Mixing device for ferro-silicon nitride production

Abstract

The utility model provides a mixing device for ferro-silicon nitride production, which belongs to the field of ferro-silicon nitride processing equipment and comprises a mixing bin, a material lifting component is arranged in the mixing bin and comprises a rotating shaft, an air cavity is arranged in the rotating shaft, and a rotating joint and a high-pressure air nozzle which are communicated with the air cavity are arranged on the rotating shaft. The mixing device is suitable for mixing powdery materials, and the driving piece drives the rotating shaft and the spiral blade to rotate to lift the materials at the bottom of the mixing bin. And meanwhile, the gas conveying pipeline conveys gas into the rotating shaft gas cavity through the rotating joint, and the gas is sprayed out from the high-pressure gas nozzle. And the lifted materials are blown away by gas sprayed out of the high-pressure air nozzle when reaching the object placing plate, so that different materials are uniformly diffused and mixed, and the problem of non-uniform material mixing is solved.

Description

Technical Field

[0001] This utility model relates to the field of silicon nitride processing equipment, specifically to a mixing device for silicon nitride production. Background Technology

[0002] In the production of silicon nitride, the mixing process is crucial, as its effectiveness directly impacts the product quality. Currently, existing mixing devices used in silicon nitride production generally suffer from several problems.

[0003] Traditional mixing devices mostly rely on simple stirring structures to mix materials. This method typically involves placing stirring blades inside a mixing chamber, with a motor driving the blades to rotate and tumble the materials within the chamber to achieve mixing. However, this method has significant shortcomings. In actual production, silicon nitride raw materials often have different particle sizes, densities, and shapes, making it difficult for simple stirring to ensure uniform distribution of various materials. For example, denser materials tend to sink during mixing, while less dense materials tend to float, resulting in uneven mixing and inconsistent final product quality. Utility Model Content

[0004] In view of this, the present invention provides a mixing device for the production of silicon nitride iron. A drive component can rotate a shaft and spiral blades to lift the material at the bottom of the mixing hopper. Simultaneously, a gas supply pipe delivers gas into the gas chamber via a rotary joint, and the gas is ejected from a high-pressure nozzle. When the lifted material reaches the storage plate, it is dispersed by the gas ejected from the high-pressure nozzle, ensuring uniform diffusion and mixing of different materials.

[0005] To solve the above-mentioned technical problems, this utility model provides a mixing device for the production of silicon nitride, including a mixing silo for placing and mixing materials. The mixing silo is equipped with a material lifting component, which includes a rotating shaft disposed in the mixing silo. The rotating shaft is equipped with helical blades mounted on the rotating shaft and located below the high-pressure air nozzle. When the rotating shaft rotates under the drive of the drive component, the helical blades rotate accordingly. A lifting pipe is tightly fitted to the outer side of the helical blades. The helical blades and the lifting pipe work together to lift the materials at the bottom of the mixing silo. A shelf is provided above the lifting pipe. The materials lifted by the helical blades accumulate on the shelf, which is used to store and support the lifted materials.

[0006] The rotating shaft contains an air chamber that connects to a rotary joint and a high-pressure air nozzle. The rotary joint continuously supplies air as the shaft rotates, providing a constant air source for the high-pressure air nozzle. The high-pressure air nozzle then directs the high-pressure airflow to disperse the material on the shelf. The shelf and the high-pressure air nozzle are at the same height, which helps guide the flow of the material, allowing it to be more evenly distributed under the action of the airflow and blades.

[0007] A screen is installed at the bottom of the lifting pipe, and the screen is connected to the bottom of the mixing hopper. The screen can perform preliminary screening of materials to ensure that only qualified particles enter the lifting pipe, preventing large particles from clogging the pipe or damaging the equipment.

[0008] The screen is connected to the lifting pipe, which can also be used to support and fix the lifting pipe.

[0009] An air supply pipeline is provided on one side of the mixing hopper. The air supply pipeline is a stable high-pressure air source that delivers air into the air chamber, so that the high-pressure air nozzle can work continuously.

[0010] The drive unit is installed on the top of the mixing hopper and connected to the rotating shaft. By driving the rotating shaft to rotate, the spiral blades are driven to work, thereby realizing the continuous lifting of materials.

[0011] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0012] 1. Dynamic mixing enhances uniformity. The high-pressure air nozzle and spiral blades work together to lift the material and disperse it at the placement plate, forming a three-dimensional diffusion path. This breaks through the limitations of traditional planar mixing and significantly improves the uniformity of mixing.

[0013] 2. Targeted improvement and optimization of efficiency: The spiral blades work in conjunction with the lifting pipe to force the material at the bottom, avoid material sedimentation, make the raw material circulation more complete, shorten the mixing time, and improve production efficiency.

[0014] 3. Airflow-assisted anti-agglomeration: High-pressure airflow impacts materials, effectively breaking up clumps, reducing interparticle friction, and preventing material agglomeration, especially suitable for sticky or easily agglomerated raw materials.

[0015] 4. Screen filtration to prevent clogging: The screen design at the bottom of the improved pipeline allows materials to pass through while intercepting impurities or large foreign objects, ensuring smooth operation of the spiral blades and reducing the risk of equipment failure.

[0016] 5. Rotary joint ensures continuous air supply: The rotary joint achieves dynamic sealing, ensuring that the air supply system can still deliver air stably when the shaft rotates, avoiding gas leakage and ensuring the continuity of the mixing process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of a mixing device for producing silicon nitride according to the present invention;

[0018] Figure 2 This is a schematic diagram of the lifting pipe structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the air cavity structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the material lifting component structure of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Mixing hopper; 2. Air chamber; 3. Rotary joint; 4. High-pressure air nozzle; 5. Air delivery pipeline; 100. Material lifting assembly; 101. Rotating shaft; 102. Spiral blade; 103. Lifting pipeline; 104. Screen; 105. Shelf; 106. Drive component. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0023] like Figure 1-4 As shown:

[0024] This embodiment provides a mixing device for silicon nitride production, including a mixing silo 1. The mixing silo 1 is mainly used for placing and mixing materials. The bottom of the mixing silo 1 is conical to facilitate material accumulation at the bottom of the mixing silo 1. The mixing silo 1 is equipped with a material lifting assembly 100, which includes a rotating shaft 101. The rotating shaft 101 is installed inside the mixing silo 1 and is connected to the top and bottom of the mixing silo 1 through a bearing seat to ensure its stability and concentricity during rotation. A spiral blade 102 is installed on the rotating shaft 101 and is firmly fixed to the rotating shaft 101 by welding. The rotating shaft 101 is equipped with an air chamber 2. The upper end of the air chamber 2 is connected to a rotary joint 3, which can continuously and stably supply air when the rotating shaft 101 rotates. The lower end of the air chamber 2 is equipped with a high-pressure air nozzle 4, which is used to directionally spray high-pressure airflow.

[0025] The outer surface of the spiral blade 102 is tightly attached to the lifting pipe 103 to ensure smooth material lifting. A storage plate 105 is provided above the lifting pipe 103. The storage plate 105 is fixed to the inner wall of the mixing bin 1 by bolts. The material lifted by the spiral blade 102 accumulates on the storage plate 105. The storage plate 105 is used to store and support the lifted material. The material placed on the storage plate 105 is dispersed by high-pressure gas sprayed from the high-pressure air nozzle 4 to achieve uniform diffusion and mixing of the material.

[0026] A screen 104 is installed at the bottom of the lifting pipe 103. The screen 104 is welded to the bottom of the mixing hopper 1 to ensure a firm connection and good sealing. The screen 104 can perform preliminary screening of materials, effectively preventing large particles from entering the lifting pipe 103 and avoiding blockage or damage to the equipment. At the same time, the screen 104 also serves to support and fix the lifting pipe 103. However, in actual use, it has been found that the screen 104 is easily deformed by the impact of materials.

[0027] The original drive unit 106 is installed on the top of the mixing hopper 1 and connected to the rotating shaft 101. The drive unit 106 is a geared motor of the SEW brand, model DV132M4 / BMG / HF. By driving the rotating shaft 101 to rotate, it drives the spiral blades 102 to work, so as to realize the continuous lifting of materials.

[0028] A gas supply pipe 5 is provided on one side of the mixing silo 1. The gas supply pipe 5 is made of seamless steel pipe and provides a stable high-pressure gas source to the gas chamber 2, so that the high-pressure gas nozzle 4 can work continuously.

[0029] Working principle: The drive component 106 drives the rotating shaft 101 to rotate, and the spiral blades 102 connected to the rotating shaft 101 rotate accordingly. When the spiral blades 102 rotate, they lift the material at the bottom of the mixing bin 1 upward. During the lifting process, the material passes through the lifting pipe 103 that is attached to the outer side of the spiral blades 102. The spiral blades 102 lift the material to the placement plate 105 at the upper end of the lifting pipe 103. The gas supply pipe 5 on one side of the mixing bin 1 delivers gas to the rotary joint 3. The gas enters the air chamber 2 inside the rotating shaft 101 through the rotary joint 3, and is then sprayed out through the high-pressure air nozzle 4, blowing the material lifted up from the placement plate 105 off. Since the high-pressure air nozzle 4 and the placement plate 105 at the upper end of the lifting pipe 103 are at the same plane, the gas sprayed by the high-pressure air nozzle 4 can disperse the material rising from the lifting pipe 103 to the placement plate 105, so that the material forms a more uniform diffusion in the mixing bin 1, thereby achieving more thorough mixing and improving the mixing effect. A screen 104 is installed at the bottom of the pipeline. The holes of the screen 104 are larger than the material particles, which makes it easy for the material scattered at the bottom of the mixing bin 1 to be piled up and lifted by the spiral blades 102.

[0030] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A mixing device for producing silicon nitride iron, comprising a mixing bin (1), characterized in that: The mixing hopper (1) is equipped with a material lifting assembly (100), which includes a rotating shaft (101), an air chamber (2) inside the rotating shaft (101), and a rotary joint (3) and a high-pressure air nozzle (4) connected to the air chamber (2) on the rotating shaft (101).

2. The mixing device for producing silicon nitride iron as described in claim 1, characterized in that: A spiral blade (102) is connected to the rotating shaft (101), and the spiral blade (102) is located below the high-pressure air nozzle (4).

3. The mixing device for producing silicon nitride iron as described in claim 2, characterized in that: The outer side of the spiral blade (102) is fitted with a lifting pipe (103), and the bottom of the lifting pipe (103) is provided with a screen (104), which is connected to the bottom of the mixing bin (1).

4. The mixing device for producing silicon nitride iron as described in claim 3, characterized in that: The upper end of the lifting pipe (103) is provided with a shelf (105), and the high pressure air nozzle (4) and the shelf (105) are at the same height.

5. The mixing device for producing silicon nitride iron as described in claim 4, characterized in that: A gas supply pipe (5) is provided on one side of the mixing silo (1), and the gas supply pipe (5) passes through the mixing silo (1) and is connected to the rotary joint (3).

6. The mixing device for producing silicon nitride iron as described in claim 5, characterized in that: The mixing hopper (1) is provided with a drive unit (106) at the top, which is connected to the rotating shaft (101).

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