Reduction furnace for monomer boron production

Abstract

The utility model discloses a reduction furnace for monomer boron production, which belongs to the technical field of monomer boron production, and comprises a furnace body, a stirring mechanism is arranged at the top of the furnace body, a through groove is formed in the outer side of the furnace body, two screw rods are rotatably connected to an inner cavity of the furnace body, an inner baffle is sleeved between the two screw rods in a threaded manner, and the inner baffle is connected with an outer baffle in a threaded manner. The end face of the inner baffle is fixedly connected with a movable base. According to the boron melting furnace, the lead screw, the first motor, the inner baffle, the moving seat and the outer baffle are used in cooperation, the moving seat extends out of the inner cavity of the furnace body through cooperation between the lead screw and the inner baffle, and therefore monomer boron generated after reaction in the reaction box on the moving seat is taken out, and at the moment, the side face of the moving seat and the inner wall of the penetrating groove are attached and sealed; and the outer side face of the inner baffle and the inner wall of the furnace body are attached and sealed, hot air in the furnace body is prevented from overflowing, heat in the furnace body is prevented from hurting workers, and practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of monomer boron production, and more specifically to a reduction furnace for monomer boron production. Background Art

[0002] Common methods for synthesizing boron powder include caustic soda method, sodium borate method, aluminothermic reduction method, etc. Among them, the preparation of boron powder by aluminothermic reduction method is a common and low-cost preparation method. The aluminothermic reduction method uses the reaction characteristics of metal aluminum at a temperature above 500°C and boron oxide or boron salt to decompose boron oxide or boron salt into boron powder, thereby preparing boron powder. The preparation of boron powder is roughly divided into three parts: 1. Thermal reaction process: Put boron oxide or boron salt and metal aluminum into a heating furnace and raise the temperature to above 500°C. At this time, the metal aluminum undergoes an oxidation reaction to form aluminum oxide, and the boron element in the oxide or boron salt is dissociated to form boron powder. 2. Wet reaction process: Add a certain amount of water, accompanied by a thermal reaction, boron oxide and metal aluminum react to form a water-soluble boron salt; 3. Redox process: Add a certain amount of oxygen, accompanied by a thermal reaction, boron oxide and metal aluminum react, so that the produced boron salt undergoes an oxidation-reduction reaction, and finally forms boron powder. The process of preparing monomer boron is generally carried out in a reduction furnace.

[0003] When the prepared monomer boron is taken out, the furnace body has a high temperature, and it takes a long time to cool the furnace body, which affects the preparation efficiency; in addition, when the existing reduction furnace prepares monomer boron, the contact reaction speed is slow when adding water and oxygen, which easily leads to incomplete reaction and affects the preparation quality. For this reason, we propose a reduction furnace for the production of monomer boron. Utility Model Content

[0004] In view of the problems mentioned in the above background technology, the purpose of the present utility model is to provide a reduction furnace for producing monomer boron.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] A reduction furnace for producing monomer boron comprises a furnace body, a stirring mechanism is arranged on the top of the furnace body, a through groove is opened on the outer side of the furnace body, two screw rods are rotatably connected to the inner cavity of the furnace body, an inner baffle is threadedly sleeved between the two screw rods, a movable seat is fixedly connected to the end face of the inner baffle, one end of the movable seat extends through the through groove to the outside of the furnace body and is fixedly connected to an outer baffle, a placement groove is arranged on the top face of the movable seat, an electric heating plate is arranged on the bottom of the inner cavity of the placement groove, a reaction box is sleeved in the inner cavity of the placement groove, the bottom surface of the reaction box and the top surface of the electric heating plate are fitted together, two first motors are fixedly installed on the outer side of the furnace body, and the output shafts of the two first motors are respectively connected to the ends of the two screw rods.

[0007] As a preferred solution of the utility model, the stirring mechanism includes a water pump, an exhaust fan and an electric push rod fixedly mounted on the top surface of the furnace body, the output ends of the water pump and the exhaust fan are fixedly connected with a three-way electric control valve, the bottom end of the three-way electric control valve is fixedly sleeved to the inner cavity of the furnace body and fixedly connected with a hose, the output end of the electric push rod extends to the inner cavity of the furnace body and is fixedly connected with a lifting plate, the middle part of the lifting plate is rotatably connected with a rotating tube, the bottom end of the rotating tube is fixedly connected with a water distribution plate, the bottom surface of the water distribution plate is fixedly connected with a plurality of stirring rods, the bottom surface of the water distribution plate is provided with a plurality of spray holes, the top end of the rotating tube is fixedly sleeved with a rotating joint, the top end of the rotating joint is connected to the bottom end of the hose, the outer side of the rotating tube is fixedly sleeved with a second bevel gear, the top surface of the lifting plate is fixedly connected with a mounting box, the inner cavity of the mounting box is fixedly installed with a second motor, the output shaft of the second motor extends to the outside of the mounting box and is fixedly sleeved with a first bevel gear, the first bevel gear and the second bevel gear are meshed with each other, and the input end of the water pump is fixedly connected with a water extraction pipe.

[0008] As a preferred solution of the utility model, an exhaust valve is fixedly installed on the top surface of the furnace body, and a drain valve is fixedly installed on the bottom of the furnace body.

[0009] As a preferred solution of the utility model, a control panel is fixedly installed on the front of the furnace body, and the control panel is electrically connected to the water pump, the exhaust fan, the first motor, the electric push rod, the second motor and the electric heating plate respectively.

[0010] As a preferred solution of the utility model, the outer diameter of the inner baffle is equal to the inner diameter of the furnace body, and the outer diameter of the furnace body is equal to the inner diameter of the outer baffle.

[0011] As a preferred solution of the utility model, the side surface of the movable seat is in contact with the inner wall of the through groove, and the bottom surface of the movable seat is in contact with the bottom surface of the inner cavity of the furnace body.

[0012] As a preferred solution of the utility model, the inner wall of the placement groove and the outer side surface of the reaction box are in contact with each other.

[0013] The advantages of the utility model are:

[0014] (1) In the utility model, the screw rod, the first motor, the inner baffle plate, the movable seat, and the outer baffle plate are used in coordination with each other, and the screw rod and the inner baffle plate are used to make the movable seat extend from the inner cavity of the furnace body, so as to take out the monomer boron produced after the reaction in the reaction box on the movable seat. At this time, the side surface of the movable seat and the inner wall of the groove are sealed, and the outer side surface of the inner baffle plate and the inner wall of the furnace body are sealed, so as to prevent the hot air in the furnace body from overflowing and prevent the heat in the furnace body from causing harm to the staff.

[0015] (2) In the utility model, the three-way electric control valve, water pump, exhaust fan, water pipe, hose, rotating pipe, water distribution plate and spray hole are used to introduce water and oxygen into the reaction box for reaction. In addition, the electric push rod is used to drive the stirring rod to extend into the reaction box, the second motor is used to drive the first bevel gear to rotate, and the meshing transmission between the first bevel gear and the second bevel gear is used to drive the stirring rod to rotate to stir the material, thereby ensuring the working efficiency of monomer boron production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the furnace body of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the mobile seat of the utility model;

[0020] Figure 5 It is a cross-sectional schematic diagram of the water distribution tray of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1. Furnace body; 2. Stirring mechanism; 3. Through slot; 4. Screw rod; 5. First motor; 6. Inner baffle plate; 7. Moving seat; 8. Outer baffle plate; 9. Placement slot; 10. Electric heating plate; 11. Reaction box; 12. Electric push rod; 13. Lifting plate; 14. Rotating tube; 15. Water distribution plate; 16. Spray hole; 17. Stirring rod; 18. Second bevel gear; 19. Mounting box; 20. Second motor; 21. First bevel gear; 22. Rotating joint; 23. Hose; 24. Three-way electric control valve; 25. Water pump; 26. Exhaust fan; 27. Water extraction pipe; 28. Exhaust valve; 29. ​​Control panel; 30. Drain valve. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Example:

[0027] See also Figure 1-5 A reduction furnace for producing monomer boron comprises a furnace body 1, a stirring mechanism 2 is arranged on the top of the furnace body 1, a through groove 3 is opened on the outer side of the furnace body 1, two screw rods 4 are rotatably connected to the inner cavity of the furnace body 1, an inner baffle plate 6 is threadedly sleeved between the two screw rods 4, a movable seat 7 is fixedly connected to the end face of the inner baffle plate 6, one end of the movable seat 7 passes through the through groove 3 and extends to the outside of the furnace body 1 and is fixedly connected to an outer baffle plate 8, a placement groove 9 is arranged on the top face of the movable seat 7, an electric heating plate 10 is arranged on the bottom of the inner cavity of the placement groove 9, a reaction box 11 is sleeved on the inner cavity of the placement groove 9, the bottom surface of the reaction box 11 and the top surface of the electric heating plate 10 are fitted together, two first motors 5 are fixedly installed on the outer side of the furnace body 1, and the output shafts of the two first motors 5 are respectively connected to the ends of the two screw rods 4.

[0028] In this embodiment, the two first motors 5 are of the same model and can drive the two screw rods 4 to rotate synchronously at the same speed.

[0029] For details, please refer to Figure 1 , Figure 2 and Figure 5The stirring mechanism 2 includes a water pump 25, an exhaust fan 26 and an electric push rod 12 fixedly mounted on the top surface of the furnace body 1. The output ends of the water pump 25 and the exhaust fan 26 are fixedly connected to a three-way electric control valve 24. The bottom end of the three-way electric control valve 24 is fixedly sleeved to the inner cavity of the furnace body 1 and is fixedly connected to a hose 23. The output end of the electric push rod 12 extends to the inner cavity of the furnace body 1 and is fixedly connected to a lifting plate 13. The middle part of the lifting plate 13 is rotatably connected to a rotating tube 14. The bottom end of the rotating tube 14 is fixedly connected to a water distribution plate 15. The bottom surface of the water distribution plate 15 is fixedly connected to a plurality of stirring rods 17. A plurality of spray holes 16 are provided on the bottom surface of the disk 15, a rotary joint 22 is fixedly sleeved on the top end of the rotating tube 14, the top end of the rotary joint 22 is connected to the bottom end of the hose 23, a second bevel gear 18 is fixedly sleeved on the outer side of the rotating tube 14, a mounting box 19 is fixedly connected to the top surface of the lifting plate 13, a second motor 20 is fixedly installed in the inner cavity of the mounting box 19, an output shaft of the second motor 20 extends to the outside of the mounting box 19 and is fixedly sleeved with a first bevel gear 21, the first bevel gear 21 and the second bevel gear 18 are meshed with each other, and a water pump 27 is fixedly connected to the input end of the water pump 25.

[0030] In this embodiment, the end of the water extraction pipe 27 is connected to an external water tank, and the input end of the exhaust fan 26 is connected to an external oxygen tank.

[0031] For details, please refer to Figure 1 An exhaust valve 28 is fixedly installed on the top surface of the furnace body 1, and a drain valve 30 is fixedly installed on the bottom of the furnace body 1.

[0032] In this embodiment, the excess gas in the furnace body 1 is discharged through the exhaust valve 28, and the residual liquid water in the furnace body 1 is discharged through the drain valve 30.

[0033] For details, please refer to Figures 1 to 5 A control panel 29 is fixedly mounted on the front of the furnace body 1 , and the control panel 29 is electrically connected to the water pump 25 , the exhaust fan 26 , the first motor 5 , the electric push rod 12 , the second motor 20 and the electric heating plate 10 , respectively.

[0034] In this embodiment, the control panel 29 is used to control the water pump 25 , the exhaust fan 26 , the first motor 5 , the electric push rod 12 , the second motor 20 and the electric heating plate 10 .

[0035] For details, please refer to Figures 2 to 4 The outer diameter of the inner baffle 6 is equal to the inner diameter of the furnace body 1 , and the outer diameter of the furnace body 1 is equal to the inner diameter of the outer baffle 8 .

[0036] In this embodiment, the sealing between the movable seat 7 and the furnace body 1 is ensured when the movable seat 7 is extended into the inner cavity of the furnace body 1 or when the movable seat 7 is moved out of the inner cavity of the furnace body 1 .

[0037] For details, please refer to Figures 2 to 4 The side surface of the movable seat 7 is in contact with the inner wall of the through groove 3 , and the bottom surface of the movable seat 7 is in contact with the bottom surface of the inner cavity of the furnace body 1 .

[0038] In this embodiment, the sealing between the movable seat 7 and the through groove 3 is ensured, and the movable seat 7 is supported by the bottom of the inner cavity of the furnace body 1 .

[0039] For details, please refer to Figure 4 The inner wall of the placement groove 9 and the outer side surface of the reaction box 11 are in contact with each other.

[0040] In this embodiment, the stability of the reaction box 11 placed in the inner cavity of the placement groove 9 is ensured.

[0041] Working principle: When in use, first start the moving seat 7 to move to the outside of the furnace body 1, and place the reaction box 11 on the moving seat 7, put boron oxide or boron salt and metal aluminum in the reaction box 11, start the first motor 5 to drive the screw rod 4 to rotate, and use the cooperation between the screw rod 4 and the inner baffle 6 to drive the moving seat 7 and the reaction box 11 to move to the inner cavity of the furnace body 1, and then start the electric heating plate 10 to heat the boron oxide or boron salt and metal aluminum in the reaction box 11. At this time, the metal aluminum undergoes an oxidation reaction to form aluminum oxide, and the boron element in the oxide or boron salt is dissociated to form boron powder. Then, the three-way electric control valve 24 is controlled to connect the water pump 25 and the hose 23. The water pump 25 is started to allow external water to enter the water distribution plate 15 from the water pump pipe 27, the three-way electric control valve 24, the hose 23, the rotary joint 22, and the rotating tube 14, so that the water in the water distribution plate 15 is sprayed downward from the spray hole 16, and at the same time, the electric push rod 12 is started to drive the lifting plate 13 and the stirring rod 17 downward. The stirring rod 17 is moved so that the stirring rod 17 extends into the inner cavity of the reaction box 11, the second motor 20 is started to drive the first bevel gear 21 to rotate, and the meshing transmission between the first bevel gear 21 and the rotary joint 22 is used to drive the rotating tube 14, the water separation plate 15 and the stirring rod 17 to rotate, and the stirring rod 17 is used to stir and mix the materials and water in the reaction box 11, and the boron oxide and the metal aluminum react to form a water-soluble boron salt. Finally, the three-way electric control valve 24 is controlled to connect the exhaust fan 26 and the hose 23, and the exhaust fan 26 is started to extract oxygen in the external oxygen tank into the water separation plate 15. At this time, the boron oxide and the metal aluminum react to cause the generated boron salt to undergo an oxidation-reduction reaction and finally form boron powder. After the boron powder is produced, the first motor 5 is started to drive the screw rod 4 to reverse, and the cooperation between the screw rod 4 and the inner baffle 6 is used to drive the movable seat 7 and the reaction box 11 to move to the outside of the furnace body 1, and the reaction box 11 is directly removed from the movable seat 7, and the monomer boron in the reaction box 11 is taken out.

[0042] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A reduction furnace for producing monomeric boron, comprising a furnace body (1), characterized in that: A stirring mechanism (2) is arranged on the top of the furnace body (1), a through groove (3) is provided on the outer side of the furnace body (1), the inner cavity of the furnace body (1) is rotatably connected to two screw rods (4), an inner baffle (6) is threadedly sleeved between the two screw rods (4), the end surface of the inner baffle (6) is fixedly connected to a movable seat (7), one end of the movable seat (7) passes through the through groove (3) and extends to the outside of the furnace body (1) and is fixedly connected to an outer baffle (8), a placement groove (9) is arranged on the top surface of the movable seat (7), an electric heating plate (10) is arranged at the bottom of the inner cavity of the placement groove (9), a reaction box (11) is sleeved in the inner cavity of the placement groove (9), the bottom surface of the reaction box (11) and the top surface of the electric heating plate (10) are in contact with each other, and two first motors (5) are fixedly installed on the outer side of the furnace body (1), and the output shafts of the two first motors (5) are respectively connected to the ends of the two screw rods (4).

2. A reduction furnace for producing monomeric boron according to claim 1, characterized in that: The stirring mechanism (2) comprises a water pump (25), an exhaust fan (26) and an electric push rod (12) fixedly mounted on the top surface of the furnace body (1); the output ends of the water pump (25) and the exhaust fan (26) are fixedly connected to a three-way electric control valve (24); the bottom end of the three-way electric control valve (24) is fixedly sleeved to the inner cavity of the furnace body (1) and is fixedly connected to a hose (23); the output end of the electric push rod (12) extends to the inner cavity of the furnace body (1) and is fixedly connected to a lifting plate (13); the middle part of the lifting plate (13) is rotatably connected to a rotating tube (14); the bottom end of the rotating tube (14) is fixedly connected to a water distribution plate (15); the bottom surface of the water distribution plate (15) is fixedly connected to a plurality of stirring rods (17); A plurality of spray holes (16) are provided on the bottom surface of the disk (15); a rotating joint (22) is fixedly sleeved on the top end of the rotating tube (14); the top end of the rotating joint (22) is connected to the bottom end of a hose (23); a second bevel gear (18) is fixedly sleeved on the outer side of the rotating tube (14); a mounting box (19) is fixedly connected on the top surface of the lifting plate (13); a second motor (20) is fixedly installed in the inner cavity of the mounting box (19); an output shaft of the second motor (20) extends to the outside of the mounting box (19) and is fixedly sleeved on a first bevel gear (21); the first bevel gear (21) and the second bevel gear (18) are meshed with each other; and a water pump (27) is fixedly connected to the input end of the water pump (25).

3. A reduction furnace for producing monomeric boron according to claim 1, characterized in that: An exhaust valve (28) is fixedly mounted on the top surface of the furnace body (1), and a liquid discharge valve (30) is fixedly mounted on the bottom surface of the furnace body (1).

4. A reduction furnace for producing monomeric boron according to claim 1, characterized in that: A control panel (29) is fixedly mounted on the front of the furnace body (1), and the control panel (29) is electrically connected to the water pump (25), the exhaust fan (26), the first motor (5), the electric push rod (12), the second motor (20) and the electric heating plate (10) respectively.

5. The reduction furnace for producing monomeric boron according to claim 1, characterized in that: The outer diameter of the inner baffle (6) is equal to the inner diameter of the furnace body (1), and the outer diameter of the furnace body (1) is equal to the inner diameter of the outer baffle (8).

6. The reduction furnace for producing monomeric boron according to claim 1, characterized in that: The side surface of the movable seat (7) is in contact with the inner wall of the through groove (3), and the bottom surface of the movable seat (7) is in contact with the bottom surface of the inner cavity of the furnace body (1).

7. The reduction furnace for producing monomeric boron according to claim 1, characterized in that: The inner wall of the placement groove (9) is in contact with the outer side surface of the reaction box (11).

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