Rotating electrode powder manufacturing device and production line

Abstract

The utility model belongs to the technical field of metal powder preparation, and discloses a rotating electrode powder manufacturing device and a production line, the rotating electrode powder manufacturing device comprises a box body, a shaft core, a first bearing and liquid metal, a containing cavity is arranged in the box body, the box body is further provided with a liquid injection port communicated with the containing cavity, the liquid metal can be injected into the containing cavity through the liquid injection port, and the shaft core penetrates through the box body. Part of the shaft core is located in the containing cavity and immersed in the liquid metal, and the two ends of the shaft core are rotationally connected with the box body through first bearings correspondingly. The shaft core is connected with the box body through liquid metal, so that the friction loss of the carbon brush and the shaft core is fundamentally solved, the pollution of carbon powder to equipment is eliminated, and the shaft core is prevented from generating friction heat; the integral stress of the shaft core is balanced, the deformation of the shaft core and the bearing can be avoided, the damage of the bearing is reduced, the downtime of equipment is reduced, the production efficiency is improved and the production safety is ensured; in addition, the liquid metal is in sufficient and stable contact with the shaft core, the current continuity and stability are good, and the particle uniformity of the powder can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal powder preparation technical field especially relates to a rotating electrode powder preparation device and production line. BACKGROUND

[0002] Rotating electrode powder preparation technology is to make consumable electrode with metal or alloy, the end face is heated by electric arc and melts into liquid, the liquid is thrown out and crushed into small droplets by the centrifugal force of high-speed rotating electrode, and then condensed into powder, the metal powder produced by the technology has the advantages of concentrated particle size distribution, high sphericity, good fluidity, less impurity content, high fine powder yield, no hollow structure and the like, and is widely used in powder metallurgy fields such as hot isostatic pressing, thermal spraying and porous catalytic filler due to its excellent performance.

[0003] The existing rotating electrode powder preparation device usually uses a carbon brush to connect the shaft core and the electrode, uses a spring or air pressure to keep the pressure of the carbon brush on the shaft core, so that the carbon brush is in good contact with the electrode to ensure stable current transmission. The high-speed rotating shaft core has great loss to the shaft core itself and the carbon brush, and the carbon powder generated by the wear of the carbon brush is easy to pollute the equipment, so that professional personnel often need to stop the machine for disassembly, replacement and cleaning, which is time-consuming and laborious and affects the production efficiency. In addition, the pressure of the carbon brush on the shaft core is uneven, which is easy to cause deformation of the shaft core, resulting in poor continuity and stability of the current and affecting the particle uniformity of the powder. In addition, the friction heat between the shaft core and the carbon brush is quite large, which has the risk of causing fire.

[0004] Therefore, it is urgent to provide a rotating electrode powder preparation device and production line to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a rotating electrode powder preparation device and production line, which balances the stress of the shaft core, avoids deformation of the shaft core and bearing, reduces the loss of the shaft core, reduces the downtime of the equipment, improves the production efficiency, improves the particle uniformity of the powder and ensures production safety.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] A rotating electrode powder preparation device, comprising a box body, a shaft core, a first bearing and liquid metal, the box body has an accommodating cavity inside, the box body is also provided with a liquid injection opening in communication with the accommodating cavity, the liquid metal can be injected into the accommodating cavity through the liquid injection opening, the shaft core penetrates through the box body, part of the shaft core is located in the accommodating cavity and immersed in the liquid metal, and both ends of the shaft core are rotatably connected with the box body through the first bearing.

[0008] Further, the box body is grounded.

[0009] Further, the rotating electrode powder production device further comprises a pressure regulating assembly, which is sealingly connected to the liquid injection opening and capable of adjusting the liquid pressure in the accommodating cavity.

[0010] Further, the pressure regulating assembly comprises a sealing piston, an elastic member and a pressure cover, the pressure cover is connected to the box body, the sealing piston is slidingly and sealingly fitted to the liquid injection opening, and the elastic member is arranged between the sealing piston and the pressure cover.

[0011] Further, the pressure cover is adjustably connected to the box body in the axial direction of the liquid injection opening.

[0012] Further, the pressure cover is threadedly connected to the box body.

[0013] Further, the rotating electrode powder production device further comprises a cooling circulation mechanism, and the box body is further provided with a cooling liquid flow channel, and the cooling circulation mechanism circulates cooling liquid through the cooling liquid flow channel.

[0014] Further, the cooling liquid flow channel surrounds the accommodating cavity.

[0015] Further, the rotating electrode powder production device further comprises a second bearing, the outer diameter of the second bearing is smaller than that of the first bearing, the second bearing is sleeved on the shaft core and rotationally connected to the box body, and the second bearing is located on the side of the first bearing close to the accommodating cavity.

[0016] A rotating electrode powder production line comprises a collecting device and the rotating electrode powder production device as described above, and the collecting device is used for collecting the powder produced by the rotating electrode powder production device.

[0017] The utility model discloses beneficial effects:

[0018] The utility model provides a rotating electrode powder production device and production line, including box body, shaft core, first bearing and liquid metal, and the inside of box body has the accommodating cavity, and the box body is further provided with the liquid injection opening who communicates with the accommodating cavity, and the liquid metal can inject the accommodating cavity through the liquid injection opening, and the shaft core passes through the box body, and part shaft core is located in the accommodating cavity and is immersed in the liquid metal, and the both ends of shaft core are connected with the box body rotationally through the first bearing. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1It is the structure schematic view of the rotating electrode powder making device of the utility model;

[0020] Figure 2 It is the side view of the rotating electrode powder making device of the utility model;

[0021] Figure 3 It is Figure 2 The section view at A-A in figure.

[0022] In the figure,

[0023] 1, box body;11, containing cavity;12, liquid injection port;13, cooling liquid flow channel;

[0024] 2, shaft core;

[0025] 3, first bearing;

[0026] 4, pressure regulating assembly;41, sealing piston;42, elastic member;43, gland;

[0027] 5, second bearing. DETAILED DESCRIPTION

[0028] The utility model will be further explained in detail in combination with the drawings and examples.It can be understood that the specific examples described here are only used to explain the utility model, and not limit the utility model.In addition, it needs to be explained that in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all the structures.

[0029] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them.Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0031] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] As shown in Figures 1-3 The present embodiment provides a rotating electrode powder making device, which comprises a box body 1, a shaft core 2, a first bearing 3 and a liquid metal. The box body 1 has an accommodating cavity 11 inside. The box body 1 is also provided with a liquid injection port 12 which communicates with the accommodating cavity 11. The liquid metal can be injected into the accommodating cavity 11 through the liquid injection port 12. The shaft core 2 penetrates through the box body 1, and part of the shaft core 2 is located in the accommodating cavity 11 and immersed in the liquid metal. The two ends of the shaft core 2 are respectively connected with the box body 1 in rotation through the first bearing 3. The shaft core 2 is connected with the box body 1 through the liquid metal, which fundamentally solves the friction loss of the carbon brush and the shaft core 2, eliminates the pollution of carbon powder to the equipment, and avoids the generation of friction heat of the shaft core 2. The shaft core 2 is in balanced stress as a whole, which can avoid the deformation of the shaft core 2 and the bearing, reduce the damage of the bearing, reduce the downtime of the equipment, improve the production efficiency, ensure the production safety, and improve the uniformity of the powder particles.

[0033] The liquid metal is mercury, which has the advantages of low melting point, good electrical conductivity, easy availability and low price. Alternatively, the liquid metal includes but is not limited to materials such as gallium-indium-tin alloy, without limitation here.

[0034] In the present embodiment, the box body 1 is grounded, the shaft core 2 is electrically connected with the box body 1 through the liquid metal, the shaft core 2 serves as an anode, and a cathode potential lower than the ground potential can form a path to realize powder making. The liquid metal does not need to be connected to a power source, which is convenient to assemble, simple in structure and high in safety.

[0035] As shown in Figure 3 As the volume of the liquid expands due to heating, the pressure will increase. The rotating electrode powder making device further comprises a pressure regulating assembly 4 which is sealingly connected to the liquid injection port 12 and can regulate the liquid pressure in the accommodating cavity 11, so that the liquid metal in the accommodating cavity 11 always maintains an appropriate pressure on the shaft core 2, thereby realizing stable current transmission of the high-speed rotating shaft core 2.

[0036] Specifically, the pressure regulating assembly 4 comprises a sealing piston 41, an elastic member 42 and a gland 43, the gland 43 is connected to the box 1, the sealing piston 41 is slidingly and sealingly fitted to the liquid inlet 12, the elastic member 42 is arranged between the sealing piston 41 and the gland 43, the sealing piston 41 always keeps pressure on the liquid metal in the containing cavity 11, and the combination of the sealing piston 41 and the elastic member 42 can absorb the thermal expansion of the liquid metal, so as to keep the pressure of the liquid metal in the containing cavity 11 stable. The elastic member 42 includes but is not limited to a spring, a bellows or an elastic rubber body, etc., which is not limited here.

[0037] Further, the gland 43 is adjustably connected to the box 1 along the axial position of the liquid inlet 12, and by adjusting the position of the gland 43 in the axial direction of the liquid inlet 12, the compression amount of the elastic member 42 can be adjusted, so as to realize the adjustment of the pressure of the liquid metal.

[0038] In the embodiment, the gland 43 is threadedly connected to the box 1, and the position of the gland 43 can be conveniently adjusted by screwing. Alternatively, the connection mode of the gland 43 and the box 1 can also be clamping or abutting through a fixing member, etc., which is not limited here.

[0039] In another alternative embodiment, the pressure regulating assembly 4 can also be provided as a pressure relief pipe connected to the top of the containing cavity 11, and when the liquid metal is heated and expanded, it can overflow into the pressure relief pipe to avoid the risk of excessive pressure in the containing cavity 11.

[0040] In addition, the rotating electrode powder production device also comprises a cooling circulation mechanism, and the box 1 is also provided with a cooling liquid flow channel 13, the cooling circulation mechanism circulates the cooling liquid through the cooling liquid flow channel 13, can take away the heat of the liquid metal, can prolong the service life of the device, improve the current transmission efficiency, and further ensure the production safety.

[0041] Further, the cooling liquid flow channel 13 surrounds the containing cavity 11, which can prolong the flow path of the cooling liquid, increase the contact area between the cooling liquid and the box 1, and thus improve the heat dissipation effect.

[0042] Alternatively, the rotating electrode powder production device further comprises a second bearing 5, the outer diameter of the second bearing 5 is smaller than that of the first bearing 3, the second bearing 5 is sleeved on the shaft core 2 and is rotationally connected with the box 1, and the second bearing 5 is located on the side of the first bearing 3 close to the containing cavity 11. By arranging the second bearing 5 between the containing cavity 11 and the first bearing 3, and the outer diameter of the second bearing 5 is smaller than that of the first bearing 3, which is conducive to improving the sealing between the bearing and the box 1, and preventing the cooling liquid from leaking.

[0043] The embodiment also provides a rotating electrode powder production line, which comprises a collecting device and the rotating electrode powder production device in any of the above embodiments, and the collecting device is used for collecting the powder produced by the rotating electrode powder production device.

[0044] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A rotating electrode powder production device, characterized by comprising: The device comprises a box (1), a shaft core (2), a first bearing (3) and liquid metal, the box (1) has a containing cavity (11) inside, the box (1) is also provided with a liquid injection opening (12) which communicates with the containing cavity (11), the liquid metal can be injected into the containing cavity (11) through the liquid injection opening (12), the shaft core (2) penetrates through the box (1), part of the shaft core (2) is located in the containing cavity (11) and is immersed in the liquid metal, and two ends of the shaft core (2) are rotatably connected with the box (1) through the first bearing (3) respectively.

2. The rotary electrode pulverizing device according to claim 1, wherein The box (1) is grounded.

3. The rotary electrode pulverizing device according to claim 1, wherein The device further comprises a pressure regulating assembly (4) which is sealingly connected to the liquid injection opening (12) and can regulate the liquid pressure in the containing cavity (11).

4. The rotary electrode pulverizing device according to claim 3, wherein The pressure regulating assembly (4) comprises a sealing piston (41), an elastic member (42) and a gland (43), the gland (43) is connected to the box (1), the sealing piston (41) is slidingly and sealingly fitted in the liquid injection opening (12), and the elastic member (42) is arranged between the sealing piston (41) and the gland (43).

5. The rotary electrode pulverizing device according to claim 4, wherein The gland (43) is adjustably connected to the box (1) along the axial position of the liquid injection opening (12).

6. The rotary electrode pulverizing device according to claim 5, wherein The gland (43) is threadedly connected with the box (1).

7. The rotary electrode pulverizing device according to claim 1, wherein The device further comprises a cooling circulation mechanism, and the box (1) is also provided with a cooling liquid flow channel (13), and the cooling circulation mechanism circulates cooling liquid through the cooling liquid flow channel (13).

8. The rotary electrode pulverizing device according to claim 7, wherein The cooling liquid flow channel (13) surrounds the containing cavity (11).

9. The rotary electrode pulverizing device according to any one of claims 1 to 8, characterized by The device further comprises a second bearing (5), the outer diameter of the second bearing (5) is smaller than that of the first bearing (3), the second bearing (5) is sleeved on the shaft core (2) and is rotatably connected with the box (1), and the second bearing (5) is located on the side of the first bearing (3) which is close to the containing cavity (11).

10. A rotating electrode powder production line, characterized by The device comprises a collecting device and the rotating electrode powder production device according to any one of claims 1-9, and the collecting device is used for collecting the powder produced by the rotating electrode powder production device.

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