CN115253331A - Combined anti-blocking flow guide device and powder atomization equipment - Google Patents
Combined anti-blocking flow guide device and powder atomization equipment Download PDFInfo
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- CN115253331A CN115253331A CN202210882869.8A CN202210882869A CN115253331A CN 115253331 A CN115253331 A CN 115253331A CN 202210882869 A CN202210882869 A CN 202210882869A CN 115253331 A CN115253331 A CN 115253331A
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- 239000000843 powder Substances 0.000 title claims abstract description 33
- 238000000889 atomisation Methods 0.000 title claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 55
- 239000002184 metal Substances 0.000 claims abstract description 55
- 238000009413 insulation Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract 3
- 239000007788 liquid Substances 0.000 claims description 27
- 230000007704 transition Effects 0.000 claims description 25
- 230000000087 stabilizing effect Effects 0.000 claims description 22
- 230000001681 protective effect Effects 0.000 claims description 19
- 230000006698 induction Effects 0.000 claims description 16
- 230000002829 reductive effect Effects 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 15
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- 238000004321 preservation Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000002893 slag Substances 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
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- 238000009690 centrifugal atomisation Methods 0.000 description 2
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- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
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- 239000011224 oxide ceramic Substances 0.000 description 1
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/16—Evaporating by spraying
- B01D1/18—Evaporating by spraying to obtain dry solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses a combined anti-blocking flow guide device and powder atomization equipment, wherein the powder atomization equipment comprises a tundish, the combined anti-blocking flow guide device comprises a flow guide nozzle and a heat insulation structure, the flow guide nozzle comprises a flow guide pipe, an anti-blocking part and an overflow part, and the flow guide pipe is connected with the tundish to form a conveying flow passage; the anti-blocking component is detachably connected with the flow guide pipe, the overflow component is detachably connected with the anti-blocking component, the anti-blocking component is provided with at least two overflow runners, the overflow component is provided with an overflow runner, and the conveying runner, the overflow runner and the overflow runner are communicated; the periphery of water conservancy diversion mouth is located to insulation construction cover. The invention relates to the technical field of metal powder preparation, wherein a flow guide pipe, an anti-blocking plug part and an overflow part are detachably connected, are combined and connected into a flow guide nozzle according to requirements, and are sleeved with a heat insulation structure at the periphery of the flow guide nozzle, so that the requirement of long-distance flow guide of a metal melt is met, the problem that the flow guide nozzle is blocked by the metal melt due to cooling and is discarded is solved, and the production cost is saved.
Description
Technical Field
The invention relates to the technical field of metal powder preparation, in particular to a combined anti-blocking flow guide device and powder atomization equipment.
Background
At present, aluminum alloy and stainless steel are mainly produced in the market through a VIGA process and a centrifugal atomization process, and forming a metal melt liquid column meeting the requirements by utilizing a flow guide device is one of key processes for ensuring the powder yield and the powder quality. The traditional VIGA process is mainly designed for the flow guide device with the length within 150mm, and the length of the flow guide device can exceed 250mm and even reach 600mm due to the space layout, mechanical design and other reasons of process requirements of centrifugal atomization process equipment. However, when the length of the flow guide device is increased to more than 250mm, the flow difficulty and the blocking risk of the aluminum alloy melt are increased, and meanwhile, after the small runner part of the flow guide device is blocked by slag and other factors, the whole flow guide device needs to be replaced, so that the production cost is increased. In addition, the size of a small flow passage in the flow guide device can be increased along with the erosion of the aluminum alloy melt, and the flow guide device with changed precision can be continuously used according to the traditional design, so that the atomization working condition can deviate from the optimal design parameter range; or the flow guide device is integrally replaced, thereby increasing the production cost.
Disclosure of Invention
The invention mainly aims to provide a combined anti-blocking flow guide device and powder atomization equipment, which can be combined and connected into a flow guide nozzle according to requirements through detachable connection among a flow guide pipe, an anti-blocking piece and an overflow piece, and then a heat insulation structure is sleeved on the periphery of the flow guide nozzle, so that the requirement of long-distance flow guide of a metal melt can be met, the problem that the flow guide nozzle is blocked by the metal melt due to cooling and the whole flow guide nozzle is discarded is solved, and the production cost is saved.
In order to achieve the above object, the present invention provides a combined anti-clogging flow guiding device, which is used for conveying a metal melt in a powder atomizing apparatus, wherein the powder atomizing apparatus includes a tundish, the combined anti-clogging flow guiding device includes a flow guiding nozzle and a heat insulating structure, the heat insulating structure is sleeved on the periphery of the flow guiding nozzle, and the flow guiding nozzle includes:
the guide pipe is connected with the tundish and forms a conveying flow channel;
the anti-blocking piece is detachably connected to the flow guide pipe and provided with at least two flow passages communicated with the conveying flow passage; and
the overflow piece, the overflow piece is equipped with the overflow runner, the overflow piece can dismantle connect in prevent stifled plug member, the overflow runner with the transport flow way passes through the overflow runner intercommunication.
In an embodiment of this application, prevent that blocking up spare is equipped with two mounting grooves of relative setting, two the mounting groove passes through overflow the runner intercommunication, the honeycomb duct with overflow spare can be dismantled respectively and peg graft in two the mounting groove.
In an embodiment of the application, at least two of the overflowing flow passages are uniformly arranged at intervals along the circumferential direction of the axis of the anti-blocking piece.
In an embodiment of the present application, the overflow member includes at least a first overflow head and a second overflow head, the first overflow head is detachably connected to the mounting groove, and the second overflow head is detachably connected to the flow guide pipe;
the first overflow head and the second overflow head are both provided with the overflow flow channel, the overflow flow channel comprises a transition section and a stable section, the transition section is communicated with the stable section and the overflow flow channel, the cross-sectional area of the transition section is gradually reduced from the overflow flow channel to the stable section, and the cross-sectional area of the stable section is kept unchanged.
In an embodiment of the present application, a threaded section is disposed on an outer circumferential surface of the first overflow head, and the threaded section of the first overflow head is inserted into the installation groove and is in threaded connection with a groove sidewall of the installation groove.
In an embodiment of this application, the second overflow head is equipped with the constant head tank, the overflow runner is seted up in the tank bottom wall of constant head tank, the groove lateral wall of constant head tank is equipped with the screw thread section, the honeycomb duct be used for threaded connection in the screw thread section of constant head tank.
In an embodiment of the application, the overflow runner further includes an extension section, the extension section is communicated with one end of the stabilizing section deviating from the transition section, and the cross-sectional area of the extension section gradually increases from the outlet of the stabilizing section to the direction far away from the flow guide pipe.
In an embodiment of this application, the both ends that the honeycomb duct is relative are equipped with inlet and liquid outlet, the surface at the both ends that the honeycomb duct is relative all is equipped with the screw thread section, and respectively the spiro union in the centre package with the groove side wall of mounting groove.
In an embodiment of the present application, the insulation structure includes:
the heat insulation layer is sleeved on the periphery of the flow guide nozzle;
the protective shell is sleeved on the periphery of the heat preservation layer;
the sealing element is arranged between the heat preservation layer and the protective shell and is positioned at the lower end of the heat preservation layer; and
heating element, heating element includes induction coil and power, induction coil's both ends are connected in the power, induction coil encircles and locates the periphery of protective housing.
In an embodiment of the present application, the length of the flow guide tube is defined as a, and satisfies the following relationship: a is more than or equal to 50mm and less than or equal to 1000mm;
and/or, the length of the thread section of the flow guide pipe close to the liquid inlet is defined as B, and the following relation is satisfied: b is more than or equal to 10mm and less than or equal to 50mm;
and/or, the length of the thread section of the flow guide pipe close to the liquid outlet is defined as C, and the following relation is satisfied: c is more than or equal to 5mm and less than or equal to 20mm;
and/or, defining the height of the anti-blocking piece as D, and satisfying the relation: d is more than 0mm and less than or equal to 20mm;
and/or, defining the length of the transition section as E, and satisfying the relation: e is more than 0mm and less than or equal to 40mm;
and/or defining the length of the stable section as F, and satisfying the relation: f is more than 0mm and less than or equal to 20mm;
and/or, defining the inner diameter of the stabilizing section as G, and satisfying the relation: g is more than 0mm and less than or equal to 2mm;
and/or, defining the thickness of the pipe wall of the horizontal section of the guide pipe as H, and satisfying the relation: h is more than or equal to 2mm and less than or equal to 10mm;
and/or defining the height of the overflowing flow channel as I, wherein the I is more than 0mm and less than or equal to 10mm;
and/or defining the thickness of the heat-insulating layer as J, and satisfying the relation: j is more than or equal to 20mm.
In an embodiment of the present application, the length of the thread section defining the positioning groove is K, and satisfies the following relationship: k is more than or equal to 5mm and less than or equal to 20mm.
The invention also provides powder atomization equipment which comprises a tundish and the combined anti-blocking flow guide device, wherein the combined anti-blocking flow guide device is connected to the tundish.
The combined anti-blocking flow guide device is used for conveying metal melt in powder atomization equipment, wherein the powder atomization equipment comprises a tundish, the combined anti-blocking flow guide device comprises a flow guide nozzle and a heat insulation structure, and the flow guide nozzle comprises a flow guide pipe, an anti-blocking plug part and an overflow part; the guide pipe is connected with the tundish, forms a conveying flow passage and can be used for conveying the metal melt; the anti-blocking component is detachably connected with the flow guide pipe, the overflow component is detachably connected with the anti-blocking component, and the anti-blocking component is provided with at least two overflow flow channels communicated with the conveying channel; the overflow piece is provided with an overflow runner, the overflow runner is communicated with the conveying runner through the overflow runner, and the metal melt can pass through the overflow runner after the overflow runner is communicated with the conveying runner. The heat-insulating structure is sleeved on the flow guiding nozzle, so that the state of the metal melt can be kept in the conveying process, the flow guiding nozzle cannot be blocked due to cooling along the flow, the problem that the whole flow guiding nozzle is discarded due to blocking is solved, and the production cost is saved. The honeycomb duct in this application, prevent that the connection between jam piece and the overflow piece is can dismantle the connection, so can make up the connection to the three according to the characteristics of metal melt to can satisfy the demand of different metal melts, also can satisfy the demand of metal melt long distance water conservancy diversion, practice thrift manufacturing cost.
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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the combined anti-clogging flow guiding device of the present invention;
FIG. 2 is a schematic structural view of another embodiment of the combined anti-clogging flow-guiding device of the present invention;
FIG. 3 is a schematic structural view of a flow guide tube according to an embodiment of the present invention;
fig. 4 is a schematic structural view of an embodiment of the anti-clogging member of the present invention;
FIG. 5 is a top view of an embodiment of the clog-proof member of the present invention;
FIG. 6 is a schematic structural view of another embodiment of the plug according to the present invention;
FIG. 7 is a top view of another embodiment of an anti-clog member of the present invention;
FIG. 8 is a schematic structural diagram of an embodiment of a first overflow head of the present invention;
FIG. 9 is a schematic structural view of a second overflow head according to an embodiment of the present invention;
FIG. 10 is a schematic structural view of yet another embodiment of a relief member according to the present invention;
fig. 11 is a schematic structural view of an embodiment of the insulation structure of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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 embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
With reference to fig. 1 to fig. 11, in an embodiment of the present invention, a combined anti-clogging flow guiding device 100 is provided for conveying a metal melt in a powder atomizing apparatus, the powder atomizing apparatus includes a tundish, the combined anti-clogging flow guiding device 100 includes a flow guiding nozzle 10 and a heat insulating structure 30, the heat insulating structure 30 is sleeved on an outer periphery of the flow guiding nozzle 10, the flow guiding nozzle 10 includes a flow guiding pipe 11, an anti-clogging block 13 and an overflow piece 15, the flow guiding pipe 11 is connected to the tundish and forms a conveying flow passage 111; the anti-blocking piece 13 is detachably connected to the draft tube 11, and the anti-blocking piece 13 is provided with at least two overflowing flow channels 131 communicated with the conveying flow channel 111; the overflow member 15 is provided with an overflow flow path 155, the overflow member 15 is detachably connected to the blocking member 13, and the overflow flow path 155 is communicated with the feeding flow path 111 through the overflow flow path 131.
The combined anti-blocking flow guide device 100 is used for conveying metal melt in powder atomization equipment, wherein the powder atomization equipment comprises a tundish, the combined anti-blocking flow guide device 100 comprises a flow guide nozzle 10 and a heat insulation structure 30, and the flow guide nozzle 10 comprises a flow guide pipe 11, an anti-blocking piece 13 and an overflow piece 15; the guide pipe 11 is connected with the tundish and forms a conveying flow passage 111 for conveying the metal melt; the anti-blocking piece 13 is detachably connected with the flow guide pipe 11, the overflow piece 15 is detachably connected with the anti-blocking piece 13, and the anti-blocking piece 13 is provided with at least two overflow flow channels 131 communicated with the conveying channel; the overflow member 15 is provided with an overflow runner 155, and the overflow runner 155 is communicated with the conveying runner 111 through the overflow runner 131 and can be used for the molten metal to pass through after being communicated. The heat insulation structure 30 is sleeved on the flow guide nozzle 10, so that the state of the metal melt can be kept in the conveying process, the flow guide nozzle 10 cannot be blocked due to temperature reduction along the flow path, the problem that the whole flow guide nozzle 10 is discarded due to blockage is solved, and the production cost is saved. Honeycomb duct 11 in this application, prevent that connection between jam piece 13 and the overflow piece 15 is can dismantle the connection, so can make up the connection to the three according to the characteristics of metal melt to can satisfy the demand of different metal melts, also can satisfy the demand of metal melt long distance water conservancy diversion, practice thrift manufacturing cost. It can be known that the nozzle 10 may be made of a good conductor material such as graphite material, or may be made of an insulating material such as alumina ceramic, which is not limited herein; the graphite and the alumina ceramics have the properties of high temperature resistance and corrosion resistance, and are suitable for conveying metal melts; the hydraulic radius of any horizontal section of the conveying flow channel 111 along the length direction is not less than 5mm, the hydraulic radius can be selected to be 5mm in the application, and the conveying flow channel 111 can be selected to be a cylinder with the same diameter; the metal melt in this application may be selected as an aluminum alloy melt.
With combined reference to fig. 1 to 10, in an embodiment of the present application, the anti-blocking member 13 may be configured as follows:
the anti-blocking member 13 is provided with two opposite mounting grooves 133, the two mounting grooves 133 are communicated through the overflow channel 131, and the flow guide pipe 11 and the overflow member 15 are detachably inserted into the two mounting grooves 133 respectively.
Referring to fig. 1 to 7, in an embodiment of the present application, at least two flow channels 131 are uniformly spaced along the axial center of the blockage 13.
The number of the overflowing flow channels 131 is at least two, the hydraulic radiuses of the overflowing flow channels 131 can be different, and the overflowing flow channels 131 are uniformly arranged at intervals along the circumferential direction of the axis of the anti-blocking piece 13.
With combined reference to fig. 1, 4 and 5, in an embodiment of the present application, the number of the overflowing flow passages 131 is five, the five overflowing flow passages 131 are all equal-diameter circular pipe type flow passages and are uniformly distributed along the central axis of the anti-blocking member 13, and the hydraulic radiuses of the five overflowing flow passages 131 may all be 0.75mm.
With combined reference to fig. 1, 6 and 7, in another embodiment of the present application, the number of the overflow channels 131 is three, the three overflow channels 131 are all equal-diameter circular tube type channels and are uniformly distributed along the central axis of the anti-blocking member 13, and the hydraulic radiuses of the three overflow channels 131 may all be 0.75mm.
It can be understood that as long as one overflowing runner 131 keeps flowing, the flow guiding device can normally work, and the arrangement of the overflowing runners 131 can reduce the problem that the flow guiding device cannot work due to the blockage of a single runner, prevent particles such as slag, segregation elements and the like from directly blocking the stable section 155b of the overflowing runner 155, further cause the whole flow guiding device to be replaced and discarded, and further reduce the waste of production cost.
Referring to fig. 1 to 9, in an embodiment of the present application, the overflow member 15 includes at least a first overflow head 151 and a second overflow head 153, the first overflow head 151 is detachably connected to the mounting groove 133, and the second overflow head 153 is detachably connected to the flow guide pipe 11; the first overflow head 151 and the second overflow head 153 are both provided with an overflow runner 155, the overflow runner 155 comprises a transition section 155a and a stable section 155b, the transition section 155a is communicated with the stable section 155b and the overflow runner 131, the cross-sectional area of the transition section 155a is gradually reduced from the overflow runner 131 to the stable section 155b, and the cross-sectional area of the stable section 155b is kept unchanged.
The overflow piece 15 at least comprises a first overflow head 151 and a second overflow head 153, the first overflow head 151 is detachably connected with the anti-blocking piece 13, and the second overflow head 153 is detachably connected with the flow guide pipe 11; it will be appreciated that the first overflow head 151 is intended to be connected to the anti-blockage 13 and the second overflow head 153 is intended to be connected to the flow duct 11; when the second overflow head 153 is used, there may be no anti-clog member 13 when assembling the apparatus.
The first overflow head 151 and the second overflow head 153 are both provided with an overflow runner 155, the overflow runner 155 comprises a transition section 155a and a stabilizing section 155b, and the transition section 155a and the stabilizing section 155b are communicated with each other, so that the stability of the metal melt can be ensured. The cross-sectional area of the transition section 155a is gradually reduced from the overflowing runner 131 to the stable section 155b, and the cross-sectional area of the stable section 155b is kept unchanged, so that the slag in the metal melt can be reduced to enter the stable section 155b, and the quality of the powder produced by the powder atomization equipment is improved; meanwhile, the flow resistance of the metal melt can be reduced, the production cost and the processing difficulty are reduced, the metal liquid column at the outlet of the overflow runner 155 is stable, and no metal corrosion phenomenon occurs at the thread.
Further, referring to fig. 1 to 8 in combination, in an embodiment of the present application, the outer circumferential surface of the first overflow head 151 is provided with a threaded section, and the threaded section of the first overflow head 151 is inserted into the installation groove 133 and is in threaded connection with the groove sidewall of the installation groove 133.
The side wall of the mounting groove 133 is provided with a threaded section, the outer circumferential surface of the first overflow head 151 is also provided with a threaded section, the threaded section of the first overflow head 151 is in threaded connection with the threaded section of the mounting groove 133, and the threaded connection can be sealed by using an alumina ceramic adhesive as required, or can be sealed by using other adhesives having the same property as the alumina ceramic adhesive, without limitation. The aluminum oxide ceramic adhesive is adopted for sealing between the threaded section of the first overflow head 151 and the threaded section of the mounting groove 133, so that the connection stability between the first overflow head 151 and the anti-blocking piece 13 is kept, the structural stability of the first overflow head and the anti-blocking piece is also kept, and the liquid leakage at the joint in the metal melt conveying process can be avoided.
Further, referring to fig. 2 and 9 in combination, in an embodiment of the present application, the second overflow head 153 is provided with a positioning groove 153a, the overflow channel 155 is opened on the bottom wall of the positioning groove 153a, the side wall of the positioning groove 153a is provided with a threaded section, and the flow guide pipe 11 is configured to be threaded to the threaded section of the positioning groove 153 a.
When the risk of blockage of the flow guide device caused by slag and other factors of the conveyed metal melt is low, the second overflow head 153 can be directly assembled with the flow guide pipe 11 without the anti-blocking piece 13, and the production cost can be reduced by the arrangement.
The groove side wall of the positioning groove 153a is provided with a thread section which can be in threaded connection with the guide pipe 11, and the threaded connection part can be sealed by an alumina ceramic adhesive according to requirements, so that the connection stability between the second overflow head 153 and the guide pipe 11 is kept, the structural stability of the second overflow head and the guide pipe is also kept, and the liquid leakage at the connection part in the metal melt conveying process can be avoided.
With combined reference to fig. 1 to 10, further, in an embodiment of the present application, the overflow flow channel 155 further includes an expanding section 155c, the expanding section 155c communicates with an end of the stabilizing section 155b away from the transition section 155a, and a cross-sectional area of the expanding section 155c gradually increases from an outlet of the stabilizing section 155b to a direction away from the draft tube 11.
It will be appreciated that the provision of the expanded section 155c improves the stability of the metal melt jet and also prevents the melt from adhering to the end face of the outlet of the overflow member 15, thereby achieving a better effect in guiding the metal melt.
Referring to fig. 1 to 10, in an embodiment of the present application, the flow guide tube 11 may be configured as follows:
the opposite ends of the draft tube 11 are provided with a liquid inlet 113 and a liquid outlet 115, and the outer surfaces of the opposite ends of the draft tube 11 are provided with thread sections which are respectively screwed on the side walls of the tundish and the mounting groove 133.
The liquid inlet 113 and the liquid outlet 115 are arranged at the two opposite ends of the flow guide pipe 11, so that the metal melt can be guided more conveniently; the outer surface thread sections arranged at the two opposite ends of the flow guide pipe 11 can be connected with the tundish, so that the flow guide device is fixed and supported; the other end can be connected with the thread section of the mounting groove 133, so that the structural stability of the flow guide pipe 11 and the anti-blocking piece 13 is kept, and the liquid leakage at the joint in the metal melt conveying process can be avoided.
Referring to fig. 1 and 11 in combination, in an embodiment of the present application, the insulation structure 30 may be configured as follows:
the heat preservation structure 30 comprises a heat preservation layer 31, a protective shell 33, a sealing element 35 and a heating assembly, wherein the heat preservation layer 31 is sleeved on the periphery of the flow guide nozzle 10; the protective shell 33 is sleeved on the periphery of the heat-insulating layer 31; the sealing member 35 is arranged between the heat insulating layer 31 and the protective shell 33 and is positioned at the lower end of the heat insulating layer 31; the heating assembly comprises an induction coil 37 and a power supply, two ends of the induction coil 37 are connected to the power supply, and the induction coil 37 is annularly arranged on the periphery of the protective shell 33.
When the diversion nozzle 10 is made of good conductors such as graphite, the heat insulation structure 30 adopts an induction heating mode, and a heat insulation layer 31 and a protective shell 33 are filled between the induction coil 37 and the diversion nozzle 10; insulating layer 31 closely laminates water conservancy diversion mouth 10, and the protective housing 33 cover is established in the periphery of insulating layer 31, and sealing member 35 seals the bottom terminal surface of protective housing 33, and induction coil 37 encircles the periphery at protective housing 33. It is to be understood that the insulating material of the insulating layer 31 may be selected from high temperature resistant asbestos; the protective shell 33 is made of high temperature resistant plastic, and prevents the heat insulating materials such as asbestos fiber from polluting the prepared metal powder, and in the embodiment, the protective shell can be selected to be made of polyimide material; the protective shell 33 can be selected to be cylindrical, the sealing element 35 can be selected to be a ceramic sealing ring, the induction coil 37 can be selected to be a copper tube, and the power supply can be selected to be a medium-frequency induction power supply.
Referring to fig. 1 and 11 in combination, in an embodiment of the present application, when the guiding nozzle 10 is made of an insulating material such as alumina ceramic, a conformal graphite sleeve is used to tightly adhere to the guiding nozzle 10, an induction heating manner is adopted to heat the graphite sleeve, the graphite sleeve heats the guiding nozzle 10 through a heat conduction manner, and a thermal insulation material and a protective shell 33 are filled between the graphite sleeve and the induction coil 37.
When the flow guide nozzle 10 is made of insulating materials such as alumina ceramics, the flow guide pipe 11 can be heated in a resistance heating mode, and the outer surface of the resistance heating body is wrapped by the heat insulation material and the protective shell 33.
Referring to fig. 1 to 10, in an embodiment of the present application, a length of the flow guide tube 11 is defined as a, and satisfies a relationship: a is more than or equal to 50mm and less than or equal to 1000mm.
The length of the draft tube 11 ranges from 50mm to 1000mm, for example, the length of the draft tube 11 can be 50mm, 150mm, 200mm, 303mm, 496mm, 580mm, 690mm, 790mm, 1000mm, or any value within the length range, and the length of the draft tube 11 can be determined according to the spatial layout and process of the powder atomization device. When the length value of honeycomb duct 11 was in this embodiment and sets for the interval, can satisfy the demand of metal melt long distance water conservancy diversion, reduced the flow degree of difficulty and the jam risk of metal melt to the high quality of the powder of powder atomizing equipment preparation has been kept. In this embodiment, the length of the flow guide tube 11 may be 303mm.
Referring to fig. 1 to 10 in combination, in an embodiment of the present application, the length of the thread section of the flow guide tube 11 near the liquid inlet 113 is defined as B, and satisfies the following relationship: b is more than or equal to 10mm and less than or equal to 50mm.
The length of the threaded section of the flow guide tube 11 close to the liquid inlet 113 ranges from 10mm to 50mm, for example, the length of the threaded section of the flow guide tube 11 close to the liquid inlet 113 may be 10mm, 11mm, 12mm, 13mm, 25mm, 35mm, 46mm, 50mm, and may also be any value within this length range. When the length value of the thread section of the flow guide pipe 11 close to the liquid inlet 113 is within the set interval of the embodiment, the connection between the flow guide pipe 11 and the tundish can be more stable, so that the structural stability of the flow guide nozzle 10 is maintained, and the process of guiding the metal melt can be smoother. It is understood that the length of the thread section of the flow guide tube 11 close to the liquid inlet 113 can be selected according to the length of the flow guide tube 11, and the thread length most suitable for the flow guide tube 11 can be selected within the above range of values. In this embodiment, the thread segment may be selected to be an M30 thread with a length of 18mm.
With reference to fig. 1 to 10, in an embodiment of the present application, the length of the threaded section of the flow guiding tube 11 near the liquid outlet 115 is defined as C, and satisfies the relationship: c is more than or equal to 5mm and less than or equal to 20mm.
The length of the thread section of the flow guide tube 11 close to the liquid outlet 115 ranges from 5mm to 20mm, for example, the length of the thread section of the flow guide tube 11 close to the liquid inlet 113 may be 5mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 20mm, but may also be any value within the length range. When the length value that honeycomb duct 11 is close to the screw thread section of liquid outlet 115 is in this embodiment and sets for the interval, can make honeycomb duct 11 and prevent that the connection between the jam member 13 is more firm to kept the structural stability of water conservancy diversion mouth 10, also made at the in-process of water conservancy diversion metal melt, honeycomb duct 11 and the junction between the jam member 13 can not the weeping. In this embodiment, the thread segment may be selected to be an M40 thread with a length of 15mm.
With combined reference to fig. 1 to 10, in an embodiment of the present application, the height of the anti-blocking member 13 is defined as D, satisfying the relationship: d is more than 0mm and less than or equal to 20mm.
The height of the anti-blocking member 13 ranges from 0mm to 20mm, for example, the height of the anti-blocking member 13 may be 1mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 20mm, but may be any value within the height range. When the height value of the anti-blocking member 13 is within the setting range of the present embodiment, the flow resistance of the metal melt can be reduced, so that the metal melt can flow more smoothly in the overflow channel 131. It can be known that the maximum hydraulic radius of each overflow channel 131 in any horizontal section of the anti-blocking piece 13 in the height direction is not more than 2 times of the inner diameter of the overflow channel 155, so that small-size slag blocking the overflow channel 155 can be blocked, and the risk of the whole blockage of the flow guide nozzle 10 is reduced.
With combined reference to fig. 1, 2, 8, 9 and 10, in an embodiment of the present application, the length of the transition section 155a is defined as E, and satisfies the relationship: e is more than 0mm and less than or equal to 40mm.
The length of the transition section 155a ranges between 0mm and 40mm, for example, the length of the transition section 155a may be 1mm, 7mm, 22mm, 33mm, 34mm, 35mm, 36mm, 40mm, although any value within the length range may be used. It is understood that the transition section 155a may be structurally designed according to process requirements and fluid mechanics principles.
With combined reference to fig. 1, 2, 8, 9, and 10, in an embodiment of the present application, the length of the stabilizing section 155b is defined as F, and the relationship is satisfied: f is more than 0mm and less than or equal to 20mm.
The length of the stabilizing section 155b may range from 0mm to 20mm, for example, the length of the stabilizing section 155b may be 1mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 20mm, although any value within the length range may be used.
As is clear from the above, the height of the overflow 15 does not exceed 60mm, and the height of the overflow 15 may be 1mm, 34mm, 35mm, 36mm, 40mm, 55mm, or 60mm, for example, but may be any value within this height range. When the height of the overflow piece 15 is within the set interval of the embodiment, the flow resistance of the metal melt can be reduced, and the machining difficulty and the machining cost can also be reduced. It will be appreciated that the overflow member 15 is where the greatest risk of blockage of the nozzle 10 occurs and the greatest relative increase in the size of the overflow channel 155 due to erosion by the melt scour, and that limiting the overall height also reduces the loss of replacement of the overflow member 15 due to an enlarged size of the overflow channel 155.
With combined reference to fig. 1, 2, 8, 9 and 10, in an embodiment of the present application, an inner diameter of the stabilizing section 155b is defined as G, and satisfies a relationship: g is more than 0mm and less than or equal to 2mm.
The inner diameter of the stabilizing section 155b may range between 0mm and 2mm, for example, the inner diameter of the stabilizing section 155b may be 0.1mm, 0.5mm, 0.56mm, 0.58mm, 1.55mm, 1.56mm, 1.79mm, 2mm, although any value within this inner diameter range is also possible. The hydraulic radius of each overflowing flow channel 131 in any horizontal section along the height direction of the anti-blocking piece 13 is not more than 2 times of the inner diameter of the stable section 155b to the maximum extent, so that small-size slag blocking an overflowing hole of the flow guide nozzle 10 can be blocked, and the risk of overall blocking of the flow guide nozzle 10 is reduced.
Referring collectively to fig. 1-10, in one embodiment of the present application, the transition section 155a may be selected to be 7mm in length, the stabilizing section 155b may be selected to be 12mm in length, the expanding section 155c may be selected to be 4mm in length, the stabilizing section 155b may be selected to be 0.9mm in inner diameter, and the expanding section 155c may be selected to be 2mm in exit end radius. The expansion section 155c is arranged to improve the stability of the aluminum alloy melt jet flow and prevent the aluminum liquid from adhering to the end face of the outlet of the flow guide nozzle 10.
With reference to fig. 1 to 10, in an embodiment of the present application, a wall thickness of the flow guiding tube 11 in a horizontal section is defined as H, which satisfies the relationship: h is more than or equal to 2mm and less than or equal to 10mm.
The wall thickness of the horizontal section of the draft tube 11 ranges from 2mm to 10mm, for example, the wall thickness of the horizontal section of the draft tube 11 may range from 2mm, 4mm, 6mm, 7mm, 8mm, 9mm, 9.5mm, 10mm, although any value within the range may be used. When the pipe wall thickness of the horizontal section of the draft tube 11 is within the set interval of the embodiment, the draft tube 11 can be prevented from being crushed due to the overlarge pressure of the metal melt, and meanwhile, the weight of the draft tube 11 can be within the appropriate interval, so that the connection stability of the draft tube 11 and the tundish cannot be influenced.
Referring to fig. 1 to 10, in an embodiment of the present application, the height of the flow channel 131 is defined as I, and the relationship is satisfied, I is greater than 0mm and less than or equal to 10mm.
The height of the flow channel 131 ranges from 0mm to 10mm, for example, the height of the flow channel 131 may be 1mm, 2mm, 3.3mm, 4.4mm, 5.5mm, 6mm, 7mm, 10mm, or any value within the height range. When the height of the flow passage 131 is within the setting range of the embodiment, the metal melt can flow more smoothly in the flow passage 131.
Referring to fig. 1 to 11, in an embodiment of the present application, a thickness of the insulating layer 31 is defined as J, and satisfies the relationship: j is more than or equal to 20mm.
The thickness of the insulating layer 31 is greater than 20mm, for example, the thickness of the insulating layer 31 may be 20mm, 30mm, 50mm, 60mm, 70mm, 78mm, 86mm, 100mm, or any value within the thickness range. When the thickness of heat preservation 31 is in this embodiment setting interval, can make the metal melt keep the state of fuse-element, can not the metal melt can follow the flow cooling and block up water conservancy diversion mouth 10, also can satisfy the demand of energy-conservation simultaneously.
Referring to fig. 1 to 10, in an embodiment of the present application, the length of the threaded segment defining the positioning groove 153a is K, which satisfies the relationship: k is more than or equal to 5mm and less than or equal to 20mm.
The length of the threaded segment of the positioning groove 153a ranges from 5mm to 20mm, for example, the length of the threaded segment of the positioning groove 153a may be 5mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 20mm, but may be any value within the length range. In this embodiment, the overflow member 15 can be selected as the second overflow head 153, and the threaded section of the positioning groove 153a can be selected as M40, and the length thereof can be selected as 10mm; the cross section of the transition section 155a is an inverted frustum, the inlet of the frustum is overlapped with the outlet of the conveying flow channel 111, and the outlet of the frustum is overlapped with the inlet of the stabilizing section 155 b; the outer wall surface of the transition section 155a adopts a cylindrical surface structure with the same diameter, the diameter of the cylindrical surface can be 62mm, and the length can be 15mm, so that stress concentration is prevented; the outer wall surface of the stabilizing section 155b is formed by compounding an inverted cone table top and a cylindrical surface, the cone angle can be selected to be a cone angle of 60 degrees, the height of the inverted cone table top can be selected to be 6mm, and the height of the cylindrical surface can be selected to be 4mm; the inner diameter of the stabilizing section 155b may optionally be 1.8mm; the length of the transition section 155a can be selected to be 7mm; the length of the stabilizing section 155b may be selected to be 8mm.
It can be understood that the threaded section of the positioning slot 153a and the threaded section of the flow guide tube 11 near the liquid outlet 115 can cooperate with each other to support the flow guide tube 11 and the second overflow head 153, so that the connection between the second overflow head 153 and the flow guide tube 11 can be more stable when the length of the threaded section of the positioning slot 153a is within the set range of the embodiment.
The invention also provides powder atomization equipment which comprises a tundish and the combined anti-blocking flow guide device 100, wherein the combined anti-blocking flow guide device 100 is connected with the tundish.
The combined anti-clogging flow guide device 100 is connected to a tundish, metal melt is poured into the tundish, and the metal melt enters the combined anti-clogging flow guide device 100 from the tundish, so that jet flow is formed. Through connecting combination formula anti-clogging guiding device 100 in the middle package, can make the connection between combination formula anti-clogging guiding device 100 and the middle package more firm, the powder quality of powder atomizing equipment preparation also can improve. The specific structure of the powder atomization device in the present application refers to the above embodiments, and since the powder atomization device adopts all technical solutions of all the above embodiments, all beneficial effects brought by the technical solutions of the above embodiments are at least achieved, and are not repeated here.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (12)
1. The utility model provides a modular prevent blockking up guiding device for carry the metal melt in powder atomization plant, powder atomization plant includes middle package, its characterized in that, modular prevent blockking up guiding device includes water conservancy diversion mouth and insulation construction, the insulation construction cover is located the periphery of water conservancy diversion mouth, the water conservancy diversion mouth includes:
the flow guide pipe is connected to the tundish and forms a conveying flow channel;
the anti-blocking piece is detachably connected to the flow guide pipe and provided with at least two flow passages communicated with the conveying flow passage; and
the overflow piece, the overflow piece is equipped with the overflow runner, the overflow piece can dismantle connect in prevent stifled plug member, the overflow runner with the transport flow way passes through the overflow runner intercommunication.
2. The combined anti-clogging flow guide device according to claim 1, wherein the anti-clogging member has two opposite mounting grooves, the two mounting grooves are connected through the flow passage, and the flow guide tube and the overflow member are detachably inserted into the two mounting grooves, respectively.
3. The combined anti-clogging flow guide device of claim 2, wherein at least two of said flow passages are uniformly spaced along the axial center of said anti-clogging element.
4. The combined anti-clogging flow guide device of claim 2, wherein the overflow member comprises at least a first overflow head and a second overflow head, the first overflow head is detachably connected to the mounting groove, and the second overflow head is detachably connected to the flow guide tube;
the first overflow head and the second overflow head are both provided with the overflow flow channel, the overflow flow channel comprises a transition section and a stable section, the transition section is communicated with the stable section and the overflow flow channel, the cross-sectional area of the transition section is gradually reduced from the overflow flow channel to the stable section, and the cross-sectional area of the stable section is kept unchanged.
5. The combined anti-clogging flow guide device of claim 4, wherein the first overflow head has a threaded section on its outer circumferential surface, and the threaded section of the first overflow head is inserted into the mounting groove and is in threaded connection with the groove sidewall of the mounting groove.
6. The combined anti-clogging diversion device of claim 4, wherein said second overflow head has a positioning slot, said overflow channel opens on the bottom wall of said positioning slot, the side wall of said positioning slot has a threaded section, and said diversion tube is adapted to be threaded to said threaded section of said positioning slot.
7. The combined anti-clogging flow guide device of claim 4, wherein the overflow channel further comprises an expanding section, the expanding section is communicated with one end of the stabilizing section, which is away from the transition section, and the cross-sectional area of the expanding section gradually increases from the outlet of the stabilizing section to the direction away from the flow guide tube.
8. The combined anti-clogging flow guide device of claim 5, wherein the flow guide tube has a liquid inlet and a liquid outlet at opposite ends thereof, and the flow guide tube has screw thread sections on outer surfaces of the opposite ends thereof and is respectively screwed to the tundish and the side wall of the mounting groove.
9. The combined anti-clogging flow guide device of claim 8, wherein the thermal insulation structure comprises:
the heat insulation layer is sleeved on the periphery of the flow guide nozzle;
the protective shell is sleeved on the periphery of the heat insulation layer;
the sealing element is arranged between the heat insulation layer and the protective shell and is positioned at the lower end of the heat insulation layer; and
heating element, heating element includes induction coil and power, induction coil's both ends are connected in the power, induction coil encircles and locates the periphery of protective housing.
10. The combined anti-clogging flow guide device of claim 9, wherein the length of the flow guide tube is defined as A, and the following relation is satisfied: a is more than or equal to 50mm and less than or equal to 1000mm;
and/or, the length of the thread section of the flow guide pipe close to the liquid inlet is defined as B, and the following relation is satisfied: b is more than or equal to 10mm and less than or equal to 50mm;
and/or, the length of the thread section of the flow guide pipe close to the liquid outlet is defined as C, and the following relation is satisfied: c is more than or equal to 5mm and less than or equal to 20mm;
and/or, defining the height of the anti-blocking part as D, and satisfying the relation: d is more than 0mm and less than or equal to 20mm;
and/or, defining the length of the transition section as E, and satisfying the relation: e is more than 0mm and less than or equal to 40mm;
and/or, defining the length of the stable section as F, and satisfying the relation: f is more than 0mm and less than or equal to 20mm;
and/or, defining the inner diameter of the stabilizing section as G, and satisfying the relation: g is more than 0mm and less than or equal to 2mm;
and/or defining the thickness of the pipe wall of the horizontal section of the guide pipe as H, and satisfying the relation: h is more than or equal to 2mm and less than or equal to 10mm;
and/or defining the height of the overflowing flow channel as I, wherein the I is more than 0mm and less than or equal to 10mm;
and/or defining the thickness of the heat-insulating layer as J, and satisfying the relation: j is more than or equal to 20mm.
11. The combined anti-clogging diversion device of claim 6, wherein the length of the threaded section defining said positioning slot is K, which satisfies the relationship: k is more than or equal to 5mm and less than or equal to 20mm.
12. A powder atomising device comprising a tundish and a combined anti-clogging flow guide device as claimed in any one of claims 1 to 11, in which the combined anti-clogging flow guide device is connected to the tundish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210882869.8A CN115253331A (en) | 2022-07-25 | 2022-07-25 | Combined anti-blocking flow guide device and powder atomization equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210882869.8A CN115253331A (en) | 2022-07-25 | 2022-07-25 | Combined anti-blocking flow guide device and powder atomization equipment |
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| CN115253331A true CN115253331A (en) | 2022-11-01 |
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| CN202210882869.8A Pending CN115253331A (en) | 2022-07-25 | 2022-07-25 | Combined anti-blocking flow guide device and powder atomization equipment |
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