CN112091226B - Stable spraying device - Google Patents
Stable spraying device Download PDFInfo
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- CN112091226B CN112091226B CN202011183030.2A CN202011183030A CN112091226B CN 112091226 B CN112091226 B CN 112091226B CN 202011183030 A CN202011183030 A CN 202011183030A CN 112091226 B CN112091226 B CN 112091226B
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- flow
- air
- spraying
- molten metal
- air outlet
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- 238000005507 spraying Methods 0.000 title claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 70
- 229910052751 metal Inorganic materials 0.000 claims abstract description 70
- 239000007788 liquid Substances 0.000 claims abstract description 54
- 238000010438 heat treatment Methods 0.000 claims description 57
- 239000007789 gas Substances 0.000 claims description 55
- 239000011261 inert gas Substances 0.000 claims description 41
- 230000007246 mechanism Effects 0.000 claims description 39
- 238000002347 injection Methods 0.000 claims description 29
- 239000007924 injection Substances 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 20
- 238000005192 partition Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000000889 atomisation Methods 0.000 abstract description 16
- 239000000843 powder Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- 238000003723 Smelting Methods 0.000 abstract description 4
- 238000009689 gas atomisation Methods 0.000 abstract description 4
- 239000007921 spray Substances 0.000 description 34
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses a stable spraying device, which relates to the technical field of gas atomization powder making equipment and solves the problems that a common spraying device and a liquid outlet device are used for spraying molten metal in a smelting furnace at high pressure to finish the atomization powder making process, and the existing liquid outlet device is generally connected with the smelting furnace directly, so that the molten metal received in the liquid outlet device is unstable and the quality of a finished product of the metal atomization powder making is affected.
Description
Technical Field
The invention relates to the technical field of soft magnetic alloy gold treatment, in particular to a stable spraying device.
Background
Gas atomization milling is an important method for producing metal powder, and the principle is that after high-speed airflow is accelerated through an atomization nozzle, the kinetic energy of the airflow is converted into the surface energy of small metal liquid drops, so that the metal flow is crushed into small liquid drops and is solidified into powder in the subsequent flight. Because of its high efficiency in preparing metal powder, the controllability of particle size is continually receiving attention in the field of powder metallurgy. The gas atomization device influences the performance of the prepared metal powder to a great extent, and the atomizing nozzle is a key component of the whole gas atomization device, so that conversion between the kinetic energy of gas flow and the surface energy of the metal powder is realized.
The jet device and the liquid outlet device are used for spraying molten metal in the smelting furnace at high pressure to finish the atomization powder making process, and the existing liquid outlet device is generally and directly connected with the smelting furnace, so that the molten metal received in the liquid outlet device is not stable enough, and the quality of a finished product of the metal atomization powder making is affected.
Disclosure of Invention
The invention aims to provide a stable spraying device which has the advantages that a metal liquid can be in a relatively stable state before entering an atomization process, so that the stability and consistency of metal atomization are improved, and the flow rate of the metal liquid flowing from a heating device to a liquid outlet device can be controlled conveniently.
The technical aim of the invention is realized by the following technical scheme: the utility model provides a stable spraying device, includes the base, be equipped with jet equipment on the base, wear to be equipped with out liquid device on the jet equipment, go out to be connected with on the liquid device and be used for the connection spray cup of steady voltage, be connected with the heating device that can load the molten metal and heat on the connection spray cup, the junction of heating device and connection spray cup is equipped with and is used for controlling molten metal circulation and the obstructed valve assembly.
By adopting the technical scheme, the arrangement of the connecting spray cup ensures that the molten metal can obtain a relatively stable state before entering an atomization process, thereby being convenient for improving the stability and consistency of metal atomization; secondly, through set up valve assembly in heating device and the junction of connecting the spray cup, the flow when can be convenient for control metal liquid flow to go out liquid device from heating device, and then be convenient for further improve the stability of metal liquid.
The valve assembly comprises a bearing part, a first flow through hole for circulating molten metal is formed in the middle of the bearing part, one end of the first flow through hole is communicated with the heating device, and the other end of the first flow through hole is communicated with the connecting spray cup; the plug rod which can completely block the first flow hole is connected in a sliding way in the bearing part.
The invention further provides a valve linear driving mechanism for driving the plug rod to move, and the movable end of the valve linear driving mechanism is connected with the plug rod.
By adopting the technical scheme, the plug rod is in sliding connection in the bearing part and can completely block the first flow through hole, namely, the plug rod can pass through the first flow through hole in the sliding process. Therefore, the degree of blocking the first flow through hole can be accurately controlled by controlling and adjusting the sliding distance of the plug rod in the bearing part, so that the control of the molten metal flow is realized. The valve linear driving mechanism is used for driving the sliding distance of the plug rod in the bearing part, and is a linear cylinder so as to further improve the accuracy of controlling the sliding distance of the plug rod, but the valve linear driving mechanism is not limited to the accuracy, and can be other linear driving devices.
The heating device comprises a heating container and a heating coil, wherein the heating coil is wound on the outer side wall of the heating container, the heating container is connected with the connecting spray cup, and the valve assembly is arranged at the joint of the heating container and the connecting spray cup.
By adopting the technical scheme, the heating container is a graphite crucible, and the heating coil is a coil adopting an inductive heating structure.
According to the invention, the base is provided with the fixing frame for fixing the heating container, and the heating container is clamped and fixed in the fixing frame.
Through adopting above-mentioned technical scheme, the mount can be used to press from both sides tight fixed heating container, both can be convenient for improve the stability of molten metal, still can be convenient for improve the security of this scheme.
According to the invention, the base is provided with the spray cup groove matched with the connection spray cup, the connection spray cup is installed in the spray cup groove in a matched mode, and the outer side of the connection spray cup is provided with the heat insulation layer positioned in the spray cup groove.
Through adopting above-mentioned technical scheme, the heat preservation can be used to reduce the lost temperature when the molten metal flows through the connection spray cup to the stability of molten metal before entering the atomizing process is further improved.
According to the invention, a second flow through hole is formed in the connecting spray cup, one end of the second flow through hole is communicated with the heating device, the other end of the second flow through hole is communicated with the liquid outlet device, and a filter layer for filtering impurities in molten metal is arranged in the second flow through hole.
By adopting the technical scheme, the filter layer can be used for filtering impurities in molten metal.
According to the invention, the main body is provided with the discharge hole, the end part of the main body, on which the discharge hole is arranged, is provided with the connecting part, the side wall of the connecting part is provided with the first diversion groove for changing the gas flow direction of the gas outlet of the gas nozzle, and the first diversion groove is arranged around the central axis of the main body.
By adopting the technical scheme, the high-pressure inert gas flow forms cone gas flow in the included angle gap, so that the molten metal is isolated from the air, and the oxidation of the molten metal is prevented.
The cross section of connecting portion is trapezoidal, then connecting portion outline be the round platform, and the air current direction is the same when the cross section axial of gas outlet and inert gas are spouted from the gas outlet, when the hypotenuse of connecting portion and the cross section axial of gas outlet parallel, can make inert gas draw close on the discharge gate of liquid outlet device as far as possible when spouting from the gas outlet to the isolation effect of inert gas to the molten metal is convenient for improve.
Meanwhile, the high-pressure inert gas flow forms a fan-shaped gas flow under the action of the included angle gap, the fan-shaped gas flow is divided into an inner-layer gas flow and an outer-layer gas flow, and an annular gas flow intersection point is formed at the junction of the inner-layer gas flow and the outer-layer gas flow, so that in an anaerobic state, the annular gas flow intersection point breaks up molten metal and naturally forms an amorphous sphere, and further standard amorphous powder is obtained. The cone airflow is divided into an inner airflow and an outer airflow, and the inner airflow is easy to generate reverse vortex under the cross action, so that the broken amorphous balls are caused to impact reversely, the molten metal is caused to flow reversely into the liquid outlet device, and the liquid outlet device is blocked.
When the high-pressure inert gas flows through the first diversion groove, the first diversion groove guides the high-pressure inert gas flow so that the high-pressure inert gas can break the inner-layer air flow and lead out the inner-layer air flow, and the outflow of the molten metal is accelerated by forming the action of air flow suction; the scheme can realize smooth outflow of molten metal through a simple structure, can conveniently reduce the blocking probability of the liquid outlet device, and can conveniently reduce the processing and manufacturing cost of the scheme.
According to the invention, the air injection device is annularly arranged, the air inlet is formed in the outer peripheral side of the air injection device, the air outlet is formed in the lower side of the air injection device, and the opening of the air outlet is obliquely arranged and faces to the central shaft position of the air injection device; the air injection device is characterized in that a connecting cavity communicated with the air inlet and the air outlet is formed in the air injection device, a separation part is arranged in the connecting cavity, the separation part divides the connecting cavity into a first air storage chamber and a buffer chamber, and the air inlet, the connecting cavity, the first air storage chamber, the buffer chamber and the air outlet are sequentially communicated.
By adopting the technical scheme, inert gas enters the first gas storage chamber from the gas inlet to store gas, and after the first gas storage chamber is filled with the inert gas, the inert gas flows into the buffer chamber and finally is sprayed out from the gas outlet; the first gas storage chamber can be used for increasing the gas storage amount of the inert gas in the initial stage of entering, so that the connecting cavity is filled with the inert gas, and the pressure of the inert gas during spraying is conveniently increased; and secondly, the buffer chamber is used for increasing the buffer quantity of the inert gas so as to increase the stability of the inert gas during initial ejection and improve the consistency during subsequent ejection, and the working stability of the inert gas ejection in the scheme can be effectively improved.
In a further arrangement of the invention, the air injection device comprises an upper mouth and a lower mouth which are arranged in an upper-lower attachment way, wherein the upper mouth and the lower mouth are arranged in a ring shape, and the connecting cavity is formed between the upper mouth and the lower mouth which are fixedly attached; the lower section of the peripheral side wall of the upper mouth is provided with a first annular concave part in a winding mode, the partition part is circumferentially arranged on the upper side of the lower mouth, the side wall, close to one side of the central axis of the lower mouth, of the partition part is provided with a second annular concave part, and the buffer chamber is formed between the first annular concave part and the second annular concave part.
Through adopting above-mentioned technical scheme, jet equipment adopts split type packaging structure, fixes in order to form the inside cavity structure of buffer chamber through the equipment of last mouth and lower mouth, and then is convenient for reduce manufacturing cost.
In summary, the invention has the following beneficial effects:
1. the molten metal can be in a relatively stable state before entering an atomization process, so that the stability and consistency of metal atomization are improved conveniently;
2. The flow of the molten metal can be conveniently controlled through the valve assembly, so that the stability of the molten metal can be further improved;
3. The probability of the backflow of the metal liquid can be reduced, so that the probability of blockage of a liquid outlet device can be reduced;
4. Simple structure, and is convenient for production and manufacture.
In general, the invention can ensure that the molten metal can obtain a relatively stable state before entering an atomization process, thereby being convenient for improving the stability and consistency of metal atomization and being convenient for controlling the flow of the molten metal.
Drawings
Fig. 1 is a schematic structural view of the present embodiment;
FIG. 2 is a schematic diagram illustrating the connection relationship among the moving mechanism, the lifting mechanism, the air injection device and the liquid outlet device in the present embodiment;
FIG. 3 is a schematic diagram showing the connection relationship between the air-injection device, the liquid-discharge device and the heating device in the present embodiment;
FIG. 4 is a schematic view showing a semi-sectional structure of the air jet device in the present embodiment;
FIG. 5 is a schematic diagram showing a semi-sectional structure of the liquid outlet device in this embodiment;
FIG. 6 is an enlarged view at B in FIG. 5;
FIG. 7 is a schematic diagram of the liquid outlet device in this embodiment;
fig. 8 is a schematic diagram illustrating the connection relationship between the air injection device, the liquid outlet device and the air box in this embodiment.
Reference numerals:
1. A base; 2. a rotary tank; 3. a moving mechanism; 31. a lifting mechanism; 32. a first linear motion device; 4. a swinging mechanism; 5. a heating device; 51. heating the container; 52. a heating coil; 61. a liquid outlet device; 62. an air injection device; 621. an upper mouth; 622. a lower mouth; 7. the spray cup is connected; 8. a valve assembly; 81. a receiving part; 9. a plug rod; 10. a first flow through hole; 11. a heat preservation layer; 12. a connection part; 121. an inclined surface; 13. a first flow guiding groove; 14. the second diversion groove; 15. a discharge hole; 16. an air inlet; 17. a connecting cavity; 171. a first air storage chamber; 172. a buffer chamber; 18. an air outlet; 19. a partition portion; 20. round table type concave; 21. a first annular recess; 22. a second annular recess; 23. a case body; 24. a mounting groove; 25. a second air storage chamber; 26. an air inlet pipe; 27. a fixing frame; 28. a spray cup groove; 29. a second flow through hole; 30. a filter layer; 31. a pressurizing port; 311. a first booster stage; 312. and a second booster stage.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Examples:
The utility model provides a stable form injection apparatus, as shown in fig. 1 through 8, including base 1, be equipped with jet equipment 62 on the base 1, wear to be equipped with out liquid device 61 on the jet equipment 62, be connected with on the liquid device 61 and be used for the connection spray cup 7 of steady voltage, be connected with on the connection spray cup 7 and load the metal liquid and carry out the heating device 5 of heating, the junction of heating device 5 and connection spray cup 7 is equipped with and is used for controlling metal liquid circulation and the obstructed valve assembly 8.
The embodiment can also be applied to the moving mechanism 3, the air injection device 62 is disposed at the movable end of the moving mechanism 3, the swinging mechanism 4 is disposed below the liquid outlet device 61, the rotary tank 2 for cooling the molten metal is disposed at the movable end of the swinging mechanism 4, and the rotary tank 2 is disposed below the liquid outlet device 61.
Working process and principle: specifically, the moving mechanism 3 is connected to the combination of the hot-melting device and the air-injecting device 62, and the rotating mechanism for driving the rotating tank 2 to perform a self-rotation movement and the swinging mechanism 4 for driving the swinging mechanism to perform a swinging angle adjustment are connected to the rotating tank; the rotary tank 2 is driven by the swing adjustment of the swing mechanism 4 and the rotation of the rotating mechanism to perform autorotation rotation at the swing angle of 30-60 degrees so as to meet the requirement of forming a cooling liquid film in the tank. The moving mechanism 3 may be matched with the lifting mechanism 31 and the translation mechanism 32 to form transmission movement in the XY axis direction.
A position sensor is provided on the tank opening side of the combined mechanism of the hot melting device and the air injecting device 62 toward the rotary tank 2, and the position sensor can be applied as an infrared sensor of the prior art; the position sensor senses and collects the position information of the cooling liquid film in the tank facing the position in real time so as to analyze and confirm the position state of the side end face of the cooling liquid film surface, and the position information is sequentially fed back to the corresponding controller. Under the program setting application based on the controller, the lifting mechanism 31 and the translation mechanism 32 are driven to move in a transmission way, and the air injection device and the hot melting device are driven to perform position alignment adjustment, so that the amorphous powder flow is output corresponding to the cooling liquid film.
The liquid outlet device 61 is a liquid outlet nozzle, the air injection device 62 is an air outlet nozzle, the liquid outlet nozzle is threaded through the air outlet nozzle, and the connecting part 12 is abutted against the inner side wall of the air outlet nozzle.
The moving mechanism 3 comprises a first linear moving device 32, a lifting mechanism 31 is arranged on the movable end of the first linear moving device 32, and an air injection device 62, a liquid outlet device 61 and a heating device 5 are arranged on the movable end of the lifting mechanism 31. The first linear motion device 32 is a carriage trolley that moves in a plane.
A pressure stabilizing connection spray cup 7 is connected between the heating device 5 and the liquid outlet device 61, and a valve component 8 for controlling the circulation and blocking of the molten metal is arranged at the joint of the heating device 5 and the connection spray cup 7.
Through the arrangement of the connecting spray cup 7, the molten metal can be in a relatively stable state before entering an atomization process, so that the stability and consistency of metal atomization are improved conveniently; secondly, through setting up valve assembly 8 in the junction of heating device 5 and connection spray cup 7, the flow when can be convenient for control molten metal flow from heating device 5 to go out liquid device 61, and then be convenient for further improve the stability of molten metal.
The valve assembly 8 comprises a bearing part 81, a first flow through hole 10 through which molten metal can flow is formed in the middle of the bearing part 81, one end of the first flow through hole 10 is communicated with the heating device 5, and the other end of the first flow through hole is communicated with the connecting spray cup 7; a plug rod 9 capable of completely closing the first flow hole 10 is slidably connected to the receiving portion 81.
The present embodiment includes a valve linear driving mechanism for driving the plug rod 9 to move, and the movable end of the valve linear driving mechanism is connected with the plug rod 9.
The plug rod 9 is slidably connected within the socket 81 and can completely block the first flow bore 10, i.e. the plug rod 9 can pass through the first flow bore 10 during sliding. Therefore, by controlling and adjusting the sliding distance of the plug rod 9 in the receiving portion 81, the degree of blocking the first flow hole 10 can be accurately controlled, and the flow rate of the molten metal can be controlled. The valve linear driving mechanism is used for driving the sliding distance of the plug rod 9 in the bearing part 81, and is a linear cylinder, so that the accuracy of controlling the sliding distance of the plug rod 9 is further improved, but the valve linear driving mechanism is not limited to this, and may be other linear driving devices.
The heating device 5 comprises a heating container 51 and a heating coil 52, the heating coil 52 is wound on the outer side wall of the heating container 51, the heating container 51 is connected with the connecting spray cup 7, and the valve assembly 8 is arranged at the joint of the heating container 51 and the connecting spray cup 7.
The heating container 51 is a graphite crucible, and the heating coil 52 is a coil having an induction heating structure.
The embodiment further comprises a base 1 arranged at the movable end of the lifting mechanism 31, a spray cup groove 28 matched with the connection spray cup 7 is formed in the base 1, the connection spray cup 7 is installed in the spray cup groove 28 in a matched mode, and a heat preservation layer 11 positioned in the spray cup groove 28 is arranged on the outer side of the connection spray cup 7.
The heat-insulating layer 11 can be used to reduce the temperature lost when the molten metal flows through the connecting cup 7, so as to further improve the stability of the molten metal before it enters the atomisation process.
The end of the liquid outlet device 61 is provided with a connecting part 12, the outer peripheral side of the connecting part 12 is provided with an inclined surface 121 which is inclined towards the position of the air outlet 18, the air outlet 18 is arranged towards the inclined surface 121, and the outer wall of the inclined surface 121 is provided with a first diversion groove 13 for changing the flow direction of the air outlet 18 of the air outlet nozzle. The inclined surface 121 is inclined at an angle of 30 to 60 degrees with respect to the central axis of the air outlet 18. The bottom of the connecting part 12 is provided with a second guiding groove 14 arranged around the central axis of the liquid outlet device 61. The reverse air flow of the high-pressure inert gas crossing at the center point is guided by the second guide groove 14 to disperse the air flow of the liquid outlet in the discharging hole 15, so as to form the suction in the air flow to make the molten metal smoothly flow out.
The first flow guiding groove 13 is semicircular in cross section and has a diameter of 2mm. The second flow guiding groove 14 is semicircular in cross section and has a diameter of 2mm.
The high-pressure inert gas flow forms cone gas flow in the included angle gap, so that the molten metal is isolated from air, and oxidation of the molten metal is prevented.
The cross section of connecting portion 12 is trapezoidal, then connecting portion 12 outline is the round platform type, and the air current direction is the same when the cross section axial of gas outlet 18 and inert gas are spouted from gas outlet 18, and when the hypotenuse of connecting portion 12 was parallel with the cross section axial of gas outlet 18, can make inert gas to draw close as far as possible on the discharge gate of liquid outlet device 61 when spouting from gas outlet 18 to make high pressure inert gas air current be formed with the air current cover that is the taper in gas outlet 18 one side, can make molten metal and air isolation, in order to prevent molten metal oxidation.
Meanwhile, the high-pressure inert gas flow is guided by the gas outlet 18 to form an inner-layer gas flow and an outer-layer gas flow, and an annular gas flow junction point which is annularly arranged is formed at the junction of the inner-layer gas flow and the outer-layer gas flow, so that in an anaerobic state, the annular gas flow junction point breaks up molten metal and naturally forms an amorphous sphere, and further standard amorphous powder is obtained.
The high-pressure inert gas flows are annularly arranged, and the inclination angle of the intersection of the gas flows is 20-60 degrees.
When the high-pressure inert gas flows through the first diversion groove 13, the first diversion groove 13 guides the high-pressure inert gas flow so as to break the inner layer air flow and lead out the inner layer air flow, thereby accelerating the outflow of the molten metal by forming the action of air flow suction; the smooth outflow of molten metal is realized through simple structure in this scheme, both can be convenient for reduce the probability that goes out liquid device 61 and block up, still can be convenient for reduce the processing manufacturing cost of this scheme.
The air injection device 62 is annularly arranged, the air inlet 16 is formed in the outer peripheral side of the air injection device 62, the air outlet 18 is formed in the lower side of the air injection device 62, and the opening of the air outlet 18 is obliquely arranged and faces the central shaft position of the air injection device 62; the air jet device 62 has a connection chamber 17 communicating with the air inlet 16 and the air outlet 18, a partition 19 is provided in the connection chamber 17, the partition 19 divides the connection chamber 17 into a first air storage chamber 171 and a buffer chamber 172, and the air inlet 16, the connection chamber 17, the first air storage chamber 171, the buffer chamber 172, and the air outlet 18 are sequentially communicated.
Inert gas enters the first gas storage chamber 171 from the gas inlet 16 for gas storage, and after the first gas storage chamber 171 is filled with inert gas, the inert gas flows into the buffer chamber 172 and finally is sprayed out from the gas outlet 18; the first gas storage chamber 171 may be used to increase the gas storage amount at the initial stage of the inert gas entering, so that the connection chamber 17 is filled with the inert gas, thereby facilitating the increase of the pressure of the inert gas during the spraying; secondly, the buffer chamber 172 is used for increasing the buffer amount of the inert gas, so as to increase the stability of the inert gas during initial ejection and improve the consistency during subsequent ejection, and effectively improve the working stability of the inert gas ejection in the scheme.
The air-jet device 62 includes an upper mouth 621 and a lower mouth 622 which are arranged in an upper-lower attachment manner, the upper mouth 621 and the lower mouth 622 are both arranged in a ring shape, and a connecting cavity 17 is formed between the upper mouth 621 and the lower mouth 622 which are fixedly attached; the lower section of the outer peripheral side wall of the upper mouth 621 is formed with a first annular recess 21 around, the partition 19 is circumferentially disposed on the upper side of the lower mouth 622, the side wall of the partition 19 near the central axis of the lower mouth 622 is provided with a second annular recess 22, and the buffer chamber 172 is formed between the first annular recess 21 and the second annular recess 22.
The air injection device 62 adopts a split assembly structure, and is assembled and fixed through the upper mouth 621 and the lower mouth 622 to form an internal cavity structure of the buffer chamber 172, so that the production and manufacturing cost is reduced.
In this embodiment, the aperture of the air inlet 16 is 10 to 14mm, and the cross-sectional opening width of the air outlet 18 is 0.5 to 3mm. The air outlet 18 is inclined at an angle of 30 to 60 degrees with respect to the central axis of the air jet device 62.
The connecting chamber 17 is provided with a pressurizing port 31 for pressurizing the gas near the gas outlet 18. The supercharging port 31 includes a first supercharging section 311 having a truncated cone-shaped cross section, and a second supercharging section 312 having a rectangular cross section, the first supercharging section 311 being connected to the buffer chamber 172, the first supercharging section 311 being smoothly connected to the second supercharging section 312.
The base 1 is provided with a box body 23 and an air injection device 62, the box body 23 is provided with a mounting groove 24 matched with the outer contour of the air injection device 62, and the air injection device 62 is arranged in the mounting groove 24 in a matching way. The side wall of the mounting groove 24, which is close to the air inlet 16, is provided with a second air storage chamber 25 communicated with the first air storage chamber 171, the side of the box body 23 is inserted with an air inlet pipe 26 communicated with an external air source, and the air inlet pipe 26 is communicated with the second air storage chamber 25.
In this embodiment, the molten metal refers to an amorphous or nanocrystalline alloy liquid, and the present solution is mainly applied to amorphous or nanocrystalline alloy powder preparation, but is not limited thereto.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Claims (10)
1. The stable spraying device comprises a base, wherein a spraying device is arranged on the base, and a liquid outlet device is arranged on the spraying device in a penetrating manner, and the stable spraying device is characterized in that a connecting spraying cup used for stabilizing pressure is connected to the liquid outlet device, a heating device capable of loading molten metal and heating is connected to the connecting spraying cup, and a valve assembly used for controlling the circulation and blocking of the molten metal is arranged at the joint of the heating device and the connecting spraying cup;
The air injection device is annularly arranged, an air inlet is formed in the outer peripheral side of the air injection device, and an air outlet is formed in the lower side of the air injection device;
The end part of the liquid outlet device is provided with a connecting part, the peripheral side of the connecting part is provided with an inclined surface which is inclined towards the position of the air outlet, the air outlet is arranged towards the inclined surface, the outer wall of the inclined surface is provided with a first diversion groove for changing the flow direction of the air outlet nozzle, and the inclined surface is inclined at an angle of 30-60 degrees relative to the central axis of the air outlet; the bottom of the connecting part is provided with a second diversion groove which is arranged around the central axis of the liquid outlet device; the reverse airflow of the high-pressure inert gas crossing at the center point is guided by the second guide groove so as to disperse the liquid outlet airflow in the discharge hole, and then the suction in the airflow is formed so as to enable the molten metal to smoothly flow out;
The cross section of the connecting part is trapezoid, the outline of the connecting part is in a truncated cone shape, the axial direction of the cross section of the air outlet is the same as the air flow direction when the inert gas is sprayed out of the air outlet, and when the oblique side of the connecting part is axially parallel to the cross section of the air outlet, the inert gas can be drawn close to the discharge port of the liquid outlet device when sprayed out of the air outlet, so that a conical air flow cover is formed on one side of the air outlet by the high-pressure inert gas flow;
The high-pressure inert gas flow is guided by the gas outlet to form an inner-layer gas flow and an outer-layer gas flow, an annular gas flow junction point which is annularly arranged is formed at the junction of the inner-layer gas flow and the outer-layer gas flow, and the annular gas flow junction point breaks molten metal in an anaerobic state; the high-pressure inert gas flows are annularly arranged, and the inclination angle of the intersection of the gas flows is 20-60 degrees.
2. The stable spraying device according to claim 1, wherein the valve assembly comprises a receiving part, a first flow through hole for circulating molten metal is formed in the middle of the receiving part, one end of the first flow through hole is communicated with the heating device, and the other end of the first flow through hole is communicated with the connecting spraying cup; the plug rod which can completely block the first flow hole is connected in a sliding way in the bearing part.
3. A stable spraying device according to claim 2, comprising a valve linear drive mechanism for driving movement of the plug stem, the movable end of the valve linear drive mechanism being connected to the plug stem.
4. The stable spraying device according to claim 1, wherein the heating device comprises a heating container and a heating coil, the heating coil is wound on the outer side wall of the heating container, the heating container is connected with the connecting spraying cup, and the valve assembly is arranged at the joint of the heating container and the connecting spraying cup.
5. The stable spraying device according to claim 4, wherein the base is provided with a fixing frame for fixing the heating container, and the heating container is clamped and fixed in the fixing frame.
6. The stable spraying device according to claim 1, wherein the base is provided with a spraying cup groove matched with the connecting spraying cup, the connecting spraying cup is installed in the spraying cup groove in a matched mode, and the outer side of the connecting spraying cup is provided with a heat insulation layer positioned in the spraying cup groove.
7. The stable spraying device according to claim 1, wherein a second flow through hole is formed in the connecting spraying cup, one end of the second flow through hole is communicated with the heating device, the other end of the second flow through hole is communicated with the liquid outlet device, and a filter layer for filtering impurities in molten metal is arranged in the second flow through hole.
8. The stable spraying device according to claim 1, wherein the rotary tank is positioned below the liquid outlet device, and is connected with a rotating mechanism for driving the rotary tank to perform self-rotation movement and a swinging mechanism for driving the rotary tank to perform swinging angle adjustment; the rotary tank is driven by the swing adjustment of the swing mechanism and the rotation of the rotating mechanism to automatically rotate at a swing angle of 30-60 degrees.
9. A stable spraying device according to claim 1, wherein the opening of the air outlet is arranged obliquely and towards the central axis of the spraying device; the air injection device is characterized in that a connecting cavity communicated with the air inlet and the air outlet is formed in the air injection device, a separation part is arranged in the connecting cavity, the separation part divides the connecting cavity into a first air storage chamber and a buffer chamber, and the air inlet, the connecting cavity, the first air storage chamber, the buffer chamber and the air outlet are sequentially communicated.
10. A stable spraying device according to claim 9, wherein the spraying device comprises an upper mouth and a lower mouth which are arranged in a vertically attached manner, the upper mouth and the lower mouth are arranged in a ring shape, and the connecting cavity is formed between the upper mouth and the lower mouth which are fixedly attached; the lower section of the peripheral side wall of the upper mouth is provided with a first annular concave part in a winding mode, the partition part is circumferentially arranged on the upper side of the lower mouth, the side wall, close to one side of the central axis of the lower mouth, of the partition part is provided with a second annular concave part, and the buffer chamber is formed between the first annular concave part and the second annular concave part.
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| CN202011183030.2A CN112091226B (en) | 2020-10-29 | 2020-10-29 | Stable spraying device |
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| CN202011183030.2A CN112091226B (en) | 2020-10-29 | 2020-10-29 | Stable spraying device |
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