Mixing device for preparing erosion-resistant silicon nitride combined with silicon carbide for aluminum electrolysis cell
By designing a combined structure of cam, slide plate, pull rope and rotating shaft, the problem of raw material residue in the mixing device was solved, and the raw material was completely discharged, ensuring the preparation quality of silicon nitride-bonded silicon carbide materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIAOZUO BEIXING REFRACTORY MATERIAL
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-05
AI Technical Summary
When preparing silicon nitride-bonded silicon carbide materials in a mixing device, some raw materials remain on the inner wall of the mixing chamber after mixing, resulting in uneven mixing in the next batch.
A mixing device for preparing corrosion-resistant silicon nitride combined with silicon carbide in aluminum electrolysis cells was designed. Through a combination structure of cam, slide plate, pull rope and rotating shaft, the inner wall of the mixing chamber is cleaned by vibration, ensuring that the raw materials are completely discharged.
Effective cleaning of residual raw materials and prevention of them from mixing with new mixtures improves the preparation quality of silicon nitride-bonded silicon carbide materials.
Smart Images
Figure CN224194600U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mixing device technology, and in particular to a mixing device for preparing corrosion-resistant silicon nitride combined with silicon carbide for aluminum electrolysis cells. Background Technology
[0002] With the continuous development of society and the advancement of science and technology, the technology related to mixing devices is also constantly improving. The silicon nitride-bonded silicon carbide material prepared by the mixing device has the characteristics of high strength, high thermal conductivity, excellent corrosion resistance, and oxidation resistance. These characteristics make it an ideal choice for the sidewall material of aluminum electrolytic cells, which can meet the working requirements of aluminum electrolytic cells in high temperature and highly corrosive environments, and is conducive to the formation of protective furnace walls of the sidewall material, thereby improving the service life of aluminum electrolytic cells.
[0003] Currently, when preparing silicon nitride-bonded silicon carbide materials using mixing devices, most of the mixed materials are discharged from the discharge pipe after mixing. However, some materials remain on the inner wall of the mixing chamber. These residual materials are prone to mixing with the materials to be mixed next time, which is not conducive to the preparation of silicon nitride-bonded silicon carbide materials. Utility Model Content
[0004] The purpose of this invention is to address the following shortcomings in the existing technology: When preparing silicon nitride-bonded silicon carbide materials using a mixing device, most of the mixed materials are discharged from the discharge pipe after mixing, but some materials remain on the inner wall of the mixing chamber. These residual mixed materials are easily mixed with the materials to be mixed next time, which is not conducive to the preparation of silicon nitride-bonded silicon carbide materials. The proposed invention is a mixing device for preparing corrosion-resistant silicon nitride-bonded silicon carbide materials for aluminum electrolytic cells.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A mixing device for preparing corrosion-resistant silicon nitride combined with silicon carbide for aluminum electrolysis cells includes a shell, a mixing chamber is provided inside the shell, a plurality of feed cylinders and a discharge pipe are fixedly arranged on the upper and lower surfaces of the shell respectively, each feed cylinder and discharge pipe is provided with a solenoid valve, and a stirring assembly is provided inside the shell.
[0007] The outer surface of the housing is fixedly connected to a plurality of concave frames arranged in a circular array. Each concave frame is rotatably connected to a rotating shaft, and each rotating shaft is fixedly connected to a plurality of striking blocks. The plurality of rotating shafts are connected by a pull rope. The lower surface of the housing is fixedly connected to a mounting plate, and a first motor is fixedly connected to the mounting plate. The drive end of the first motor is fixedly connected to a fixed shaft, and a cam is fixedly installed on the fixed shaft. A sliding assembly is provided on the housing. The sliding assembly includes a sliding plate slidably installed on the bottom of the housing. An L-shaped block is fixedly connected to one side of the sliding plate, and the pull rope is fixedly connected to the L-shaped block.
[0008] Preferably, the bottom of the housing has a sliding opening, an I-shaped block is slidably connected in the sliding opening, a first spring is fixedly connected to the I-shaped block, and the first spring is fixedly connected to the inner wall of the sliding opening.
[0009] Preferably, each of the rotating shafts is fitted with a torsion spring, one end of which is fixedly connected to the rotating shaft, and the other end of which is fixedly connected to the concave frame.
[0010] Preferably, a second motor is fixedly connected to the housing, and a drive shaft is fixedly connected to the drive end of the second motor. The stirring assembly includes a plurality of stirring rods fixedly mounted on the drive shaft, and each stirring rod is inclined.
[0011] Preferably, the fixed shaft and the discharge pipe are rotatably connected, and a plurality of stirring blades are fixedly connected to the fixed shaft, with all the stirring blades disposed inside the discharge pipe.
[0012] Preferably, the discharge pipe has a through hole for connecting the fixed shaft, and a sealing ring is fixedly connected to the inner wall of the through hole.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] During the rotation of the cam, it will repeatedly squeeze and detach from the slide plate. After being squeezed, the slide plate will move along the slide opening. As the L-shaped block moves with the slide plate, it will pull the pull rope. Under the transmission action of the pull rope, each rotating shaft will rotate relative to the corresponding concave frame at the same time. The torsion spring will deform. After each striking block rotates, one end of its arc surface will hit the shell. Multiple striking blocks hit the shell multiple times, and the inner wall of the mixing chamber will vibrate. This will help the residual mixed raw materials on the inner wall of the mixing chamber to fall off, which is conducive to the complete discharge of the mixed raw materials and prevents the residual mixed raw materials from mixing with the raw materials to be mixed next time. This is beneficial to the preparation of silicon nitride bonded silicon carbide materials. Attached Figure Description
[0015] Figure 1This is a front structural schematic diagram of the mixing device for preparing corrosion-resistant silicon nitride-bonded silicon carbide for aluminum electrolysis cells proposed in this utility model.
[0016] Figure 2 This is a top view of the mixing device for preparing corrosion-resistant silicon nitride and silicon carbide for aluminum electrolysis cells proposed in this utility model.
[0017] Figure 3 This is a side view of the mixing device for preparing corrosion-resistant silicon nitride-bonded silicon carbide for aluminum electrolysis cells proposed in this utility model.
[0018] Figure 4 This is a bottom view of the mixing device for preparing corrosion-resistant silicon nitride-bonded silicon carbide for aluminum electrolysis cells proposed in this utility model.
[0019] Figure 5 This is a partial internal structural diagram of the mixing device for preparing corrosion-resistant silicon nitride combined with silicon carbide for aluminum electrolysis cells proposed in this utility model.
[0020] In the diagram: 1. Shell, 2. Feed cylinder, 3. Torsion spring, 4. Stirring rod, 5. Rotary shaft, 6. Pull rope, 7. Striking block, 8. Concave frame, 9. Slide plate, 10. Cam, 11. First spring, 12. Mounting plate, 13. L-shaped block, 14. Stirring blade, 15. Discharge pipe, 16. Drive shaft, 17. I-shaped block, 18. Fixed shaft, 19. Mixing chamber. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.
[0023] Reference Figures 1-5A mixing device for preparing corrosion-resistant silicon nitride combined with silicon carbide in an aluminum electrolysis cell includes a housing 1. A mixing chamber 19 is formed inside the housing 1. The thickness between the inner wall of the mixing chamber 19 and the outer surface of the housing 1 is four millimeters. The housing 1 is made of stainless steel. Multiple feed cylinders 2 and discharge pipes 15 are fixedly mounted on the upper and lower surfaces of the housing 1, respectively. Each feed cylinder 2 and discharge pipe 15 is equipped with a solenoid valve. A stirring assembly is installed inside the housing 1. Multiple concave frames 8 arranged in a circular array are fixedly connected to the outer surface of the housing 1. Each concave frame 8 is rotatably connected to a rotating shaft 5, and multiple striking blocks 7 are fixedly connected to each rotating shaft 5. The striking blocks can be placed at the lower part of the housing 1. The mixing chamber 19 is provided with separate annular openings and multiple striking blocks 7 of different lengths are fixedly installed on the rotating shaft 5 so that the striking blocks 7 can strike the funnel-shaped outer wall of the mixing chamber 19. The multiple rotating shafts 5 are connected by pull ropes 6. The lower surface of the housing 1 is fixedly connected to the mounting plate 12. The mounting plate 12 is fixedly connected to the first motor. The drive end of the first motor is fixedly connected to the fixed shaft 18. The fixed shaft 18 is fixedly installed with a cam 10. The housing 1 is provided with a sliding assembly, which includes a slide plate 9 that is slidably installed at the bottom of the housing 1. An L-shaped block 13 is fixedly connected to one side of the slide plate 9. The pull rope 6 and the L-shaped block 13 are fixedly connected. The pull rope 6 has good wear resistance.
[0024] The bottom of the housing 1 has a sliding opening, and an I-shaped block 17 is slidably connected inside the sliding opening. A first spring 11 is fixedly connected to the I-shaped block 17. The first spring 11 is fixedly connected to the inner wall of the sliding opening. When the slide plate 9 is squeezed by the cam 10, it will move along the sliding opening. At the same time, the I-shaped block 17 moves inside the sliding opening, and the first spring 11 deforms. The I-shaped block 17 can limit the movement trajectory of the slide plate 9. Each rotating shaft 5 is fitted with a torsion spring 3. One end of the torsion spring 3 is fixedly connected to the rotating shaft 5, and the other end of the torsion spring 3 is fixedly connected to the concave frame 8. When the L-shaped block 13 moves together with the slide plate 9, it will pull the pull rope 6. Under the transmission action of the pull rope 6, each rotating shaft 5 will rotate relative to the corresponding concave frame 8 at the same time, and the torsion spring 3 will deform.
[0025] A second motor is fixedly connected to the housing 1, and a drive shaft 16 is fixedly connected to the drive end of the second motor. The stirring assembly includes multiple stirring rods 4 fixedly mounted on the drive shaft 16. The surface of the stirring rods 4 is relatively smooth, and each stirring rod 4 is inclined. The second motor drives the drive shaft 16 to rotate, and the multiple stirring rods 4 of different lengths and inclined arrangement rotate synchronously at high speed, which can stir and mix the various raw materials in the mixing chamber 19. The fixed shaft 18 is rotatably connected to the discharge pipe 15. Multiple stirring blades 14 are fixedly connected to the fixed shaft 18. The surface of the stirring blades 14 is relatively smooth, and the multiple stirring blades 14 are all arranged inside the discharge pipe 15. During the rotation of the fixed shaft 18, the multiple stirring blades 14 can be driven to rotate together. During the low-speed rotation of the stirring blades 14, the mixed raw materials flowing through the discharge pipe 15 can be mixed a second time to facilitate more thorough mixing of the raw materials.
[0026] The discharge pipe 15 has a through hole for connecting the fixed shaft 18. A sealing ring is fixedly connected to the inner wall of the through hole. The sealing ring is sleeved on the outside of the fixed shaft 18, which can effectively improve the sealing performance at the connection between the fixed shaft 18 and the discharge pipe 15. The surface of the sealing ring in contact with the fixed shaft 18 is relatively smooth.
[0027] In this invention, various raw materials are first fed into the feed cylinders 2. Then, the solenoid valves on each feed cylinder 2 are opened, and the appropriate amount of raw materials inside each feed cylinder 2 falls into the mixing chamber 19. At the same time, the second motor drives the drive shaft 16 to rotate, and multiple stirring rods 4 of different lengths and inclined arrangement rotate synchronously at high speed, which can mix the various raw materials. After the mixing is completed, the solenoid valve on the discharge pipe 15 is opened, and the first motor drives the fixed shaft 18 to rotate. The mixed raw materials can then fall through the discharge pipe 15 and into the collection frame (not shown) at the bottom. During the rotation of the fixed shaft 18, the cam 10 and multiple stirring blades 14 can be driven to rotate together. During the rotation of the stirring blades 14, the mixed raw materials flowing through the discharge pipe 15 can be mixed a second time to ensure more thorough mixing of the raw materials.
[0028] During the rotation of cam 10, it will repeatedly squeeze and detach from slide plate 9. In the initial state, none of the striking blocks 7 are in contact with the outer wall of housing 1. After slide plate 9 is squeezed, it will move along the slide opening. I-shaped block 17 moves in the slide opening at the same time. The first spring 11 deforms. Since the inelastic pull rope 6 is wrapped around multiple rotating shafts 5 and cannot be completely detached from any rotating shaft 5, one end of the inelastic pull rope 6 is fixedly connected to L-shaped block 13. During the movement of L-shaped block 13 along with slide plate 9, it will pull pull rope 6. Under the transmission action of pull rope 6, each rotating shaft 5 will rotate relative to the corresponding concave frame 8 at the same time. Torsion spring 3 deforms. After each striking block 7 rotates, one end of its arc surface will hit housing 1. The inner wall of mixing chamber 19 vibrates, so that the mixed raw materials remaining on the inner wall of mixing chamber 19 fall off. This is conducive to the complete discharge of mixed raw materials and prevents the residual mixed raw materials from mixing with the raw materials to be mixed next time. This is beneficial to the preparation of silicon nitride bonded silicon carbide materials.
[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly. For example, they can refer to fixed connection, detachable connection, or integral connection; they can refer to mechanical connection or electrical connection; they can refer to direct connection or indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An aluminum electrolytic cell preparation mixing device using corrosion-resistant silicon nitride combined with silicon carbide, comprising a shell (1), characterized in that, The housing (1) has a mixing chamber (19) inside. Multiple feed cylinders (2) and discharge pipes (15) are fixedly installed on the upper and lower surfaces of the housing (1). Each feed cylinder (2) and discharge pipe (15) is equipped with a solenoid valve. A stirring assembly is installed inside the housing (1). The outer surface of the housing (1) is fixedly connected to a plurality of concave frames (8) arranged in a circular array. Each concave frame (8) is rotatably connected to a rotating shaft (5). Each rotating shaft (5) is fixedly connected to a plurality of striking blocks (7). The plurality of rotating shafts (5) are connected by a pull rope (6). The lower surface of the housing (1) is fixedly connected to a mounting plate (12). A first motor is fixedly connected to the mounting plate (12). A fixed shaft (18) is fixedly connected to the drive end of the first motor. A cam (10) is fixedly provided on the fixed shaft (18). A sliding assembly is provided on the housing (1). The sliding assembly includes a sliding plate (9) slidably installed at the bottom of the housing (1). An L-shaped block (13) is fixedly connected to one side of the sliding plate (9). The pull rope (6) and the L-shaped block (13) are fixedly connected.
2. The apparatus for preparing and mixing erosion-resistant silicon nitride-bonded silicon carbide materials for aluminum electrolytic cells according to claim 1, characterized in that, The bottom of the housing (1) is provided with a sliding opening, and an I-shaped block (17) is slidably connected in the sliding opening. A first spring (11) is fixedly connected to the I-shaped block (17), and the first spring (11) is fixedly connected to the inner wall of the sliding opening.
3. The apparatus for preparing and mixing erosion-resistant silicon nitride-bonded silicon carbide materials for aluminum electrolytic cells according to claim 1, characterized in that, Each of the rotating shafts (5) is fitted with a torsion spring (3), one end of the torsion spring (3) is fixedly connected to the rotating shaft (5), and the other end of the torsion spring (3) is fixedly connected to the concave frame (8).
4. The apparatus for preparing and mixing corrosion-resistant silicon nitride-bonded silicon carbide materials for aluminum electrolytic cells according to claim 1, characterized in that, A second motor is fixedly connected to the housing (1), and a drive shaft (16) is fixedly connected to the drive end of the second motor. The stirring assembly includes a plurality of stirring rods (4) fixedly installed on the drive shaft (16), and each stirring rod (4) is inclined.
5. The apparatus for preparing and mixing erosion-resistant silicon nitride-bonded silicon carbide materials for aluminum electrolytic cells according to claim 1, characterized in that, The fixed shaft (18) and the discharge pipe (15) are rotatably connected. Multiple stirring blades (14) are fixedly connected on the fixed shaft (18), and the multiple stirring blades (14) are all arranged inside the discharge pipe (15).
6. The apparatus for preparing erosion-resistant silicon nitride-bonded silicon carbide mixing materials for aluminum electrolytic cells according to claim 1, characterized in that, The discharge pipe (15) has a through hole for connecting the fixed shaft (18), and a sealing ring is fixedly connected to the inner wall of the through hole.