Boron carbide powder nanometer powder preparation device

Abstract

The invention relates to the technical field of boron carbide preparation, in particular to a boron carbide nano powder preparation device which comprises a mixing module and a stirring module, the mixing module comprises a base and a stirring container, a driving motor is installed on the lower portion of the base, an eccentric block used for driving the stirring container to vibrate is installed at the output end of the driving motor, and the eccentric block is connected with the stirring container. A stirring base connected with a driving motor is arranged on the lower portion of the stirring container, a buffer spring is installed between the bottom of the stirring container and the base, the stirring module comprises a support located on the outer side of the base, a sealing cover body located above the stirring container is arranged on the support, and a stirring assembly used for stirring materials is installed on the sealing cover body. The stirring assembly and the stirring base are connected through the transmission shaft and then are in transmission, synchronous driving of the material mixing module and the stirring module is achieved through the driving motor, the material stirring strength is enhanced, and the material uniformizing effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of boron carbide preparation, and specifically relates to a device for preparing boron carbide powder nano-powder. Background Art

[0002] Boron carbide (B4C) is a ceramic material with high hardness and low density, and is widely used in fields such as armor, wear-resistant components, and the nuclear industry. Its preparation processes mainly include carbothermal reduction method, self-propagating high-temperature synthesis method, chemical vapor deposition, etc.

[0003] Among them, the carbothermal reduction method mainly completes the process through raw material mixing, high-temperature reaction, and crushing. It has the advantages of low cost and suitability for large-scale production. The uniformity of the raw material mixing directly affects the quality of the later finished product. The existing raw material mixing method is completed by mechanical stirring. For example, Chinese Patent (Patent No.: 202222361056.2) discloses a boron carbide coating stirring device with hierarchical circulation stirring, belonging to the field of stirring equipment. A boron carbide coating stirring device with hierarchical circulation stirring includes a primary stirring tank, a secondary stirring tank, and a tertiary stirring tank. A negative pressure fan is fixedly installed between two connecting columns on one side of the secondary stirring tank through bolts, and a connecting pipe one and a connecting pipe two are respectively fixedly connected to the top and bottom of the negative pressure fan. One side of the bottom of the secondary stirring tank and one side of the top of the tertiary stirring tank are connected through a connecting pipe three. It has the advantages of an integrated tower structure integrating multiple stirring tanks, high integration, and small floor area, and adopts the method of separately feeding into the internal primary stirring of separate stirring tanks, so that a variety of raw materials are stirred in multiple stages separately, improving the uniformity of the stirring of a variety of raw materials, avoiding the possible phenomenon of uneven stirring of the stirred raw materials, and improving the uniformity and use effect of the product.

[0004] This method still realizes the mixing of materials through stirring during use. Although changing the feeding method can improve the material mixing effect to a certain extent, during use, there is still a situation where the materials in the stirring tank cannot be completely covered, that is, some materials do not participate in the stirring process during the stirring process, resulting in poor material mixing effect and affecting the quality of the later product. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a device for preparing boron carbide powder nano-powder, which uses a mixing module and a stirring module to fully mix the materials, and can effectively improve the material mixing effect.

[0006] In order to achieve the above object, the embodiments of the present invention specifically adopt the following technical solutions: A device for preparing boron carbide powder nanoparticles, including a mixing module and a stirring module. The mixing module includes a base and a stirring container. A driving motor is arranged at the lower part of the base, an eccentric block is arranged at the output end of the driving motor, a stirring seat connected to the driving motor is arranged at the lower part of the stirring container, and a buffer spring is arranged between the lower part of the stirring container and the base. The stirring module includes a bracket outside the base, a sealing cover body is arranged on the bracket above the stirring container, a stirring component is arranged on the sealing cover body, and a transmission shaft is arranged between the stirring component and the stirring seat.

[0007] As a further improvement of the above technical solution:

[0008] The stirring seat includes a positioning plate arranged at the bottom of the stirring container, a transmission plate is arranged above the positioning plate, buffer columns are arranged between the positioning plate and the transmission plate, and a protective housing is arranged outside the transmission plate.

[0009] A rotating shaft one for installing the eccentric block is arranged in the middle of the positioning plate, and a rotating shaft two extending above the protective housing is arranged in the middle of the transmission plate.

[0010] A rotating joint connected to the transmission shaft is arranged at the upper part of the rotating shaft two.

[0011] The stirring component includes a turntable sleeved on the transmission shaft, a sealing cover is arranged at the upper part of the turntable, a rotary gear disc is arranged at the connection between the sealing cover and the sealing cover body, a stirring shaft that makes a circular motion in the stirring container is arranged on the turntable, and stirring arms are arranged on the stirring shaft.

[0012] A planetary drive gear disc is arranged at the upper part of the transmission shaft, a transmission gear set located between the planetary drive gear disc and the rotary wheel disc is arranged on the sealing cover, a self-rotation drive gear disc is arranged at the lower part of the transmission shaft, and a driven gear disc meshed with the self-rotation drive gear disc is arranged at the upper part of the stirring shaft.

[0013] A sliding sleeve connected to the stirring shaft is arranged in the middle of the stirring arm, a limiting sleeve located at the lower end of the stirring shaft is arranged at the lower part of the sliding sleeve, a vertical rod is arranged in the transmission shaft, and a driving device for driving the vertical rod to move longitudinally is arranged at the upper part of the stirring shaft.

[0014] The driving device includes a driving sleeve above the stirring shaft, a slider is arranged on the inner side wall of the driving sleeve, a track groove cooperating with the slider is arranged on the side wall of the vertical rod, and the slider drives the vertical rod to lift in the stirring shaft after sliding in the track groove.

[0015] A sliding key groove is provided on the inner side wall of the stirring shaft, which is key-connected to the middle part of the vertical rod. A limiting plate is provided below the sliding key groove, and a return spring sleeved on the vertical rod is provided on the limiting plate.

[0016] A positioning sleeve for installing the stirring shaft is provided on the turntable, and a buffer cushion block is provided at the connection between the lower part of the positioning sleeve and the sliding sleeve.

[0017] The beneficial effects of the embodiments of the present invention are as follows: The boron carbide powder nanometer powder preparation device includes a mixing module and a stirring module. The mixing module includes a base and a stirring container. A driving motor is installed at the lower part of the base, and an eccentric block for driving the stirring container to vibrate is installed at the output end of the driving motor. A stirring seat connected to the driving motor is provided at the lower part of the stirring container, and a buffer spring is installed between the bottom of the stirring container and the base. The stirring module includes a bracket outside the base. A sealing cover body is provided on the bracket above the stirring container. A stirring component for stirring materials is installed on the sealing cover body. The stirring component and the stirring seat are connected by a transmission shaft and driven. The driving motor is used to synchronously drive the mixing module and the stirring module, enhancing the stirring intensity of the materials and improving the material homogenization effect.

[0018] The stirring component includes a turntable sleeved on the transmission shaft. A sealing cover is provided on the upper part of the turntable. A rotary gear disc is provided at the connection between the sealing cover and the sealing cover body. A stirring shaft that makes a circular motion in the stirring container is provided on the turntable. Stirring arms are provided on the stirring shaft. After the transmission shaft is connected to the stirring seat, the same driving source is used for the driving operation of material homogenization, which can simplify the equipment structure and save the manufacturing cost of the equipment. Especially compared with the current material homogenization method of two-step operations of stirring and vibration, it can greatly improve the material homogenization efficiency and will not reduce the material homogenization effect.

[0019] The vertical rod moves up and down along the sliding key groove under the action of the driving device. A limiting plate is provided on the inner side wall of the stirring shaft below the sliding key groove, and a return spring sleeved on the vertical rod is provided on the limiting plate. The up and down movement of the vertical rod can drive the stirring arms to vibrate, longitudinally shear and stir the materials, and cooperate with the rotation and revolution of the stirring shaft and the vibration of the stirring container to stir and mix the materials in multiple dimensions, improving the mixing degree of the carbon source and the boron source.

[0020] The mixing module and the stirring module use the same driving source for operation and are linked through the stirring seat. While not affecting the vibration operation, it can drive the stirring module to operate and perform synchronous multi-dimensional stirring of the materials, improving the uniformity of material mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the overall structural schematic diagram of the present invention;

[0022] Figure 2 Cross-sectional view of the present invention;

[0023] Figure 3 Schematic structural view of the stirring base in the present invention;

[0024] Figure 4 Schematic structural view of the rotating joint in the present invention;

[0025] Figure 5 is Figure 2 Enlarged structural view of part A in

[0026] Figure 6 Schematic structural view of the turntable in the present invention;

[0027] Figure 7 Schematic structural view of the stirring assembly in the present invention;

[0028] Figure 8 Schematic structural view of the vertical rod in the present invention.

[0029] In the figure: 1, base; 2, stirring container; 3, driving motor; 4, eccentric block; 5, stirring base; 6, buffer spring; 7, bracket; 8, sealing cover body; 9, transmission shaft; 10, positioning plate; 11, transmission plate; 12, buffer column; 13, protective housing; 14, rotating shaft one; 15, rotating shaft two; 16, rotating joint; 17, turntable; 18, sealing cover; 19, stirring shaft; 20, stirring arm; 21, revolution driving gear disc; 22, transmission gear set; 23, rotation driving gear disc; 24, driven gear disc; 25, sliding sleeve; 26, limiting sleeve; 27, vertical rod; 28, driving sleeve; 29, slider; 30, track groove; 31, sliding key groove; 32, limiting plate; 33, return spring; 34, positioning sleeve; 35, revolving gear disc; 36, buffer cushion block. Detailed implementation manners

[0030] The following describes the preferred implementation manners of the present invention with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0031] Such as Figure 1-2As shown in the figure, the device for preparing boron carbide powder nano-powder in this embodiment includes a mixing module and a stirring module. The mixing module includes a base 1 and a stirring container 2. A driving motor 3 is installed at the lower part of the base 1, and an eccentric block 4 for driving the stirring container 2 to vibrate is installed at the output end of the driving motor 3. A stirring seat 5 connected to the driving motor 3 is provided at the lower part of the stirring container 2. A buffer spring 6 is installed between the bottom of the stirring container and the base 1. The stirring module includes a bracket 7 outside the base 1. A sealing cover body 8 is provided above the stirring container 2 on the bracket 7. A cantilever is installed on the bracket 7, and the oil cylinder is used to drive the cantilever to lift, so as to complete the lifting of the sealing cover body 8. An elastic enclosure is provided at the lower part of the sealing cover body 8, which fits with the upper end of the stirring container 2, which can not only achieve the sealing effect, but also play an energy absorption role to prevent the sealing cover body 8 from shaking. A stirring component for stirring materials is installed on the sealing cover body 8. The stirring component and the stirring seat 5 are connected by a transmission shaft 9 for transmission. The driving motor 3 is used to synchronously drive the mixing module and the stirring module, enhance the stirring intensity of the materials, and improve the material mixing effect.

[0032] As Figure 3-4 shown, the stirring seat 5 includes a positioning plate 10 installed at the bottom of the stirring container 2. A transmission plate 11 is installed above the positioning plate 10. Buffer columns 12 are provided between the positioning plate 10 and the transmission plate 11. Through the stirring seat 5, transmission can be realized during operation and buffer shock absorption can also be carried out. An outer protective shell 13 is provided outside the transmission plate 11. An annular cushion block is provided at one end of the protective shell 13 in contact with the transmission plate 11 for sealing and shock absorption. A rotating shaft 14 for installing the eccentric block 4 is provided in the middle of the positioning plate 10. A rotating shaft 2 15 extending above the protective shell 13 is provided in the middle of the transmission plate 11. A rotating joint 16 connected to the transmission shaft 9 is provided at the upper part of the rotating shaft 2 15. A cross positioning seat is designed on the upper surface of the rotating joint 16 to facilitate the connection and fixation of the transmission shaft 9 and the rotating shaft 2 15. The function of the stirring seat 5 is to drive the eccentric block 4 to rotate, so as to drive the stirring container 2 to vibrate, realize the vibration effect on the materials. At the same time, it can also drive the transmission shaft 9 to rotate, and then complete the drive of the stirring component, and complete the stirring operation of the materials. Through the coordinated operation of vibration and stirring, the material mixing effect of the powder mixing operation is improved, and the phenomenon of local material accumulation leading to reduced mixing effect and affecting the overall quality of boron carbide is avoided.

[0033] As Figure 5 shown, the stirring component includes a turntable 17 sleeved on the transmission shaft 9. A sealing cover 18 is provided at the upper part of the turntable 17. A rotary gear disk 35 is provided at the connection between the sealing cover 18 and the sealing cover body 8. Stirring shafts 19 that make circular motions in the stirring container 2 are provided on the turntable 17. Stirring arms 20 are provided on the stirring shafts 19. A transmission module for driving the stirring shafts 19 to operate is installed in the sealing cover 18 and the turntable 17.

[0034] As Figure 6 shown, a revolution drive gear disc 21 is provided at the upper part of a transmission shaft 9, and a transmission gear set 22 located between the revolution drive gear disc 21 and a rotary wheel disc is provided on a sealing cover 18. The transmission gear set 22 is used to realize the rotation of a turntable 17 and the sealing cover 18, and further drive a stirring shaft 19 to perform a circular motion on the turntable 17. A rotation drive gear disc 23 is provided at the lower part of the transmission shaft 9, and a driven gear disc 24 meshed with the rotation drive gear disc 23 is provided at the upper part of the stirring shaft 19. The design of the rotation drive gear disc 23 and the driven gear disc 24 can drive the stirring shaft 19 to rotate, and further drive a stirring arm 20 to perform a stirring operation on materials. While vibrating and leveling the materials, the stirring arm 20 is used to disturb the materials, so as to avoid the reduction of the leveling effect caused by the deposition of materials due to inconsistent particle sizes.

[0035] As Figure 7-8 shown, a sliding sleeve 25 connected to the stirring shaft 19 is provided in the middle of the stirring arm 20, a limiting sleeve 26 located at the lower end of the stirring shaft 19 is provided at the lower part of the sliding sleeve 25, a vertical rod 27 is provided in the transmission shaft 9, and a driving device for driving the vertical rod 27 to move longitudinally is provided at the upper part of the stirring shaft 19. The top of the vertical rod 27 is connected to the driving device, and the lower part is located in the limiting sleeve 26. A buffer block abutting against the lower end of the vertical rod 27 is provided at the bottom of the limiting sleeve 26. The middle part of the vertical rod 27 is key-connected to the stirring shaft 19, a sliding key groove 31 is provided on the inner side wall of the stirring shaft 19, the vertical rod 27 is lifted and lowered along the sliding key groove 31 under the action of the driving device, a limiting plate 32 located on the inner side wall of the stirring shaft 19 is provided below the sliding key groove 31, and a return spring 33 sleeved on the vertical rod 27 is provided on the limiting plate 32. The function of the return spring 33 is to provide a driving force for resetting the vertical rod 27.

[0036] The driving device includes a driving sleeve 28 located above the stirring shaft 19. A sliding block 29 is provided on the inner side wall of the driving sleeve 28. A track groove 30 for cooperating with the sliding block 29 is provided on the side wall of the vertical rod 27. The track groove 30 includes a settling part, a transition part and a lifting part. The lifting and lowering drive of the vertical rod 27 is realized by the rolling of the sliding block 29 in the track groove 30. After the sliding block 29 slides in the track groove 30, the vertical rod 27 is driven to lift and lower in the stirring shaft 19, and further drives the stirring arm 20 to vibrate, providing a longitudinal shearing force for the materials, improving the mixing degree between the mixed materials, and making the leveling effect reach the best.

[0037] A positioning sleeve 34 for installing the stirring shaft 19 is provided on the turntable 17. A buffer cushion block 36 is provided at the connection part between the lower part of the positioning sleeve 34 and the sliding sleeve 25. The design of the buffer cushion block 36 can provide a position avoidance by extrusion deformation when the stirring arm 20 vibrates. At the same time, the buffer cushion block 36 can also absorb vibrations to avoid the transmission of vibrations to the turntable 17.

[0038] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0039] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article, or device / equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in these processes, articles, or devices / equipment.

[0041] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A preparation device for boron carbide powder nanopowder, comprising a mixing module and a stirring module, characterized in that, The mixing module includes a base (1) and a stirring container (2). A driving motor (3) is arranged at the lower part of the base (1). An eccentric block (4) is arranged at the output end of the driving motor (3). A stirring seat (5) connected to the driving motor (3) is arranged at the lower part of the stirring container (2). A buffer spring (6) is arranged between the lower part of the stirring container (2) and the base (1). The stirring module includes a bracket (7) located outside the base (1). A sealing cover body (8) located above the stirring container (2) is arranged on the bracket (7). A stirring assembly is arranged on the sealing cover body (8). A transmission shaft (9) is arranged between the stirring assembly and the stirring seat (5).

2. The boron carbide powder nanopowder preparation device according to claim 1, characterized in that, The stirring seat (5) includes a positioning plate (10) arranged at the bottom of the stirring container (2). A transmission plate (11) is arranged above the positioning plate (10). A buffer column (12) is arranged between the positioning plate (10) and the transmission plate (11). A protective housing (13) is arranged outside the transmission plate (11).

3. The boron carbide powder nanopowder preparation device according to claim 2, characterized in that, A rotating shaft one (14) for installing the eccentric block (4) is arranged in the middle of the positioning plate (10). A rotating shaft two (15) extending above the protective housing (13) is arranged in the middle of the transmission plate (11).

4. The boron carbide powder nanopowder preparation device according to claim 3, characterized in that, A rotating joint (16) connected to the transmission shaft (9) is arranged at the upper part of the rotating shaft two (15).

5. The boron carbide powder nanopowder preparation device according to claim 1, characterized in that, The stirring assembly includes a turntable (17) sleeved on the transmission shaft (9). A sealing cover (18) is arranged at the upper part of the turntable (17). A rotary gear disc (35) is arranged at the connection between the sealing cover (18) and the sealing cover body (8). A stirring shaft (19) that makes a circular motion in the stirring container (2) is arranged on the turntable (17). Stirring arms (20) are arranged on the stirring shaft (19).

6. The boron carbide powder nanopowder preparation device according to claim 5, characterized in that, A revolution driving gear disc (21) is arranged at the upper part of the transmission shaft (9). A transmission gear set (22) located between the revolution driving gear disc (21) and the rotary wheel disc is arranged on the sealing cover (18). A self-rotation driving gear disc (23) is arranged at the lower part of the transmission shaft (9). A driven gear disc (24) meshed with the self-rotation driving gear disc (23) is arranged at the upper part of the stirring shaft (19).

7. The boron carbide powder nano-powder preparation device according to claim 5, characterized in that, A sliding sleeve (25) connected to the stirring shaft (19) is arranged in the middle of the stirring arm (20). A limiting sleeve (26) located at the lower end of the stirring shaft (19) is arranged at the lower part of the sliding sleeve (25). A vertical rod (27) is arranged in the transmission shaft (9). A driving device for driving the vertical rod (27) to move longitudinally is arranged at the upper part of the stirring shaft (19).

8. The boron carbide powder nanopowder preparation device according to claim 7, characterized in that, The driving device includes a driving sleeve (28) located above the stirring shaft (19). A slider (29) is arranged on the inner side wall of the driving sleeve (28). A track groove (30) cooperating with the slider (29) is arranged on the side wall of the vertical rod (27). The slider (29) slides in the track groove (30) to drive the vertical rod (27) to lift in the stirring shaft (19).

9. The preparation device for boron carbide powder nanopowder according to claim 7, characterized in that, A key connection is provided in the middle of the vertical rod (27) with the stirring shaft (19). A sliding key groove (31) is provided on the inner side wall of the stirring shaft (19). A limiting plate (32) is provided below the sliding key groove (31). A return spring (33) sleeved on the vertical rod (27) is provided on the limiting plate (32).

10. The boron carbide powder nano-powder preparation device according to claim 7, characterized in that, A positioning sleeve (34) for installing the stirring shaft (19) is provided on the turntable (17). A buffer cushion block (36) is provided at the connection of the lower part of the positioning sleeve (34) and the sliding sleeve (25).

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