Medium-frequency electric furnace for lead-calcium alloy production

Abstract

The utility model relates to the technical field of medium-frequency electric furnaces, in particular to a medium-frequency electric furnace for lead-calcium alloy production, which comprises a base and an electric furnace shell, the base is fixedly connected with the electric furnace shell through a support column, a discharging mechanism is arranged below the electric furnace shell, and a furnace barrel is fixedly connected inside the electric furnace shell. A splash-proof mechanism is arranged in the furnace barrel, an electric heating coil is fixedly connected to the outer wall of the furnace barrel, a heat insulation layer is arranged in the electric furnace shell, and two vertical plates are fixedly connected to the upper surface of the base. Through cooperation of a discharging pipe, a discharging pipe, a motor, a screw rod, a threaded barrel, a moving barrel and a through hole, the motor drives the screw rod to rotate, the screw rod drives the threaded barrel to move, the threaded barrel drives the moving barrel to move, the moving barrel drives the through hole to move, the motor is closed when the through hole moves to the discharging pipe, and molten lead-calcium alloy in a furnace barrel is discharged out of the discharging pipe through the through hole. And during discharging, the furnace body does not need to be inclined, so that discharging of the materials is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of medium-frequency electric furnaces, in particular to a medium-frequency electric furnace for producing lead-calcium alloys. Background Art

[0002] A medium frequency electric furnace is a power supply device that converts industrial frequency 50HZ alternating current into medium frequency (above 300HZ to 20KHZ). A medium frequency electric furnace is required to melt the lead-calcium alloy during production.

[0003] For example, patent number CN214747180U is a high-capacity medium-frequency electric furnace for alloy smelting, including an electric furnace shell, an electric furnace base is arranged inside the electric furnace shell, a furnace barrel is arranged on the outer surface of the outer side of the electric furnace base and inside the electric furnace shell, a limiting plate is arranged between the outer surface of the top of the furnace barrel and the inner side of the electric furnace shell, and an electric heating coil is arranged on the bottom outer surface of the limiting plate and the outer surface of the furnace barrel. The above document still has shortcomings. When in use, the fan blades are driven to rotate along the top of the top cover with the positioning axis as the center by turning the handle, thereby opening the opening of the top cover. , and when the furnace drum moves upward, it drives the guide plate to move upward along the electric furnace shell, and utilizes the inclined surface on the inner side of the electric furnace shell to make multiple groups of guide plates open, thereby achieving the effect of facilitating feeding and filling. However, the medium-frequency electric furnace in the above-mentioned document adopts the top discharging method when in use, and the material is discharged by tilting the furnace body. The furnace body is heavy and very inconvenient to operate, which makes it inconvenient to discharge the material. At the same time, when producing lead-calcium alloy, if there is molten lead-calcium alloy inside the furnace drum, when continuing to add lead-calcium alloy solid into the furnace drum, it is easy to cause liquid splashing, which is easy to cause safety accidents. Utility Model Content

[0004] The utility model aims to solve the problem that it is inconvenient to discharge materials, and proposes a medium-frequency electric furnace for producing lead-calcium alloy.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A medium-frequency electric furnace for producing lead-calcium alloy is designed, comprising a base and an electric furnace shell, the base is fixedly connected to the electric furnace shell by pillars, a discharging mechanism is arranged below the electric furnace shell, a furnace barrel is fixedly connected to the interior of the electric furnace shell, a splash-proof mechanism is arranged inside the furnace barrel, an electric heating coil is fixedly connected to the outer wall of the furnace barrel, a heat insulation layer is arranged inside the electric furnace shell, and two vertical plates are fixedly connected to the upper surface of the base.

[0007] Preferably, the discharge mechanism includes a discharge pipe, the outer wall of which is fixedly connected to the outer shell of the electric furnace, the discharge pipe is fixedly connected to the outer wall of the discharge pipe, a motor is fixedly connected to the bottom of the discharge pipe, the output shaft of the motor is fixedly connected to a screw, the outer wall of the end of the screw is rotatably connected to the discharge pipe through a bearing, the outer wall of the screw is threadedly connected to a threaded barrel, the end of the threaded barrel is fixedly connected to a moving barrel, the outer wall of the moving barrel is slidably connected to the discharge pipe, and a through hole is provided inside the moving barrel.

[0008] Preferably, the splash-proof mechanism includes a second sleeve, the second sleeve is fixedly connected to the inner wall of the furnace, the interior of the second sleeve is slidably connected to a second slide rod, a spring is arranged inside the second sleeve, the two ends of the spring are respectively fixedly connected to the second sleeve and the second slide rod, the end of the second slide rod is fixedly connected to a support plate, the end of the support plate is rotatably connected to an ear plate through a pin shaft, and the ear plate is fixed to the inner wall of the furnace.

[0009] Preferably, an electric push rod is fixedly connected to the outer wall of the vertical plate, and a cross bar is fixedly connected to the output end of the electric push rod.

[0010] Preferably, a vertical rod is fixedly connected below the cross rod.

[0011] Preferably, a cover plate is fixedly connected to the lower end of the vertical rod.

[0012] The utility model proposes a medium-frequency electric furnace for producing lead-calcium alloy, which has the beneficial effects of: through the coordination between the discharge pipe, the emission pipe, the motor, the screw, the threaded barrel, the moving barrel and the through hole, the motor drives the screw to rotate, the screw drives the threaded barrel to move, the threaded barrel drives the moving barrel to move, the moving barrel drives the through hole to move, and the motor is turned off when the through hole moves to the discharge pipe, and the molten lead-calcium alloy in the furnace barrel is discharged from the discharge pipe through the through hole. When discharging, there is no need to tilt the furnace body, so that the discharge of materials is convenient.

[0013] Through the cooperation between the second sleeve, the second slide bar, the spring, the support plate and the ear plate, the lead-calcium alloy solid contacts the support plate during the falling process and drives the support plate to rotate, the support plate drives the second slide bar to move, the second slide bar slides inside the second sleeve and compresses the spring, the spring buffers the force received, and the gravitational potential energy of the lead-calcium alloy solid when falling is significantly reduced. When the lead-calcium alloy solid falls into the interior of the furnace drum and contacts with the molten lead-calcium alloy, it will not cause obvious liquid splashing. When lead-calcium alloy solids continue to be added to the interior of the furnace drum, it is not easy to cause liquid splashing and safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2It is a structural sectional view of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the connection between the furnace tube, the electric heating coil and the heat insulation layer in the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the connection between the motor, the screw and the threaded barrel in the utility model;

[0018] Figure 5 It is a structural schematic diagram of the connection between the motor, the discharge pipe and the discharge pipe in the utility model;

[0019] Figure 6 It is a schematic structural diagram of the connection between the second sleeve, the second slide rod and the spring in the utility model.

[0020] In the figure: 1. base, 2. electric furnace shell, 3. discharge mechanism, 301. discharge pipe, 302. discharge pipe, 303. motor, 304. screw, 305. threaded cylinder, 306. moving cylinder, 307. through hole, 3a1. first slide bar, 3a2. first sleeve, 4. splash-proof mechanism, 401. second sleeve, 402. second slide bar, 403. spring, 404. support plate, 405. ear plate, 5. furnace barrel, 6. electric heating coil, 7. thermal insulation layer, 8. vertical plate, 9. electric push rod, 10. cross bar, 11. vertical bar, 12. cover plate. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] Embodiment 1:

[0023] See attached Figure 1-6 : In this embodiment, a medium-frequency electric furnace for producing lead-calcium alloy includes a base 1 and an electric furnace shell 2. The base 1 is fixedly connected to the electric furnace shell 2 through a support. A discharge mechanism 3 is arranged below the electric furnace shell 2. The discharge mechanism 3 facilitates the discharge of materials in a furnace drum 5. A furnace drum 5 is fixedly connected to the interior of the electric furnace shell 2. A splash-proof mechanism 4 is arranged inside the furnace drum 5. The splash-proof mechanism 4 prevents liquid from splashing. An electric heating coil 6 is fixedly connected to the outer wall of the furnace drum 5. The electric heating coil 6 heats the interior of the furnace drum 5. The electric heating coil 6 is connected to an external power supply.

[0024] An insulation layer 7 is provided inside the electric furnace shell 2. The material of the insulation layer 7 is the same as that of a high-capacity medium-frequency electric furnace for alloy smelting with patent number CN214747180U. Two vertical plates 8 are fixedly connected to the upper surface of the base 1. An electric push rod 9 is fixedly connected to the outer wall of the vertical plate 8. A cross bar 10 is fixedly connected to the output end of the electric push rod 9. The electric push rod 9 drives the cross bar 10 to move. A vertical rod 11 is fixedly connected below the cross bar 10. The cross bar 10 drives the vertical rod 11 to move. A cover plate 12 is fixedly connected to the lower end of the vertical rod 11. The vertical rod 11 drives the cover plate 12 to move. The cover plate 12 blocks the upper part of the furnace tube 5.

[0025] The discharge mechanism 3 includes a discharge pipe 301, a discharge pipe 302, a motor 303, a screw 304, a threaded cylinder 305, a moving cylinder 306 and a through hole 307. The outer wall of the discharge pipe 301 is fixedly connected to the electric furnace shell 2. The discharge pipe 301 is fixedly connected to the outer wall of the discharge pipe 302. The discharge pipe 302 is convenient for materials to pass through. The motor 303 is fixedly connected to the lower part of the discharge pipe 301. The output shaft of the motor 303 is fixedly connected to the screw 304. The motor 303 drives the screw 304 to rotate.

[0026] The outer wall of the end of the screw 304 is rotatably connected to the discharge pipe 301 through a bearing, and the outer wall of the screw 304 is threadedly connected with a threaded barrel 305, the screw 304 drives the threaded barrel 305 to move, and the end of the threaded barrel 305 is fixedly connected with a moving barrel 306, the threaded barrel 305 drives the moving barrel 306 to slide, the outer wall of the moving barrel 306 is slidably connected to the discharge pipe 301, and the interior of the moving barrel 306 is provided with a through hole 307, and the through hole 307 is convenient for materials to pass through;

[0027] The motor 303 drives the screw 304 to rotate, the screw 304 drives the threaded barrel 305 to move, the threaded barrel 305 drives the moving barrel 306 to move, the moving barrel 306 drives the through hole 307 to move, and when the through hole 307 moves to the discharge pipe 302, the motor 303 is turned off, and the molten lead-calcium alloy inside the furnace barrel 5 is discharged from the discharge pipe 302 through the through hole 307. There is no need to tilt the furnace body when discharging, so that the discharge of materials is convenient.

[0028] The splash-proof mechanism 4 includes a second sleeve 401, a second slide bar 402, a spring 403, a support plate 404 and an ear plate 405. The second sleeve 401 is fixed to the inner wall of the furnace drum 5. The second sleeve 401 is slidably connected to the second slide bar 402. The second slide bar 402 slides inside the second sleeve 401. The second sleeve 401 is provided with a spring 403. The model of the spring 403 is selected according to actual use requirements to meet the work requirements.

[0029] The two ends of the spring 403 are fixedly connected to the second sleeve 401 and the second slide bar 402 respectively. The end of the second slide bar 402 is fixedly connected with a support plate 404. The support plate 404 drives the second slide bar 402 to slide. The end of the support plate 404 is rotatably connected to the ear plate 405 through a pin shaft. The ear plate 405 supports the support plate 404. The ear plate 405 is fixedly connected to the inner wall of the furnace drum 5.

[0030] During the falling process, the lead-calcium alloy solid contacts the support plate 404 and drives the support plate 404 to rotate, and the support plate 404 drives the second slide bar 402 to move. The second slide bar 402 slides inside the second sleeve 401 and compresses the spring 403. The spring 403 buffers the force received, and the gravitational potential energy of the lead-calcium alloy solid is significantly reduced when the lead-calcium alloy solid falls into the interior of the furnace tube 5 and contacts with the molten lead-calcium alloy. No obvious liquid splashing will be caused. When the lead-calcium alloy solid continues to be added to the interior of the furnace tube 5, it is not easy to cause liquid splashing, and it is not easy to cause safety accidents.

[0031] Working principle:

[0032] When the lead-calcium alloy is produced and processed by the medium-frequency electric furnace for lead-calcium alloy production, the electric push rod 9 is started, the electric push rod 9 drives the cross bar 10 to move upward, and the cross bar 10 drives the cover plate 12 to move upward through the vertical rod 11. First, a part of the lead-calcium alloy solid is added to the inside of the furnace tube 5, and the electric push rod 9 controls the cover plate 12 to fall. The electric heating plate coil 6 heats the inside of the furnace tube 5 to melt the lead-calcium alloy solid, and the heat insulation layer 7 reduces the heat transfer to the outside;

[0033] Splash-proof mechanism:

[0034] When it is necessary to add lead-calcium alloy solid to the furnace drum 5 again, the electric push rod 9 controls the cover plate 12 to rise, and the lead-calcium alloy solid is added to the furnace drum 5. The lead-calcium alloy solid contacts the support plate 404 during the falling process and drives the support plate 404 to rotate. The support plate 404 drives the second slide bar 402 to move. The second slide bar 402 slides inside the second sleeve 401 and compresses the spring 403. The spring 403 buffers the force received. The gravitational potential energy of the lead-calcium alloy solid when falling is significantly reduced. When the lead-calcium alloy solid falls into the furnace drum 5 and contacts with the molten lead-calcium alloy, it will not cause obvious liquid splashing. When the lead-calcium alloy solid is continued to be added to the furnace drum 5, it is not easy to cause liquid splashing, and it is not easy to cause safety accidents.

[0035] Nesting stage:

[0036] Lead-calcium alloy is produced and processed inside the furnace drum 5. When the molten lead-calcium alloy needs to be discharged, the motor 303 is started, the motor 303 drives the screw 304 to rotate, the screw 304 drives the threaded barrel 305 to move, the threaded barrel 305 drives the moving barrel 306 to move, the moving barrel 306 drives the through hole 307 to move, and when the through hole 307 moves to the discharge pipe 302, the motor 303 is turned off, and the molten lead-calcium alloy inside the furnace drum 5 is discharged from the discharge pipe 302 through the through hole 307. There is no need to tilt the furnace body when discharging, so that the discharge of materials is convenient.

[0037] Embodiment 2:

[0038] See attached Figure 1-6 : In this embodiment, a medium frequency electric furnace for producing lead-calcium alloy, the discharge mechanism 3 also includes a first slide bar 3a1 and a first sleeve 3a2, the end of the first slide bar 3a1 is fixedly connected to the moving cylinder 306, the moving cylinder 306 drives the first slide bar 3a1 to move, the outer wall of the first slide bar 3a1 is slidably connected to the first sleeve 3a2, the first slide bar 3a1 slides inside the first sleeve 3a2, and the end of the first sleeve 3a2 is fixedly connected to the discharge pipe 301;

[0039] Through the cooperation between the first slide bar 3a1 and the first sleeve 3a2, the moving cylinder 306 drives the first slide bar 3a1 to move when sliding, and the first slide bar 3a1 slides inside the first sleeve 3a2. The first slide bar 3a1 and the first sleeve 3a2 guide the movement of the moving cylinder 306.

[0040] Working principle:

[0041] When the moving cylinder 306 slides, the first sliding rod 3a1 moves. The first sliding rod 3a1 slides inside the first sleeve 3a2. The first sliding rod 3a1 and the first sleeve 3a2 guide the movement of the moving cylinder 306.

[0042] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A medium frequency electric furnace for producing lead-calcium alloy, comprising a base (1) and an electric furnace shell (2), wherein the base (1) is fixedly connected to the electric furnace shell (2) via a support, and characterized in that: A discharge mechanism (3) is provided below the electric furnace shell (2); a furnace drum (5) is fixedly connected to the interior of the electric furnace shell (2); a splash-proof mechanism (4) is provided inside the furnace drum (5); an electric heating coil (6) is fixedly connected to the outer wall of the furnace drum (5); a heat insulation layer (7) is provided inside the electric furnace shell (2); and two vertical plates (8) are fixedly connected to the upper surface of the base (1).

2. A medium frequency electric furnace for producing lead-calcium alloy according to claim 1, characterized in that: The discharge mechanism (3) comprises a discharge pipe (301), the outer wall of which is fixedly connected to the electric furnace shell (2), the discharge pipe (301) is fixedly connected to the outer wall of the discharge pipe (302), a motor (303) is fixedly connected below the discharge pipe (301), the output shaft of the motor (303) is fixedly connected to a screw (304), the outer wall of the end of the screw (304) is rotatably connected to the discharge pipe (301) via a bearing, the outer wall of the screw (304) is threadedly connected to a threaded barrel (305), the end of the threaded barrel (305) is fixedly connected to a moving barrel (306), the outer wall of the moving barrel (306) is slidably connected to the discharge pipe (301), and a through hole (307) is provided inside the moving barrel (306).

3. The medium frequency electric furnace for producing lead-calcium alloy according to claim 1, characterized in that: The splash-proof mechanism (4) comprises a second sleeve (401), the second sleeve (401) is fixedly connected to the inner wall of the furnace drum (5), the interior of the second sleeve (401) is slidably connected to a second slide bar (402), a spring (403) is arranged inside the second sleeve (401), the two ends of the spring (403) are respectively fixedly connected to the second sleeve (401) and the second slide bar (402), the end of the second slide bar (402) is fixedly connected to a support plate (404), the end of the support plate (404) is rotatably connected to an ear plate (405) via a pin shaft, and the ear plate (405) is fixedly connected to the inner wall of the furnace drum (5).

4. The medium frequency electric furnace for producing lead-calcium alloy according to claim 1, characterized in that: An electric push rod (9) is fixedly connected to the outer wall of the vertical plate (8), and a cross bar (10) is fixedly connected to the output end of the electric push rod (9).

5. A medium frequency electric furnace for producing lead-calcium alloy according to claim 4, characterized in that: A vertical rod (11) is fixedly connected below the cross rod (10).

6. A medium frequency electric furnace for producing lead-calcium alloy according to claim 5, characterized in that: A cover plate (12) is fixedly connected to the lower end of the vertical rod (11).

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