Energy-saving gas atomization device for preparing powder with stable particle size distribution

Abstract

The invention relates to the technical field of metal powder preparation, and discloses an energy-saving gas atomization device for preparing powder with stable particle size distribution, the energy-saving gas atomization device comprises an atomization tank, the top of the atomization tank is provided with a tundish and a heat preservation cover, and the tundish is located in the heat preservation cover; the flow guide pipes are distributed at the top of the atomization tank in an annular array manner; and the atomization assembly is located at the top of the atomization tank. The energy-saving gas atomization device capable of preparing the powder with stable particle size distribution can effectively solve the problems that in the prior art, when a tundish is blocked, equipment operation needs to be stopped, after the tundish is emptied, a flow guide pipe connected with the tundish is manually disassembled, cleaned or replaced, and due to the fact that the tundish and the flow guide pipe are both in a high-temperature state, the flow guide pipe cannot be replaced. The problems that due to the fact that the flow guide pipe is inconvenient to disassemble and assemble, time is consumed much, the preparation efficiency of gas atomization equipment is reduced, the flow guide pipe needs to be preheated again to be used after being reinstalled, and use is not energy-saving enough are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal powder preparation, and in particular to an energy-saving aerosolization device for preparing powder with stable particle size distribution. Background Art

[0002] When preparing metal powder, the early atomization technology used an unrestricted (also called free-fall) atomizing nozzle. The characteristic of this atomizing nozzle is that the molten metal or alloy liquid flow will freely fall a certain distance in the direction of gravity before being hit by the atomizing gas, and the resulting particles are relatively coarse. Although its nozzle design is simple, its atomization ability is poor and it is only suitable for the production of alloy powders with larger particle sizes. Based on the unrestricted nozzle, the restricted atomizing nozzle was subsequently developed. The biggest feature of this nozzle is its compact structure, which greatly shortens the action distance between the gas and the melt, reduces the loss of gas kinetic energy, and can produce finer powders, which significantly improves the atomization efficiency.

[0003] In the traditional metal smelting process, slag is produced. If the slag is not cleaned up, it will flow into the tundish with the molten metal and cause the guide tube to be blocked. When the external temperature is low, after the molten metal enters the tundish, the molten metal will solidify in the guide tube, resulting in tundish blockage. Since the tundish is fixedly connected to the guide tube, when tundish blockage occurs, the equipment needs to be stopped and the tundish must be emptied. The guide tube connected to the tundish must be manually disassembled, cleaned or replaced. Since both the tundish and the guide tube are in a high temperature state, the disassembly and installation of the guide tube is inconvenient and time-consuming, which reduces the preparation efficiency of the aerosolization equipment. In addition, the guide tube needs to be preheated after reinstallation before it can be put into use, which is not energy-efficient. Summary of the Invention

[0004] Technical problems solved

[0005] In response to the above-mentioned shortcomings of the prior art, the present invention provides an energy-saving aerosolization device for preparing powders with stable particle size distribution, which can effectively solve the problem in the prior art that when blockage occurs, the equipment needs to be stopped, the intermediate ladle is emptied, and the guide tube connected to the intermediate ladle is manually disassembled, cleaned or replaced. Since both the intermediate ladle and the guide tube are in a high-temperature state, the disassembly and installation of the guide tube is inconvenient and time-consuming, which reduces the preparation efficiency of the aerosol equipment. In addition, the guide tube needs to be preheated again after reinstallation before it can be put into use, which is not energy-efficient.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides an energy-saving aerosolization device for preparing powder with stable particle size distribution, comprising:

[0009] An atomizing tank, wherein a tundish and a heat-insulating cover are provided on the top of the atomizing tank, and the tundish is located inside the heat-insulating cover;

[0010] The guide tubes are distributed in a circular array on the top of the atomizer tank;

[0011] an atomizing assembly, located on the top of the atomizing tank, for atomizing the molten metal discharged from the guide pipe;

[0012] The lifting assembly is located at the top of the atomizing tank and is used to drive the draft tube and the tundish away from the atomizing assembly, and to drive the tundish to separate from the lifting assembly;

[0013] A replacement assembly is located on the top of the atomizing assembly and is used to drive the plurality of guide tubes to connect with the atomizing tank and the tundish in sequence;

[0014] Among them, the atomization assembly includes an atomization head with an annular air cavity inside, a pipe hole for assembling a guide tube is opened on the inside of the atomization head, an annular seam is provided on the outside of the pipe hole at the bottom of the atomization head, and a mounting plate is fixedly provided on the top of the atomization head, and the mounting plate is fixedly installed on the top of the atomization tank.

[0015] Furthermore, the atomizing assembly further comprises a fixing sleeve, and the outer side of the fixing sleeve is provided with a thread parallel to the axial direction;

[0016] The replacement assembly includes a collar slidably mounted on the outside of the fixed sleeve, a Z-shaped plate rotatably arranged on the outside of the collar, the Z-shaped plates being distributed in an annular array on the outside of the collar, and a U-shaped plate for supporting the guide tube being fixedly arranged at one end of the Z-shaped plate;

[0017] The collar slides along the axis driven by the lifting assembly, and the Z-shaped plate rotates in sequence driven by a motor, and the motor is fixedly arranged on the outside of the atomizer tank.

[0018] Furthermore, a wedge-shaped block B is fixedly provided on the outer side of the collar;

[0019] The lifting assembly includes a hydraulic push rod A fixedly arranged on the outside of the atomizing tank, the driving end of the hydraulic push rod A is fixedly connected to the tundish through a clamping plate, a wedge block A is slidably arranged on the inside of the clamping plate, the wedge block A is slidably arranged on the outside of the column, and the column is fixedly installed on the outside of the atomizing tank. The wedge block A is located below the wedge block B and is used to drive the collar to rise to a certain height and then automatically separate from the wedge block B;

[0020] The atomization assembly also includes a support member located at the bottom of the collar, which is rotatably mounted on the top of the mounting plate. The support member automatically triggers a supporting action when the collar rises to a certain height, and the support member is driven to automatically reset when the wedge block A is reset.

[0021] Furthermore, it also includes a blocking assembly, which includes a support arm, both ends of which are slidably arranged on the outside of the column through slides, a blocking block is fixedly arranged at the bottom of the support arm through a vertical rod, and the blocking block cooperates with the bottom of the tundish, and a counterweight is fixedly arranged on the top of the support arm;

[0022] A hydraulic push rod B is fixedly provided on the outside of the clamping plate, which is used to drive the support arm to drive the block away from the inside of the tundish.

[0023] Furthermore, one end of the support member is rotatably connected to the mounting plate via a bearing plate, and the other end of the support member is rotatably provided with a roller;

[0024] In which, the bearing plate automatically rotates upward to a certain angle under the torsion force of the torsion spring to trigger the supporting action, and the support member is reversed to release the supporting action under the drive of the push block. The push block pushes the support member to rotate under the drive of the wedge block A, and the push block is slidably set at the bottom of the ring.

[0025] Furthermore, the replacement assembly further comprises a rotating ring, the rotating ring being rotatably arranged on the outside of the collar, the inner side of the rotating ring being provided with a V-shaped groove with the tip facing upward, the inner side of the rotating ring being provided with horizontal grooves at both ends of the V-shaped groove, and the rotating ring being rotated by the drive of the motor;

[0026] A ball seat is fixedly provided on one end of the Z-shaped plate away from the guide pipe, and the ball seat is located at the bottom of the V-shaped groove and the horizontal groove.

[0027] Furthermore, it also includes an anti-deflection component, which includes a sliding rod inserted on both sides of the V-shaped groove, a counterweight rod is fixedly provided on the end of the sliding rod away from the guide tube, a fixing plate is slidingly provided on the outside of the sliding rod, and the fixing plate is fixedly provided on the outside of the U-shaped plate, a spiral groove is opened on the outside of the sliding rod, and a ball bearing is fixedly provided on the inner side of the fixing plate corresponding to the spiral groove.

[0028] Furthermore, a limiting hole is provided on the outside of the counterweight rod with the axis of the slide rod as the center, a limiting rod is fixedly provided on the outside of the fixing plate, and the limiting rod is slidably installed on the inside of the limiting hole, and the central angle corresponding to the limiting hole is less than 90°.

[0029] Furthermore, a tapered rod is fixedly provided at one end of the slide rod close to the guide tube. The tapered rod is driven by the slide rod to telescopically slide on both sides of the U-shaped plate to limit the guide tube.

[0030] Furthermore, the guide pipe includes a liquid outlet pipe, which is located inside the pipe hole. Two frustums are symmetrically arranged on the top of the liquid outlet pipe. The two frustums are matched with the middle package and the atomizing head respectively, and the two frustums are located on the upper and lower sides of the U-shaped plate.

[0031] Beneficial effects

[0032] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0033] The present invention is provided with a lifting assembly that can lift the guide tube and the tundish upward when the guide tube needs to be replaced, so that the guide tube is separated from the inside of the tube hole. When the guide tube is at a certain height, the tundish is further lifted to separate the tundish from the guide tube. At this time, the space between the guide tube and the tundish is used to drive the guide tube to be automatically replaced by the replacement assembly. After replacement, the tundish and the guide tube are automatically reset by the lifting assembly, thereby achieving the effect of automatically replacing the guide tube, and the entire replacement process is carried out inside the insulation cover. The insulation cover can preheat several guide tubes, while reducing the heat loss inside the tundish, so that the guide tube can be put into use quickly after replacement, reducing the time consumed by manual replacement of the guide tube and re-preheating the guide tube, and making full use of the heat accumulated inside the insulation cover to preheat the guide tube, making the gas atomization device more energy-efficient; and in the gas atomization process, based on the principle of the restricted atomizing nozzle, the air flow blown out through the annular gap inside the atomizing head atomizes the molten liquid discharged from the guide tube to ensure the stability of the metal powder particle size distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0035] Figure 1 It is a three-dimensional structural diagram of an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure inside the heat preservation cover according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the bottom structure of the atomizing assembly according to an embodiment of the present invention;

[0038] Figure 4 This is a schematic top view of the structure of a replacement component according to an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the assembly structure of the lifting assembly and the replacement assembly according to an embodiment of the present invention;

[0040] Figure 6 This is a schematic structural diagram of a lifting assembly and a blocking assembly according to an embodiment of the present invention;

[0041] Figure 7This is a schematic diagram of the top structure of the atomizing assembly according to an embodiment of the present invention;

[0042] Figure 8 This is a schematic diagram of the assembly structure of the replacement component and the guide tube according to an embodiment of the present invention;

[0043] Figure 9 This is a schematic structural diagram of a lifting assembly according to an embodiment of the present invention;

[0044] Figure 10 A schematic diagram of the internal structure of a replacement component according to an embodiment of the present invention;

[0045] Figure 11 A schematic diagram of the bottom structure of a replacement component according to an embodiment of the present invention;

[0046] Figure 12 This is a schematic structural diagram of an anti-deflection assembly according to an embodiment of the present invention;

[0047] Figure 13 This is a schematic structural diagram of a blocking assembly according to an embodiment of the present invention;

[0048] Figure 14 for Figure 5 Schematic diagram of the enlarged structure at A in the middle;

[0049] Figure 15 for Figure 11 Schematic diagram of the enlarged structure at point B in the middle.

[0050] The numbers in the figure represent:

[0051] 1. Atomizing tank; 11. Tundish; 12. Insulation cover; 13. Sealing plate;

[0052] 2. Draft tube; 21. Liquid outlet pipe; 22. Cone; 23. Enclosure;

[0053] 3. Atomizer assembly; 31. Atomizer head; 32. Tube hole; 33. Annular seam; 34. Mounting plate; 35. Fixing sleeve; 36. Slide; 37. Conical groove; 38. Support member; 381. Bearing plate; 382. Roller; 383. Limit block; 384. Stop block; 385. Torsion spring;

[0054] 4. Lifting assembly; 41. Hydraulic push rod A; 42. Clamp; 43. Cross arm; 44. Column; 441. Inclined surface A; 442. Slide; 443. Bracket; 45. Wedge block A; 451. Inclined surface B; 452. Elastic sheet; 453. Slider; 454. Limit plate; 455. Inclined surface C; 46. Sliding sleeve; 47. Support plate; 48. Rotating plate; 49. Sliding pin; 410. Hydraulic push rod B;

[0055] 5. Replacement components; 51. Z-shaped plate; 52. U-shaped plate; 53. Swivel; 54. V-shaped groove; 55. Horizontal groove; 56. Ball seat; 57. Gear ring; 58. Gear; 59. Flower shaft; 510. Motor; 511. Collar; 512. Wedge block B; 513. Wedge block C; 514. Receiving groove; 515. Spring; 516. Baffle; 517. Push block; 518. Inclined surface D;

[0056] 6. Blocking assembly; 61. Support arm; 62. Slide plate; 63. Roller; 64. Vertical rod; 65. Blocking block; 66. Counterweight;

[0057] 7. Anti-bias assembly; 71. Sliding rod; 72. Counterweight rod; 73. Fixed plate; 74. Spiral groove; 75. Ball bearing; 76. Tapered rod; 77. Limit rod; 78. Limit hole; 79. Sphere. DETAILED DESCRIPTION

[0058] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0059] The present invention will be further described below with reference to the embodiments.

[0060] Example:

[0061] See also Figures 1-15 The present invention provides a technical solution: an energy-saving aerosolization device for preparing powder with stable particle size distribution, comprising:

[0062] Atomizing tank 1, with a tundish 11 and a heat-insulating cover 12 provided on the top of the atomizing tank 1, the tundish 11 being located inside the heat-insulating cover 12, and a retractable sealing plate 13 being movably provided on the outside of the heat-insulating cover 12 for replacing the internal guide tube 2 after opening the heat-insulating cover 12;

[0063] The flow guide tubes 2 are distributed in a circular array on the top of the atomizing tank 1;

[0064] The atomizing assembly 3 is located on the top of the atomizing tank 1 and is used to atomize the molten metal discharged from the guide pipe 2;

[0065] The lifting assembly 4 is located at the top of the atomizing tank 1 and is used to drive the guide tube 2 and the tundish 11 away from the atomizing assembly 3, and to drive the tundish 11 to separate from the lifting assembly 4;

[0066] The replacement component 5 is located on the top of the atomizing component 3 and is used to drive the plurality of guide tubes 2 to connect with the atomizing tank 1 and the tundish 11 in sequence;

[0067] Among them, the atomizing assembly 3 includes an atomizing head 31 with an annular air cavity inside, a tube hole 32 for assembling the guide tube 2 is opened on the inside of the atomizing head 31, an annular seam 33 is provided on the outside of the tube hole 32 at the bottom of the atomizing head 31, and a mounting plate 34 is fixedly provided on the top of the atomizing head 31, and the mounting plate 34 is fixedly installed on the top of the atomizing tank 1.

[0068] The atomizing assembly 3 further includes a fixing sleeve 35 , and a portion 36 is opened on the outer side of the fixing sleeve 35 parallel to the axial direction;

[0069] The replacement assembly 5 includes a collar 511 slidably mounted on the outside of the fixed sleeve 35. A Z-shaped plate 51 is rotatably mounted on the outside of the collar 511. The Z-shaped plates 51 are distributed in an annular array on the outside of the collar 511. A U-shaped plate 52 for supporting the guide tube 2 is fixedly mounted on one end of the Z-shaped plate 51.

[0070] The collar 511 slides along 36 under the drive of the lifting assembly 4 , and the Z-shaped plate 51 rotates in sequence under the drive of the motor 510 , which is fixedly arranged on the outside of the atomizer tank 1 .

[0071] A wedge block B512 is fixedly provided on the outside of the collar 511;

[0072] The lifting assembly 4 includes a hydraulic push rod A41 fixedly arranged on the outside of the atomizing tank 1. The driving end of the hydraulic push rod A41 is fixedly connected to the cross arm 43 through the clamping plate 42. The cross arm 43 is symmetrically fixed on the outside of the tundish 11. A wedge block A45 is slidably arranged on the inside of the clamping plate 42. The wedge block A45 is slidably arranged on the outside of the column 44. The column 44 is fixedly installed on the outside of the atomizing tank 1. The wedge block A45 is located below the wedge block B512 and is used to drive the collar 511 to rise to a certain height and then automatically separate from the wedge block B512;

[0073] The atomizing assembly 3 also includes a support member 38 located at the bottom of the collar 511, and the support member 38 is rotatably mounted on the top of the mounting plate 34. The support member 38 automatically triggers the supporting action when the collar 511 rises to a certain height, and the support member 38 is driven to automatically reset when the wedge block A45 is reset; specifically, a slope B451 is provided on the inner side of the wedge block A45, and a slope A441 is provided on the side of the column 44 away from the middle bag 11 corresponding to the slope B451. An elastic sheet 452 is also provided on the inner side of the wedge block A45, and the elastic sheet 452 is away from the side of the column 44 away from the slope A441. A slide groove 442 is provided on the side of the column 44 close to the elastic sheet 452. A bracket 443 for installing the thermal insulation cover 12 is fixedly provided on the top of the column 44, and the wedge block A45 is slidably mounted on the inner side of the sliding sleeve 46 through the outer slider 453, and the sliding sleeve 46 is fixedly provided on the inner side of the splint 42.

[0074] The sealing assembly 6 includes a support arm 61. Both ends of the support arm 61 are slidably mounted on the outside of the column 44 via a slide plate 62. A blocking block 65 is fixedly mounted on the bottom of the support arm 61 via a vertical rod 64. The blocking block 65 cooperates with the bottom of the tundish 11. A counterweight 66 is fixedly mounted on the top of the support arm 61.

[0075] A hydraulic push rod B410 is fixedly provided on the outside of the clamping plate 42, which is used to drive the support arm 61 to drive the block 65 away from the inside of the ladle 11; specifically, a sliding pin 49 is fixedly provided on the driving end of the hydraulic push rod B410, and the sliding pin 49 is slidably provided on the inside of the rotating plate 48. A support plate 47 is rotatably provided on one end of the rotating plate 48, and the support plate 47 is fixedly provided on the outside of the cross arm 43; a roller 63 is rotatably provided on the outside of the slide plate 62, and the roller 63 is located on the top of the rotating plate 48, and the slide plate 62 is slidably connected to the column 44 along the slide groove 442.

[0076] One end of the support member 38 is rotatably connected to the mounting plate 34 via a bearing plate 381 , and the other end of the support member 38 is rotatably provided with a roller 382 ;

[0077] The bearing plate 381 is automatically rotated upward by a certain angle by the torsion force of the torsion spring 385 to trigger the supporting action, and the support member 38 is reversed and released under the drive of the push block 517. The push block 517 pushes the support member 38 to rotate under the drive of the wedge block A45. The push block 517 is slidably set at the bottom of the ring 511. Specifically, a limit block 383 is fixedly set on the outside of the bearing plate 381, and a stop block 384 is fixedly set on the outside of the support member 38. Specifically, a receiving groove 514 is opened at the bottom of the ring 511, and a spring 515 is set inside the receiving groove 514. The spring 515 A baffle 516 is fixedly provided at the other end, and the baffle 516 is slidably provided on the inner side of the accommodating groove 514 and fixedly connected to the push block 517. A slope D518 is fixedly provided on the side of the push block 517 close to the wedge block A45, and the slope D518 is slidably provided on the inner side of the wedge block B512. A wedge block C513 is fixedly provided on the top of the slope D518. The wedge block C513 cooperates with the wedge block A45, and the slope D518 cooperates with the slope C455 on the top of the wedge block A45. A limiting plate 454 is fixedly provided on the side of the slider 453 close to the wedge block B512.

[0078] The replacement assembly 5 also includes a swivel 53, which is rotatably arranged on the outside of the collar 511. A V-shaped groove 54 with a pointed end facing upward is formed on the inside of the swivel 53. Horizontal grooves 55 are formed on the inside of the swivel 53 at both ends of the V-shaped groove 54. A gear ring 57 is fixedly provided on the outside of the swivel 53. A gear 58 is meshed with the outside of the gear ring 57. The gear 58 is rotatably mounted on the outside of the collar 511. A flower shaft 59 is axially slidably provided on the inside of the gear 58. The flower shaft 59 is rotatably arranged on the outside of the atomizer tank 1 and rotates under the drive of the motor 510.

[0079] A ball seat 56 is fixedly provided at one end of the Z-shaped plate 51 away from the guide tube 2 . The ball seat 56 is located at the bottom of the V-shaped groove 54 and the horizontal groove 55 .

[0080] It also includes an anti-deflection component 7, which includes a sliding rod 71 inserted on both sides of the V-shaped groove 54, a counterweight rod 72 is fixedly provided at one end of the sliding rod 71 away from the guide tube 2, and a ball 79 is fixedly provided at the other end of the counterweight rod 72, a fixing plate 73 is slidingly provided on the outer side of the sliding rod 71, and the fixing plate 73 is fixedly provided on the outer side of the U-shaped plate 52, a spiral groove 74 is opened on the outer side of the sliding rod 71, and a ball member 75 is fixedly provided on the inner side of the fixing plate 73 corresponding to the spiral groove 74.

[0081] A limiting hole 78 is provided on the outside of the counterweight rod 72 with the axis of the slide rod 71 as the center. A limiting rod 77 is fixedly provided on the outside of the fixing plate 73. The limiting rod 77 is slidably installed on the inside of the limiting hole 78. The central angle of the limiting hole 78 is less than 90°.

[0082] A tapered rod 76 is fixedly provided at one end of the slide rod 71 close to the guide tube 2 . Driven by the slide rod 71 , the tapered rod 76 telescopically slides on both sides of the U-shaped plate 52 to limit the guide tube 2 .

[0083] The guide pipe 2 includes a liquid outlet pipe 21, which is located inside the tube hole 32. Two frustums 22 are symmetrically arranged on the top of the liquid outlet pipe 21. The two frustums 22 match the tundish 11 and the atomizing head 31 respectively. A conical groove 37 is provided on the top of the atomizing head 31 to match the frustum 22. The two frustums 22 are located on the upper and lower sides of the U-shaped plate 52. A surrounding plate 23 is fixed on the top of the upper frustum 22 to accommodate a small amount of molten liquid remaining at the bottom of the tundish 11 when the tundish 11 is separated.

[0084] The principle and advantages of energy-saving atomization device for preparing powder with stable particle size distribution:

[0085] First, the smelted metal raw materials are received by the tundish 11, and the metal raw materials are discharged through the guide tube 2 at the bottom of the tundish 11. At this time, the atomizing head 31 sprays air flow through the annular gap 33 to atomize the molten metal, and the atomized metal particles fall inside the atomizing tank 1 and cool into powder, and finally the metal powder is processed by a collection device connected to the outside of the atomizing tank 1; in the process of preparing metal powder, when the air flow sprayed by the atomizing component 3 is stable, but the particle size of the metal powder is uneven, it may be that the guide tube 2 is blocked. If the guide tube 2 is replaced when the tundish 11 is emptied, the guide tube 2 and the tundish 11 are driven away from the atomizing component by the lifting component 4 3, so that the guide tube 2 is separated from the inside of the tube hole 32, and then the lifting component 4 continues to lift the tundish 11 to the top of the guide tube 2, so that there is sufficient space between the guide tube 2 and the tundish 11 for replacement; during replacement, the guide tube 2 to be replaced is driven by the replacement component 5 to rotate upward, and then the next guide tube 2 is driven to automatically rotate downward to align with the tube hole 32, and finally, the replaced guide tube 2 is installed in the inside of the tube hole 32 under the drive of the lifting component 4, and the tundish 11 is driven to automatically reset downward to align with the top of the guide tube 2, and under the squeezing action of the tundish 11, the guide tube 2 is sealed and assembled between the atomization component 3 and the tundish 11.

[0086] Its advantages are that the heat preservation cover 12 is used to keep the tundish 11 and the guide tube 2 warm, and several guide tubes 2 can be preheated by the stored heat during the preparation of metal powder, so that the guide tubes 2 can be put into use quickly after replacement, reducing the consumption of thermal energy; and when replacing, the lifting component 4 and the replacement component 5 cooperate to realize the disassembly, replacement and installation processes, thereby realizing the effect of automatic replacement of the guide tube 2, reducing the time consumed by manual operation, and improving the overall working efficiency of the device.

[0087] When the lifting assembly 4 in the energy-saving aerosol device for preparing powder with stable particle size distribution in the present application is in operation, the hydraulic push rod B410 first drives the sliding pin 49 to move downward, so that the sliding pin 49 releases the support for the rotating plate 48. At this time, the rollers 63 at both ends of the support arm 61 lose their support, and then the counterweight block 66 presses the support arm 61 downward through the slide plates 62 at both ends until the block 65 at the bottom of the vertical rod 64 is located at the bottom of the tundish 11. At this time, the tundish 11 is sealed to prevent the molten metal inside from flowing out when the tundish 11 is separated from the guide tube 2; then the hydraulic push rod A41 drives the cross arm 43 to lift the tundish 11 upward by pushing the clamping plate 42, so that the tundish 11 is first separated from the guide tube 2. At this time, the clamping plate 42 The plate 42 drives the wedge block A45 on the inner side of the sliding sleeve 46 to move upward and reach the bottom of the wedge block B512, so that the wedge block A45 drives the wedge block B512 to rise to a certain height. At this time, the collar 511 drives the guide tube 2 upward to separate from the inside of the pipe hole 32 through the Z-shaped plate 51. During the rising process of the wedge block B512, when one side of the wedge block A45 is aligned with the other side of the wedge block B512, as the wedge block A45 continues to move upward, the wedge block A45 presses the inclined surface D518 on the inner side of the wedge block B512 through the inclined surface C455 on the top, so that the wedge block A45 can move upward along the outer side of the wedge block B512. In addition, the support member 38 located on the top of the mounting plate 34 automatically rotates upward under the action of the torsion spring 385. When the inclined surface B451 on the inner side of the wedge block A45 slides to the outer side of the inclined surface A441, the wedge block A45 moves horizontally and gradually separates from the bottom of the wedge block B512. At this time, the stop block 384 on the outer side of the support member 38 presses against the outer side of the limit block 383, so that the support member 38 tilts to both sides. The collar 511 is normal, which is used to limit the guide tube 2 supported by the Z-shaped plate 51 to a certain height. Then, when the wedge block A45 is separated from the wedge block B512, the hydraulic push rod A41 continues to drive the tundish 11 to move upward to leave space for replacement; after the replacement assembly 5 replaces the guide tube 2, the hydraulic push rod A41 first drives the tundish 11 to move downward, and when the inclined surface B451 passes the inclined surface A441, the wedge block A45 is rotated. The wedge block C513 on the inner side of the wedge block B512 is gradually squeezed, causing the wedge block C513 to push the baffle 516 to slide inside the receiving groove 514. The push block 517 on the outer side of the baffle 516 pushes the support member 38 to rotate in the opposite direction. At this time, the wedge block A45 is located outside the wedge block B512, indicating that the replaced guide tube 2 is no longer in contact with the bottom of the tundish 11. As the support member 38 reverses and resets, it pushes the collar 511 upward by a small amount. After the wedge block A45 passes outside the wedge block B512, the elastic piece 452 causes the wedge block A45 to slide back inside the sliding sleeve 46 toward the bottom of the wedge block B512. At this time, the spring 515 inside the receiving groove 514 pushes the baffle 516 back to its original position.

[0088] Its advantage is that, driven by the hydraulic push rod A41, the wedge block A45 drives the collar 511 to slide upward along the fixed sleeve 35, thereby achieving the effect of separating the guide tube 2 inside the pipe hole 32, and automatically releasing the lifting of the collar 511 after the guide tube 2 is moved out of the pipe hole 32, and at the same time, the height of the collar 511 is limited by the support member 38 on the top of the mounting plate 34 to ensure the stability of the guide tube 2 before and after replacement; and the replacement component 5 can be disassembled from the atomizer component 3 through the collar 511, so that the replacement component 5 can be quickly disassembled separately when maintaining the equipment, and the atomizer component 3 is fixedly installed on the top of the atomizer tank 1 through the mounting plate 34, and can also be disassembled separately, which ensures the mutual cooperation between the atomizer component 3, the lifting component 4 and the replacement component 5 while facilitating disassembly and assembly, and also reduces the difficulty of controlling the device, making it more convenient to use.

[0089] When the guide tube 2 is replaced by the replacement component 5 in the energy-saving aerosol device for preparing a powder with a stable particle size distribution in the present application, the motor 510 drives the gear 58 on the outside of the flower shaft 59 to rotate, so that the gear 58 drives the rotating ring 53 to rotate on the outside of the ring 511 through the gear ring 57. When the rotating ring 53 rotates, it drives the V-shaped groove 54 to rotate to one side, so that the V-shaped groove 54 gradually presses down the ball seat 56 to drive the Z-shaped plate 51 to rotate upward, and then the other end of the Z-shaped plate 51 is rotated to one side through the guide tube 2 supported by the U-shaped plate 52, and the ball seat 56 is located in the horizontal groove 55. When the swivel 53 drives the V-groove 54 to move to the top of the next ball seat 56, the ball seat 56 will slide upward along the V-groove 54, thereby causing the Z-shaped plate 51 to rotate downward, aligning the guide tube 2 supported by the U-shaped plate 52 and placing it just above the pipe hole 32 for docking installation. Similarly, each time the swivel 53 rotates a certain angle, a replacement action can be achieved, thereby achieving the effect of automatically replacing the guide tube 2. It is worth noting that when the Z-shaped plate 51 rotates and tilts during replacement, the anti-deflection component 7 on the outside of the U-shaped plate 52 can The guide tube 2 is automatically positioned to prevent the guide tube 2 from being vibrated and deflected when the Z-shaped plate 51 ends its rotation. Specifically, as the Z-shaped plate 51 rotates, the U-shaped plate 52 gradually changes from a standing state to a horizontal state. At this time, the counterweight rod 72 always remains in a standing state under the action of its own gravity, and rotates relative to the U-shaped plate 52, so that the counterweight rod 72 drives the slide rod 71 to rotate on the inner side of the fixed plate 73. At this time, the ball member 75 on the inner side of the fixed plate 73 slides along the spiral groove 74 on the outer side of the slide rod 71, so that the slide rod 71 pushes the tapered rod 76 to guide the flow. When the U-shaped plate 52 is in the downward position, the spherical body 79 at the end of the counterweight rod 72 contacts the top of the mounting plate 34, and under the action of the limiting hole 78 and the limiting rod 77, the counterweight rod 72 in the standing state tilts to one side, and finally drives the counterweight rod 72 to be located on both sides of the U-shaped plate 52 again when the U-shaped plate 52 drops to the lowest position.

[0090] It is worth mentioning that the above replacement method has the following advantages:

[0091] Advantage 1: When the motor 510 drives the rotating ring 53 to rotate at a certain angle, the Z-shaped plate 51 can be driven to rotate in turn, so that several guide tubes 2 can be installed and used in turn.

[0092] Advantage 2: When the Z-shaped plate 51 rotates to drive the guide tube 2 to be replaced, the counterweight rod 72 can rotate relative to the U-shaped plate 52 by relying on its own gravity, so that when the U-shaped plate 52 changes from a standing state to a horizontal state, the counterweight rod 72 drives the sliding rod 71 to automatically limit the guide tube 2 on the inner side of the U-shaped plate 52 to prevent the guide tube 2 from being deflected by vibration.

[0093] Advantage three: when the counterweight rod 72 drives the slide rod 71 to limit the guide tube 2, the slide rod 71 pushes the tapered rod 76 toward the outside of the guide tube 2, and the tapered rod 76 rotates relatively while moving forward, thereby improving the squeezing and positioning effect of the guide tube 2.

[0094] Advantage four: when the U-shaped plate 52 changes from a standing state to a horizontal state, the tapered rod 76 limits the guide tube 2. When the U-shaped plate 52 is in the standing state, the tapered rod 76 is in a reset state, so that the opening of the U-shaped plate 52 in the standing state faces upward and is not affected by the tapered rod 76, so that the guide tube 2 inside the U-shaped plate 52 can be taken and placed.

[0095] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An energy-saving aerosol device for preparing powder with stable particle size distribution, characterized in that: include: An atomizing tank, wherein a tundish and a heat-insulating cover are provided on the top of the atomizing tank, and the tundish is located inside the heat-insulating cover; The guide tubes are distributed in a circular array on the top of the atomizer tank; an atomizing assembly, located on the top of the atomizing tank, for atomizing the molten metal discharged from the guide pipe; The lifting assembly is located at the top of the atomizing tank and is used to drive the draft tube and the tundish away from the atomizing assembly, and to drive the tundish to separate from the lifting assembly; A replacement assembly is located on the top of the atomizing assembly and is used to drive the plurality of guide tubes to connect with the atomizing tank and the tundish in sequence; Among them, the atomization assembly includes an atomization head with an annular air cavity inside, a pipe hole for assembling a guide tube is opened on the inside of the atomization head, an annular seam is provided on the outside of the pipe hole at the bottom of the atomization head, and a mounting plate is fixedly provided on the top of the atomization head, and the mounting plate is fixedly installed on the top of the atomization tank.

2. The energy-saving aerosolization device for preparing powder with stable particle size distribution according to claim 1, characterized in that: The atomizing assembly further comprises a fixing sleeve, the outer side of which is parallel to the axial direction; The replacement assembly includes a collar slidably mounted on the outside of the fixed sleeve, a Z-shaped plate rotatably arranged on the outside of the collar, the Z-shaped plates being distributed in an annular array on the outside of the collar, and a U-shaped plate for supporting the guide tube being fixedly arranged at one end of the Z-shaped plate; The collar slides along the axis driven by the lifting assembly, and the Z-shaped plate rotates in sequence driven by a motor, and the motor is fixedly arranged on the outside of the atomizer tank.

3. The energy-saving aerosolization device for preparing powder with stable particle size distribution according to claim 2, characterized in that: A wedge-shaped block B is fixedly provided on the outside of the collar; The lifting assembly includes a hydraulic push rod A fixedly arranged on the outside of the atomizing tank, the driving end of the hydraulic push rod A is fixedly connected to the tundish through a clamping plate, a wedge block A is slidably arranged on the inside of the clamping plate, the wedge block A is slidably arranged on the outside of the column, and the column is fixedly installed on the outside of the atomizing tank. The wedge block A is located below the wedge block B and is used to drive the collar to rise to a certain height and then automatically separate from the wedge block B; The atomization assembly also includes a support member located at the bottom of the collar, which is rotatably mounted on the top of the mounting plate. The support member automatically triggers a supporting action when the collar rises to a certain height, and the support member is driven to automatically reset when the wedge block A is reset.

4. The energy-saving aerosolization device for preparing powder with stable particle size distribution according to claim 3, characterized in that: The invention also includes a blocking assembly, which includes a support arm, both ends of which are slidably arranged on the outside of the column through slides, a blocking block fixedly arranged at the bottom of the support arm through a vertical rod, the blocking block cooperates with the bottom of the tundish, and a counterweight block is fixedly arranged on the top of the support arm; A hydraulic push rod B is fixedly provided on the outside of the clamping plate, which is used to drive the support arm to drive the block away from the inside of the tundish.

5. The energy-saving aerosolization device for preparing powder with stable particle size distribution according to claim 3, characterized in that: One end of the support member is rotatably connected to the mounting plate via a bearing plate, and the other end of the support member is rotatably provided with a roller; In which, the bearing plate automatically rotates upward to a certain angle under the torsion force of the torsion spring to trigger the supporting action, and the support member is reversed to release the supporting action under the drive of the push block. The push block pushes the support member to rotate under the drive of the wedge block A, and the push block is slidably set at the bottom of the ring.

6. The energy-saving aerosolization device for preparing powder with stable particle size distribution according to claim 2, characterized in that: The replacement assembly further includes a rotating ring, which is rotatably arranged on the outside of the collar, and has a V-shaped groove with the tip facing upward on the inside of the rotating ring, and horizontal grooves are formed on the inside of the rotating ring at both ends of the V-shaped groove, and the rotating ring rotates under the drive of the motor; A ball seat is fixedly provided on one end of the Z-shaped plate away from the guide pipe, and the ball seat is located at the bottom of the V-shaped groove and the horizontal groove.

7. The energy-saving aerosolization device for preparing powder with stable particle size distribution according to claim 2, characterized in that: It also includes an anti-deflection component, which includes sliding rods inserted on both sides of the V-shaped groove, a counterweight rod fixedly provided on the end of the sliding rod away from the guide tube, a fixing plate slidingly provided on the outside of the sliding rod, the fixing plate fixedly provided on the outside of the U-shaped plate, a spiral groove opened on the outside of the sliding rod, and a ball bearing fixedly provided on the inner side of the fixing plate corresponding to the spiral groove.

8. The energy-saving aerosolization device for preparing powder with stable particle size distribution according to claim 7, characterized in that: A limiting hole is provided on the outside of the counterweight rod with the axis of the slide rod as the center. A limiting rod is fixedly provided on the outside of the fixing plate. The limiting rod is slidably installed on the inside of the limiting hole. The central angle corresponding to the limiting hole is less than 90°.

9. The energy-saving aerosolization device for preparing powder with stable particle size distribution according to claim 7, characterized in that: A tapered rod is fixedly provided at one end of the slide rod close to the guide tube. The tapered rod is driven by the slide rod to telescopically slide on both sides of the U-shaped plate to limit the guide tube.

10. The energy-saving aerosolization device for preparing powder with stable particle size distribution according to claim 2, characterized in that: The guide pipe includes a liquid outlet pipe, which is located inside the pipe hole. Two frustums are symmetrically arranged on the top of the liquid outlet pipe. The two frustums are matched with the tundish and the atomizing head respectively, and the two frustums are located on the upper and lower sides of the U-shaped plate.

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