Method of using a high-temperature evaporator

Abstract

The present invention discloses a method of using a high-temperature evaporator. The high-temperature evaporator includes a housing, a crucible, and a transfer arc gun. The crucible includes a pot body, a docking pot ring, and a pot cover. An intake chamber and an exhaust chamber are provided on the outer side of the docking pot ring. The intake chamber is connected to a carrier gas input pipe, and the exhaust chamber is connected to an exhaust pipe. The housing includes an upper housing and a lower housing. A feeding pipe and an exhaust pipe are connected to the pot cover. In the present invention, the crucible adopts a three-section structure, which facilitates the cleaning of the carrier gas passage and the maintenance of the entire crucible. The blowing direction of the carrier gas can be changed in real time. By adjusting the pressure and direction of the carrier gas, the material adhering to the crucible wall can be blown, so that the materials in the crucible can all contact the positive electrode conductive rod to be positively charged, thereby reducing the residue of the materials in the crucible after production is completed and improving the evaporation efficiency. At the same time, the crucible has good sealing performance, especially the pot body has good heat preservation performance, reducing energy loss and improving energy utilization rate.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-temperature evaporators, and particularly relates to a method for using a high-temperature evaporator. Background Art

[0002] The high-temperature evaporator uses high temperature to vaporize metal materials, and the vaporized materials form metal powder products with uniform sizes after cooling. The high-temperature evaporator generally includes a furnace body, a crucible, a transfer arc gun, etc. The crucible includes a pot body and a pot lid. In the existing high-temperature evaporators, the internal temperature field of the crucible is prone to change after long-term use, resulting in frequent adjustment of the angle, power, etc. of the transfer arc gun to heat and vaporize the remaining metal materials as much as possible. At the same time, the existing high-temperature evaporators are generally only used to produce one kind of metal powder. Once the product is changed, the entire crucible needs to be replaced, resulting in frequent disassembly and installation of the crucible, which is easy to damage the crucible. Summary of the Invention

[0003] To solve the above technical problems, the technical solution adopted by the present invention is: a method for using a high-temperature evaporator, the high-temperature evaporator includes a housing, a crucible, and a transfer arc gun. The crucible includes a pot body, a butt joint pot ring, and a pot lid. The lower end of the butt joint pot ring is placed on the pot body, and the pot lid covers the upper end of the butt joint pot ring. The lower end of the pot body is connected with a conductive tube, and a positive electrode conductive rod is arranged inside the conductive tube. The upper end of the positive electrode conductive rod extends into the pot body, and the lower end of the positive electrode conductive rod is connected with a conductive base. The transfer arc gun is located above the pot lid, and the lower end of the transfer arc gun extends into the inside of the pot lid. An air inlet cavity and an air outlet cavity are arranged on the outer side of the butt joint pot ring. The air inlet cavity communicates with the inside of the crucible through a plurality of air inlet holes, and the air outlet cavity communicates with the inside of the crucible through a plurality of air outlet holes. The air inlet cavity is connected with a carrier gas input pipe, and the air outlet cavity is connected with an exhaust pipe. The housing includes an upper housing and a lower housing. The pot lid is located in the upper housing, and the pot body is located in the lower housing. A feeding pipe and an air outlet pipe are connected to the pot lid. An upper rotating ring and a lower rotating ring are sleeved on the outer side of the butt joint pot ring. The upper rotating ring and the lower rotating ring are respectively rotatably installed on the butt joint pot ring. The air inlet cavity is located inside the upper rotating ring. A plurality of air inlet butting ports communicating with the inside of the air inlet cavity are arranged on the upper rotating ring, and the air inlet butting ports correspond to the air inlet holes one by one. A plurality of air outlet butting ports communicating with the inside of the air outlet cavity are arranged on the lower rotating ring, and the air outlet butting ports correspond to the air outlet holes one by one. Swing rods are respectively fixedly connected to the upper rotating ring and the lower rotating ring. An activity adjustment port for the swing rods to extend out is arranged on the lower housing. The air inlet holes are arc-shaped long holes.

[0004] The usage method includes the following steps: adding materials into the pot body through a feeding pipe; rotating the upper rotating ring through the swing rod on the upper rotating ring so that the air inlet docking port is docked with the corresponding air inlet hole, the air inlet cavity is communicated with the inside of the crucible, and introducing carrier gas into the air inlet cavity through the carrier gas input pipe; using the carrier gas to squeeze the air in the crucible and discharging the air in the crucible through the exhaust pipe; rotating the upper rotating ring and the lower rotating ring so that the air outlet docking port is staggered from the air outlet hole, changing the position of the air inlet docking port and the corresponding air inlet hole, and adjusting the flow rate of the carrier gas entering the inside of the crucible; connecting the positive electrode conductive rod and the transfer arc gun to a power source respectively, heating the materials in the pot body with the transfer arc generated by the transfer arc gun, and the gasified materials follow the carrier gas and are discharged from the outlet pipe, and form powder products after cooling. At this time, the flow rate of the carrier gas entering the inside of the crucible is the flow rate during normal production; after adding new materials or when a certain amount of materials in the crucible is consumed, rotate the upper rotating ring reciprocally to increase the flow rate and the entering angle of the carrier gas entering the inside of the crucible, and use the high-pressure carrier gas to clean the materials inside the crucible. After the cleaning is completed, the upper rotating ring returns to its original position, and the flow rate of the carrier gas entering the inside of the crucible returns to the flow rate during normal production.

[0005] As a preference of the above technical solution, the air inlet holes are gradually inclined from outside to inside and face the inside of the pot body.

[0006] As a preference of the above technical solution, heat conduction tubes are wound around the periphery of the pot body, heat conduction oil or water is filled in the heat conduction tubes, both ends of the heat conduction tubes are connected to a cooling box, and the heat conduction oil or water forms a cycle through a pump.

[0007] As a preference of the above technical solution, the docking pot ring includes an upper pot ring and a lower pot ring. There are several adjusting pot rings or no adjusting pot rings between the upper pot ring and the lower pot ring. The upper rotating ring is rotatably installed on the upper pot ring, the air inlet holes are located on the upper rotating ring, the lower rotating ring is rotatably installed on the lower pot ring, and the air outlet holes are located on the lower rotating ring.

[0008] As a preference of the above technical solution, several positioning holes are provided on the lower surface of the upper pot ring, several positioning columns are fixedly provided on the upper surface of the lower pot ring, several positioning columns are provided on the upper surface of the adjusting pot ring, and several positioning holes are provided on the lower surface of the adjusting pot ring.

[0009] As a preference of the above technical solution, heat insulation materials are filled in the upper shell body and the lower shell body respectively.

[0010] The beneficial effects of the present invention are as follows: In the method for using the high-temperature evaporator of the present invention, the crucible adopts a three-section structure, which facilitates the cleaning of the carrier gas channel and the maintenance of the entire crucible. The blowing direction of the carrier gas can be changed in real time. By adjusting the air pressure and direction of the carrier gas, the material adhering to the crucible wall can be blown, so that the materials in the crucible can all contact the positively charged positive conductive rod, thereby reducing the residual materials in the crucible after production and improving the evaporation efficiency. At the same time, the crucible has good sealing performance, especially good heat preservation performance of the pot body, reducing energy loss and improving energy utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic cross-sectional structure diagram of the present invention;

[0012] Figure 2 is a schematic structure diagram of the crucible;

[0013] Figure 3 is a schematic structure diagram of the docking pot ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0015] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0016] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0017] Such as Figures 1-3As shown, a high-temperature evaporator with a novel crucible includes a shell, a crucible, and a transfer arc gun 1. The crucible includes a pot body 2, a docking pot ring and a pot cover 3. The lower end of the docking pot ring is placed on the pot body 2, and the pot cover 3 covers the upper end of the docking pot ring. The lower end of the pot body 2 is connected to a conductive tube 4, and a positive conductive rod 5 is provided in the conductive tube 4. The upper end of the positive conductive rod 5 extends into the pot body 2, and the lower end of the positive conductive rod 5 is connected to a conductive base 6. The transfer arc gun 1 is located above the pot cover 3. The lower end extends into the interior of the pot cover 3. The outside of the docking pot ring is provided with an air inlet chamber 7 and an air outlet chamber 8. The air inlet chamber 7 is connected to the interior of the crucible through a plurality of air inlet holes 9, and the air outlet chamber 8 is connected to the interior of the crucible through a plurality of air outlet holes 10. The air inlet chamber 7 is connected to a carrier gas inlet pipe, and the air outlet chamber 8 is connected to an exhaust pipe. The shell includes an upper shell 11 and a lower shell 12. The pot cover 3 is located in the upper shell 11, and the pot body 2 and the docking pot ring are both located in the lower shell 12. The pot cover 3 is connected to a feeding pipe 13 and an air outlet pipe 14. The carrier gas inlet pipe inputs nitrogen and other carrier gases. Before heating, the carrier gas is filled into the crucible, and the air in the crucible is discharged through the exhaust pipe. During the heating process, the carrier gas entrains the metal gas and flows from the air outlet pipe 14 into the collector for cooling. Materials can be added to the crucible through the feeding pipe 13. The transfer arc gun 1 is connected to the negative pole of the power supply and is negatively charged. The metal material wraps the positive conductive rod 5 around the positive conductive rod 5, and the positive conductive rod 5 is positively charged, making the metal material positively charged. The transfer arc gun 1 emits an arc to heat the metal material, causing the metal material to vaporize into a gaseous state. The outer side of the docking pot ring is covered with an upper rotating ring 15 and a lower rotating ring 16. The upper rotating ring 15 and the lower rotating ring 16 are respectively rotatably mounted on the docking pot ring. The air inlet cavity 7 is located inside the upper rotating ring 15. The upper rotating ring 15 is provided with a plurality of air inlet docking ports connected to the interior of the air inlet cavity 7. The air inlet docking ports correspond to the air inlet holes 9 one by one. The lower rotating ring 16 is provided with a plurality of air outlet docking ports connected to the interior of the air outlet cavity 8. The air outlet docking ports correspond to the air outlet holes 10 one by one. The upper rotating ring 15 and the lower rotating ring 16 are respectively fixedly connected with a rocker 17, and the lower shell 12 is provided with a movable adjustment port 18 for the rocker 17 to extend. By rotating the rocker 17 on the upper rotating ring 15, the upper rotating ring 15 rotates axially through a certain angle, allowing the air inlet interface and the corresponding air inlet hole 9 to be connected, staggered, and have different flux adjustment states, such as connection, staggered, and adjusted. The air inlet hole 9 is an arc-shaped elongated hole. Thus, while the air inlet hole 9 and the air inlet interface remain connected, rotating the upper rotating ring 15 can adjust the relative position of the air inlet interface, thereby adjusting the angle at which the carrier gas enters the crucible. This, in turn, increases the pressure of the carrier gas, thereby blowing off material stuck to the inner wall of the pot body 2.

[0018] The method of use comprises the following steps: adding material into the pot body through the feeding tube 13; rotating the upper rotating ring 17 through the swing rod 17 on the upper rotating ring 15, so that the air inlet interface is connected with the corresponding air inlet hole 9, the air inlet cavity 7 is connected with the interior of the crucible, and the carrier gas is filled into the air inlet cavity 7 through the carrier gas input pipe; using the carrier gas to squeeze the air in the crucible, and the air in the crucible is discharged through the exhaust pipe; rotating the upper rotating ring 15 and the lower rotating ring 16 so that the air outlet interface is staggered with the air outlet hole 10, changing the position of the air inlet interface and the corresponding air inlet hole 9, and adjusting the flow rate of the carrier gas entering the crucible; the positive electrode conductive rod 5 The upper rotating ring 15 is connected to a power source respectively, and the transferred arc generated by the transferred arc gun 1 is used to heat the material in the pot body 2. The vaporized material is discharged from the gas outlet pipe 14 along with the carrier gas, and forms a powder product after cooling. At this time, the flow rate of the carrier gas entering the crucible is the flow rate during normal production; after adding new material or a certain amount of material in the crucible is consumed, the upper rotating ring 15 is rotated back and forth to increase the flow rate and entry angle of the carrier gas entering the crucible, and the material inside the crucible is cleaned with high-pressure carrier gas. After cleaning, the upper rotating ring 15 is reset, and the flow rate of the carrier gas entering the crucible is restored to the flow rate during normal production.

[0019] Furthermore, the air inlet 9 is gradually tilted from the outside to the inside and faces the inside of the pot body 2. The air inlet 9 is tilted downward with a certain angle so that the carrier gas can be blown into the inside of the pot body 2.

[0020] Furthermore, a heat pipe 19 is wound around the pot body 2. The heat pipe 19 is filled with water. Both ends of the heat pipe 19 are connected to a cooling box, and the water is circulated by a pump. By controlling the flow rate of the water in the heat pipe 19, the temperature inside the pot body 2 is controlled, thereby maintaining a stable temperature inside the crucible.

[0021] Furthermore, the docking pot ring includes an upper pot ring 20 and a lower pot ring 21. A plurality of adjustment pot rings 25 are provided between the upper pot ring 20 and the lower pot ring 21, or no adjustment pot ring 25 is provided. The upper rotating ring 15 is rotatably mounted on the upper pot ring 20, and the air inlet 9 is located on the upper rotating ring 15. The lower rotating ring 16 is rotatably mounted on the lower pot ring 21, and the air outlet 10 is located on the lower rotating ring 16. The number of adjustment pot rings 25 can be increased or decreased as needed, or the number of adjustment pot rings 25 can be completely omitted. Increasing the number of adjustment pot rings 25 can increase the internal capacity of the crucible and adjust the height of the transferred arc gun 1.

[0022] Furthermore, the lower surface of the upper pot ring 20 is provided with a plurality of positioning holes 26 , the upper surface of the lower pot ring 21 is fixed with a plurality of positioning posts 27 , the upper surface of the adjustment pot ring 25 is provided with a plurality of positioning posts, and the lower surface of the adjustment pot ring 25 is provided with a plurality of positioning holes 26 .

[0023] Further, heat insulation materials are respectively filled in the upper housing 11 and the lower housing 12. The heat insulation materials adopt common felt materials or ceramic materials.

[0024] It is worth mentioning that the technical features such as the transferred arc gun and the pump involved in this invention patent application should be regarded as the prior art. The specific structures, working principles, and possible control methods and spatial arrangement methods of these technical features can be selected conventionally in this field and should not be regarded as the inventive points of this invention patent. This invention patent will not be further specifically elaborated.

[0025] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. Method for using a high-temperature evaporator, the high-temperature evaporator comprising a housing, a crucible, and a transfer arc gun, characterized in that, The crucible includes a pot body, a docking pot ring and a pot lid. The lower end of the docking pot ring is placed on the pot body, and the pot lid covers the upper end of the docking pot ring. The lower end of the pot body is connected with a conductive pipe, and a positive conductive rod is arranged inside the conductive pipe. The upper end of the positive conductive rod extends into the pot body, and the lower end of the positive conductive rod is connected with a conductive base. The transfer arc gun is located above the pot lid, and the lower end of the transfer arc gun extends into the inside of the pot lid. An air inlet cavity and an air outlet cavity are arranged outside the docking pot ring. The air inlet cavity communicates with the inside of the crucible through a plurality of air inlet holes, and the air outlet cavity communicates with the inside of the crucible through a plurality of air outlet holes. The air inlet cavity is connected with a carrier gas input pipe, and the air outlet cavity is connected with an exhaust pipe. The housing includes an upper housing and a lower housing. The pot lid is located in the upper housing, and the pot body is located in the lower housing. A feeding pipe and an air outlet pipe are connected to the pot lid. An upper rotating ring and a lower rotating ring are sleeved outside the docking pot ring. The upper rotating ring and the lower rotating ring are respectively rotatably installed on the docking pot ring. The air inlet cavity is located inside the upper rotating ring. A plurality of air inlet docking ports communicating with the inside of the air inlet cavity are arranged on the upper rotating ring, and the air inlet docking ports correspond to the air inlet holes one by one. A plurality of air outlet docking ports communicating with the inside of the air outlet cavity are arranged on the lower rotating ring, and the air outlet docking ports correspond to the air outlet holes one by one. Swing rods are respectively fixedly connected to the upper rotating ring and the lower rotating ring. An activity adjustment opening for the swing rods to extend out is arranged on the lower housing. The air inlet holes are arc-shaped long holes. The usage method includes the following steps: adding materials into the pot body through the feeding pipe; rotating the upper rotating ring through the swing rod on the upper rotating ring so that the air inlet docking port is docked with the corresponding air inlet hole, the air inlet cavity is communicated with the inside of the crucible, and introducing carrier gas into the air inlet cavity through the carrier gas input pipe; using the carrier gas to squeeze the air in the crucible and discharging the air in the crucible through the exhaust pipe; rotating the upper rotating ring and the lower rotating ring so that the air outlet docking port is staggered from the air outlet hole, changing the position of the air inlet docking port and the corresponding air inlet hole, and adjusting the flow rate of the carrier gas entering the inside of the crucible; connecting the positive conductive rod and the transfer arc gun to the power supply respectively, heating the materials in the pot body with the transfer arc generated by the transfer arc gun, and the gasified materials follow the carrier gas and are discharged from the outlet pipe, and form powder products after cooling. At this time, the flow rate of the carrier gas entering the inside of the crucible is the flow rate during normal production; after adding new materials or when a certain amount of materials in the crucible are consumed, rotate the upper rotating ring back and forth to increase the flow rate and the entering angle of the carrier gas entering the inside of the crucible, and use the high-pressure carrier gas to clean the materials inside the crucible. After the cleaning is completed, the upper rotating ring returns to its original position, and the flow rate of the carrier gas entering the inside of the crucible returns to the flow rate during normal production. The air inlet hole is gradually inclined from the outside to the inside and faces the inside of the pot body. The docking pot ring includes an upper pot ring and a lower pot ring. There are several adjusting pot rings or no adjusting pot rings between the upper pot ring and the lower pot ring. The upper rotating ring is rotatably installed on the upper pot ring, the air inlet hole is located on the upper rotating ring, the lower rotating ring is rotatably installed on the lower pot ring, and the air outlet hole is located on the lower rotating ring. The periphery of the pot body is wound with heat conduction pipes filled with heat conduction oil or water. Both ends of the heat conduction pipes are connected to the cooling box, and the heat conduction oil or water forms a cycle through the pump. The lower surface of the upper pot ring is provided with several positioning holes, the upper surface of the lower pot ring is fixedly provided with several positioning columns, the upper surface of the adjusting pot ring is provided with several positioning columns, and the lower surface of the adjusting pot ring is provided with several positioning holes.

2. The method for using a high-temperature evaporator according to claim 1, characterized in that, The upper shell body and the lower shell body are respectively filled with heat preservation materials.

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