CN110617159A - Vibrating screen type powder supply device and powder ramjet engine thereof - Google Patents
Vibrating screen type powder supply device and powder ramjet engine thereof Download PDFInfo
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- CN110617159A CN110617159A CN201910878518.8A CN201910878518A CN110617159A CN 110617159 A CN110617159 A CN 110617159A CN 201910878518 A CN201910878518 A CN 201910878518A CN 110617159 A CN110617159 A CN 110617159A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
- F02K7/10—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof characterised by having ram-action compression, i.e. aero-thermo-dynamic-ducts or ram-jet engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
- F02K9/32—Constructional parts; Details not otherwise provided for
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention provides a vibrating screen type powder supply device, which comprises an air supply section, a vibrating screen powder section, a fluidization section, a contraction section and an adjusting section, wherein the air supply section is connected with the powder supply section; the gas supply section, the powder vibrating section, the fluidizing section, the contraction section and the adjusting section are sequentially arranged from front to back along the powder supply direction.
Description
Technical Field
The invention relates to the field of aerospace, in particular to a vibrating screen type powder supply device and a powder ramjet engine thereof.
Background
The development of the new generation supersonic missile puts higher requirements on the performance of the power device. The engine has the advantages of high energy, capability of normally working in a large airspace with multiple elastic paths, high reaction speed, small volume, light weight, convenient maintenance and use, good storage performance and the like, and has wide application prospect.
The powder fuel ramjet is a novel ramjet taking high-energy metal (Al, Mg) or boron powder as fuel and ram air as oxidant and working medium, and the main components of the novel ramjet are a powder fuel storage tank, a fuel supply system, an air inlet channel, a precombustion 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, combustion products are sprayed out from the spray pipe to generate thrust. Compared with the traditional liquid fuel ramjet engine and solid rocket ramjet engine, the powder fuel ramjet engine has the following advantages because the fuel form is normal-temperature tiny solid particles: the high specific impact and density specific impact are high, the high-temperature solid fuel or liquid fuel ramjet is safe and reliable, the structure is simple, the storage and aging problems do not exist, the problem that high-temperature combustion products of hydrocarbon fuels are easy to dissociate does not exist, the high-temperature solid fuel or liquid fuel ramjet can be matched with the existing solid fuel or liquid fuel ramjet for use, the specific impact performance of the traditional ramjet can be greatly improved by adding the powder fuel, the original functions of the traditional ramjet can be improved and increased, solid/powder is formed, and the ramjet is combined by liquid/powder, so that the specific impact performance of.
The powder supply system of the powder ramjet engine is different from the powder supply system of the powder ramjet engine in principle, and mainly aims to realize stable combustion and thrust adjustment of the powder fuel ramjet engine by adopting a conveying mode combining piston pushing and pneumatic carrying. Since the performance of the powder supply device directly affects the operation performance of the powder engine, although the supply principle is different, the powder supply technology is different, and the current powder fuel supply system scheme mainly includes two modes: one is a fluidized bed type pulverized fuel supply system; another type is an air-entrained pulverized fuel supply system.
The working principle of the fluidized bed type powder fuel supply system is as follows: the powder is filled in the fuel storage tank, fluidizing gas for driving the powder is introduced from the piston rod, enters the powder bed body through the air distribution plate on the surface of the piston and carries the powder to be sprayed out from the outlet, and the piston compresses the powder in the storage tank under the action of the other path of control gas. 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. After that, many scholars improve the device to realize the fluidized supply of the powder fuel. In the working process, the piston is pushed by gas to compress the powder all the time.
The air flow entrainment type powder fuel supply system has the following principle: in order to embody the advantage of the simple configuration of the pulverized fuel ramjet, the literature proposes a pulverized fuel supply system with a simpler structure. The fluidizing gas is blown from the annular cutting slit of the head to skim the surface of the powder at high speed, and the powder fuel in the storage tank is rolled up and sprayed out under the action of gas-phase drag force, so that the fluidization of the fuel is realized. The piston rod at the tail of the tank constantly pushes the fuel forward, thus ensuring a continuous supply of fuel, and its fuel flow rate can be controlled depending on the piston movement speed. The supply system can realize stable supply of the powdered fuel for 3-6 minutes in the test.
The chargan team of the university of defense science and technology develops the research on the fuel supply system of the powder ramjet engine by adopting a method of combining theoretical analysis, experimental research and numerical simulation. A set of powder fuel supply system is designed, the principle of the powder fuel supply system is similar to that of the powder fuel supply system, the powder fuel supply system can work under the high-pressure condition, and the piston is pushed to advance by a linear motor, so that the era of challenging air pressure driving by using motor driving is opened.
The powder fuel supply technology is the core technology of the powder fuel ramjet engine, and the realization of continuous, stable and controllable supply of the powder fuel is the premise of reliable operation of the engine.
Disclosure of Invention
The invention aims to provide a vibrating screen type powder supply device which can realize accurate adjustment of powder fuel.
The invention is realized by the following technical scheme
The invention provides a vibrating screen type powder supply device, comprising: the device comprises a gas supply section, a vibrating screen powder section, a fluidization section, a contraction section and an adjusting section;
the gas supply section, the powder vibrating screen section, the fluidizing section, the contraction section and the adjusting section are sequentially arranged from front to back along the powder supply direction;
the air supply section comprises an air supply section shell and an air inlet, the air inlet is arranged on the air supply section shell, and a piston air cavity is formed inside the air supply section shell; a medicine pushing piston is arranged between the gas supply section and the powder vibrating screen section; the fluidization section comprises a fluidization section shell and a primary injection port, and the primary injection port is arranged on the fluidization section shell; a powder supply throat is formed at the contraction section;
shale shaker powder section is including sieve powder section casing, sieve powder section casing is inside to be provided with shale shaker powder spare and fuel grain, inside the partial structure embedding fuel grain of shale shaker powder spare, shale shaker powder spare includes: the device comprises a mounting bracket, a vibration motor, a motor bin, a vibration frame, a stepping motor and a movable plug cone;
one end of the mounting bracket is wound on the periphery of the motor bin, the other end of the mounting bracket is arranged on the inner wall of the powder section of the vibrating screen, a vibrating motor and a stepping motor are arranged in the motor bin, and the vibrating motor and the stepping motor are arranged at intervals;
the motor shaft of the vibration motor extends to the rear end of the motor bin and is connected with the vibration frame; the motor shaft of the stepping motor extends to the front end of the motor bin and is connected with the movable plug cone.
Optionally, the adjusting section comprises an adjusting section shell and a secondary injection port, and the secondary injection port is arranged on the adjusting section shell.
Optionally, the vibration frame includes a plurality of support rods, a first ring and a second ring; the first circular ring is arranged on the outer side of the stepping motor and is arranged at an interval with the stepping motor, and the second circular ring is arranged on the outer side of the movable plug cone and is arranged at an interval with the movable plug cone;
one end of the supporting rod is connected with a motor shaft of the vibration motor, and the other end of the supporting rod penetrates through the first circular ring and extends to the second circular ring.
Optionally, the strut includes a first bend; the front end of the first bending part is connected with a connecting shaft of the vibration motor, and the rear end of the first bending part is sequentially connected with an inclined part, a second bending part, an extending part and a connecting part.
Optionally, the front end of the inclined portion is connected with a first bending portion, the rear end of the inclined portion is connected with the front end of a second bending portion, and the inclined portion extends from front to back to the outside;
the rear end of the second bending part extends outwards and is connected with an extending part, and the rear end of the extending part penetrates through the first circular ring and extends inwards to the second circular ring, so that a connecting part is formed between the first circular ring and the second circular ring.
Optionally, the mobile plug cone comprises a straight portion, a transition portion, an enlarged portion, and a tapered portion; the front end of the straight part is connected with a motor shaft of the stepping motor, and the rear end of the straight part is sequentially connected with the transition part, the increasing part and the pyramid part.
Optionally, the straight portion is connected with the enlarged portion through a transition portion, the diameter of the enlarged portion gradually increases from the front end to the rear end, the pyramid portion is connected with the rear end of the enlarged portion, and the area of the pyramid portion gradually decreases from the front to the rear along the powder supply direction to form a cone shape.
The invention provides a powder ramjet engine, characterized in that the powder ramjet engine comprises any one of the vibrating screen type powder supply devices.
The invention has the beneficial effects that:
1. the invention provides a vibrating screen type powder supply device, wherein a fuel grain can be accurately adjusted under the action of a vibrating frame driven by a vibrating motor.
2. The invention provides a vibrating screen type powder supply device which can avoid the phenomenon of powder supply interruption caused by hardening and agglomeration of powder; the powder feeding device can also be used for solving the problem of powder feeding blockage in the powder feeding process due to small powder feeding opening.
3. The invention is provided with the movable plug cone and the powder supply throat, and can adjust the powder supply amount.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only examples of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic perspective view of a vibrating screen type powder supply device according to an embodiment of the present invention;
fig. 2 is a schematic front view of a vibrating screen type powder supply device according to an embodiment of the present invention;
FIG. 3 is a schematic sectional view of the plane A-A in FIG. 2, which shows a sectional structure of a vibrating screen type powder supply device according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view showing another state of the vibrating screen type powder feeder according to the embodiment of the present invention;
FIG. 5 is a schematic view showing the connection relationship between the vibration motor, the stepping motor, the vibration frame and the movable tap cone according to the embodiment of the present invention;
FIG. 6 is a schematic diagram of the connection relationship of the mounting bracket, the motor chamber, the vibration frame and the movable plug cone in the embodiment of the invention.
Reference numerals: 1, an air supply section; 10 air inlet; 11 a piston air cavity; 12 a gas supply section shell; 2, vibrating and screening powder sections; 20 mounting a bracket; 21 a vibration motor; 22 a motor cabin; 23 vibrating a frame; 230 struts; 2301 a first bend; 2302 inclined part; 2303 a second bend; 2304 an extension; 2305 a connecting part; 231 a first ring; 232 a second circular ring; 24 step motors; 25 moving the plug cone; 26 screening the powder section shell; a 250 straight portion; 251 a transition portion; 252 an enlarged portion; 253 a tapered part; 3 a fluidizing section; 30 a fluidization section shell; a primary injection port of 31; 4, a contraction section; 40 powder supply throat; 5 a regulating section; 50 an adjustment section housing; 51 a secondary injection port; 6, fuel grain; 7 pushing the medicine piston.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of the present invention.
Example 1
Embodiment 1 of the present invention provides a vibrating screen type powder supply device, as shown in fig. 1 to 6, including: the device comprises a gas supply section 1, a vibrating screen powder section 2, a fluidization section 3, a contraction section 4 and an adjusting section 5;
the gas supply section 1, the vibrating screen powder section 2, the fluidization section 3, the contraction section 4 and the adjusting section 5 are sequentially arranged from front to back along the powder supply direction;
the air supply section 1 comprises an air supply section shell 12 and an air inlet 10, wherein the air inlet 10 is arranged on the air supply section shell 12, a piston air cavity 11 is formed inside the air supply section shell 12, and the air inlet 10 and the piston air cavity 11 are communicated with each other.
A medicine pushing piston 7 is arranged between the gas supply section 1 and the powder vibrating screen section 2; the fluidization section 3 comprises a fluidization section shell 30 and a primary injection port 31, and the primary injection port 31 is arranged on the fluidization section shell 30; the primary injection port 31 is used for injecting fluidizing gas into the fluidizing section 3 to fluidize the pulverized fuel.
In this embodiment, the air inlet 10 is communicated with an external control gas for controlling the air pressure in the piston air chamber 11, and the external control gas enters the piston air chamber 11 through the air inlet 10 to increase the air pressure in the piston air chamber 11, so as to provide thrust for the medicine pushing piston 7, and thus push the medicine pushing piston 7 forward. The external control gas may be nitrogen gas or air.
A powder supply throat 40 with the smallest section is formed at the contraction section 4;
shale shaker powder section 2 is including sieve powder section casing 26, sieve powder section casing 26 is inside to be provided with shale shaker powder spare and fuel grain 6, part structure embedding fuel grain 6 of shale shaker powder spare is inside, shale shaker powder spare includes: the device comprises a mounting bracket 20, a vibration motor 21, a motor bin 22, a vibration frame 23, a stepping motor 24 and a movable plug cone 25;
referring to fig. 3, the mounting bracket 20, the motor chamber 22 and the vibrating frame 23 of the vibrating powder sieving part are embedded in the fuel grain 6, the vibrating motor 21 and the stepping motor 24 are mounted in the motor chamber 22, and the movable plug cone 25 is connected with the motor shaft of the stepping motor 24 and extends forwards to the contraction section 4.
The mounting bracket 20 is a hollow arrangement, and power lines and control signal lines of the vibration motor 21 and the stepping motor 24 are arranged inside the mounting bracket (the powder section of the vibration sieve) 2.
One end of the mounting bracket 20 is wound on the periphery of the motor bin 22, the other end of the mounting bracket 20 is arranged on the inner wall of the vibrating screen powder section 2, a vibrating motor 21 and a stepping motor 24 are arranged in the motor bin 22, and the vibrating motor 21 and the stepping motor 24 are arranged at intervals;
the stepping motor 24 of the embodiment of the invention can move back and forth and drive the movable plug cone 25 to move back and forth. The movable plug cone 25 can move forward to the position shown in fig. 4 to completely block the powder supply throat 40 of the contraction section 4, and can move backward to the position shown in fig. 3 to make the powder supply throat 40 of the contraction section 4 at the maximum opening position. The movable plug 25 is movable between the position shown in fig. 3 and the position shown in fig. 4 to adjust the size of the opening of the pulverized fuel supply throat 40 and thus the amount of pulverized fuel supplied.
When the powder feeding throat does not work, the movable plug cone 25 moves forwards and is matched with the molded surface of the contraction section 4 to close the powder feeding throat 40; when the powder feeding throat device works, the stepping motor drives the movable plug cone 25 to move backwards, and the opening degree of the powder feeding throat 40 is controlled according to a set signal.
The motor shaft of the vibration motor 21 extends to the rear end of the motor bin 22, and the motor shaft of the vibration motor 21 is connected with the vibration frame 23; the motor shaft of the stepping motor 24 extends to the front end of the motor chamber 22 and is connected with a movable plug cone 25. A stepping motor 24 arranged in the motor chamber 22 can drive the movable plug cone 25 to move back and forth.
Further, the adjusting section 5 includes an adjusting section shell 50 and a secondary injection port 51, and the secondary injection port 51 is disposed on the adjusting section shell 50.
The embodiment of the invention is provided with a primary injection port 31 and a secondary injection port 51, and the fluidizing gas is injected in two stages and the gas amount is controlled independently; the primary injection port 31 is used for injecting fluidizing gas into the fluidizing section 3 to be mixed and fluidized with fuel powder in the fluidizing section 3; the secondary injection port 51 is used to inject fluidizing gas into the conditioning section 5 to adjust the consistency of the bulk fuel powder.
The working principle of the embodiment of the invention is as follows: powder fuel is filled into the powder sieving section shell 2 to form a fuel grain 6, air pressure in the piston air cavity 11 provides thrust for the powder pushing piston 7, and the fuel grain 6 moves forwards under the thrust provided by the powder pushing piston 7; the vibration motor 21 in the motor chamber 22 drives the vibration frame 23, and the fuel grain 6 forms uniformly dispersed powder fuel under the vibration action of the vibration frame 23. The uniformly dispersed powdered fuel is in a diffused state, and the powdered fuel flows to the fluidizing section 3 under the action of the moving plug cone, so that the powdered fuel is mixed and fluidized with the fluidizing gas entering from the primary injection port 31 in the fluidizing section 3.
At the same time, the stepping motor 24 is operated so as to move the moving plug cone 25 backwards, delivering the pulverized fuel to the conditioning section 5 after the fluidizing section 3 has been completed. And the stepping motor 24 can adjust the supply amount of the powder fuel by moving the movable plug cone 25 back and forth through back and forth movement.
In the adjusting section 5, the pulverized fuel is mixed with the fluidizing gas introduced from the secondary injection port 51, so that the consistency of the fuel powder can be adjusted.
The fluidizing gas can be nitrogen or air.
Further, the vibration frame 23 includes a plurality of struts 230, a first ring 231, and a second ring 232; the first circular ring 231 is arranged on the outer side of the stepping motor 24 and is arranged at an interval with the stepping motor 24, and the second circular ring 232 is arranged on the outer side of the movable plug cone 25 and is arranged at an interval with the movable plug cone 25;
one end of the supporting rod 230 is connected to a motor shaft of the vibration motor 21, and the other end of the supporting rod 230 penetrates through the first ring 231 and extends to the second ring 232.
Further, the strut 230 includes a first bending portion 2301; the front end of the first bending part 2301 is connected to a connection shaft of the vibration motor 21, and the rear end of the first bending part 2301 is connected to an inclined part 2302, a second bending part 2303, an extending part 2304, and a connecting part 2305 in sequence.
Referring to fig. 5-6, an embodiment of the present invention provides three struts 230. The first bending portions 2301 of the three struts 230 converge together, and the convergence is connected to a motor shaft of the vibration motor 21.
Further, a first bent portion 2301 is connected to a front end of the inclined portion 2302, a second bent portion 2303 is connected to a rear end of the inclined portion 2302, and the inclined portion 2302 extends outward from front to rear;
the rear end of the second bending portion 2303 extends outwards and is connected with an extension portion 2304, and the rear end of the extension portion 2304 penetrates through the first ring 231 and extends inwards to the second ring 232, so that a connecting portion 2305 is formed between the first ring 231 and the second ring 232.
The vibrating frame 23 structure provided by the embodiment of the invention is formed by three supporting rods 230 and two rings (a first ring 231 and a second ring 232) with different diameters, the supporting rods 230 are in a specific shape as shown in fig. 5-6, so that the vibrating range is expanded, the vibrating effect is better, and the fuel grain 6 can be vibrated into uniformly dispersed fuel powder.
The vibrating frame 23 of the embodiment of the invention is used for applying certain vibration to the fuel grain 6 in the powder supply process to form uniformly dispersed fuel powder in a diffused state, and can also avoid the phenomenon of powder supply interruption caused by hardening and agglomeration of powder. The powder feeding device can also be used for solving the problem of powder feeding blockage in the powder feeding process due to small powder feeding opening.
Further, the shifting plug cone 25 includes a straight portion 250, a transition portion 251, an enlarged portion 252, and a tapered portion 253; the front end of the straight portion 250 is connected to the motor shaft of the stepping motor 24, and the rear end of the straight portion 250 is connected to the transition portion 251, the enlarged portion 252, and the tapered portion 253 in this order.
Further, the straight portion 250 is connected to an enlarged portion 252 through a transition portion 251, the diameter of the enlarged portion 252 gradually increases from the front end to the rear end, the tapered portion 253 is connected to the rear end of the enlarged portion 252, and the tapered portion 253 gradually decreases in the cross street area from the front to the rear in the powder supply direction to form a tapered shape.
The movable plug cone 25 of the embodiment of the present invention is configured as described above, the straight portion 250 is used for connecting with the stepping motor 24, and the enlarged portion 252 and the tapered portion 253 are matched with the profile of the contraction section 4 to control the opening of the powder supply throat 40. Referring to fig. 3, the enlarged portion 252 is far away from the profile of the contraction section 4, and the opening degree of the powder supply throat 40 is the largest, and referring to fig. 4, the enlarged portion 252 is moved to be closely matched with the profile of the contraction section 4, and the powder supply throat 40 is closed.
Example 2
Embodiment 2 of the present invention provides a powder ramjet engine including the vibrating screen type powder supply device described in embodiment 1.
It should be noted that, in the embodiments of the present invention, the connection manner includes a mechanical connection and also includes an electrical connection.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (8)
1. A vibrating screen type powder supply device is characterized by comprising: the device comprises a gas supply section (1), a vibrating screen powder section (2), a fluidization section (3), a contraction section (4) and an adjusting section (5);
the gas supply section (1), the vibrating screen powder section (2), the fluidization section (3), the contraction section (4) and the adjusting section (5) are sequentially arranged from front to back along the powder supply direction;
the gas supply section (1) comprises a gas supply section shell (12) and a gas inlet (10), the gas inlet (10) is arranged on the gas supply section shell (12), and a piston gas cavity (11) is formed in the gas supply section shell (12); a medicine pushing piston (7) is arranged between the air supply section (1) and the powder vibrating screen section (2); the fluidization section (3) comprises a fluidization section shell (30) and a primary injection port (31), and the primary injection port (31) is arranged on the fluidization section shell (30); a powder supply throat (40) is formed at the contraction section (4);
shale shaker powder section (2) are including sieve powder section casing (26), sieve powder section casing (26) inside is provided with shale shaker powder spare and fuel grain (6), inside partial structure embedding fuel grain (6) of shale shaker powder spare, shale shaker powder spare includes: the device comprises a mounting bracket (20), a vibration motor (21), a motor bin (22), a vibration frame (23), a stepping motor (24) and a movable plug cone (25);
one end of the mounting bracket (20) is wound on the periphery of the motor bin (22), the other end of the mounting bracket (20) is arranged on the inner wall of the vibrating screen powder section (2), a vibrating motor (21) and a stepping motor (24) are arranged in the motor bin (22), and the vibrating motor (21) and the stepping motor (24) are arranged at intervals;
the motor shaft of the vibration motor (21) extends to the rear end of the motor bin (22) and is connected with a vibration frame (23); the motor shaft of the stepping motor (24) extends to the front end of the motor bin (22) and is connected with a movable plug cone (25).
2. A vibrating screen powder feeder according to claim 1, characterised in that the regulating section (5) comprises a regulating section housing (50) and a secondary injection opening (51), the secondary injection opening (51) being provided in the regulating section housing (50).
3. A vibrating screen powder feeder according to claim 1, characterised in that the vibrating frame (23) comprises a number of struts (230), a first ring (231) and a second ring (232); the first circular ring (231) is arranged on the outer side of the stepping motor (24) and is arranged at an interval with the stepping motor (24), and the second circular ring (232) is arranged on the outer side of the movable plug cone (25) and is arranged at an interval with the movable plug cone (25);
one end of the supporting rod (230) is connected with a motor shaft of the vibration motor (21), and the other end of the supporting rod (230) penetrates through the first circular ring (231) and extends to the second circular ring (232).
4. A vibrating screen powder feeder according to claim 3, characterised in that the strut (230) comprises a first bend (2301); the front end of the first bending part (2301) is connected with a connecting shaft of the vibration motor (21), and the rear end of the first bending part (2301) is sequentially connected with an inclined part (2302), a second bending part (2303), an extending part (2304) and a connecting part (2305).
5. The vibrating screen type powder feeder according to claim 4, wherein a first bent portion (2301) is connected to a front end of the inclined portion (2302), a front end of a second bent portion (2303) is connected to a rear end of the inclined portion (2302), and the inclined portion (2302) extends outward from front to rear;
the rear end of the second bending part (2303) extends outwards and is connected with an extension part (2304), and the rear end of the extension part (2304) penetrates through the first ring (231) and extends inwards to the second ring (232), so that a connecting part (2305) is formed between the first ring (231) and the second ring (232).
6. A vibrating screen powder feeder according to claim 1, characterised in that the moving plug cone (25) comprises a straight portion (250), a transition portion (251), an enlarged portion (252) and a tapered portion (253); the front end of the straight part (250) is connected with the motor shaft of the stepping motor (24), and the rear end of the straight part (250) is sequentially connected with a transition part (251), an increasing part (252) and a cone part (253).
7. The vibrating screen powder feeder according to claim 6, wherein the straight portion (250) is connected to the enlarged portion (252) through a transition portion (251), the diameter of the enlarged portion (252) is gradually increased from the front end to the rear end, the tapered portion (253) is connected to the rear end of the enlarged portion (252), and the tapered portion (253) gradually decreases in cross-sectional area from the front to the rear in the powder feeding direction to form a tapered shape.
8. A powder ramjet engine comprising a vibrating screen powder supply as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910878518.8A CN110617159A (en) | 2019-09-18 | 2019-09-18 | Vibrating screen type powder supply device and powder ramjet engine thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910878518.8A CN110617159A (en) | 2019-09-18 | 2019-09-18 | Vibrating screen type powder supply device and powder ramjet engine thereof |
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| Publication Number | Publication Date |
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| CN110617159A true CN110617159A (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910878518.8A Pending CN110617159A (en) | 2019-09-18 | 2019-09-18 | Vibrating screen type powder supply device and powder ramjet engine thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811658A (en) * | 2022-05-11 | 2022-07-29 | 中南大学 | Fuel supply device |
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2019
- 2019-09-18 CN CN201910878518.8A patent/CN110617159A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811658A (en) * | 2022-05-11 | 2022-07-29 | 中南大学 | Fuel supply device |
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