214 are uniformly arranged at intervals along the circumferential direction of the mounting rotating shaft 212, and the partition plate groups 214 are respectively in soft abutment with the inner annular wall of the outer shell 211 and the inner side walls of the two end plates; since the partition plate groups 214 are uniformly arranged along the circumferential direction of the installation rotating shaft 212 at intervals, the guide cavities 2113 are uniformly arranged along the circumferential direction of the installation rotating shaft 212, and the fuel is uniformly conveyed, so that the situation that the fuel is jammed in the discharge valve 21 due to the uneven distribution of the guide cavities 2113 is prevented.

In this alternative, the partition plate group 214 includes partition plates 2141, and circumferential contact plate members. In the first embodiment of the partition plate group, as shown in fig. 2 and fig. 3, the partition plates 2141 are arranged along the axial direction of the mounting rotating shaft 212, a first lateral side of the partition plates 2141 in the width direction is fixed to the outer circumferential surface of the mounting rotating shaft 212, and a second lateral side of the partition plates 2141 in the width direction extends toward the inner circumferential surface of the outer housing 211 in the radial direction. The circumferential contact plate is detachably connected to the second side of the partition plate 2141 along the length direction of the partition plate 2141, and the circumferential contact plate is in soft abutment with the inner annular surface of the outer housing 211. In this embodiment, since the partition plate 2141 is disposed along the axial direction of the mounting rotating shaft 212, when each guide cavity 2113 rotates to communicate with the discharge port 2112, the fuel contained therein falls into the discharge port 2112 synchronously, and the discharge speed of the fuel is increased.

In this alternative embodiment, not shown, a first side of the partition plate 2141 in the width direction intersects with the outer circular surface of the mounting rotating shaft 212 in a spiral line, and a second side of the partition plate 2141 in the width direction extends toward the inner circular surface of the outer housing 211. The circumferential contact plate is detachably connected to the second side edge of the separation plate 2141 in the width direction along the length direction of the separation plate 2141, and the circumferential contact plate is in soft abutment with the inner annular surface of the outer housing 211. In this embodiment, since the first side edge of the partition plate 2141 in the width direction intersects with the outer circle surface of the mounting rotating shaft 212 in a spiral line, each guide cavity 2113 is gradually communicated with the discharge port 2112 in the rotating process, so that the fuel contained therein gradually falls into the discharge port 2112, the discharge speed of the fuel is slowed down, the uniformity of fuel discharge is improved, and the fuel discharge jamming can be effectively prevented.

Optionally, in the first and second embodiments of the partition plate group, the first embodiment of the circumferential contact plate member, as shown in fig. 3, the circumferential contact plate member includes a circumferential contact plate 2142, and the circumferential contact plate 2142 is connected to a front vertical surface of the partition plate 2141 facing the rotation direction, in this scheme, the circumferential contact plate 2142 has a good sealing contact condition with the inner annular surface of the outer housing 211, which can not only effectively prevent the fuel from being stuck in the discharge valve 21, but also effectively prevent the flue gas in the boiler combustion chamber from passing through the discharge port 2112 and the feed port 2111 in sequence and then flowing out. Or

Optionally, in the first and second embodiments of the partition plate assembly, the second embodiment of the circumferential contact plate assembly is not shown, the circumferential contact plate assembly includes two circumferential contact plates 2142, the two circumferential contact plates 2142 are respectively disposed on two sides of the partition plate 2141, and an abutting edge of at least one circumferential contact plate 2142, which abuts against the inner annular wall of the outer housing 211, is a brush edge, that is, the abutting edge of the circumferential contact plate 2142, which abuts against the inner annular wall of the outer housing 211, is a brush-shaped edge formed by shearing, which extends along the length direction, so that on the premise of ensuring the sealing performance of the material guiding cavity 2113, friction between the abutting edge and the inner annular surface of the outer housing 211 is reduced, and thus the service life of the discharge valve is prolonged, and the installation rotating shaft 212 can run stably.

Further, in the first and second embodiments of the partition plate group, the partition plate group 214 further includes two end surface contact plates respectively disposed at both ends of the partition plate 2141 in the length direction. The end face touch panel is detachably connected to the end face corresponding to the partition plate 2141 along the width direction of the partition plate 2141, the end face touch panel is in soft abutting connection with the inner side wall of the end plate on the corresponding side of the outer shell 211, the effect and the use condition of the end face touch panel are similar to those of the circumferential touch panel, and the description is omitted.

Preferably, the circumferential contact plates 2142 located on the same side of the partition plate 2141 and the two end face contact plates are connected to form an integral structure, so that the stability of the integral structure of the partition plate assembly is enhanced, and the partition plate assembly is driven by the installation rotating shaft 212 to operate stably and is not easy to loosen.

In the preferred scheme, the circumferential touch plate 2142 and the end face touch plate are made of flame-retardant rubber belts made of flame-retardant materials, so that the materials are simple to obtain, the materials are easy to prepare and mold, the operation cost is low, and the replacement is convenient. In the embodiment of the preferred embodiment, the circumferential contact plate 2142 and the end face contact plate are detachably fixed to the partition plate 2141 by locking screws or locking bolts, respectively.

Preferably, a wear-resistant layer for wear resistance is paved on the wall surface of the installation inner cavity, or a wear-resistant coating for wear resistance is coated on the wall surface of the installation inner cavity. In this preferred scheme, wearing layer or wear-resisting coating are among the prior art conventional be used for wear-resisting material, set up wearing layer or wear-resisting coating on the wall of installation inner chamber, can effectively slow down the friction of division board group and installation inner chamber wall, and then improve discharge valve's life to improve the in service behavior.

Preferably, as shown in fig. 3, the outer housing 211 is further provided with an operation port 2114 communicating with the installation cavity, a blocking cover for blocking the operation port 2114 is provided at the operation port 2114, and the operation port 2114 is convenient for an operator to manipulate a slender rod to be inserted into the outer housing 211 so as to solve a fuel jam condition possibly existing in the installation cavity.

Alternatively, as shown in fig. 2, the inlet 2111 and the outlet 2112 are disposed on the outer annular wall of the outer housing 211, and the inlet 2111 is located on the upper side of the outer housing 211 and the outlet 2112 is located on the lower side of the outer housing 211. The feed port 2111 is an inverted cone-shaped port with the caliber gradually increasing along the feeding direction, so that the fuel in the guide cavity 2113 is prevented from reversely flowing out of the feed port 2111 under the mutual pushing action. The discharge port 2112 is a tapered port with a gradually reduced caliber along the discharge direction, so that the fuel in the guide chamber 2113 smoothly falls into the boiler combustion chamber 26.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A stokehold feed system, comprising:

the device comprises a mounting rack (22) arranged on the ground, wherein a blanking unit (23) and a material conveying unit (24) are arranged on the mounting rack (22), the blanking unit (23) is used for blanking and stirring the lowered material, and the material conveying unit (24) is connected to the output end of the blanking unit (23) and used for pushing the material output by the blanking unit (23) forwards;

the output of defeated material unit 24 is connected with unloading nest of tubes (25), the discharge end and the boiler combustion chamber (26) intercommunication of unloading nest of tubes (25) for will by the material unloading of defeated material unit (24) propelling movement extremely boiler combustion chamber (26), just be equipped with discharge valve (21) in the pipeline of unloading nest of tubes (25), in order to be used for preventing the unloading flue gas and flame in boiler combustion chamber (26) pass through unloading nest of tubes (25) with behind defeated material unit (24) by unloading unit (23) emits outward.

2. The stokehole feed system of claim 1,

the blanking unit (23) comprises a biomass fuel bin for placing biomass fuel downwards and a mixer (232) for stirring the placed biomass fuel;

the biomass fuel bin (231) is vertically erected on the mounting rack (22), and the feed end of the biomass fuel bin (231) faces upwards and the discharge end of the biomass fuel bin faces downwards;

the mixer (232) is erected on the mounting frame (22), the feed end of the mixer is communicated with the discharge end of the biomass fuel bin (231), and the discharge end of the mixer is communicated with the material conveying unit (24).

3. Stokehole feed system according to claim 2,

the blanking unit (23) also comprises a chemical raw material bin (233) used for blanking chemical raw materials for desulfurization treatment of biomass fuel and a first blanking pipe (234) used for conveying the lowered chemical raw materials;

the chemical raw material bin (233) is erected on the mounting frame (22), and the feeding end of the chemical raw material bin (233) faces upwards and the discharging end of the chemical raw material bin faces downwards;

the first blanking pipe (234) is erected on the mounting frame (22), the feeding end of the first blanking pipe (234) is communicated with the discharging end of the chemical raw material bin (233), and the discharging end of the first blanking pipe (234) is communicated with the material conveying unit 24.

4. Stokehole feed system according to claim 3,

the material conveying unit (24) comprises a material conveying pipe (241) for conveying materials and a screw feeder (242) for pushing the materials forwards along the material conveying pipe (241);

the conveying pipe (241) is erected on the mounting frame (22), and the discharge end of the material mixer (232) and the discharge end of the first blanking pipe (234) are respectively communicated with the conveying pipe (241);

the screw feeder (242) is erected on the mounting frame (22) and extends into the conveying pipe (241) from the feeding end of the conveying pipe (241).

5. Stokehole feed system according to claim 4,

the material conveying pipes (241) are arranged along the horizontal direction;

the first blanking pipe (234) and the material mixer (232) are sequentially communicated with the material conveying pipe (241) along the material conveying direction;

the screw feeder (242) is arranged at the feed end of the feed delivery pipe (241), the power part of the screw feeder (242) is located on the mounting frame (22), and the screw driving part of the screw feeder (242) axially extends into the feed delivery pipe (241) from the feed end of the feed delivery pipe (241).

6. Stokehole feed system according to claim 4,

the blanking pipe group (25) comprises a blanking pipe (251) for lowering materials and a second blanking pipe (252) for guiding the lowered materials into the boiler combustion chamber (26);

the feeding end of the discharging pipe (251) is communicated with the discharging end of the material conveying pipe (241);

the feeding end of the second blanking pipe (252) is communicated with the discharging end of the blanking pipe (251), and the discharging end of the second blanking pipe (252) extends into the boiler combustion chamber (26);

the discharge valve (21) is arranged in the pipeline of the blanking pipe (251) and is close to the second blanking pipe (252).

7. The stokehole feed system of claim 6,

the discharge valve comprises an outer shell (211) with an installation inner cavity, a feed inlet (2111) and a discharge outlet (2112) which are respectively communicated with the installation inner cavity are arranged on the outer shell (211), and the feed inlet (2111) and the discharge outlet (2112) are respectively communicated with the discharge pipe (251);

a mounting rotating shaft (212) which is rotatably arranged is arranged in the mounting inner cavity, and the mounting rotating shaft (212) is connected with a driving member (213) for driving the mounting rotating shaft to rotate;

the installation pivot (212) facial make-up is equipped with along its circumference multiunit division board group (214) that the interval was laid in proper order, and multiunit division board group (214) are used for with the installation inner chamber is separated into along a plurality of guide chamber (2113) that the circumference of installation pivot (212) laid in proper order, guide chamber (2113) be in under the rotatory effect of installation pivot (212) with feed inlet (2111) with discharge gate (2112) intercommunication in turn to with by the fuel guide that feed inlet (2111) connects greatly to discharge gate (2112) unloading, just division board group (214) with the soft butt of wall of installation inner chamber, so that guide chamber (2113) forms the closed chamber.

8. The stokehole feed system of claim 7,

the outer shell (211) is in a hollow shaft cylinder shape with two closed ends;

the installation rotating shaft (212) is arranged along the axial direction of the outer shell (211), two ends of the installation rotating shaft (212) are rotatably supported on end plates at two ends of the outer shell (211), and a driving end of the installation rotating shaft (212) extends out of the end plate at the corresponding side and then is connected with the driving component (213);

the partition plate groups (214) are uniformly distributed at intervals along the circumferential direction of the mounting rotating shaft (212), and the partition plate groups (214) are respectively in soft abutting joint with the inner annular wall of the outer shell (211) and the inner side walls of the two end plates.

9. The stokehole feed system of claim 8,

the partition plate group (214) comprises a partition plate (2141) and a circumferential contact plate part;

the partition plate (2141) is axially arranged along the mounting rotating shaft (212), a first side edge of the partition plate (2141) in the width direction is fixed with an outer circular surface of the mounting rotating shaft (212), a second side edge of the partition plate (2141) in the width direction extends towards an inner circular surface of the outer shell (211) in the radial direction, the circumferential contact plate is detachably connected to a second side edge of the partition plate (2141) in the length direction of the partition plate (2141), and the circumferential contact plate is in soft abutting joint with the inner circular surface of the outer shell (211); or

Division board (2141) along width direction's first side with the excircle of installation pivot (212) is the helix and intersects, division board (2141) along width direction's second side court the interior anchor ring of shell body (211) extends, circumference touches the plate and follows the length direction detachable of division board (2141) connect in on the second side of division board (2141), just circumference touch the plate with the soft butt of interior anchor ring of shell body (211)

10. The stokehole feed system of claim 9,

the circumferential contact plate piece comprises a circumferential contact plate (2142), and the circumferential contact plate (2142) is connected to the front elevation of the partition plate (2141) towards the rotating direction; or

The circumference touch panel spare includes two circumference touch panels (2142), two circumference touch panel (2142) branch is located the both sides of division board (2141), and at least one circumference touch panel (2142) go up with the butt limit of the interior rampart butt of shell body (211) is the brush limit.