Power supply device and power supply method for atomizing powder making equipment

Abstract

The present invention relates to a power supply device and a power supply method for atomizing powder making equipment, the power supply device comprises: a mechanical shaft, the mechanical shaft comprises: a shaft shell, a shaft core and a plurality of insulating bases, the shaft shell is in the shape of a sleeve with a first opening on both sides, the shaft shell is sleeved on the outside of the shaft core, and an insulating base is fixed on both sides of each first opening; a plurality of brush holders, the plurality of brush holders are detachably connected to the insulating base; a plurality of dust removal fans; a vibration detection device. The present invention improves the shape of the shaft shell and the insulating base to facilitate the replacement of brushes and brush holders; the vibration detection device can monitor the vibration of the shaft core in real time, and when the outer circle accuracy of the shaft core reaches a critical value, the brush holder can continue to be used after the position is changed by adjusting the installation position of the brush holder and the dust removal fan, thereby reducing the wear degree of the same part of the shaft core, increasing the single service life of a single shaft core, and reducing the frequency of shaft core replacement.

Description

Technical Field

[0001] The invention relates to the technical field of special devices for preparing metal powders, and in particular to a power supply device and a power supply method for atomizing powder making equipment. Background Art

[0002] Plasma rotating electrode process (PREP) is one of the important technologies for producing high-quality spherical metal powders. With the development of metal additive manufacturing, higher requirements are placed on the stability of continuous powder production of PREP equipment.

[0003] The powder making principle of PREP equipment: the electrode rod is connected to the front end of the mechanical shaft system and rotates at high speed under its drive. The plasma gun and the electrode rod are coaxially arranged. After power is turned on, a high-energy plasma arc is generated between the plasma gun and the electrode rod, which melts the front end of the electrode rod into a liquid film. The liquid film is thrown out under the action of centrifugal force to form molten droplets, which are atomized and solidified in an inert atmosphere to form spherical metal powder.

[0004] In the PREP equipment, the mechanical shaft drives the electrode rod to rotate at high speed on the one hand, and supplies power to the electrode rod on the other hand. The mechanical shaft in the atomization powder preparation is usually composed of a shaft seat, a shaft shell, a shaft core, bearings, etc. Among them, the shaft seat is fixed on the PREP equipment, and the shaft shell is installed in the shaft seat. The two are relatively insulated and non-conductive. The bearings and shaft core are installed in the shaft shell. Two brush holders are installed on both sides of the shaft shell, and the two brush holders are arranged oppositely. Two brushes are installed in a single brush holder. The brushes are connected to the power supply, and the plasma arc current is transmitted from the shaft core to the front electrode rod to complete the powder making operation. The front end of the brush fits with the outer surface of the shaft core, and the rear end of the brush is provided with insulating columns, springs, studs, adjusting nuts, fixing plates, etc. in sequence. By adjusting the studs and adjusting nuts, the brush can be pushed forward so that its front end face is close to the shaft core to ensure stable power supply.

[0005] In the PREP equipment, the brushes are arranged on both sides of the shaft core in a relatively embracing manner, and are tightly fitted to the shaft core under the action of the brush clamping assembly. The rear end of the brush is connected to the plasma arc power supply. During the powder making operation, the brushes transfer the current through the shaft core to the electrode rod material.

[0006] The working linear speed of the brush and the shaft core can reach about 130m / s, and the current of the brush can reach up to 4000A. Such a high-speed, high-current brush working environment is rarely used in other fields. In the process of PREP equipment powder making, in order to ensure the stability of the equipment and the life of the mechanical shaft, smoke, sparks, sparks, and bearing jamming should be avoided to avoid affecting production efficiency or causing economic losses. At present, in the production process, when abnormal phenomena such as smoke, sparks, and sparks occur, the powder making will be immediately suspended, the mechanical shaft will be disassembled to clean the carbon powder, and the radial runout of the shaft core will be checked. If the radial runout of the shaft core is greater than 0.05mm (limit value), it needs to be replaced. If the radial runout of the contact position between the brush and the shaft core exceeds the limit value, during the high-speed rotation of the shaft core, the contact wear part will vibrate and fluctuate, and the brush and the shaft core cannot ensure stable and close fit, thereby affecting the current transmission, and white smoke and sparks are very likely to occur. In this case, if the equipment is not stopped, a large amount of heat will be generated when the powder making continues, and the heat will be transferred to the bearing through the shaft core, causing the bearing to jam.

[0007] In the actual production process, the brush and the shaft core fit closely, rotate at high speed, rub, and transmit current, and the contact and wear parts between the brush and the shaft core are easily damaged. When the average powder is about 110, the radial runout of the contact and wear part in the middle of the shaft core will exceed 0.05mm. After exceeding, the shaft core needs to be replaced and the old shaft core needs to be fine-ground and repaired. Frequent replacement of the shaft core will affect production efficiency. A single replacement of the shaft core requires 8 hours of work by a single person, and the shaft core will reach the scrap standard after 6 fine grindings. When the average powder is about 70, the brush carbon powder accumulates too much and will diffuse in the air, connecting the energized brush, shaft core and the unpowered shaft seat, causing creepage short circuit. At this time, the carbon powder will burn, and sparks and black smoke will appear. It is urgent to disassemble the brushes, brush holders and other parts, clean the carbon powder accumulated inside the shaft housing, and reassemble and use after cleaning. The carbon powder cleaning process requires 6 hours of work by a single person. The existing brush power supply structure has the disadvantage that the carbon powder cannot be cleaned in time and needs to be frequently disassembled for cleaning, which seriously affects production efficiency. The brush reaches the scrap standard when about 300 brushes are produced and needs to be disassembled and replaced. It takes about 2 hours for one person to replace a brush. During the brush replacement process, the equipment cannot continue to produce powder, affecting production efficiency.

[0008] In addition, during the rotation of the mechanical shaft, the bearing needs to be continuously lubricated with oil mist, so that there is continuous oil mist entering the shaft shell. Some of the carbon powder generated by the friction between the brush and the shaft core is very easy to stick to the surface of the shaft core under the action of the oil mist, including the contact and wear parts between the shaft core and the brush. Under the friction of high-speed rotation, part of this part of the carbon powder falls off and part remains. In this way, there is a height difference of carbon powder on the surface of the shaft core, which will make the brush and the shaft core unable to fit stably and continuously during the rotation process. When passing through the height difference of carbon powder, there will be slight vibration. However, the slight vibration under high speed will increase the wear and consumption of the brush and reduce the life of the brush. On the other hand, it will affect the stable rotation state of the shaft core. If the carbon powder sticking to the surface of the shaft core is not cleaned for a long time, a large height difference will appear, sparking will occur, and the surface of the shaft core will be damaged, which will accelerate the surface accuracy of the shaft core to exceed the tolerance, reduce the life, and affect production efficiency.

[0009] The existing mechanical shaft brush power supply structure has problems such as low shaft core service life, frequent mechanical shaft carbon powder cleaning and maintenance, and cumbersome brush replacement process, which will affect equipment production efficiency, cause economic losses, and increase production costs.

[0010] Therefore, how to improve the power supply structure of the mechanical shaft brush to increase the single service life of the shaft core, reduce the frequency of mechanical shaft carbon powder cleaning and maintenance, simplify the workload of brush replacement, improve the powder making efficiency of PREP equipment, reduce production costs, and increase production revenue, is a technical problem to be solved in this field.

[0011] Therefore, it is necessary to improve one or more problems existing in the above-mentioned related technical solutions.

[0012] It should be noted that this section is intended to provide background or context for the technical solutions of the present invention stated in the claims. The description herein is not admitted to be prior art by inclusion in this section. Summary of the invention

[0013] The object of the present invention is to provide a power supply device and a power supply method for an atomizing powder making device, thereby solving one or more problems caused by the limitations and defects of the related art at least to a certain extent.

[0014] The present invention first provides a power supply device for atomizing powder making equipment, comprising:

[0015] A mechanical shaft, comprising: a shaft shell, a shaft core and a plurality of insulating bases, wherein the shaft shell is in the shape of a sleeve with first openings on both sides, the shaft shell is sleeved on the outside of the shaft core, and one insulating base is fixed to both sides of each first opening;

[0016] A plurality of brush holders, each of which is detachably connected to the insulating base; the brush holder has a brush mounting portion and a push rod mounting portion, the brush mounting portion and the push rod mounting portion are fixedly connected, the brush mounting portion has a cavity, a ceramic sheet is provided on the inner side of the cavity, a brush is provided in the cavity, an insulating block, a spring and a spiral push rod are fixedly connected to one end of the brush close to the push rod mounting portion in sequence, the push rod mounting portion is provided with a first threaded hole, the spiral push rod is arranged on the push rod mounting portion through the first threaded hole; the brush mounting portion is provided with a plurality of air holes leading to the shaft core;

[0017] A plurality of dust removal fans, wherein the dust removal fans are detachably connected to the insulating base and are used to remove dust from the interior of the shaft housing;

[0018] The vibration detection device is provided with a through hole for installing a vibration detection sensor of the vibration detection device on the shaft housing and the insulating base, and the measuring end of the vibration detection sensor is arranged close to the shaft core.

[0019] In the present invention, the mechanical shaft also includes a shaft seat, a bearing and an insulating ring. The shaft seat is used to be fixedly connected to the atomizing powder making equipment. Second openings are provided on both side surfaces of the shaft seat. The direction of the second opening is the same as that of the first opening. Mounting holes are provided on both end surfaces of the shaft seat. The two ends of the shaft core are installed at the mounting holes of the shaft seat through bearings. The two ends of the shaft shell are also arranged at the mounting holes of the shaft seat. The insulating ring is provided between the shaft shell and the shaft seat.

[0020] In the present invention, the insulating base is provided with a plurality of second threaded holes, and the brush support is provided with a plurality of third threaded holes, and the brush support and the insulating base are connected by screws through the second threaded holes and the third threaded holes.

[0021] In the present invention, an installation space is provided between the brush installation portion and the push rod installation portion for installing the insulating block, the spring and the spiral push rod.

[0022] In the present invention, a clamping groove along the axial direction is provided on the outer side surface of each of the insulating bases, and a clamping structure is provided on the dust removal fan, and the clamping structure is matched with the clamping groove.

[0023] In the present invention, the dust removal fan is connected to a dust removal pipeline, and the dust removal pipeline is communicated with the dust removal system of the atomizing powder making equipment.

[0024] In the present invention, the beating detection device comprises: a transmission rack, a plurality of driven gears, an active steering gear and a plurality of the beating detection sensors, the transmission rack is arranged on the through hole of the shaft housing, a plurality of the driven gears are all meshed with the transmission rack, and a beating detection sensor is threadedly connected to each of the driven gears, and by starting the active steering gear, the transmission rack is driven to rotate, and then the driven gears are driven to rotate accordingly, and finally the driven gears drive the beating detection sensors to rise or fall;

[0025] The vibration detection sensor is arranged directly above the axis of the shaft core.

[0026] In the present invention, the brush supports arranged on the two first openings are arranged opposite to each other, and the vibration detection sensor is arranged between the two brush supports arranged opposite to each other.

[0027] In the present invention, the width of the brush support is the same as the width of the dust removal fan.

[0028] The present invention further provides a power supply method for an atomizing powder making device, which uses any of the power supply devices described above to power the atomizing powder making device, wherein the installation position of the brush support and the installation position of the dust removal fan are interchangeable.

[0029] The technical solution provided by the present invention may include the following beneficial effects:

[0030] In the present invention, the shapes of the shaft shell and the insulating base are improved to facilitate the replacement of the brush and the brush holder; the vibration detection device can be used to monitor the vibration of the shaft core in real time. When the outer circle accuracy of the shaft core reaches a critical value, the brush holder and the dust removal fan can be adjusted to continue to be used after the brush holder is replaced, thereby reducing the degree of wear on the same part of the shaft core, increasing the single service life of a single shaft core, and reducing the replacement frequency of the shaft core; when a brush is worn and needs to be disassembled, it can be disassembled separately and replaced with a new brush, saving the time for brush replacement; at the same time, multiple dust removal fans are used to effectively remove the carbon powder inside the shaft shell, optimize the process of disassembling and cleaning the carbon powder, eliminate the harm of short-circuit sparks caused by carbon powder dispersion to the shaft core and equipment, and improve production efficiency; the air holes arranged on the brush holder can clean the carbon powder stuck on the surface of the shaft core, eliminating the hazards of fast brush consumption and short-circuit sparks damaging the shaft core caused by the sticking of carbon powder on the surface of the shaft core; the powder making efficiency of the atomizing powder making equipment is greatly improved, and the production benefits are increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0032] Figure 1 A schematic diagram showing a power supply structure of a mechanical shaft of a PREP device in the prior art;

[0033] Figure 2 A schematic diagram showing the front view of the power supply structure of the mechanical shaft of the PREP device in the prior art;

[0034] Figure 3 A schematic diagram showing the structure of a power supply device for an atomizing powder making device in an exemplary embodiment of the present invention;

[0035] Figure 4 A schematic diagram showing the front view of the structure of a power supply device for an atomizing powder making device in an exemplary embodiment of the present invention;

[0036] Figure 5 A schematic diagram showing the structure of the shaft housing and the insulating base in an exemplary embodiment of the present invention;

[0037] Figure 6 A schematic structural diagram of an insulating base in an exemplary embodiment of the present invention is shown;

[0038] Figure 7 A schematic diagram showing the structure of a brush support in an exemplary embodiment of the present invention is shown;

[0039] Figure 8 A schematic structural diagram of a brush support in another exemplary embodiment of the present invention is shown;

[0040] Fig. 9 A schematic diagram showing the three-dimensional structure of a power supply device for an atomizing powder making device in an exemplary embodiment of the present invention;

[0041] Fig.10 A schematic diagram showing the structure of the brush contact wear portion in an exemplary embodiment of the present invention;

[0042] Fig.11 A schematic cross-sectional structure diagram of a power supply device for an atomizing powder making device in an exemplary embodiment of the present invention is shown.

[0043] Reference numerals:

[0044] Existing technology:

[0045] 10. Existing shaft housing; 11. Fixing plate; 20. Integrated brush holder; 21. Existing brush; 22. Insulating column; 23. Existing spring; 24. Stud; 25. Adjusting nut; 26. Insulating plate.

[0046] This application:

[0047] 100, mechanical shaft; 101, shaft housing; 1011, first opening; 102, shaft core; 103, insulating base; 1031, slot; 1032, second threaded hole; 104, shaft seat; 1041, second opening; 105, bearing; 106, insulating ring; 107, screw;

[0048] 200, brush support; 201, brush mounting portion; 2011, ceramic sheet; 2012, brush; 2013, third threaded hole; 2014, air hole; 202, ejector pin mounting portion; 2021, first threaded hole; 203, insulating block; 204, spring; 205, spiral ejector pin;

[0049] 300. Dust removal fan;

[0050] 400, a beating detection device; 401, a beating detection sensor; 402, a transmission rack; 403, a driven gear; 404, an active servo; 405, a dust cover;

[0051] 500. Contact wear areas. DETAILED DESCRIPTION

[0052] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present invention will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0053] In addition, the accompanying drawings are only schematic illustrations of embodiments of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar parts, and their repeated descriptions will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0054] First, the mechanical axis power supply structure of the existing PREP equipment is explained.

[0055] The existing PREP equipment mechanical axis power supply structure is as follows Figure 1 and Figure 2As shown, the existing mechanical shaft includes: an existing shaft seat, an existing shaft housing 10, an existing shaft core, an existing bearing, an existing insulating ring, etc. The existing shaft seat is fixed on the PREP device, the existing shaft housing 10 is installed inside the existing shaft seat, and the existing insulating ring is installed between the two, which plays the role of supporting, fixing and mutual insulation. The existing shaft core is concentrically arranged inside the existing shaft housing 10, and is installed by matching the existing bearings at the front and rear ends. An integrated brush holder 20 is installed on both sides of the existing shaft housing 10, and there are two rectangular through holes in the middle position of the integrated brush holder 20, and an insulating plate 26 is pasted on the inner surface of the through hole, which is made of nylon. A single integrated brush holder 20 can be installed with two existing brushes 21. After the existing brush 21 is installed in the integrated brush holder 20, it is facing the axis of the existing shaft core, and the existing contact wear part of the existing brush 21 and the existing shaft core is fixed. A fixing plate 11 is installed on both sides of the existing shaft housing 10, and two circular holes are opened in the middle, and the hole diameter matches the outer diameter of the stud 24. The main body of the fixing plate 11 is made of wood and plays an insulating role. The rear end of the existing brush 21 is connected in sequence with an insulating column 22, an existing spring 23, a stud 24, and an adjusting nut 25. The stud 24 extends into the middle circular hole of the fixing plate 11, and cooperates with the adjusting nut 25 to achieve radial relative fixation of the stud 24 and axial front and rear adjustment. The insulating column 22 is made of wood, with one side plane close to the rear end face of the existing brush 21, and the other side plane close to the existing spring 23. Under the action of the stud 24, the adjusting nut 25, and the existing spring 23, the front end face of the existing brush 21 is pushed to be close to the outer cylindrical surface of the existing shaft core.

[0056] The four existing brushes 21 that are tightly attached to the existing shaft core have inconsistent consumption speeds during the powder making process, and the replacement of the existing brushes 21 is not performed simultaneously. If a certain existing brush 21 reaches the scrap standard, the fixed plate 11 on one side needs to be disassembled, and the adjusting nuts 25, studs 24, existing springs 23, and insulating columns 22 on the rear sides of the two existing brushes 21 on this side need to be removed. After replacing a single existing brush 21, reinstall the fixed plate 11, and then install the two sets of adjusting nuts 25, studs 24, existing springs 23, and insulating columns 22 on this side. In the existing equipment structure, replacing the existing brushes 21 requires 2 hours of work by one person.

[0057] Secondly, combined Figure 3~Figure 11 The power supply device of the present application is described as follows.

[0058] In this exemplary embodiment, a power supply device for an atomizing powder making device is first provided. Figure 3 As shown, the power supply device includes: a mechanical shaft 100, a plurality of brush supports 200, a plurality of dust removal fans 300 and a beating detection device 400.

[0059] Please refer to Figure 3 , Figure 5 and Figure 6The mechanical shaft 100 comprises: a shaft housing 101, a shaft core 102 and a plurality of insulating bases 103. The shaft housing 101 is in the shape of a sleeve with first openings 1011 on both sides. The shaft housing 101 is sleeved on the outside of the shaft core 102. An insulating base 103 is fixed to both sides of each first opening 1011.

[0060] Please refer to Figure 6 The cross-sectional shape of the insulating base 103 may be a trapezoid, and the insulating base 103 may be fixedly connected to the shaft housing 101 by pasting, but is not limited thereto. The insulating base 103 may be made of nylon, which has good electrical insulation capability.

[0061] Please refer to Figure 4 The plurality of brush holders 200 are detachably connected to the insulating base 103 , and each brush holder 200 can be installed and removed individually.

[0062] Please refer to Figure 7 , Figure 8 and Figure 3 The brush support 200 has a brush mounting portion 201 and a push rod mounting portion 202, and the brush mounting portion 201 and the push rod mounting portion 202 are fixedly connected. The brush mounting portion 201 has a cavity, and a ceramic sheet 2011 is provided on the inner side of the cavity, and a brush 2012 is provided in the cavity. An end of the brush 2012 close to the push rod mounting portion 202 is fixedly connected with an insulating block 203, a spring 204 and a spiral push rod 205 in sequence, and the push rod mounting portion 202 is provided with a first threaded hole 2021, and the spiral push rod 205 is arranged on the push rod mounting portion 202 through the first threaded hole 2021.

[0063] The use process of the brush support 200 is as follows:

[0064] When the shaft core 102 needs to be powered, the screw top rod 205 is rotated, the screw top rod 205 compresses the spring 204, and then the spring 204 extends to drive the insulating block 203 and the brush 2012 to move toward the shaft core 102, and the brush 2012 is close to the shaft core 102 to power it. When power is not needed, the screw top rod 205 is rotated in the opposite direction to remove the brush 2012 from the surface of the shaft core 102. In order to facilitate the rotation of the screw top rod 205, a handle can be provided at the end of the screw top rod 205.

[0065] The brush mounting portion 201 is provided with a plurality of air holes 2014 leading to the shaft core 102. The air holes 2014 provided on each brush mounting portion 201 are of the same height. The air holes 2014 are provided directly opposite to the shaft core 102. The airflow introduced from the air holes 2014 is tangent to the shaft core 102, that is, the airflow is used to disturb the carbon powder on the top of the shaft core 102, so that the carbon powder sticking to the surface of the shaft core 102 is blown up, and then the dust removal fan 300 is used to clean it.

[0066] The dust removal fan 300 is detachably connected to the insulating base 103 , and the dust removal fan 300 is used to remove dust from the interior of the shaft housing 101 .

[0067] Please refer to Fig. 9 The shaft housing 101 and the insulating base 103 are provided with through holes for installing the vibration detection sensor 401 of the vibration detection device 400. The measuring end of the vibration detection sensor 401 is arranged close to the shaft core 102 for detecting the vibration of the shaft core 102.

[0068] In this embodiment, the shapes of the shaft housing 101 and the insulating base 103 are improved to facilitate the replacement of the brush 2012 and the brush support 200; the vibration detection device 400 can be used to monitor the vibration of the shaft core 102 in real time. When the outer circle accuracy of the shaft core 102 reaches a critical value, the brush support 200 and the dust removal fan 300 can be adjusted to continue to be used after the brush support 200 is replaced. At the same time, the wear degree of the same part of the shaft core 102 is reduced, the service life of a single shaft core 102 is increased, and the replacement frequency of the shaft core 102 is reduced; when a brush 2012 is worn and needs to be disassembled, it can be removed separately. The brush 2012 can be disassembled and replaced with a new one, thus saving the time of replacing the brush 2012. At the same time, multiple dust removal fans 300 are used to effectively remove the carbon powder inside the shaft housing 101, thus optimizing the process of disassembling and cleaning the carbon powder, eliminating the harm of short-circuit sparking caused by carbon powder dispersion to the shaft core 102 and the equipment, thus improving the production efficiency. The air holes 2014 arranged on the brush support 200 can clean the carbon powder sticking to the surface of the shaft core 102, thus eliminating the harm of the brush 2012 being consumed quickly and the shaft core 102 being damaged by short-circuit sparking caused by the sticking of carbon powder on the surface of the shaft core 102. Thus, the powder making efficiency of the atomizing powder making equipment is greatly improved, thus increasing the production benefits.

[0069] Based on the above examples, please refer to Fig. 9The mechanical shaft 100 further includes a shaft seat 104, a bearing 105 and an insulating ring 106. The shaft seat 104 is used for fixed connection with the atomizing powder making device. Second openings 1041 are provided on both sides of the shaft seat 104. The direction of the second opening 1041 is the same as that of the first opening 1011. Mounting holes are provided on both end faces of the shaft seat 104. Both ends of the shaft core 102 are mounted at the mounting holes of the shaft seat 104 through bearings 105. Both ends of the shaft housing 101 are also arranged at the mounting holes of the shaft seat 104. The insulating ring 106 is provided between the shaft housing 101 and both ends of the shaft seat 104.

[0070] In some embodiments, among the components of the brush support 200, the end surface where the spiral top rod 205 is connected to the spring 204 can be set as a concave groove, which is used to firmly connect one end of the spring 204 in the concave groove. A concave groove can also be set on the end surface where the insulating block 203 is connected to the spring 204, which is also used to firmly connect the other end of the spring 204 in the concave groove. The size of the concave groove matches the outer circle of the spring 204. Optionally, the material of the insulating block 203 can be wood, which is light, insulating and easy to use; the spring 204 can use a heavy-load spring 204 with a thick wire diameter, and both ends are fixed in the concave grooves of the spiral top rod 205 and the insulating block 203 to ensure that the spiral top rod 205, the pressure-resistant spring 204 and the insulating block 203 are coaxial.

[0071] Please refer to Figure 4 , Figure 6 and Figure 7 , the brush holder 200 and the insulating base 103 can be connected by means of screws 107, specifically, a plurality of second threaded holes 1032 are provided on the insulating base 103, a plurality of third threaded holes 2013 are provided on the brush holder 200 (specifically, the brush mounting portion 201), and the screws 107 are passed through the third threaded holes 2013 and screwed into the second threaded holes 1032 for connection. It should be noted that, since a plurality of second threaded holes 1032 are provided on the insulating base 103, the brush holder 200 can select the corresponding second threaded hole 1032 for connection according to the contact position between the brush holder 200 and the shaft core 102.

[0072] Please refer to Figure 7 During the installation of the brush support 200 , in order to facilitate the installation of the insulating block 203 , the spring 204 and the spiral push rod 205 , an installation space is provided between the brush mounting portion 201 and the push rod mounting portion 202 .

[0073] Please refer to Figure 6For the connection between the dust removal fan 300 and the insulating base 103, a slot 1031 along the axial direction is provided on the outer side surface of each insulating base 103, and a buckle structure (not shown in the figure) is provided on the dust removal fan 300, and the buckle structure is adapted to the slot 1031. Optionally, the connection between the dust removal fan 300 and the insulating base 103 is a detachable snap connection mode, which facilitates the installation and removal of the dust removal fan 300.

[0074] Optionally, the length of the slot 1031 on the insulating base 103 may be the same as the length of the insulating base 103 , and is used for installing the dust removal fan 300 .

[0075] In addition, the width of the brush holder 200 is the same as the width of the dust removal fan 300, so that any number of brush holders 200 and dust removal fans 300 can be installed on the shaft housing 101. For example, two brush holders 200 and two dust removal fans 300 are arranged on the first opening 1011 on one side of the shaft housing 101, and two brush holders 200 and two dust removal fans 300 are also arranged on the first opening 1011 on the other side, and the brush holders 200 on the two first openings 1011 should be arranged facing each other. The positions of the paired brush holders 200 and dust removal fans 300 can be swapped.

[0076] It should be noted that after the brush support 200 and the dust removal fan 300 are installed on the shaft housing 101, the shaft housing 101 is in a relatively sealed state.

[0077] In addition, please refer to Figure 7 , Figure 8 and Fig.11 The brush mounting part 201 is provided with a plurality of air holes 2014 for introducing disturbed airflow (such as compressed air). The plurality of air holes 2014 on the two brush mounting parts 201 arranged opposite to each other form a powder cleaning air path, which can clean the carbon powder sticking to the surface of the shaft core 102, thereby eliminating the rapid consumption of the brush 2012 caused by the carbon powder sticking to the surface of the shaft core 102 (the uneven surface of the shaft core 102 causes vibration, which accelerates the loss of the brush 2012) and the damage to the shaft core 102 caused by short circuit ignition (damage caused by poor contact due to unevenness). The disturbed airflow blows the carbon powder sticking to the shaft core 102 so that the dust removal fan 300 can remove it.

[0078] In one embodiment, the dust removal fan 300 is connected to a dust removal pipe, and the dust removal pipe is connected to the dust removal system of the atomizing powder making equipment. The carbon powder sucked out by the dust removal fan 300 is sent to the dust removal system, so that the total amount of carbon powder inside the shaft housing 101 is maintained at a low level, and abnormal situations due to excessive accumulation of carbon powder will not occur.

[0079] The structure and detection process of the vibration detection device 400 are described below.

[0080] Please refer to Fig. 9 The vibration detection device 400 includes: a transmission rack 402, a plurality of driven gears 403, an active steering gear 404 and a plurality of vibration detection sensors 401. The transmission rack 402 is arranged on the through holes on the shaft housing 101 and the insulating base 103, and a plurality of driven gears 403 are meshed with the transmission rack 402. Each driven gear 403 is threadedly connected with a vibration detection sensor 401 (the vibration detection sensor 401 is provided with an external thread, and the driven gear 403 is provided with an internal thread). By starting the active steering gear 404, the transmission rack 402 is driven to rotate, and then the driven gear 403 is driven to rotate accordingly, and finally the driven gear 403 drives the vibration detection sensor 401 to rise or fall. When the vibration detection sensor 401 rises, the vibration of the shaft core 102 is not detected. The vibration detection sensor 401 descends to the detection position (height) to detect the radial vibration of the shaft core 102. The vibration detection sensor 401 is vertically arranged just above the axis of the shaft core 102. Exemplarily, the number of the vibration detection sensors 401 can be 4, but it is not limited thereto. Multiple vibration detection sensors 401 are used to detect radial vibration of different parts of the shaft core 102. In addition, a dust cover 405 is also provided at the through hole.

[0081] The present application also provides a power supply method for an atomizing powder making device, which uses the power supply device described in any of the above embodiments to power the atomizing powder making device, wherein the installation position of the brush holder 200 and the installation position of the dust removal fan 300 are interchangeable.

[0082] In this embodiment, in this embodiment, when the mechanical shaft 100 is finished with the powder making operation and the rotation speed is reduced, it will stay at a rotation speed of 500r / min for 5 seconds. At this time, the vibration detection sensor 401 will measure the radial vibration of the current shaft core 102 surface contact wear part 500 and display the measurement result on the central control operation screen. When a measurement result is greater than 0.05mm, an early warning prompt will be given.

[0083] In this embodiment, after the power supply device for atomizing powder making equipment is installed, the powder making operation is carried out. When the powder making of a single electrode rod is completed and the mechanical shaft 100 is decelerated, the contact wear area 500 between the brush 2012 and the shaft core 102 is measured (please refer to Fig.10) of the radial runout value. When the measurement result is ≤0.05mm, continue to make powder normally; when the measurement result is greater than 0.05mm, an early warning prompt appears. After determining the position of the brush 2012 that causes the early warning, remove the screws 107 of the brush holder 200 on both sides of the shaft core 102 at that position, move the dust removal fan 300 to interchange the position, install the brush holder 200 at another position, and then continue making powder.

[0084] In this embodiment, when the PREP equipment is performing a powder making operation, the dust removal fans 300 on both sides of the mechanical shaft 100 are turned on to suck out the carbon powder generated inside the shaft housing 101 and discharge it into the dust removal system, so that the total amount of carbon powder generated inside the shaft housing 101 due to the friction between the brush 2012 and the shaft core 102 is maintained at a low level, and no abnormal situation will occur due to excessive accumulation of carbon powder.

[0085] In this embodiment, there are differences in the amount of wear of the brushes 2012 at different positions during use. When a brush 2012 is worn to the point where it needs to be replaced, the four screws 107 of the independent brush holder 200 are removed and replaced with a new brush 2012. The brush holder 200 is then installed to its original position, and the four screws 107 are tightened to continue the powder making operation.

[0086] An existing PREP equipment was used as a comparison example to operate in three shifts for one month with the existing mechanical shaft brush power supply structure. The electrode rod material used in the equipment production was fixed to one brand and one specification. The process used was a mature and stable process. The powder making method was fully automatic, and the data was recorded by one person.

[0087] The PREP equipment was replaced with the power supply device for atomizing powder making equipment proposed in the present invention as a test example, and continuous production was carried out for one month. The electrode rods used were of the same brand and specification, the process was the same mature and stable process, the powder making method was fully automatic, and the data was recorded by a single operator. The data comparison results are shown in Table 1.

[0088] Table 1 Comparison results of comparative examples and test examples

[0089]

[0090] Through data comparison, it can be known that the power supply device for atomizing powder making equipment proposed in the present invention can effectively reduce the replacement frequency of the shaft core 102, eliminate the carbon powder cleaning work, greatly improve the powder making efficiency and output, increase production benefits, and reduce production costs; the number of powder making roots in a single month can be increased from the existing 1760 roots to 2530 roots, and the output is increased by 43.75%; the life of a single shaft core 102 is doubled, and the cost of the shaft core 102 is reduced by about 50%.

[0091] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like that may appear in the above description indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention.

[0092] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0093] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] In the embodiments of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0096] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

Claims

1. A power supply device for atomizing powder making equipment, characterized in that: include: A mechanical shaft, comprising: a shaft shell, a shaft core and a plurality of insulating bases, wherein the shaft shell is in the shape of a sleeve with first openings on both sides, the shaft shell is sleeved on the outside of the shaft core, and one insulating base is fixed to both sides of each first opening; A plurality of brush holders, each of which is detachably connected to the insulating base; the brush holder has a brush mounting portion and a push rod mounting portion, the brush mounting portion and the push rod mounting portion are fixedly connected, the brush mounting portion has a cavity, a ceramic sheet is provided on the inner side of the cavity, a brush is provided in the cavity, an insulating block, a spring and a spiral push rod are fixedly connected to one end of the brush close to the push rod mounting portion in sequence, the push rod mounting portion is provided with a first threaded hole, the spiral push rod is arranged on the push rod mounting portion through the first threaded hole; the brush mounting portion is provided with a plurality of air holes leading to the shaft core; A plurality of dust removal fans, wherein the dust removal fans are detachably connected to the insulating base and are used to remove dust from the interior of the shaft housing; The vibration detection device is provided with a through hole for installing a vibration detection sensor of the vibration detection device on the shaft housing and the insulating base, and the measuring end of the vibration detection sensor is arranged close to the shaft core.

2. The power supply device for atomizing powder making equipment according to claim 1, characterized in that: The mechanical shaft also includes a shaft seat, a bearing and an insulating ring. The shaft seat is used to be fixedly connected to the atomizing powder making equipment. Second openings are provided on both side surfaces of the shaft seat. The direction of the second opening is the same as that of the first opening. Mounting holes are provided on both end surfaces of the shaft seat. The two ends of the shaft core are installed at the mounting holes of the shaft seat through bearings. The two ends of the shaft shell are also arranged at the mounting holes of the shaft seat. The insulating ring is provided between the shaft shell and the shaft seat.

3. The power supply device for atomizing powder making equipment according to claim 1, characterized in that: The insulating base is provided with a plurality of second threaded holes, and the brush support is provided with a plurality of third threaded holes. The brush support and the insulating base are connected by screws through the second threaded holes and the third threaded holes.

4. The power supply device for atomizing powder making equipment according to claim 1, characterized in that: An installation space is provided between the brush installation portion and the push rod installation portion for installing the insulating block, the spring and the spiral push rod.

5. The power supply device for atomizing powder making equipment according to claim 1, characterized in that: A clamping groove along the axial direction is provided on the outer side surface of each insulating base, and a clamping structure is provided on the dust removal fan, and the clamping structure is adapted to the clamping groove.

6. The power supply device for atomizing powder making equipment according to claim 1, characterized in that: The dust removal fan is connected to a dust removal pipeline, and the dust removal pipeline is communicated with the dust removal system of the atomizing powder making equipment.

7. The power supply device for atomizing powder making equipment according to claim 1, characterized in that: The beating detection device comprises: a transmission rack, a plurality of driven gears, an active steering gear and a plurality of the beating detection sensors, wherein the transmission rack is arranged on the through hole of the shaft housing, the plurality of driven gears are all meshed with the transmission rack, and each of the driven gears is threadedly connected with a beating detection sensor, and by starting the active steering gear, the transmission rack is driven to rotate, and then the driven gears are driven to rotate accordingly, and finally the driven gears drive the beating detection sensors to rise or fall; The vibration detection sensor is arranged directly above the axis of the shaft core.

8. The power supply device for atomizing powder making equipment according to claim 7, characterized in that: The brush supports arranged on the two first openings are arranged opposite to each other, and the vibration detection sensor is arranged between the two brush supports arranged opposite to each other.

9. The power supply device for atomizing powder making equipment according to any one of claims 1 to 8, characterized in that: The width of the brush support is the same as the width of the dust removal fan.

10. A power supply method for atomizing powder making equipment, characterized in that: The power supply device according to any one of claims 1 to 9 is used to power an atomizing powder making device, wherein the installation position of the brush support and the installation position of the dust removal fan are interchangeable.

Images