Vacuum gas atomization metal and alloy powder production device with screening function

Abstract

The invention relates to the technical field of vacuum gas atomization production devices, and discloses a vacuum gas atomization metal and alloy powder production device with a screening function. The vacuum gas atomization metal and alloy powder production device comprises a machine body, a preparation box is fixedly connected to the top of the machine body, a crucible is fixedly connected to the interior of the preparation box, and a discharging pipe is fixedly connected to the bottom of the crucible; an electric one-way valve is fixedly connected to the outer wall of the discharging pipe, a heating assembly is arranged on the outer wall of the machine body, a screening assembly is arranged at the top in the machine body, an impurity removing assembly is arranged at the bottom in the machine body, and driving assemblies are arranged on the outer walls of the left side and the right side of the machine body; the vacuum pump is fixedly connected to the rear side of the outer wall of the machine body. Through the combination of the vacuum pump, the heating shell and the electric heating wire, gas entering the machine body can be rapidly heated, the strict requirement for the temperature in the atomization process is met, gas is pretreated through the filter, and moisture and impurities are removed.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum air atomization production equipment, in particular to a vacuum air atomization production equipment for metal and alloy powders with a screening function. Background Art

[0002] The device for making alloy powder by vacuum gas atomization is a device based on vacuum gas atomization technology. When working, it first melts the alloy raw materials in a vacuum environment, and then forms a stable liquid flow of the liquid alloy through a special device. Then, the liquid alloy flow is impacted by a high-speed and high-pressure inert gas (usually argon, etc.) to break the liquid alloy into tiny droplets. These tiny droplets quickly dissipate heat and solidify in a vacuum environment, and finally form alloy powder. This method can effectively control the particle size, shape and composition uniformity of the powder.

[0003] During use, the existing vacuum air atomization device for making alloy powder lacks effective gas pretreatment measures. The moisture and impurities in the gas can easily cause scaling and corrosion problems during the heating process, causing frequent failures in the heating system, requiring a lot of time and cost for maintenance and repair. At the same time, moisture can easily cause the alloy powder to condense. Therefore, a vacuum air atomization metal and alloy powder production device with screening function is proposed. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a vacuum gas atomization metal and alloy powder production device with a screening function, which solves the problem of the existing vacuum gas atomization device for making alloy powders during use due to the lack of effective gas pretreatment measures.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a vacuum gas atomized metal and alloy powder production device with screening function, comprising a machine body, a preparation box is fixedly connected to the top of the machine body, a crucible is fixedly connected to the inside of the preparation box, a discharge pipe is fixedly connected to the bottom of the crucible, an electric one-way valve is fixedly connected to the outer wall of the discharge pipe, a heating component is arranged on the outer wall of the machine body, a screening component is arranged on the top of the machine body, a decontamination component is arranged on the bottom of the machine body, and driving components are arranged on the outer walls of the left and right sides of the machine body; The heating assembly comprises a vacuum pump, the vacuum pump is fixedly connected to the rear side of the outer wall of the housing, the input end of the vacuum pump is fixedly connected to an air intake pipe, the outer wall of the air intake pipe is fixedly connected to a heating shell, a heating wire is arranged inside the heating shell, and the output end of the heating wire is fixedly connected to an exhaust pipe; The screening assembly comprises a plurality of mounting plates, the mounting plates are fixedly connected to the inner wall of the machine body, a sliding rod is fixedly connected between two adjacent mounting plates, a filter screen is slidably connected to the outer wall of the sliding rod, and a spring is sleeved on the outer wall of the sliding rod; The impurity removal component includes a magnetic roller and a scraper, the magnetic roller is rotatably connected to the inside of the machine body, the scraper is fixedly connected to the inner wall of the machine body, and the magnetic roller and the scraper are in contact with each other; The driving assembly includes two shells, which are respectively fixedly connected to the left and right outer walls of the body, an impeller is rotatably connected inside the shell, a rotating shaft is fixedly connected to the middle of the impeller, and two eccentric wheels are fixedly connected to the outer wall of the rotating shaft.

[0006] Preferably, a conveying channel is opened in the top wall of the body, two nozzles are fixedly connected to the inner wall of the conveying channel, and one end of the exhaust pipe away from the vacuum pump is fixedly connected to the inside of the nozzle.

[0007] Preferably, a filter is fixedly connected to the inner bottom wall of the body, and one end of the air inlet pipe away from the vacuum pump is fixedly connected to the inside of the filter.

[0008] Preferably, the outer wall of the body is fixedly connected with heat dissipation fins, and the outer wall of the exhaust pipe is wound inside the heat dissipation fins.

[0009] Preferably, the side of the rotating shaft extending out of the shell is fixedly connected to a driving pulley, the side of the magnetic roller extending out of the outer wall of the body is fixedly connected to a driven pulley, and a belt is sleeved between the driving pulley and the driven pulley.

[0010] Preferably, three collecting boxes are fixedly connected to the outer wall of the body, and the three collecting boxes are respectively used to collect particles and agglomerates that do not meet the particle size requirements, particles and agglomerates that meet the particle size requirements, and various impurities.

[0011] Preferably, a guide plate is fixedly connected to the inner wall of the body, and an inclined plate is fixedly connected to the inner bottom of the body.

[0012] The present invention provides a vacuum gas atomized metal and alloy powder production device with screening function. It has the following beneficial effects: 1. The present invention combines a vacuum pump with a heating shell and a heating wire, which can not only quickly heat the gas entering the body to meet the strict temperature requirements of the atomization process, but also pre-treat the gas through a filter to remove moisture and impurities, thereby avoiding scaling and corrosion problems caused by impurities during the heating process, ensuring the long-term stable operation of the heating system, reducing equipment maintenance costs and downtime, and improving production efficiency.

[0013] 2. In the present invention, the eccentric wheel is driven by the driving assembly to make continuous circular motion, and the periodic centrifugal force generated is cleverly converted into the reciprocating linear motion of the filter screen on the slide rod, so that the filter screen vibrates, and the alloy powder particles of various shapes and sizes after atomization are accurately screened.

[0014] 3. In the present invention, through the cooperation between the magnetic roller and the scraper in the impurity component, the sieved alloy powder will be adsorbed by the magnetic roller, and the dust and impurities will fall directly, and the alloy powder on the magnetic roller will be scraped off by the scraper, thereby realizing the separation of the alloy powder and impurities, thereby ensuring the purity of the alloy powder.

[0015] 4. The present invention integrates the functions of gas pretreatment, vacuum melting, inert gas atomization, screening and the like, and has complete functions.

[0016] 5. The device of the present invention has a compact structure, and the device and production system are relatively easy to implement in a vacuum environment.

[0017] 6. The present invention is helpful to ensure the safety of production system.

[0018] 7. The present invention has integrated production, short process, convenient quality control, and beneficial to ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention; Figure 2 It is a cross-sectional view of the body of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 1 Enlarged view of point A in the middle; Figure 5 It is a schematic diagram of the heating wire of the present invention; Figure 6 for Figure 2 Enlarged view of point C in the middle; Figure 7 for Figure 2 Enlarged view of point D in the middle; Figure 8 It is a schematic diagram of the rotating shaft of the present invention.

[0020] Among them, 1. body; 2. preparation box; 3. crucible; 4. discharge pipe; 5. electric one-way valve; 6. conveying channel; 7. vacuum pump; 8. intake pipe; 9. heating shell; 10. heating wire; 11. exhaust pipe; 12. nozzle; 13. shell; 14. impeller; 15. rotating shaft; 16. eccentric wheel; 17. mounting plate; 18. slide rod; 19. filter; 20. spring; 21. guide plate; 22. magnetic roller; 23. scraper; 24. inclined plate; 25. collecting box; 26. driving pulley; 27. driven pulley; 28. belt; 29. ​​filter; 30. cooling fins. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions 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 creative work are within the scope of protection of the present invention.

[0022] Please see attached Figure 1-3 The embodiment of the present invention provides a production device for vacuum gas atomization of metal and alloy powders with a screening function, including a body 1. The body 1 serves as the main structure of the entire device and provides an installation foundation and a working space for each internal component. A preparation box 2 is fixedly connected to the top of the body 1. A crucible 3 is fixedly connected to the inside of the preparation box 2. The crucible 3 is used to hold the alloy raw material to be atomized, and is also the main place for processing the raw material. A discharge pipe 4 is fixedly connected to the bottom of the crucible 3. The discharge pipe 4 is used to discharge the liquefied metal raw material. An electric one-way valve 5 is fixedly connected to the outer wall of the discharge pipe 4. The electric one-way valve 5 is used to control the outflow of the liquid metal raw material and prevent gas and impurities from passing through the discharge pipe. 4 enters the crucible 3, the outer wall of the body 1 is provided with a heating component, the heating component is used to heat the gas in the body 1 to meet the temperature requirements during the atomization process, and also helps to maintain the working temperature environment inside the body 1, ensuring the normal operation of each component and the good forming of the alloy powder. The top of the body 1 is provided with a screening component, which can screen the particle size of the atomized alloy powder and separate the particles that do not meet the particle size requirements. The bottom of the body 1 is provided with an impurity removal component, which can effectively remove dust and impurities in the alloy powder. The outer walls on both sides of the body 1 are provided with driving components, which provide a power source for the screening component and the impurity removal component; Please see attached Figure 4 and attached Figure 5The heating component includes a vacuum pump 7, which is fixedly connected to the rear side of the outer wall of the body 1. The input end of the vacuum pump 7 is fixedly connected to an air intake pipe 8. The vacuum pump 7 and the air intake pipe 8 cooperate with each other to extract the air inside the body 1. The outer wall of the air intake pipe 8 is fixedly connected to a heating shell 9, and an electric heating wire 10 is arranged inside the heating shell 9. When the electric heating wire 10 is powered on, it starts to heat up and transfers the heat to the gas in the air intake pipe 8 by heat conduction. The output end of the vacuum pump 7 is fixedly connected to an exhaust pipe 11, and the exhaust pipe 11 is used to discharge the heated gas into the body 1.

[0023] Please see attached Figure 6 The screening assembly includes a plurality of mounting plates 17, which are fixedly connected to the inner wall of the machine body 1. The mounting plates 17 are used to support and fix the slide bar 18, providing a structural basis for the stable operation of the screening assembly. A slide bar 18 is fixedly connected between two adjacent mounting plates 17. The slide bar 18 enables the filter screen 19 to slide back and forth within a certain range, thereby realizing the screening function of the alloy powder. The outer wall of the slide bar 18 is slidably connected with the filter screen 19, and the filter screen 19 is used to screen the alloy powder particles that meet the particle size. The outer wall of the slide bar 18 is provided with a spring 20, and the spring 20 is used to provide a reset force so that the filter screen 19 can be reset.

[0024] Please see attached Figure 2 The impurity removal component includes a magnetic roller 22 and a scraper 23. The magnetic roller 22 is rotatably connected to the inside of the body 1. The magnetic roller 22 uses its own magnetism to adsorb the alloy powder. The scraper 23 is fixedly connected to the inner wall of the body 1. The magnetic roller 22 and the scraper 23 are in contact with each other. The scraper 23 is used to scrape off the alloy powder adsorbed on the surface of the magnetic roller 22.

[0025] Please see attached Figure 8 The driving assembly includes two shells 13, which are fixedly connected to the outer walls of the left and right sides of the body 1 respectively. The shells 13 provide protection and installation space for the internal impeller 14, the rotating shaft 15 and other components. The impeller 14 is rotatably connected inside the shell 13. The impeller 14 can rotate rapidly under the action of the airflow to convert the kinetic energy of the airflow into mechanical energy. The middle part of the impeller 14 is fixedly connected to the rotating shaft 15. The rotating shaft 15 transmits the rotational motion of the impeller 14 to the eccentric wheel 16. Two eccentric wheels 16 are fixedly connected to the outer wall of the rotating shaft 15. The rotation of the eccentric wheel 16 causes the filter screen 19 to vibrate back and forth.

[0026] Please see attached Figure 3A conveying channel 6 is provided on the top wall of the body 1. The conveying channel 6 provides a directional conveying path for the heated gas. Two nozzles 12 are fixedly connected to the inner wall of the conveying channel 6. The nozzles 12 can spray the heated gas at a high speed and uniformly, and impact and atomize the liquid alloy flowing out of the crucible 3, so that the liquid alloy is quickly dispersed into tiny droplets to form alloy powder. The end of the exhaust pipe 11 away from the vacuum pump 7 is fixedly connected to the inside of the nozzle 12, so that the gas extracted by the vacuum pump 7 and heated can smoothly pass through the exhaust pipe 11 into the nozzle 12.

[0027] Please refer to the attached Figure 7 A filter 29 is fixedly connected to the bottom wall of the body 1. The filter 29 is used to filter the air inside the body 1. The end of the air inlet pipe 8 away from the vacuum pump 7 is fixedly connected to the inside of the filter 29 to ensure that the gas extracted by the vacuum pump 7 is purified by the filter 29 before entering the heating component.

[0028] Please refer to the attached Figure 1 and attached Figure 4 The outer wall of the body 1 is fixedly connected with the heat dissipation fins 30, and the outer wall of the exhaust pipe 11 is wrapped around the heat dissipation fins 30. During the discharge process of the high-temperature gas in the exhaust pipe 11, part of the heat can be transferred to the external environment through the heat dissipation fins 30, thereby achieving auxiliary heat dissipation of the exhaust pipe 11 and reducing the operating temperature of the entire device.

[0029] Please refer to the attached Figure 1 and attached Figure 2 The side of the rotating shaft 15 extending out of the shell 13 is fixedly connected to a driving pulley 26, and the side of the magnetic suction roller 22 extending out of the outer wall of the body 1 is fixedly connected to a driven pulley 27. A belt 28 is sleeved between the driving pulley 26 and the driven pulley 27. When the rotating shaft 15 rotates under the rotation of the impeller 14, it will drive the driving pulley 26 to rotate, and further drive the driven pulley 27 to rotate through the belt 28, thereby realizing the linkage between the driving component and the impurity removal component.

[0030] Please refer to the attached Figure 2 Three collecting boxes 25 are fixedly connected to the outer wall of the machine body 1. The three collecting boxes 25 are respectively used to collect particles and agglomerates that do not meet the particle size requirements, particles and agglomerates that meet the particle size requirements, and various impurities, so as to facilitate subsequent processing of alloy powders and impurities in different states. Particles and agglomerates that do not meet the particle size requirements can be reprocessed or otherwise processed to meet the qualified standards; particles and agglomerates that meet the particle size requirements can be directly packaged and used as finished products; and various impurities can be processed centrally to avoid pollution to the environment.

[0031] Please refer to the attached Figure 2A guide plate 21 is fixedly connected to the inner wall of the body 1. The guide plate 21 is used to guide the alloy powder to ensure that the alloy powder can accurately fall on the magnetic suction roller 22. An inclined plate 24 is fixedly connected to the bottom of the body 1. The inclined plate 24 can make the alloy powder and impurities after impurity removal process slide smoothly to the corresponding collection box 25 under the action of gravity.

[0032] Working principle: When alloy powder needs to be prepared, the required alloy raw materials are placed in the crucible 3 in the preparation box 2, and the crucible 3 is heated by the external heating component. At the same time, the heating component is started, the vacuum pump 7 starts to work, and the gas is extracted through the air inlet pipe 8. The gas enters the heating shell 9. The electric heating wire 10 inside the heating shell 9 is energized and heated. The heat is transferred to the gas in the air inlet pipe 8 through heat conduction, so that the gas temperature is increased, and at the same time, the moisture in the gas is removed. The heated gas enters the nozzle 12 through the exhaust pipe 11.

[0033] When the liquid alloy is smelted, the electric one-way valve 5 is opened, and the liquid alloy flows out through the discharge pipe 4 under the action of gravity, forming a stable liquid flow. At the same time, the heated gas ejected at high speed from the nozzle 12 has a strong impact on the falling liquid alloy flow, and the liquid alloy is quickly broken into tiny droplets under the action of the airflow, realizing the atomization process. These tiny droplets are dispersed in the space inside the body 1 under the entrainment of the hot airflow, and begin to cool and solidify to form alloy powder particles.

[0034] The atomized alloy powder particles will first pass through the screening assembly during the falling process in the machine body 1. The impeller 14 in the driving assembly rotates under the action of the airflow, driving the rotating shaft 15 to rotate, and the eccentric wheel 16 on the rotating shaft 15 rotates accordingly, causing the filter screen 19 to slide back and forth on the slide bar 18. When the alloy powder particles fall on the filter screen 19, the particles that meet the particle size requirements continue to fall through the filter screen 19 under the vibration of the filter screen 19 and the action of their own gravity, and the particles that do not meet the requirements will be sent to one of the collection boxes 25.

[0035] The sieved alloy powder continues to fall and reaches the impurity removal component. The magnetic roller 22 is driven by the transmission system consisting of the driving pulley 26, the belt 28 and the driven pulley 27 to rotate. Since the magnetic roller 22 is magnetic, the alloy powder will be adsorbed on the surface of the magnetic roller 22. As the magnetic roller 22 rotates, the scraper 23 scrapes off the adsorbed alloy powder and makes it fall into the collection box 25 specially used for collecting alloy powder, while dust and other impurities will fall into another collection box 25 for collection.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum gas atomized metal and alloy powder production device with screening function, comprising a body (1), characterized in that: The top of the machine body (1) is fixedly connected to a preparation box (2), the interior of the preparation box (2) is fixedly connected to a crucible (3), the bottom of the crucible (3) is fixedly connected to a discharge pipe (4), the outer wall of the discharge pipe (4) is fixedly connected to an electric one-way valve (5), the outer wall of the machine body (1) is provided with a heating component, the top of the machine body (1) is provided with a screening component, the bottom of the machine body (1) is provided with an impurity removal component, and the left and right outer walls of the machine body (1) are both provided with drive components; The heating component comprises a vacuum pump (7), the vacuum pump (7) being fixedly connected to the rear side of the outer wall of the machine body (1), the input end of the vacuum pump (7) being fixedly connected to an air intake pipe (8), the outer wall of the air intake pipe (8) being fixedly connected to a heating shell (9), an electric heating wire (10) being arranged inside the heating shell (9), and the output end of the electric heating wire (10) being fixedly connected to an exhaust pipe (11); The screening assembly comprises a plurality of mounting plates (17), wherein the mounting plates (17) are fixedly connected to the inner wall of the machine body (1), a sliding rod (18) is fixedly connected between two adjacent mounting plates (17), a filter screen (19) is slidably connected to the outer wall of the sliding rod (18), and a spring (20) is sleeved on the outer wall of the sliding rod (18); The impurity removal component comprises a magnetic roller (22) and a scraper (23), wherein the magnetic roller (22) is rotatably connected to the inside of the machine body (1), and the scraper (23) is fixedly connected to the inner wall of the machine body (1), and the magnetic roller (22) and the scraper (23) are in close contact with each other; The driving assembly comprises two housings (13), the two housings (13) being fixedly connected to the left and right outer walls of the machine body (1) respectively, an impeller (14) being rotatably connected inside the housing (13), a rotating shaft (15) being fixedly connected to the middle of the impeller (14), and two eccentric wheels (16) being fixedly connected to the outer wall of the rotating shaft (15).

2. The vacuum gas atomized metal and alloy powder production device with screening function according to claim 1, characterized in that: The inner top wall of the machine body (1) is provided with a conveying channel (6), the inner wall of the conveying channel (6) is fixedly connected to two nozzles (12), and one end of the exhaust pipe (11) away from the vacuum pump (7) is fixedly connected to the inside of the nozzle (12).

3. The vacuum gas atomized metal and alloy powder production device with screening function according to claim 1, characterized in that: A filter (29) is fixedly connected to the inner bottom wall of the machine body (1), and one end of the air inlet pipe (8) away from the vacuum pump (7) is fixedly connected to the inside of the filter (29).

4. The vacuum gas atomized metal and alloy powder production device with screening function according to claim 1, characterized in that: The outer wall of the machine body (1) is fixedly connected with a heat dissipation fin (30), and the outer wall of the exhaust pipe (11) is wound inside the heat dissipation fin (30).

5. The vacuum gas atomized metal and alloy powder production device with screening function according to claim 1, characterized in that: The side of the rotating shaft (15) extending out of the shell (13) is fixedly connected to a driving pulley (26), the side of the magnetic roller (22) extending out of the outer wall of the machine body (1) is fixedly connected to a driven pulley (27), and a belt (28) is sleeved between the driving pulley (26) and the driven pulley (27).

6. The vacuum gas atomized metal and alloy powder production device with screening function according to claim 1, characterized in that: Three collecting boxes (25) are fixedly connected to the outer wall of the machine body (1), and the three collecting boxes (25) are respectively used to collect particles and agglomerates that do not meet the particle size requirements, particles and agglomerates that meet the particle size requirements, and various impurities.

7. The vacuum gas atomized metal and alloy powder production device with screening function according to claim 1, characterized in that: A guide plate (21) is fixedly connected to the inner wall of the machine body (1), and an inclined plate (24) is fixedly connected to the inner bottom of the machine body (1).

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