CN114811658B

CN114811658B - Fuel supply device

Info

Publication number: CN114811658B
Application number: CN202210509732.8A
Authority: CN
Inventors: 席文雄; 马凯; 刘建; 张正泽; 杨燕京
Original assignee: Central South University
Current assignee: Central South University
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2023-03-31
Anticipated expiration: 2042-05-11
Also published as: CN114811658A

Abstract

The application discloses fuel supply device includes: a rotating shaft; the grinding wheel is sleeved on the outer side of the rotating shaft and is coaxially and fixedly connected with the rotating shaft; the shell is sleeved on the outer side of the grinding wheel and is in rotary connection with the rotating shaft, and a fluidization cavity is formed between the shell and the grinding wheel; a grain cavity arranged at the outer side of the shell, communicated with the fluidization cavity and used for accommodating grains; the feeding assembly is used for pushing the explosive column to move along the radial direction of the explosive column cavity, so that the head end surface of the explosive column is always abutted against the processing surface of the grinding wheel; an air outlet arranged at one end of the shell and communicated with the fluidization cavity; and the flow guide assembly is used for inputting fluidization gas into the fluidization cavity so that the powder fuel in the fluidization cavity flows towards the gas outlet. Compared with the prior art, the fuel supply device can realize continuous and stable supply of the powdered fuel.

Description

Fuel supply device

Technical Field

The application relates to the technical field of aerospace, in particular to a fuel supply device.

Background

The powder fuel ramjet adopts high-energy metal or boron powder as fuel, has the advantages of adjustable thrust and high specific impulse of a liquid fuel ramjet, safety and reliability of a solid rocket ramjet, simple structure and the like, particularly the addition of the powder fuel into the solid/powder or liquid/powder fuel combined ramjet can greatly improve the specific impulse and other performances of the traditional ramjet, can improve and increase the original functions of the traditional ramjet, and is one of new-generation missile power devices with great development potential.

The powder fuel ramjet engine uses high-energy solid powder (aluminum, magnesium, boron, carbon and the like) as fuel and ram air as oxidant and working medium, and the main components of the powder fuel ramjet engine are powder fuel, a storage tank, a fuel supply system, an air inlet channel, a pre-combustion chamber, a combustion chamber, an ignition device and a spray pipe. The pulverized fuel is fluidized by the pulverized fuel supply system and then enters the precombustion chamber and the combustion chamber to be in combustion reaction with the ram air, and finally, the combustion products are sprayed out from the spray pipe to generate thrust.

The supply of the powder fuel is the key for realizing stable combustion and thrust adjustment of the powder fuel ramjet, in the prior art, the powder is usually filled in a fuel storage tank, fluidizing gas is introduced from a piston rod, enters a powder bed body through an air distribution plate on the surface of a piston and carries the powder to be sprayed out from an outlet, and the piston compresses the powder in the storage tank under the action of the air pressure of the other path. The small holes uniformly distributed on the surface of the piston can uniformly disperse the gas-solid mixture and prevent the powder from flowing back. However, this embodiment cannot achieve continuous and stable supply of the pulverized fuel.

Therefore, a fuel supply device is needed to realize continuous and stable supply of the pulverized fuel.

Disclosure of Invention

In order to solve the above-mentioned technical problem, the present application provides a fuel supply device capable of continuously and stably supplying a pulverized fuel.

The technical scheme provided by the application is as follows:

a fuel supply apparatus comprising:

a rotating shaft;

the grinding wheel is sleeved on the outer side of the rotating shaft and is coaxially and fixedly connected with the rotating shaft;

the shell is sleeved on the outer side of the grinding wheel and is in rotary connection with the rotating shaft, and a fluidization cavity is formed between the shell and the grinding wheel;

a grain chamber arranged outside the housing, communicated with the fluidization chamber, and used for accommodating grains;

the feeding assembly is used for pushing the explosive column to move along the radial direction of the explosive column cavity so that the surface of the head end of the explosive column is always abutted against the machining surface of the grinding wheel;

the gas outlet is arranged at one end of the shell and is communicated with the fluidization cavity;

and the flow guide assembly is used for inputting fluidization gas into the fluidization cavity so that the powder fuel in the fluidization cavity flows towards the gas outlet.

Preferably, the first and second electrodes are formed of a metal,

the powder column cavity is at least provided with two groups, and the powder column cavity winds the circumferential interval of the grinding wheel.

Preferably, the first and second liquid crystal display panels are,

the grinding wheel comprises:

the wheel body is fixedly connected with the rotating shaft;

the grinding body is arranged on the outer circumferential surface of the wheel body, the machining surface is that the grinding body is far away from the circumferential surface of the rotating shaft, and the distances from all places of the machining surface to the center line of the rotating shaft are equal.

Preferably, the first and second liquid crystal display panels are,

the grinding body is specifically a helical blade.

Preferably, the first and second electrodes are formed of a metal,

the feed assembly, comprising:

the blocking cover is fixedly and hermetically connected with one end of the grain cavity far away from the shell;

the piston disc is connected with the inner wall of the medicine column cavity in a sliding and sealing mode, and a sealed pressure cavity is formed between the piston disc and the blocking cover;

the high-pressure gas enters the pressure cavity through the air inlet nozzle, and pushes the head end surface of the grain to be always abutted to the processing surface of the grinding wheel.

Preferably, the first and second electrodes are formed of a metal,

the water conservancy diversion subassembly includes:

the first air inlet is arranged on one side of the shell, which is far away from the air outlet, and is communicated with the fluidization cavity;

and the fluidizing gas enters the fluidizing cavity through the first gas inlet to drive the fuel powder in the fluidizing cavity to flow towards the gas outlet.

Preferably, the first and second electrodes are formed of a metal,

further comprising:

the support assembly is arranged in the fluidization cavity and close to one side of the air outlet;

and a filter screen for filtering fuel powder is arranged on the supporting component.

Preferably, the first and second electrodes are formed of a metal,

the support assembly, includes:

the support part is of a cylindrical structure, a through hole connected with the air outlet is formed in one end of the support part, and an end face fixedly connected with the shell is arranged at one end, far away from the through hole, of the support part; and a closed air cavity is formed among the outer wall of the supporting piece, the shell and the end face, and the filter screen is fixedly connected with the inner wall of the supporting piece.

Preferably, the first and second electrodes are formed of a metal,

the water conservancy diversion subassembly still includes:

the second air inlet is arranged on the shell and is communicated with the closed air cavity and the fluidized air source;

and the guide holes are arranged on the end surface and used for communicating the closed air cavity with the fluidization cavity, a plurality of groups of guide holes are arranged, and the guide holes are uniformly distributed in the circumferential direction of the center line of the shell in a surrounding manner.

Preferably, the method further comprises the following steps:

the setting is in the shell is kept away from the one end of gas outlet, with the shell rotates the driving piece of connecting, the output of driving piece with the pivot links to each other, drives the pivot axial is rotated.

Preferably, said drive is in particular a pneumatic motor;

and the air outlet end of the pneumatic motor is connected with the first air inlet and the second air inlet through air pipes.

The invention provides a fuel supply device, which comprises a rotating shaft, a grinding wheel, a fluidizing cavity, a grain cavity and a feeding assembly, wherein the grinding wheel is coaxially and fixedly connected with the rotating shaft, a shell is sleeved outside the grinding wheel and is rotationally connected with the rotating shaft, the fluidizing cavity is formed between the shell and the grinding wheel, the grain cavity is arranged outside the shell and is communicated with the fluidizing cavity, the grain cavity is used for accommodating grains, the feeding assembly is used for pushing the grains to move along the radial direction of the grain cavity, so that the head end surface of the grains is always abutted against the processing surface of the grinding wheel, the rotating shaft drives the grinding wheel to rotate axially, the surface of the head end of the grains is ground by the processing surface of the grinding wheel, the grain fuel is processed into powder fuel, under the action of the feeding assembly, the surface of the head end of the grains is contacted with the processing surface until the grains are processed, the grain fuel is formed by pressing because the grain fuel (containing various high-energy metal powder), the grain fuel can be peeled off from the grains under the high-speed grinding of the grinding wheel to form a grain state, on the one hand, the grain cavity is convenient for transporting the grains, and on the other hand, the grain cavity is further arranged in the side of the fluidizing cavity, so that the adhesive space of the adhesive can be further improve the utilization rate of the adhesive. And secondly, because the powder fuel after the grain fuel is stripped into a powder state is easy to deposit on the processing surface of the grinding wheel under the action of gravity, in order to avoid the deposition of the powder fuel, the grinding wheel is also provided with an air outlet and a flow guide assembly, wherein the air outlet is arranged at one end of the shell, the air outlet is communicated with a fuel inlet of the ramjet, and the flow guide assembly is used for feeding fluidization gas into the fluidization cavity to drive the powder fuel in the fluidization cavity to flow towards the air outlet. On the one hand, through setting up the water conservancy diversion subassembly, can in time sweep the powder fuel of fluidization intracavity, prevent that powder fuel's part from piling up, on the other hand, through the water conservancy diversion subassembly, can take away the processing heat of the in-process that cuts the mill, prevent that fuel powder from producing the phenomenon of reuniting and sintering under high temperature, realize powder fuel's continuity, stable supply. Therefore, compared with the prior art, the fuel supply device provided by the invention can realize continuous and stable supply of the pulverized fuel.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a first structural schematic diagram of a fuel supply apparatus provided in an embodiment of the present invention;

FIG. 2 is a perspective view of FIG. 1;

FIG. 3 is a schematic structural diagram of a first intake port according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a second structure of a fuel supply apparatus according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a fuel supply apparatus provided in an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a second air inlet provided in accordance with an embodiment of the present invention;

FIG. 7 is a schematic structural view of a third fuel supply apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic left side view diagram according to an embodiment of the present invention;

fig. 9 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A of fig. 8 according to an embodiment of the present invention.

Reference numerals: 1. a rotating shaft; 2. grinding the wheel; 3. a housing; 4. a fluidization chamber; 5. a drug column cavity; 51. the grain fuel; 6. a feeding assembly; 31. an air outlet; 7. a flow guide assembly; 11. a drive member; 21. a wheel body; 22. grinding the body; 24. a third air inlet; 25. an air tube; 61. blocking the cover; 62. a piston disc; 63. a pressure chamber; 64. an air inlet nozzle; 71. a first air inlet; 711. a fluidization gas distribution plate; 712. distributing air holes; 9. a filter screen; 82. a support member; 821. a through hole; 822. an end face; 823. sealing the air cavity; 72. a second air inlet; 73. and (4) flow guide holes.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It will be understood that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings to facilitate the description of the application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be constructed in operation as a limitation of the application.

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 to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of a plurality, or a plurality, is two or more unless explicitly specifically limited otherwise.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.

The embodiments of the present invention are written in a progressive manner.

As shown in fig. 1 to 9, an embodiment of the present invention provides a fuel supply device, including: a rotating shaft 1; the grinding wheel 2 is sleeved on the outer side of the rotating shaft 1 and is coaxially and fixedly connected with the rotating shaft 1; the shell 3 is sleeved on the outer side of the grinding wheel 2 and is rotationally connected with the rotating shaft 1, and a fluidization cavity 4 is formed between the shell 3 and the grinding wheel 2; a grain chamber 5 which is arranged outside the housing 3, is communicated with the fluidization chamber 4 and is used for containing grain fuel 51; the feeding assembly 6 is used for pushing the grain fuel to move along the radial direction of the grain cavity 5, so that the head end surface of the grain fuel 51 is always abutted with the processing surface of the grinding wheel 2; an air outlet 31 provided at one end of the housing 3 and communicating with the fluidizing chamber 4; and the flow guide assembly 7 is used for inputting fluidization gas into the fluidization cavity 4 so that the pulverized fuel in the fluidization cavity 4 flows towards the gas outlet 31.

In the embodiment of the present invention, the "grain fuel" is formed by pressing high-energy fuel (containing various high-energy metal powders) with a binder, and can be peeled off from the grain fuel by high-speed cutting and grinding of the grinding wheel 2 to form powder fuel.

The "fluidizing gas" in the embodiment of the present invention may be a combustion inert gas such as nitrogen, argon, or the like, or may be a combustible gas such as methane, ethylene, or the like.

The fuel supply device provided by the invention is characterized in that firstly, a rotating shaft 1, a grinding wheel 2, a fluidizing cavity 4, a cartridge cavity 5 and a feeding assembly 6 are arranged, wherein the grinding wheel 2 is coaxially and fixedly connected with the rotating shaft 1, a shell 3 is sleeved on the outer side of the grinding wheel 2, the shell 3 is rotatably connected with the rotating shaft 1, the fluidizing cavity 4 is formed between the shell 3 and the grinding wheel 2, the cartridge cavity 5 is arranged on the outer side of the shell 3, the cartridge cavity 5 is communicated with the fluidizing cavity 4 and is used for accommodating the cartridge fuel 51 through the cartridge cavity 5, the feeding assembly 6 is used for pushing the cartridge fuel 51 to move along the radial direction of the cartridge cavity 5, so that the head end surface of the cartridge fuel 51 is always abutted against the processing surface of the grinding wheel 2, the rotating shaft 1 drives the grinding wheel 2 to rotate axially, the surface of the head end of the cartridge fuel 51 is ground through the processing surface of the grinding wheel 2, the cartridge fuel is processed into powder fuel, under the action of the feeding assembly 6, the head end surface of the cartridge fuel 51 is used to be contacted with the processing surface until the cartridge fuel is processed, and the cartridge is a high-energy fuel-containing space (containing high-powder particles) which can be further formed by the high-grinding wheel 2 and can be further transported to form a high-powder grinding-powder grinding chamber 4. Secondly, as the pulverized fuel after the grain fuel is stripped into a powder state is easy to deposit on the processing surface of the grinding wheel 2 under the action of gravity, in order to avoid the deposition of the pulverized fuel, the invention is also provided with an air outlet 31 and a flow guide assembly 7, wherein the air outlet 31 is arranged at one end of the shell 3, the air outlet 31 is used for communicating the fluidizing chamber 4 with a ramjet engine, and the flow guide assembly 7 is used for inputting fluidizing gas into the fluidizing chamber 4 to drive the pulverized fuel in the fluidizing chamber 4 to flow towards the air outlet 31. On the one hand, through setting up water conservancy diversion subassembly 7, can in time sweep the pulverized fuel in the fluidization chamber 4, prevent pulverized fuel's local piling up, on the other hand, through water conservancy diversion subassembly 7, can take away the processing heat of the in-process that cuts the mill, prevent that fuel powder from producing the phenomenon of reunion and sintering under high temperature, realize pulverized fuel's continuation, stable supply. Therefore, compared with the prior art, the fuel supply device provided by the invention can realize continuous and stable supply of the pulverized fuel.

In the above structure, as a more preferable embodiment, at least two groups of the grain cavities 5 are provided in the embodiment of the present invention, and the grain cavities 5 are arranged at intervals around the circumference of the grinding wheel 2, so that the grinding wheel 2 can simultaneously cut and grind a plurality of groups of grains in the rotating process, thereby further increasing the processing efficiency of the pulverized fuel.

In the structure, as a more preferable embodiment, the connection between the grain cavity 5 and the housing 3 in the embodiment of the present invention is a detachable sealing connection, which facilitates the supplement and replacement of the grain in the grain cavity 5, facilitates the maintenance and inspection of the wear condition of the machining surface of the grinding wheel 2, and facilitates the timely replacement of the grinding wheel 2, and in order to prevent air leakage, a sealing element is disposed between the grain cavity 5 and the housing 3 in the embodiment of the present invention, so that the sealing performance is better.

In the above structure, as a more preferable implementation manner, the grinding wheel 2 in the fuel supply device according to the embodiment of the present invention includes a wheel body 21 and a grinding body 22, wherein the wheel body 21 is fixedly connected to the rotating shaft 1, the grinding body 22 is disposed on an outer surface of the wheel body 21, the machining surface is specifically a circumferential surface of the grinding body 22 away from the rotating shaft 1, distances from each part of the machining surface to an axis of the rotating shaft 1 are equal, and linear velocities of each part of the machining surface are equal when the rotating shaft 1 drives the grinding body 22 to rotate, so that the surface of the head end of the grain pillar is uniformly stressed when being machined by the grinding body 22, and uniformity of sizes of the powder fuel particles can be ensured.

In the above structure, as a more preferable implementation manner, the feeding assembly 6 in the embodiment of the present invention includes a blocking cover 61, a piston disc 62 and a gas inlet nozzle 64, wherein the blocking cover 61 is disposed at one end of the grain chamber 5 far from the housing 3, and the blocking cover 61 is fixedly connected with the grain chamber 5 in a sealing manner; piston disc 62 sets up in the powder column chamber 5, and piston disc 62 and the inner wall sliding seal of powder column chamber 5 are connected, form sealed pressure chamber 63 between piston disc 62 and the blanking cover 61, the suction nozzle 64 is used for intercommunication pressure chamber 63 and air supply, high-pressure gas enters into in the pressure chamber 63 through the suction nozzle 64, high-pressure gas acts on piston disc 62, promote piston disc 62 radial slip towards one side of grinding wheel 2, make the head end surface of powder column all the time with the machined surface butt, promote the powder column through setting up feeding subassembly 6, make grinding wheel 2 continuously grind the head end surface of powder column.

In the above process, the feeding speed of the grain fuel moving to one side of the grinding wheel 2 is controlled by controlling the pressure of the air in the pressure chamber 63, so as to control the rate of processing the powder fuel by the grinding wheel 2, when the pressure of the air in the pressure chamber 63 is higher, the acting force on the piston disc 62 is higher, the interaction force between the grain fuel and the grinding wheel 2 is higher, and the processing efficiency of the grinding wheel 2 is higher.

In the above structure, as a more preferable embodiment, the fuel supply device in the embodiment of the present invention further includes a filter screen 9 and a support assembly, wherein the support assembly is disposed in the fluidization chamber 4 and is used for supporting the filter screen 9, the filter screen 9 is disposed between the air outlet 31 and the rotating shaft 1, the fuel powder processed by the grinding wheel 2 is filtered by the filter screen 9, the fuel powder with larger particle size is prevented from passing through the filter screen 9, the pulverized fuel with smaller particle size in the pulverized fuel is allowed to enter the air outlet 31 through the filter screen 9, the pulverized fuel with larger particle size is continuously processed by the grinding body 22, the pulverized fuel with smaller particle size is combusted more fully in the combustion process, and the fuel can be ensured to be fully combusted.

In the above structure, as a more preferable implementation manner, the flow guiding assembly 7 in the embodiment of the present invention includes the first gas inlet 71 and a fluidizing gas source, wherein the first gas inlet 71 is disposed on a side of the housing 3 away from the gas outlet 31, the first gas inlet 71 is communicated with the fluidizing chamber 4, the fluidizing gas source is connected to the first gas inlet 71, the fluidizing gas enters the fluidizing chamber 4 through the first gas inlet 71, the powdered fuel in the fluidizing chamber 4 flows towards one end of the gas outlet 31 under the action of the fluidizing gas, and under the action of the fluidizing gas, the local accumulation of the powdered fuel can be prevented, heat generated by the grinding process can be taken away in the flowing process of the fluidizing gas, the agglomeration and sintering of the powdered fuel at high temperature can be prevented, and continuous and stable supply of the powdered fuel can be realized.

As shown in fig. 1 to 3, the grinding body 22 of the embodiment of the present invention is embodied as a cutting blade, the surface of the head end of the fuel grain contacts with the cutting blade, the fuel grain is cut into powder fuel by the cutting blade, and the powder fuel cut by the cutting blade is diffused in the fluidization chamber 4 and mixed with the fluidization gas for fluidization.

In the embodiment of the invention, the fluidization space of the fluidization cavity 4 is large, the filter screen 9 is fixedly connected with the rotating shaft 1, and the support assembly in the fuel supply device comprises a support frame 81, wherein an opening for the fluidization gas to pass through is formed in the support frame 81, the support frame 81 is rotatably connected with the housing 3, the support frame 81 is fixedly connected with the filter screen 9, the support frame 81 is rotatably connected with the rotating shaft 1 through a bearing, one end of the rotating shaft 1, which is far away from the filter screen 9, is rotatably connected with the housing 3 through a bearing, and sealing elements are respectively arranged between the rotating shaft 1 and the housing 3 and between the rotating shaft 1 and the support frame 81, so that fuel powder is prevented from entering between the rotating shaft 1 and the support frame 81 to influence the axial rotation of the rotating shaft 1.

In the above structure, the fluidizing chamber 4 in the embodiment of the present invention has a larger fluidizing space at the side of the filter screen 9 far from the grinding wheel 2, the end of the fluidizing chamber 4 near the air outlet 31 has a tapered structure, and the cross-sectional dimension of the fluidizing chamber 4 is gradually reduced toward the end far from the driving member.

In the above structure, the first gas inlet 71 in the embodiment of the present invention is disposed at one end of the housing 3 away from the gas outlet 31, the first gas inlet 71 is communicated with the fluidization chamber 4 through the fluidization gas distribution plate 711, the fluidization gas distribution plate 711 is provided with the gas distribution holes 712, the gas distribution holes 712 are provided in multiple sets, the multiple sets of gas distribution holes 712 are uniformly arranged on the fluidization gas distribution plate 711 at intervals around the circumferential direction of the rotating shaft 1, the fluidization chamber 4 passes through the first gas inlet 71 and then uniformly enters the fluidization gap between the housing 3 and the cutting and grinding body through the gas distribution holes on the fluidization gas distribution plate, and the fluidization gap is brushed to prevent residual fuel powder from being present between the fluidization gaps.

In the above structure, the fuel cartridge in the embodiment of the present invention is preferably circular in cross section.

In the above configuration, as a more preferable embodiment, a fuel supply apparatus according to an embodiment of the present invention further includes: the driving piece, wherein the driving piece setting is kept away from the one end of gas outlet 31 at shell 3, rotates driving piece 11 of being connected with shell 3, the output of driving piece 11 with pivot 1 links to each other, drives pivot 1 axial rotates.

Furthermore, the output end of the driving member 11 in the embodiment of the present invention extends into the fluidization chamber 4, and the output end of the driving member 11 is hermetically connected to the housing 3, so as to ensure the airtightness of the fluidization chamber 4 and prevent the fluidization gas and the fuel powder in the fluidization chamber 4 from overflowing from the gap between the output end and the housing 3.

Furthermore, the driving member 11 in the embodiment of the present invention is embodied as a driving motor or a driving motor, and the output end of the driving member 11 is directly or indirectly connected to the rotating shaft.

As shown in fig. 4 to 6, fig. 4 to 6 are second embodiments of the fuel supply device provided in the present application.

The grinding body 22 in the second embodiment of the present invention is specifically a helical blade disposed around the radial direction of the wheel body 21, and the grain fuel is ground by the outer surface of the helical blade, on one hand, the powder fuel is conveyed to the air outlet 31 through the gap between the adjacent helical blades, and on the other hand, the helical blade can stir the fluidizing gas and the powder fuel, so as to improve the uniformity of mixing of the fluidizing gas and the powder fuel.

In the above structure, the first gas inlet 71 is disposed on the housing 3, and the first gas inlet 71 is disposed on the side of the milling body away from the gas outlet 31, and the fluidizing gas enters the fluidizing chamber 4 through the first gas inlet 71 to flush the fuel powder in the gap between the adjacent helical blades.

In the above structure, the air outlet 31 in the embodiment of the present invention is provided with an air outlet nozzle.

In the above structure, the support assembly in the embodiment of the present invention further includes a support 82, when the size in the fluidization chamber 4 is small, the support 82 is specifically a cylindrical structure, a through hole 821 for installing an air outlet nozzle is provided at one end of the support 82 close to the air outlet 31, the housing 3 fixedly connected to the housing 3 is provided at one end of the support 81 far from the through hole 821, a sealed air cavity 823 is formed between the outer wall of the support 81, the housing 3 and the end surface 822, the filter screen 9 is provided inside the end surface 822, and the filter screen 9 is fixedly connected to the inner wall of the support 82. At this time, one end of the rotating shaft 1 far away from the driving piece is arranged in the fluidization cavity 4 in a suspending way.

In the above structure, the flow guiding assembly 7 in the embodiment of the present invention further includes a second air inlet 72 and flow guiding holes 73, wherein the second air inlet 72 is disposed on the housing 3, the second air inlet 72 is communicated with the sealed air cavity 823 and the fluidized air source through the second air inlet 72, the flow guiding holes 73 are disposed on the end surface 822, the flow guiding holes 73 are used for communicating the sealed air cavity 823 and the fluidizing cavity 4, the flow guiding holes 73 are provided in multiple groups, and the multiple groups of flow guiding holes 73 are uniformly distributed around the circumference of the center line of the housing 3. The fluidization air enters the closed air cavity 823 through the second air inlet 72 and uniformly enters the fluidization cavity 4 through the diversion holes 73, and the fluidization air washes the filter screen 9 to prevent the filter screen 9 from being blocked because the filter screen 9 is arranged on the inner side of the diversion holes 73.

As shown in fig. 7 to 9, as a more preferred embodiment, the fuel supply apparatus provided in the embodiment of the present invention further includes: the driving piece, wherein the driving piece setting is kept away from the one end of gas outlet 31 at shell 3, rotates driving piece 11 of being connected with shell 3, the output of driving piece 11 with pivot 1 links to each other, drives pivot 1 axial rotates.

In the above structure, as a more preferable embodiment, the driving member 11 provided in the embodiment of the present invention is specifically a pneumatic motor; the pneumatic motor is provided with a third air inlet 24 connected with a fluidizing air source, and the air outlet end of the pneumatic motor is connected with a first air inlet 71 and a second air inlet 72 through an air pipe 25.

Pneumatic motor can turn into mechanical energy and produce rotary motion with the pressure energy in the compressed gas, and fluidization gas air supply enters into pneumatic motor through third air inlet 24 in, drives pivot 1 through fluidization gas and rotates, and fluidization gas is through giving vent to anger the end and pass through trachea 25 and link to each other with first air inlet 71 and second air inlet 72, so sets up, and through the flow of controlling the fluidization gas and entering into pneumatic motor, can be in order to reach the rotational speed of adjusting the pivot, and is more convenient.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fuel supply device characterized by comprising:

a rotating shaft (1);

the grinding wheel (2) is sleeved on the outer side of the rotating shaft (1) and is coaxially and fixedly connected with the rotating shaft (1);

the shell (3) is sleeved on the outer side of the grinding wheel (2) and is rotationally connected with the rotating shaft, and a fluidization cavity (4) is formed between the shell (3) and the grinding wheel (2);

a grain cavity (5) which is arranged at the outer side of the shell (3), is communicated with the fluidization cavity (4) and is used for accommodating grain fuel (51);

the feeding assembly (6) pushes the grain fuel (51) to move along the radial direction of the grain cavity (5) so that the head end surface of the grain fuel (51) is always abutted with the processing surface of the grinding wheel (2);

an air outlet (31) arranged at one end of the shell (3) and communicated with the fluidization cavity (4);

a flow guiding assembly (7) for inputting fluidization gas into the fluidization chamber (4) so that the powder fuel in the fluidization chamber (4) flows towards the gas outlet (31);

the powder column cavity (5) is at least provided with two groups, and the powder column cavity (5) is arranged around the grinding wheel (2) at intervals in the circumferential direction.

2. The fuel supply apparatus according to claim 1,

the grinding wheel (2) comprises:

a wheel body (21) fixedly connected with the rotating shaft (1);

the grinding body (22) is arranged on the outer circumferential surface of the wheel body (21), the machining surface is the circumferential surface of the grinding body (22) far away from the rotating shaft (1), and the distances from all parts of the machining surface to the center line of the rotating shaft (1) are equal.

3. The fuel supply apparatus according to claim 1,

the feed assembly (6) comprising:

the blocking cover (61) is fixedly and hermetically connected with one end of the medicine column cavity (5) far away from the shell (3);

a piston disc (62) connected with the inner wall of the drug column cavity (5) in a sliding and sealing mode, and a sealed pressure cavity (63) is formed between the piston disc (62) and the blocking cover (61);

and the air inlet nozzle (64) is used for communicating the pressure cavity (63) with an air source, and high-pressure air enters the pressure cavity (63) through the air inlet nozzle (64) to push the head end surface of the grain fuel (51) to be always abutted against the machining surface of the grinding wheel (2).

4. The fuel supply apparatus according to any one of claims 1 to 3,

the flow-guiding assembly (7) comprises:

a first gas inlet (71) arranged on the side of the housing (3) away from the gas outlet (31) and communicated with the fluidization chamber (4);

the fluidizing gas enters the fluidizing chamber (4) through the first gas inlet (71) to drive the fuel powder in the fluidizing chamber (4) to flow towards the gas outlet (31).

5. The fuel supply apparatus according to claim 4,

further comprising:

a support assembly arranged in the fluidization chamber (4) on a side adjacent to the air outlet (31);

and a filter screen (9) for filtering fuel powder is arranged on the supporting component.

6. The fuel supply apparatus according to claim 5,

the support assembly, comprising:

the support (82) is of a cylindrical structure, a through hole (821) connected with the air outlet (31) is formed in one end of the support (82), and an end face (822) fixedly connected with the shell (3) is formed in one end, far away from the through hole (821), of the support (82); and a closed air cavity (823) is formed among the outer wall of the supporting piece (82), the shell (3) and the end face (822), and the filter screen (9) is fixedly connected with the inner wall of the supporting piece (82).

7. The fuel supply apparatus according to claim 6,

the flow guide assembly (7) further comprises:

the second air inlet (72) is arranged on the shell (3) and is communicated with the closed air cavity (823) and the fluidized air source;

the guide holes (73) are arranged on the end face (822) and used for communicating the closed air cavity (823) with the fluidization cavity (4), a plurality of groups of guide holes (73) are arranged, and the guide holes (73) are uniformly distributed in the circumferential direction of the center line of the shell (3).

8. The fuel supply apparatus according to claim 7,

further comprising:

the setting is in shell (3) is kept away from the one end of gas outlet (31), with shell (3) rotate driving piece (11) of connecting, the output of driving piece (11) with pivot (1) links to each other, drives pivot (1) axial displacement.

9. The fuel supply apparatus according to claim 8,

the driving piece (11) is a pneumatic motor;

the pneumatic motor is provided with a third air inlet (24) connected with a fluidizing air source, and the air outlet end of the pneumatic motor is connected with the first air inlet (71) and the second air inlet (72) through an air pipe (25).