Equipment for preparing powder from bars

Abstract

The utility model relates to the technical field of bar atomization powder making, and provides equipment for preparing powder from bars, which comprises a bar feeding device, a melting chamber and an atomizing chamber, the bar feeding device is arranged at the top of the melting chamber and conveys the bars into the melting chamber, the atomizing chamber is arranged at the lower end of the melting chamber, and the bar feeding device comprises a bar feeder, a feeding bin and a transition bin. A rod feeding device is arranged on one side of the top of the transition bin, a feeding bin is arranged on the other side of the top of the transition bin, a rod pushing device and a feeding port are arranged on the feeding bin, a rod feeding deviation corrector is arranged at the lower end of the transition bin and located under the rod feeding device, a rod translator is arranged in the transition bin, a rod loading index plate is arranged in the feeding bin, and the rod feeding device conveys rods to a clamping device in the melting chamber. According to the scheme, continuous feeding of the raw material bars can be achieved through the bar feeding device, single-time adding is achieved without shutdown, vacuum feeding is achieved through the feeding bin in the continuous bar feeding process, impurities carried by the bars are reduced, impurity pollution is reduced, and the production quality of nano powder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rod material atomization powder making, in particular to a device for preparing powder from rod material. Background Art

[0002] ‌Currently, conventional materials used in atomization powder production include wire, powder, rod, and block. However, rods and blocks are added directly into the crucible in a single addition, and continuous production is impossible. Wires are continuously transported by rolling them into a melting furnace or atomization chamber and stretching them out, while rods cannot be rolled into bundles. This is also the biggest difference between wires and rods. The diameter of rods is usually in the range of 5-300mm, while the diameter of wires is in the range of 0.1-4.9mm. There are differences between different fields, and there is no clear dividing line between wires and rods. In addition, the specific surface area of ​​wires is larger than that of rods, and more impurities will be carried during the production process, while the chance of carrying impurities during the production process of rods will be less, which can improve the quality of the product. However, current equipment cannot achieve continuous production of nanopowders using rods, so this is a technical problem that urgently needs to be solved. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and to provide a device for preparing powder from rods, which uses rod raw materials to continuously produce nano powders, reduces impurity carryover, and improves product quality.

[0004] The technical solution of the utility model is: a device for preparing powder from rods, including a rod feeding device, a melting chamber and an atomization chamber, the rod feeding device is arranged at the top of the melting chamber and feeds the rods into the melting chamber, the lower end of the melting chamber is provided with an atomization chamber, the rod feeding device includes a rod feeder, a feeding bin and a transition bin, a rod feeder is provided on one side of the top of the transition bin, a feeding bin is provided on the other side, a rod pusher and a feeding port are provided on the feeding bin, a rod feeding corrector is provided at the lower end of the transition bin and is located directly below the rod feeder, a rod translator is provided in the transition bin, a rod loading indexing disc is provided in the feeding bin, and the rod feeder transports the rods to the clamping device in the melting chamber.

[0005] The advantage of this solution is that the rods are continuously fed by the rod feeding device, and vacuum transition is performed through the transition chamber during the feeding process, thereby reducing the impact of control on the rods. In addition, the feed bin is used to store rods, and multiple rods can be added at a time to reduce the number of times the feed bin is fed. The lower end of the rod is provided with an external thread, or the lower end of the rod is provided with an external thread, the upper end of the rod is provided with a blind hole, and a matching thread is provided in the blind hole, so that the rods can be connected together during the transportation into the melting chamber, and the problem of being squeezed out and directly falling by the upper end rod will not occur, thereby ensuring the continuous production of nano powder and the quality of the powder; in the utility model, the diameter of the rod is 5-50mm and the length is 100-1800mm.

[0006] Furthermore, the lower end of the bar is provided with an external thread, and the rod feeder is provided with a tapping tool for tapping the upper end of the bar with an internal thread, so that the rod is connected end to end through the thread during the process of entering the smelting chamber. Preferably, when the upper end of the bar is not provided with an internal thread, the rod can be tapped with an internal thread by a tapping tool. After the tapping is completed, the tapping tool does not withdraw, thereby achieving connection with the rod. At this time, the rod is pushed down together by the rod feeder, and the rod is rotated while pushing down so that the rod is threadedly connected to the rod at the lower end. At this time, the tapping tool is withdrawn and the rod feeder is retracted; when the upper end of the bar is provided with an internal thread, the tapping tool can correct the internal thread and at the same time connect the rod to the pusher, making it easier to push the rod downward. During the pushing process, the rod is also rotated so that the rod is threadedly connected to the rod at the lower end. At this time, the tapping tool is withdrawn and the rod feeder is retracted.

[0007] Furthermore, a vacuum ball valve is provided between the feed bin and the transition bin, and the feed bin is also provided with a pressure sensor and a vacuum pipe. Preferably, after the rods are added to the feed bin, the feed port and the vacuum ball valve are closed, and the feed bin is evacuated via the vacuum pipe. When the pressure on the pressure sensor reaches a set value, inert gas is introduced into the feed bin to ensure that its pressure is consistent with the pressure in the transition bin below. At this time, the vacuum ball valve is opened, and the rod pusher conveys the rods downward.

[0008] Furthermore, a vacuum isolation valve is provided between the rod-feeding corrector and the transition chamber. Preferably, the transition chamber is rectangular, and an inspection chamber door is hingedly provided at one end of the transition chamber, and the inspection chamber door is opened and closed by bolts. The provision of the vacuum isolation valve facilitates non-stop inspection and maintenance of the transition chamber. More preferably, the rod-feeding corrector includes a guide wheel and a correction wheel, the guide wheel is provided on a fixed plate in the rod-feeding corrector through a fixed shaft, and the fixed plates are fixedly connected by bolts and welded in the rod-feeding corrector; the guide wheel is located above the correction wheel, and the correction wheel includes a driving wheel and a driven wheel, the driving wheel is connected to the driving device on the outside of the rod-feeding corrector through a movable shaft, and is driven by a chain, and the driven wheel is provided on the other side of the driving wheel through a buffer spring, and the rod is transported downward from the middle of the guide wheel and the correction wheel; a guide sleeve is provided below the correction wheel; and an observation window is provided on one side of the rod-feeding corrector.

[0009] Furthermore, the indexing plate is driven by a feed motor located at the lower end of the feed bin. The feed motor drives the indexing plate to rotate intermittently once, and the next rod material reaches the bottom of the rod pusher.

[0010] Furthermore, the translator includes a drive motor, a rotating frame and a rotating rod. The drive motor is installed at the lower end of the transition bin and is connected to the rotating rod in the transition bin through a drive shaft. The rotating frame is installed and fixed on the rotating frame. At least one bracket is provided on the rotating frame. The rotating rod is located at the center of the rod feeder and the rod pusher. During the rotation process, the bracket can be located directly below the rod feeder and the rod pusher respectively.

[0011] Furthermore, a clamping device and a smelting coil are provided in the melting chamber. The clamping device is located directly below the rod feeder and the smelting coil is in a V-shaped spiral shape with a larger top and a smaller bottom. The smelting coil is connected to the external electrode outside the melting chamber through an insulating plate.

[0012] Furthermore, a conical molten steel transition chamber is provided between the melting chamber and the atomizing chamber, and a molten steel inlet is provided at the lower end of the molten steel transition chamber.

[0013] Furthermore, at least two plasma guns are provided on the atomizing chamber via a plasma gun seat, and the flame convergence point of the plasma guns is located directly below the molten steel inlet; the atomizing chamber has an interlayer wall, and cooling water flows in the interlayer wall.

[0014] The utility model has the following beneficial effects:

[0015] 1. The rod feeding device can realize continuous feeding of raw material rods without stopping the machine for single addition. During the continuous feeding process, vacuum feeding is realized through the feeding bin, which reduces the impurities carried by the rods;

[0016] 2. The rod feeding corrector on the rod feeding device can guide and correct the rods, effectively avoiding the problem of difficulty in feeding the rods due to bending;

[0017] 3. The melting coil adopts a V-shaped coil with a larger top and a smaller bottom. The upper end of the coil can preheat the bar that has just entered the coil, and the smaller part at the lower end can directly melt the bar. The molten liquid will automatically drip under its gravity. This shape can also prevent the plate from melting in the middle and causing the whole piece or large pieces to drip.

[0018] The utility model has an ingenious design and a simple structure, effectively ensures the continuous production of nano powders using raw material rods, reduces impurity pollution, and improves the production quality of nano powders.

[0019] The detailed structure of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the interior of the rod feeding device;

[0021] Figure 2 Schematic diagram of the rod feeding device structure;

[0022] Figure 3 This is a schematic diagram of the structure of the utility model;

[0023] 1 Rod feeder, 2 Rod pusher, 3 Feed bin, 4 Vacuum ball valve, 5 Feed motor, 6 Rotating rod, 7 Transition bin, 8 Vacuum isolating valve, 9 Rod feeder deviation corrector, 10 Guide sleeve, 11 Movable shaft, 12 Deviation correction wheel, 13 Guide wheel, 14 Fixed plate, 15 Rotating frame, 16 Pressure sensor, 17 Feed port, 18 Inflating port, 19 Inspection bin door, 20 Observation window, 21 Vacuum tube, 22 Melting chamber, 23 Electrode, 24 Plasma gun, 25 Plasma gun seat, 26 Atomization chamber, 27 Liquid steel transition chamber, 28 Rod, 29 Coil, 30 Clamping device, 31 Rod feeder. DETAILED DESCRIPTION

[0024] As shown in the accompanying drawings: A device for preparing powder from rods, including a rod feeding device 31, a melting chamber 22 and an atomizing chamber 26. The rod feeding device 31 is arranged at the top of the melting chamber 22 and transports rods 28 into the melting chamber 22. The lower end of the melting chamber 22 is provided with an atomizing chamber 26. The rod feeding device 31 includes a rod feeder 1, a feeding bin 3 and a transition bin 7. A rod feeder 1 is provided on one side of the top of the transition bin 7, and a feeding bin 3 is provided on the other side. A rod pusher 2 and a feeding port 17 are provided on the feeding bin 3. A rod feeding corrector 9 is provided at the lower end of the transition bin 7 and is located directly below the rod feeder 1. A rod 28 translator is provided in the transition bin 7, and a rod 28 loading indexing disk is provided in the feeding bin 3. The rod feeder 1 transports the rod 28 to the clamping device in the melting chamber 22.

[0025] This solution continuously feeds rods through the rod feeding device 31, and performs vacuum transition through the transition bin 7 during the rod feeding process, thereby reducing the impact of control on the rods. In addition, the feed bin 3 is used to store rods, and multiple rods can be added at a time to reduce the number of times the feed bin 3 is fed. The lower end of the rod 28 is provided with an external thread, or the lower end of the rod 28 is provided with an external thread, and the upper end of the rod 28 is provided with a blind hole, and a matching thread is provided in the blind hole, so that the rods 28 can be connected together during the transportation into the melting chamber 22, and the problem of being squeezed out and directly falling by the upper end rod will not occur, thereby ensuring the continuous production of nano powder and the quality of the powder; in the utility model, the diameter of the rod 28 is 5-50mm, and the length is 100-1800mm; in this embodiment, the diameter of the rod is 10mm and the length is 500mm.

[0026] In the embodiment, the lower end of the bar 28 is provided with an external thread, and the rod feeder 1 is provided with a tapping tool for tapping the upper end of the bar 28 with an internal thread, so that the bar 28 is connected end to end through the thread during the process of entering the smelting chamber. Preferably, when the upper end of the bar 28 is not provided with an internal thread, the bar 28 can be tapped with an internal thread by a tapping tool. After the tapping is completed, the tapping tool does not withdraw, thereby achieving connection with the bar. At this time, the bar is pushed down together by the rod feeder 1, and the rod is rotated while pushing down so that the rod is threadedly connected to the bar at the lower end. At this time, the tapping tool is withdrawn and the rod feeder 1 is retracted; when the upper end of the bar 28 is provided with an internal thread, the tapping tool can correct the internal thread and at the same time connect the bar to the pusher, facilitating the pushing of the bar downward. During the pushing process, the bar is also rotated so that the rod is threadedly connected to the bar at the lower end. At this time, the tapping tool is withdrawn and the rod feeder 1 is retracted.

[0027] In the embodiment, a vacuum ball valve 4 is provided between the feed bin 3 and the transition bin 7, and a pressure sensor 16 and a vacuum pipe 21 are also provided on the feed bin 3. Preferably, after the rods are added to the feed bin 3, the feed port 17 and the vacuum ball valve 4 are closed, and the feed bin 3 is vacuumed through the vacuum pipe 21. When the pressure on the pressure sensor 16 reaches the set value, inert gas is filled into the feed bin 3 through the filling port 18 to ensure that its pressure is consistent with the pressure in the transition bin 7 below. At this time, the vacuum ball valve 4 is opened, and the rods 28 are conveyed downward through the rod pusher 2. A dividing plate is provided in the feed bin 3, and the dividing plate is driven by the feed motor 5 located at the lower end of the feed bin 3. The feed motor 5 drives the dividing plate to rotate intermittently each time, and the next rod 28 reaches directly below the rod pusher 2.

[0028] In the embodiment, a vacuum isolation valve 8 is provided between the rod feeder corrector 9 and the transition bin 7. Preferably, the transition bin 7 is rectangular, and an inspection bin door 19 is hingedly provided at one end of the transition bin 7. The inspection bin door 19 is opened and closed by bolts. The provision of the vacuum isolation valve 8 facilitates non-stop inspection and maintenance of the transition bin 7. A translator is provided in the transition bin 7, and the translator includes a drive motor, a rotating frame 15 and a rotating rod 6. The drive motor is installed at the lower end of the transition bin 7 and is connected to the rotating rod 6 in the transition bin 7 through a drive shaft. The rotating frame 15 is fixed on the rotating frame 15, and two brackets are provided on the rotating frame 15. The rotating rod 6 is located at the center of the rod feeder 1 and the rod pusher 2. During the rotation process, the brackets can be located directly below the rod feeder 1 and the rod pusher 2, respectively.

[0029] In the embodiment, the rod feeding corrector 9 includes a guide wheel 13 and a correcting wheel 12. The guide wheel 13 is set on a fixed plate 14 in the rod feeding corrector 9 through a fixed shaft. The fixed plates 14 are fixedly connected by bolts and welded in the rod feeding corrector 9; the guide wheel 13 is located above the correcting wheel 12, and the correcting wheel 12 includes a driving wheel and a driven wheel. The driving wheel is connected to the driving device on the outside of the rod feeding corrector 9 through a movable shaft 11 and is driven by a chain. The driven wheel is set on the other side of the driving wheel through a buffer spring, and the rod is transported downward from the middle of the guide wheel 13 and the correcting wheel 12; a guide sleeve is provided below the correcting wheel 12; and an observation window is provided on one side of the rod feeding corrector 9.

[0030] In this embodiment, a clamping device and a smelting coil 29 are provided within the melting chamber 22. The clamping device is located directly below the rod feeder and corrector 9. The smelting coil 29 is a V-shaped spiral with a larger top and a smaller bottom. The smelting coil 29 is connected to an external electrode 23 outside the melting chamber 22 via an insulating plate. Preferably, a conical molten steel transition chamber 27 is provided between the melting chamber 22 and the atomization chamber 26 to ensure that the molten steel automatically drips downward. A molten steel inlet is provided at the lower end of the molten steel transition chamber 27. More preferably, at least two plasma guns 24 are provided on the atomization chamber 26 via a plasma gun mount 25. In this embodiment, two plasma guns 24 are provided, and the flame convergence point of the plasma guns 24 is located directly below the molten steel inlet. The atomization chamber 26 has a sandwich wall through which cooling water flows. After the molten steel is atomized by the plasma guns 24, it is cooled in the atomization chamber 26 to form a nanopowder, which can then be collected.

[0031] The utility model can realize continuous feeding of raw material bars through the rod feeding device 31 without stopping the machine for single addition. In the process of continuous rod feeding, vacuum feeding is realized through the feeding bin 3, which reduces the impurities carried by the bars. The rod feeding corrector 9 on the rod feeding device 31 can guide and correct the bars, effectively avoiding the problem of difficulty in feeding the bars due to bending. The smelting coil 29 adopts a V-shaped coil 29 with a large top and a small bottom. The upper end of the coil 29 can preheat the bars that have just entered the coil 29, and the smaller part of the lower end can directly melt the bars. The molten liquid will automatically drip under its gravity, and this shape can The invention prevents the problem of whole or large pieces of dripping caused by the melting of the plate in the middle; the utility model has an ingenious design and a simple structure, effectively ensures the continuous production of nano powders using raw material rods, reduces impurity pollution, and improves the production quality of nano powders; the utility model can prepare micron powder, submicron powder or nano powder according to different settings of process parameters during the production process, such as plasma temperature, rod feeding speed, rod diameter, and the setting of the installation angles of three plasma guns; the rod materials in the utility model include alloy rods, single-element rods, etc., such as titanium rods, iron rods, iron silicon, iron nickel and other rods, and have a wide range of applications.

[0032] The above is a preferred embodiment of the present invention and the technical principles used therein. For those skilled in the art, any obvious changes such as equivalent transformations, simple replacements, etc. based on the technical solution of the present invention, without departing from the spirit and scope of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. An apparatus for preparing powder from rod material, comprising a rod feeding device, a melting chamber, and an atomizing chamber, wherein the rod feeding device is disposed at the top of the melting chamber and feeds the rod material into the melting chamber, and an atomizing chamber is disposed at the lower end of the melting chamber, characterized in that: The rod feeding device includes a rod feeder, a feeding bin and a transition bin. A rod feeder is provided on one side of the top of the transition bin, and a feeding bin is provided on the other side. A rod pusher and a feeding port are provided on the feeding bin. A rod feeder corrector is provided at the lower end of the transition bin and is located directly below the rod feeder. A rod translator is provided in the transition bin, and a rod loading indexing plate is provided in the feeding bin. The rod feeder transports the rods to the clamping device in the melting chamber.

2. The device for preparing powder from rod material according to claim 1, characterized in that: The lower end of the bar is provided with an external thread, and the bar feeder is provided with a tapping tool for tapping the upper end of the bar with an internal thread, so that the bar is connected end to end through the thread during entering the smelting chamber.

3. The device for preparing powder from rod material according to claim 1, characterized in that: A vacuum ball valve is provided between the feed bin and the transition bin, and a pressure sensor and a vacuum pipe are also provided on the feed bin.

4. The device for preparing powder from rod material according to claim 1, characterized in that: A vacuum isolation valve is provided between the rod feeding corrector and the transition chamber.

5. The device for preparing powder from rod material according to claim 1, characterized in that: The indexing plate is driven by a feeding motor located at the lower end of the feeding bin.

6. The device for preparing powder from rod material according to claim 1, characterized in that: The translator includes a drive motor, a rotating frame and a rotating rod. The drive motor is installed at the lower end of the transition bin and is connected to the rotating rod in the transition bin through a drive shaft. The rotating frame is installed and fixed on the rotating frame. At least one bracket is provided on the rotating frame. The rotating rod is located at the center of the rod feeder and the rod pusher. During the rotation process, the bracket can be located directly below the rod feeder and the rod pusher respectively.

7. The device for preparing powder from rod material according to claim 1, characterized in that: The melting chamber is provided with a clamping device and a melting coil. The clamping device is located directly below the rod feeder and the melting coil is in a V-shaped spiral shape. The melting coil is connected to an external electrode outside the melting chamber through an insulating plate.

8. The device for preparing powder from rod material according to claim 1, characterized in that: A conical molten steel transition chamber is provided between the melting chamber and the atomizing chamber, and a molten steel inlet is provided at the lower end of the molten steel transition chamber.

9. The device for preparing powder from rod material according to any one of claims 1 to 8, characterized in that: At least two plasma guns are arranged on the atomizing chamber via a plasma gun seat, and the flame convergence point of the plasma guns is located just below the molten steel inlet; the atomizing chamber has an interlayer wall, and cooling water flows in the interlayer wall.

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