Surface pretreatment device for metal silicon
By designing a metal silicon surface pretreatment device including an annular mesh cylinder, aeration plate, nozzle and transfer plate, the problem of insufficient contact between the metal silicon surface and oxygen is solved, the formation of a dense oxide layer and oxygen recovery are achieved, and the pretreatment effect and economy are improved.
Patent Information
- Application Number
- CN202422181880.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-06
AI Technical Summary
During the thermal oxidation treatment of the existing metal silicon surface pretreatment devices, the surface of the metal silicon material cannot be fully in contact with oxygen, resulting in poor density of the oxide layer and poor pretreatment effect. At the same time, the waste of high-purity oxygen increases the cost of the device.
A metal silicon surface pretreatment device including an annular mesh barrel, an aeration plate, a nozzle and a rotary plate is designed. Through the rotation of the annular mesh barrel and the injection of the nozzle, oxygen is ensured to be in full contact with the metal silicon material; at the same time, through the design of the air outlet pipe, air pump and circulation pipe, unconsumed oxygen is recovered and waste is reduced.
The formation of a dense oxide layer on the metal silicon surface is achieved, which improves the pretreatment effect and saves the cost of the device by recovering oxygen.
Smart Images
Figure CN222975264U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal silicon processing devices, and particularly relates to a surface pretreatment device for metal silicon. Background Technique
[0002] The surface pretreatment of metal silicon refers to the removal of grease, oxides and other pollutants on the surface of metal silicon through a series of physical and chemical methods, and at the same time, a necessary oxide layer is formed to improve the adhesion and quality of metal silicides. Common pretreatment methods include thermal oxidation, alumina layer deposition, and oxygen ion implantation on the surface of silicon-based materials, etc.
[0003] However, when the existing surface pretreatment device for metal silicon performs thermal oxidation treatment on the surface of metal silicon, it usually needs to introduce pure oxygen into the device, and then the temperature inside the device needs to be heated to 900 - 1200 degrees Celsius. Since oxygen is introduced into the device, the surface of the metal silicon material accumulated in the device cannot be in full contact with oxygen, resulting in the inability to form a dense oxide layer on the surface of the metal silicon material, and the pretreatment effect of metal silicon is poor; in addition, during the use of the existing metal silicon surface pretreatment device, there will be unconsumed oxygen. Since the oxygen used in the device has a high purity, the cost is high. If the oxygen is directly discharged outside the device, it is easy to cause unnecessary waste of oxygen, resulting in an increase in the use cost of the device. Content of the Utility Model
[0004] The purpose of the utility model is to provide a surface pretreatment device for metal silicon to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A surface pretreatment device for metal silicon, including a housing, the top end of the housing is movably clamped with a top cover, a circular net cylinder is arranged inside the housing, an opening is opened at the bottom of the inner side wall of the circular net cylinder, a discharge tray is arranged on one side of the opening, a aeration plate is fixedly connected to one inner side wall of the housing, a plurality of nozzles are fixedly installed on one side wall of the aeration plate, a rotating plate is fixedly connected to the bottom end of the circular net cylinder, an air inlet pipe penetrates through the middle part of one side wall of the housing, a circulation pipe penetrates through one side wall of the air inlet pipe, an air outlet pipe penetrates through the top of the other side wall of the housing, the bottom end of the housing is fixedly connected with a base, an air pump is fixedly installed on the top end of the base, and an electromagnetic heater is installed inside the housing.
[0006] Preferably, one end of the air outlet pipe is clamped and connected to the input end of the air pump, the end of the circulation pipe far from the air inlet pipe is clamped and connected to the output end of the air pump, and a check valve is installed at the junction of the circulation pipe and the air inlet pipe.
[0007] Preferably, a bottom plate is fixedly connected to the inner wall of the bottom of the annular net cylinder, and two hydraulic cylinders are fixedly installed inside the annular net cylinder.
[0008] Preferably, the output end of the hydraulic cylinder is snap-fitted with the bottom end of the discharge tray, and the discharge tray is movably connected to the annular net cylinder through the hydraulic cylinder.
[0009] Preferably, a gear ring is fixedly sleeved on the bottom of the rotating plate, and an external gear meshes with the outer wall of the gear ring.
[0010] Preferably, a rotating motor is fixedly installed at the bottom of the outer shell, and the output end of the rotating motor is snap-fitted with the external gear.
[0011] Preferably, the annular net cylinder is movably connected to the outer shell through the rotating plate.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] 1. In this surface pretreatment device for metallurgical silicon, through the annular net cylinder, the aeration plate, the nozzle and the rotating plate, the metallurgical silicon materials arranged in an orderly manner in the device can rotate uniformly in the device and can sequentially pass through the nozzle, so that the oxygen ejected from the nozzle can fully contact with the metallurgical silicon materials in the annular net cylinder, which is beneficial to the formation of a dense oxide layer structure on the surface of the metallurgical silicon, thereby improving the pretreatment effect of the device on the surface of the metallurgical silicon.
[0014] 2. In this surface pretreatment device for metallurgical silicon, through the air outlet pipe, the air pump and the circulation pipe, the oxygen that is not completely consumed in the device can enter the circulation pipe from the air outlet pipe, and then enter the air inlet pipe through the circulation pipe and re-enter the device for utilization from the air inlet pipe, thereby avoiding the waste of pure oxygen and saving the use cost of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is the overall structural schematic diagram of the present utility model;
[0016] Figure 2 is the structural schematic diagram of the annular net cylinder and the opening of the present utility model;
[0017] Figure 3 is the structural schematic diagram of the aeration plate and the nozzle of the present utility model;
[0018] Figure 4 is the structural schematic diagram of the air outlet pipe and the circulation pipe of the present utility model.
[0019] In the figure: 1, outer shell; 2, top cover; 3, air outlet pipe; 4, air pump; 5, circulation pipe; 6, air inlet pipe; 7, base; 8, annular net cylinder; 9, aeration plate; 10, nozzle; 11, opening; 12, bottom plate; 13, external gear; 14, rotating motor; 15, gear ring; 16, rotating plate; 17, hydraulic cylinder; 18, discharge tray; 19, electromagnetic heater; 20, check valve. Specific implementation manner
[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0022] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" 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 internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0023] Such as Figures 1 to 4As shown in the figure, the surface pretreatment device for metallurgical silicon in this embodiment includes a housing 1. The top of the housing 1 is movably clamped with a top cover 2. Inside the housing 1, there is an annular mesh cylinder 8. At the bottom of the inner side wall of the annular mesh cylinder 8, there is an opening 11. On one side of the opening 11, there is a discharge tray 18. On one inner side wall of the housing 1, there is a fixed connection with an aeration plate 9. On one side wall of the aeration plate 9, there are fixedly installed a plurality of nozzles 10. At the bottom end of the annular mesh cylinder 8, there is a fixed connection with a rotating plate 16. In the middle of one side wall of the housing 1, there is a through hole for an intake pipe 6. On one side wall of the intake pipe 6, there is a through hole for a circulation pipe 5. At the top of the other side wall of the housing 1, there is a through hole for an exhaust pipe 3. At the bottom end of the housing 1, there is a fixed connection with a base 7. On the top of the base 7, there is a fixedly installed air pump 4. Inside the housing 1, there is an installed electromagnetic heater 19.
[0024] Specifically, there is a through hole at the top of the housing 1 for putting in and taking out metallurgical silicon materials. The top cover 2 is composed of an annular cover and a middle cover, which is more conducive to the feeding and discharging of the device. The top end of the annular mesh cylinder 8 is not closed, so that when the top cover 2 is opened, the metallurgical silicon materials can be directly put into the annular mesh cylinder 8. At the same time, the function of the annular mesh cylinder 8 is to enable the metallurgical silicon materials to be arranged vertically and orderly in the device, so that the silicon materials can be placed vertically, increasing the exposed area of the surface of the metallurgical silicon, thereby facilitating the contact between the surface of the metallurgical silicon and pure oxygen. The number of the openings 11 is six, and the outer wall of the discharge tray 18 can cover the openings 11 in the initial state, so that the metallurgical silicon materials entering the annular mesh cylinder 8 will not slide out from the bottom openings 11, thus facilitating the metallurgical silicon to maintain a better stable state in the annular mesh cylinder 8. The function of the discharge tray 18 is to push the metallurgical silicon materials that have completed the thermal oxidation treatment to the top of the housing 1, so as to facilitate taking out the pretreated metallurgical silicon materials from the device. The function of the aeration plate 9 is to enable the outlets of oxygen to be vertically distributed and parallel to the vertical plane where the annular mesh cylinder 8 is located, thereby facilitating the full contact between oxygen and the metallurgical silicon materials in the annular mesh cylinder 8, so that a dense oxide layer can be formed on the surface of the metallurgical silicon. The function of the nozzles 10 is to disperse the ejected pure oxygen, thereby facilitating the contact between oxygen and metallurgical silicon. The function of the rotating plate 16 is to drive the annular mesh cylinder 8 to rotate uniformly in the housing 1, so that the vertically arranged metallurgical silicon in the annular mesh cylinder 8 can all approach the oxygen source, thereby improving the pretreatment effect of this device. The function of the intake pipe 6 is to introduce relatively high-purity oxygen into the housing 1, so that the metallurgical silicon undergoes an oxidation reaction in a high-temperature and high-oxygen environment. The function of the circulation pipe 5 is to enable the pure oxygen pumped out by the air pump 4 to smoothly enter the intake pipe 6 for recycling. The function of the exhaust pipe 3 is to suck the unreacted oxygen in the device into the circulation pipe 5 for utilization.
[0025] Further, one end of the air outlet pipe 3 is snap-connected to the input end of the air pump 4, and the end of the circulation pipe 5 far from the air inlet pipe 6 is snap-connected to the output end of the air pump 4. A check valve 20 is installed at the junction of the circulation pipe 5 and the air inlet pipe 6. The function of the check valve 20 is to prevent the pure oxygen inside the air inlet pipe 6 from entering the circulation pipe 5, thereby shortening the oxygen flow time.
[0026] Further, a bottom plate 12 is fixedly connected to the inner wall of the bottom of the annular mesh cylinder 8. Two hydraulic cylinders 17 are fixedly installed inside the annular mesh cylinder 8. The function of the bottom plate 12 is to lift the bottom inside the annular mesh cylinder 8, so that oxygen can enter the inside from both the side and the bottom of the annular mesh cylinder 8, which is more conducive to the contact between pure oxygen and metal silicon.
[0027] Further, the output end of the hydraulic cylinder 17 is snap-connected to the bottom end of the discharge tray 18. The discharge tray 18 is movably connected to the annular mesh cylinder 8 through the hydraulic cylinder 17. The discharge tray 18 can move up and down along the annular mesh cylinder 8 under the push of the hydraulic cylinder 17, which is conducive to taking out the pre-treated metal silicon material from the device.
[0028] Further, a gear ring 15 is fixedly sleeved at the bottom of the rotating plate 16. An external gear 13 meshes with the outer wall of the gear ring 15. The gear ring 15 can be meshed and rotated by the external gear 13, realizing the rotation of the gear ring 15 to drive the rotating plate 16 to rotate inside the housing 1, which is conducive to the full contact between the metal silicon material in the annular mesh cylinder 8 and oxygen.
[0029] Further, a rotating motor 14 is fixedly installed at the bottom of the housing 1. The output end of the rotating motor 14 is snap-connected to the external gear 13. After the rotating motor 14 is powered on, it can drive the external gear 13 to rotate, providing power for the rotation of the external gear 13, which is conducive to the uniform rotation of the gear ring 15 and the rotating plate 16 inside the housing 1.
[0030] Further, the annular mesh cylinder 8 is movably connected to the housing 1 through the rotating plate 16, so that the metal silicon material placed in the annular mesh cylinder 8 can be in cyclic contact with the aeration plate 9, which is conducive to the full contact between the metal silicon material and oxygen and improves the pre-treatment effect of the device.
[0031] The usage method of this embodiment is as follows: Before using this surface pretreatment device for metallurgical silicon, it is necessary to first connect the device to an external power supply, and then open the annular cover part of the top cover 2, while the middle cover still covers the top of the annular mesh cylinder 8. Pour metallurgical silicon material into the top end of the annular mesh cylinder 8, so that the metallurgical silicon material enters the inside of the annular mesh cylinder 8 and lands on the bottom plate 12 on the inner side wall of the annular mesh cylinder 8. Then close the top cover 2, and start the electromagnetic heater 19 and the rotating motor 14. At the same time, high-purity oxygen will be introduced into the air inlet pipe 6. At this time, the temperature inside the outer shell 1 rises. Then the rotating motor 14 will drive the outer gear 13 to rotate, so that the outer gear 13 meshes with the gear ring 15 to rotate, driving the rotating plate 16 to rotate at the bottom inside the outer shell 1, so that the annular mesh cylinder 8 at the top end of the rotating plate 16 drives the vertically arranged metallurgical silicon to move towards the aeration plate 9 in turn by rotation. Then the pure oxygen in the air inlet pipe 6 will enter the aeration plate 9 and then be sprayed from the nozzles 10 on the side wall of the aeration plate 9 onto the outer wall of the rotating annular mesh cylinder 8. Then the oxygen will contact the metallurgical silicon on the inner wall of the annular mesh cylinder 8, so that the surface of the metallurgical silicon undergoes thermal oxidation and a dense oxide layer is formed. After the pretreatment is completed, the hydraulic cylinder 17 can be started and controlled to descend, so that the discharge tray 18 descends to the bottom of the opening 11. Then the metallurgical silicon in the annular mesh cylinder 8 will slide down from the opening 11 onto the discharge tray 18. Then the top cover 2 can be opened again, and then the hydraulic cylinder 17 is controlled to rise, so that the discharge tray 18 slides up along the inner wall of the annular mesh cylinder 8 to the top end of the outer shell 1. Finally, the pretreated metallurgical silicon can be taken out from the top of the outer shell 1.
[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A surface pretreatment device for metallic silicon, comprising a housing (1), characterized in that: The top of the shell (1) is movably engaged with a top cover (2), an annular mesh cylinder (8) is provided inside the shell (1), an opening (11) is provided at the bottom of the inner wall of the annular mesh cylinder (8), a discharge tray (18) is provided on one side of the opening (11), an aeration plate (9) is fixedly connected to the inner wall of one side of the shell (1), a plurality of nozzles (10) are fixedly installed on one side wall of the aeration plate (9), a rotating plate (16) is fixedly connected to the bottom end of the annular mesh cylinder (8), an air inlet pipe (6) is passed through the middle of one side wall of the shell (1), a circulation pipe (5) is passed through one side wall of the air inlet pipe (6), an air outlet pipe (3) is passed through the top of the other side wall of the shell (1), a base (7) is fixedly connected to the bottom end of the shell (1), an air pump (4) is fixedly installed on the top of the base (7), and an electromagnetic heater (19) is installed inside the shell (1).
2. The surface pretreatment device of metal silicon according to claim 1, characterized in that: One end of the outlet pipe (3) is snap-connected with the input end of the air pump (4), and one end of the circulation pipe (5) away from the intake pipe (6) is snap-connected with the output end of the air pump (4). A check valve (20) is installed at the junction of the circulation pipe (5) and the intake pipe (6).
3. The surface pretreatment device for metallic silicon according to claim 1, characterized in that: The inner wall at the bottom of the annular net cylinder (8) is fixedly connected to a bottom plate (12), and two hydraulic cylinders (17) are fixedly installed inside the annular net cylinder (8).
4. The surface pretreatment device for metallic silicon according to claim 3, characterized in that: The output end of the hydraulic cylinder (17) is snap-connected with the bottom end of the discharge tray (18), and the discharge tray (18) is movably connected with the annular net cylinder (8) via the hydraulic cylinder (17).
5. The surface pretreatment device for metallic silicon according to claim 1, characterized in that: A gear ring (15) is fixedly sleeved at the bottom of the rotating plate (16), and an external gear (13) is meshed on the outer wall of the gear ring (15).
6. The surface pretreatment device for metallic silicon according to claim 5, characterized in that: A rotating motor (14) is fixedly mounted on the bottom of the housing (1), and an output end of the rotating motor (14) is snap-connected to the external gear (13).
7. The surface pretreatment device for metallic silicon according to claim 1, characterized in that: The annular net cylinder (8) is movably connected to the outer shell (1) via a rotating plate (16).