Micro-powder mixing device for processing silicon carbide products
By combining the stirring blade rotation and intermittent air flow of the intermittent air flow of the interlaced nozzles in the silicon carbide mixing device, the problem of poor powder agglomeration is solved, and more efficient powder dispersion and mixing is achieved, ensuring the pressure stability in the mixing silo. Improve the quality of silicon carbide products.
Patent Information
- Application Number
- CN202421118702.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The existing silicon carbide mixing devices have poor agglomeration properties during powder mixing, resulting in poor mixing effect and making it difficult to achieve sufficient powder dispersion.
Using a micro powder mixing device including rotating agitating blades and interlaced nozzles, the agglomerated powder is broken and cut through the combination of rotation of the agitating blades and intermittent air flow, thereby improving the dispersion of the powder, and maintaining the pressure in the mixing chamber through elastic parts. Stability ensures sealing and safety.
It significantly improves the mixing uniformity and stirring efficiency of the powder, ensures the pressure stability in the mixing silo, avoids safety hazards, and improves the quality of silicon carbide products.
Smart Images
Figure CN222305430U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of silicon carbide processing, and in particular to a micro powder mixing device for processing silicon carbide products. Background Art
[0002] Silicon carbide is an important inorganic non-metallic material with excellent properties such as high hardness, high melting point, high temperature resistance and corrosion resistance. It is widely used in the industrial field. The industrial production process of silicon carbide mainly includes raw material preparation, mixing, molding, sintering and surface treatment. Raw material mixing is a key step in the industrial production process of silicon carbide. By mixing silicon dioxide and graphite powder in a certain proportion, silicon carbide materials with appropriate hardness and conductivity can be obtained.
[0003] The existing mixing device achieves mixing and stirring of powder by rotating blades installed on a stirring shaft. The stirring and mixing form is relatively simple, and the dispersion of agglomerated powder is poor, resulting in an insufficient mixing effect. Utility Model Content
[0004] In order to improve the mixing effect, the present application provides a micro powder mixing device for processing silicon carbide products.
[0005] The present application provides a micro powder mixing device for processing silicon carbide products using the following technical solution:
[0006] A micro powder mixing device for processing silicon carbide products, comprising:
[0007] Mixing silo;
[0008] The stirring assembly comprises a rotating shaft rotatably arranged on the mixing bin, a stirring blade fixedly arranged on the rotating shaft, and a motor for driving the rotating shaft to rotate; the output end of the motor is connected to the rotating shaft;
[0009] The blowing mechanism includes air pipes fixedly arranged on both sides of the mixing bin, nozzles evenly distributed on the air pipes, a pressure relief component for maintaining a stable pressure in the mixing bin, and an air source component for supplying air to the air pipes; the nozzles on both sides are arranged in an alternating manner.
[0010] By adopting the above technical solution, the mixing blades are driven to rotate by the rotating shaft to initially mix the powder. At the same time, the gas tank provides intermittent airflow to the air pipe through the pulse valve, and the airflow is sprayed into the mixing bin through the nozzle to form a dynamic airflow environment. The staggered nozzles can break and cut the agglomerated powder, thereby improving the dispersion of the powder.
[0011] Optionally, two stirring blades are provided, and the two stirring blades are spiral-shaped and have opposite rotation directions.
[0012] By adopting the above technical solution, the complexity and efficiency of stirring can be increased, so that the powder can be mixed more fully during the stirring process.
[0013] Optionally, the pressure relief assembly includes a pressure relief pipe fixedly arranged on the mixing bin, a pressure relief ball slidably arranged on the pressure relief pipe, a sealing ring fixedly arranged on the pressure relief pipe, and an elastic member for pushing the pressure relief ball against the sealing ring; there is a gap between the pressure relief ball and the pressure relief pipe, and when the pressure relief ball and the sealing ring are separated, the mixing bin is connected to the outside world.
[0014] By adopting the above technical solution, the elastic member can push the pressure relief ball to be close to the sealing ring to ensure the sealing of the mixing bin. When the pressure in the mixing bin increases, the pressure relief ball will automatically move away from the sealing ring to relieve pressure, thereby maintaining the stability of the pressure in the mixing bin and improving safety.
[0015] Optionally, the elastic member is a spring, and two ends of the spring are respectively fixed to the pressure relief pipe and the pressure relief ball.
[0016] By adopting the above technical solution, the elastic force provided by the spring can press the pressure relief ball tightly against the sealing ring. When pressure relief is required, the spring can contract to ensure airflow out.
[0017] Optionally, one end of the pressure relief pipe located in the mixing bin is threadedly connected with a collar, and a filter is provided between the collar and the pressure relief pipe.
[0018] By adopting the above technical solution, the filter screen can effectively prevent material powder from entering the pressure relief pipe and causing blockage, and the threaded connection method of the collar also facilitates regular replacement of the filter screen.
[0019] Optionally, the gas source assembly includes a gas tank fixedly mounted on the mixing bin and a pulse valve connected to the gas tank; the gas pipe is connected to the pulse valve.
[0020] By adopting the above technical solution, the pulse valve is controlled by an electrical signal. When receiving an opening signal, the pulse valve opens quickly, allowing the gas in the gas tank to be quickly sprayed into the mixing bin through the air pipe. When receiving a closing signal, the pulse valve closes immediately to cut off the gas supply. In this way, the timing and intensity of the airflow injection can be accurately controlled to meet the needs of different mixing stages.
[0021] Optionally, the inner wall of the mixing bin is provided with a flow channel along the direction of air flow ejected from the nozzle.
[0022] By adopting the above technical solution, the flow channel plays a guiding role on the airflow, which can further enhance the mixing effect on the material powder and improve the uniformity of the mixing.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. The mixing blades are driven to rotate by the rotating shaft to initially mix the powder. At the same time, the gas tank provides intermittent airflow to the air pipe through the pulse valve, and the airflow is sprayed into the mixing bin through the nozzle to form a dynamic airflow environment. The staggered nozzles can break and cut the agglomerated powder, thereby improving the dispersion of the powder.
[0025] 2. The elastic part can push the pressure relief ball to fit tightly against the sealing ring to ensure the tightness of the mixing bin. When the pressure in the mixing bin increases, the pressure relief ball will automatically move away from the sealing ring to relieve the pressure, thereby maintaining the stability of the pressure in the mixing bin and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.
[0027] Figure 2 This is a top view of the embodiment of the present application in which the upper storage body is hidden.
[0028] Figure 3 It is a cross-sectional view of an embodiment of the present application.
[0029] Figure 4 yes Figure 3 A partial enlarged schematic diagram of part A.
[0030] Figure numerals: 1, mixing bin; 11, flow channel; 21, rotating shaft; 22, stirring blade; 23, motor; 31, air pipe; 32, nozzle; 41, pressure relief pipe; 42, pressure relief ball; 43, sealing ring; 44, spring; 45, collar; 46, filter; 51, gas tank; 52, pulse valve. DETAILED DESCRIPTION
[0031] The technical solution in this application is further described in detail below in conjunction with the accompanying drawings.
[0032] The present application discloses a micro powder mixing device for processing silicon carbide products. Figure 1 A micro powder mixing device for processing silicon carbide products comprises a mixing bin 1, a stirring assembly and a blowing mechanism arranged on the mixing bin 1. It should be understood that the mixing bin 1 comprises an upper bin body and a lower bin body, the upper bin body and the lower bin body are fixedly connected by bolts, a feed port is arranged on the upper bin body, and a discharge port is arranged on the lower bin body.
[0033] Please refer to Figure 2The stirring assembly is used to stir the powder, and the stirring assembly includes a rotating shaft 21 rotatably arranged on the mixing bin 1, a stirring blade 22 fixedly arranged on the rotating shaft 21, and a motor 23 for driving the rotating shaft 21 to rotate. The output end of the motor 23 is connected to the rotating shaft 21, and the rotating shaft 21 drives the stirring blade 22 to rotate in the mixing bin 1 through the drive of the motor 23, so as to stir the powder.
[0034] For details, please refer to Figure 2 and Figure 3 There are two stirring blades 22, and the two stirring blades 22 are spiral and rotate in opposite directions, which can increase the complexity and efficiency of stirring, so that the powder can be mixed more fully during the stirring process. When the motor 23 is started, the two stirring blades 22 rotate at the same time, but because they rotate in opposite directions, a complex flow pattern can be formed in the mixing bin 1, thereby improving the stirring and mixing effect.
[0035] Please refer to Figure 2 and Figure 3 The blowing mechanism includes air pipes 31 fixedly arranged on both sides of the mixing bin 1, nozzles 32 evenly distributed on the air pipes 31, a pressure relief component for maintaining a stable pressure in the mixing bin 1, and an air source component for supplying air to the air pipes 31. The nozzles 32 respectively arranged on both sides are arranged in a staggered manner, so as to ensure that the airflow sprayed by the nozzles 32 can cover every corner of the mixing bin 1, and the airflow sprayed by the nozzles 32 on both sides can form a cutting and collision effect, which is more conducive to breaking up the agglomerated powder.
[0036] For details, please refer to Figure 4 , the pressure relief assembly includes a pressure relief pipe 41 fixedly arranged on the mixing bin 1, a pressure relief ball 42 slidably arranged on the pressure relief pipe 41, a sealing ring 43 fixedly arranged on the pressure relief pipe 41, and an elastic member for pushing the pressure relief ball 42 against the sealing ring 43. In this embodiment, the elastic member is a spring 44, one end of the spring is fixed to the pressure relief pipe 41, and the other end of the spring 44 is fixed to the pressure relief ball 42. Under normal working conditions, the spring 44 pushes the pressure relief ball 42 to be tightly attached to the sealing ring 43, thereby ensuring the sealing of the mixing bin 1. When the pressure in the mixing bin 1 increases, the pressure relief ball 42 will overcome the elastic force of the spring 44 under the action of the pressure and move in a direction away from the sealing ring 43, so that the mixing bin 1 is connected to the outside world, thereby reducing the pressure in the mixing bin 1, so as to ensure that the mixing bin 1 always maintains a stable pressure environment during the mixing process, and avoid safety accidents caused by excessive pressure.
[0037] For further information, please refer to Figure 4A collar 45 is threadedly connected to one end of the pressure relief pipe 41 located in the mixing bin 1, and a filter screen 46 is sandwiched between the collar 45 and the pressure relief pipe 41. The aperture of the filter screen 46 is smaller than the particle size of the powder, so it can effectively prevent the powder from entering the pressure relief pipe 41 and causing blockage, thereby ensuring that the pressure relief component always maintains a good working condition during long-term use and avoids affecting its normal pressure relief function due to blockage. At the same time, the threaded connection method of the collar 45 also facilitates the regular replacement of the filter screen 46, thereby further extending the service life of the pressure relief component.
[0038] Please refer to Figure 2 and Figure 3 The gas source assembly includes a gas tank 51 fixedly mounted on the mixing bin 1 and a pulse valve 52 fixedly connected to the gas tank 51, wherein the air pipe 31 is fixedly connected to the pulse valve 52. The gas tank 51 has sufficient capacity to store the required gas, such as compressed air. The pulse valve 52 can be opened and closed according to a preset frequency and duration, thereby controlling the intermittent injection of the airflow. This control method allows the airflow to form a pulse-like impact in the mixing bin 1, effectively improving the mixing effect of the material powder. Through the control of the pulse valve 52, intermittent injection of the airflow can be achieved. This injection method can form a dynamic airflow environment in the mixing bin 1, which helps to further break the agglomeration state of the material powder and improve its mixing effect.
[0039] In addition, please refer to Figure 2 and Figure 3 A flow channel 11 is also provided on the inner wall of the mixing bin 1 along the direction of the airflow ejected from the nozzle 32. The flow channel 11 can guide the airflow to flow along a specific path, thereby ensuring that the airflow ejected from the nozzle 32 can evenly act on various areas in the mixing bin 1.
[0040] The implementation principle of the embodiment of the present application is as follows: first, add the powder into the mixing bin 1, then start the motor 23, drive the stirring blade 22 to rotate through the rotating shaft 21, and preliminarily stir the powder. At the same time, the gas tank 51 provides intermittent airflow to the air pipe 31 through the pulse valve 52, and the airflow is sprayed into the mixing bin 1 through the nozzle 32 to form a dynamic airflow environment. Under the joint action of the stirring blade 22 and the nozzle 32, the powder is fully mixed. In this process, the pressure relief ball 42 is pushed to be close to the sealing ring 43 by the spring 44 to ensure the sealing of the mixing bin 1. When the pressure in the mixing bin 1 increases, the pressure relief ball 42 will automatically move away from the sealing ring 43 to relieve pressure, thereby maintaining the stability of the pressure in the mixing bin 1.
[0041] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A micro powder mixing device for processing silicon carbide products, characterized in that: include: Mixing silo (1); The stirring assembly comprises a rotating shaft (21) rotatably arranged on the mixing bin (1), a stirring blade (22) fixedly arranged on the rotating shaft (21), and a motor (23) for driving the rotating shaft (21) to rotate; the output end of the motor (23) is connected to the rotating shaft (21); The blowing mechanism comprises air pipes (31) fixedly arranged on both sides of the mixing bin (1), nozzles (32) evenly distributed on the air pipes (31), a pressure relief component for maintaining a stable pressure in the mixing bin (1), and an air source component for supplying air to the air pipes (31); the nozzles (32) on both sides are arranged in a staggered manner.
2. A micro powder mixing device for processing silicon carbide products according to claim 1, characterized in that: Two stirring blades (22) are provided, and the two stirring blades (22) are spiral-shaped and have opposite rotation directions.
3. The micro powder mixing device for processing silicon carbide products according to claim 1, characterized in that: The pressure relief assembly comprises a pressure relief pipe (41) fixedly arranged on the mixing bin (1), a pressure relief ball (42) slidably arranged on the pressure relief pipe (41), a sealing ring (43) fixedly arranged on the pressure relief pipe (41), and an elastic member used to push the pressure relief ball (42) against the sealing ring (43); there is a gap between the pressure relief ball (42) and the pressure relief pipe (41), and when the pressure relief ball (42) and the sealing ring (43) are separated, the mixing bin (1) is connected to the outside.
4. A micro powder mixing device for processing silicon carbide products according to claim 3, characterized in that: The elastic member is a spring (44), and two ends of the spring (44) are respectively fixed to the pressure relief pipe (41) and the pressure relief ball (42).
5. The micro powder mixing device for processing silicon carbide products according to claim 3, characterized in that: One end of the pressure relief pipe (41) located in the mixing bin (1) is threadedly connected to a collar (45), and a filter screen (46) is provided between the collar (45) and the pressure relief pipe (41).
6. The micro powder mixing device for processing silicon carbide products according to claim 1, characterized in that: The gas source assembly comprises a gas tank (51) fixedly arranged on the mixing bin (1) and a pulse valve (52) in communication with the gas tank (51); the gas pipe (31) is in communication with the pulse valve (52).
7. The micro powder mixing device for processing silicon carbide products according to claim 1, characterized in that: The inner wall of the mixing bin (1) is provided with a flow channel (11) along the direction of the airflow ejected from the nozzle (32).