Industrial silicon refining furnace

Abstract

The utility model discloses an industrial silicon refining furnace, which belongs to the field of industrial silicon processing and comprises a refining furnace, the top of the refining furnace is fixedly connected with a feed pipe, the bottom of the refining furnace is fixedly connected with a discharge pipe, a filter component is arranged in the discharge pipe, a mixing mechanism is arranged in the refining furnace, and the mixing mechanism comprises a rotating shaft. A ventilation assembly is arranged in the refining furnace, and an auxiliary mechanism is arranged on the inner bottom wall of the refining furnace. The device has the beneficial effects that the auxiliary mechanism is arranged and comprises a rotating rod, the rotating rod is fixedly connected with a plurality of scraping plates arranged in the circumferential direction, the rotating rod drives the scraping plates to rotate, molten slag on the inner bottom wall of the refining furnace is pushed towards the discharging pipe, and the slag discharging efficiency is improved; a transmission gear is fixedly connected to the rotating rod, a gear ring is fixedly connected to the inner wall of the refining furnace, the gear ring drives the transmission gear to drive the rotating rod to rotate while the rotating shaft drives the connecting plate and the rotating rod to rotate, an additional power source is avoided, and the resource utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the field of industrial silicon processing, in particular to an industrial silicon refining furnace. Background Art

[0002] Industrial silicon is usually refined using chlorine. The introduced chlorine removes impurities in crude silicon through both physical and chemical effects. The physical effect is that after the chlorine is introduced into the liquid silicon, the tiny slag particles in the silicon are more easily aggregated into large particles under the action of new phase bubbles. The slag and liquid silicon are separated by taking advantage of the difference in density between the slag and the liquid silicon, thereby making the liquid silicon purer.

[0003] After searching, the Chinese patent announcement number CN219174220U is found, which discloses an industrial silicon refining furnace. The patent has a refined silicon liner installed inside the refining furnace body. A plurality of annular heat flow chambers are designed between the refined silicon liner and the furnace body. Adjacent annular heat flow chambers are not interconnected. During refining, heat enters the interior of the annular heat flow chamber through a pipe on one side, surrounds the refined silicon liner from the outside, and then heats the silicon material inside the refined silicon liner, while the outer refining furnace body plays a role of heat preservation to prevent heat from being transferred outward. The inner liner is fully covered by annular heating, so that the internal material can be heated evenly, avoiding uneven heating of the silicon material that causes it to be unable to fully contact and react with chlorine. The heat emitted from the annular heat flow chamber can be introduced into the central area of ​​the inner liner through the heat-conducting vertical plate, so that the surrounding silicon material can be heated from the inside to the outside, thereby improving the conduction efficiency of heat energy.

[0004] However, some slag may be deposited on the inner bottom wall of the refining furnace. The slag cannot be discharged directly through the slag discharge bottom pipe and needs additional cleaning, which is troublesome to operate and affects efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide an industrial silicon refining furnace in order to solve the above problems.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] An industrial silicon refining furnace comprises a refining furnace, a feeding pipe is fixedly connected to the top of the refining furnace, a discharging pipe is fixedly connected to the bottom of the refining furnace, a filtering assembly is arranged in the discharging pipe, a mixing mechanism is arranged inside the refining furnace, the mixing mechanism comprises a rotating shaft, a ventilation assembly is arranged in the refining furnace, an auxiliary mechanism is arranged on the inner bottom wall of the refining furnace, the auxiliary mechanism comprises a connecting plate fixedly connected to the bottom of the rotating shaft, a rotating rod is rotatably connected in the connecting plate, the rotating rod and the rotating shaft are staggered, a plurality of circumferentially arranged scrapers are fixedly connected to the outer wall of the rotating rod, the scrapers are tightly attached to the inner bottom wall of the refining furnace, and the auxiliary mechanism also comprises a power assembly, which is used to drive the rotating rod to rotate.

[0008] Preferably, the power assembly includes a transmission gear, the top of the rotating rod extends out of the connecting plate and is fixedly connected to the transmission gear, a plurality of connecting rods are fixedly connected to the inner wall of the refining furnace, and the other end of the connecting rod is fixedly connected to a gear ring, which meshes with the transmission gear.

[0009] Preferably, the rotating shaft is rotatably connected to the inner top wall of the refining furnace, and a plurality of stirring plates are fixedly connected to the outer wall of the rotating shaft, and the stirring plates are located inside the refining furnace. The auxiliary mechanism also includes a driving assembly, and the driving assembly is used to drive the rotating shaft to rotate.

[0010] Preferably, the driving assembly includes a driven bevel gear fixedly connected to the rotating shaft, a vertical plate is fixedly connected to the top of the refining furnace, a rotating motor is fixedly connected to one side of the vertical plate, and an active bevel gear is fixedly connected to the output end of the rotating motor, and the active bevel gear is meshed with the driven bevel gear.

[0011] Preferably, the ventilation assembly includes an air inlet pipe, which is rotatably connected to the top of the rotating shaft. A ventilation cavity connected to the air inlet pipe is provided in the rotating shaft. The interior of the stirring plate is connected to the interior of the rotating shaft, and a plurality of air outlet holes are provided on the stirring plate.

[0012] Preferably, the filter assembly includes a filter plate, which is slidably connected in the discharge pipe, one end of the filter plate extends out of the discharge pipe and is fixedly connected to a pull rod, and a limiting groove is provided on the inner wall of the discharge pipe close to the pull rod.

[0013] The beneficial effects are: an auxiliary mechanism is provided, the auxiliary mechanism includes a rotating rod, a plurality of circumferentially arranged scrapers are fixedly connected to the rotating rod, the rotating rod drives the scrapers to rotate, and pushes the slag on the bottom wall of the refining furnace toward the discharge pipe, thereby improving the efficiency of slag discharge; a transmission gear is fixedly connected to the rotating rod, and a gear ring is fixedly connected to the inner wall of the refining furnace, and while the rotating shaft drives the connecting plate and the rotating rod to rotate, the gear ring drives the transmission gear to drive the rotating rod to rotate, thereby avoiding the use of additional power sources and improving resource utilization.

[0014] The additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of an industrial silicon refining furnace described in the utility model;

[0017] Figure 2This is a front view of the internal structure of an industrial silicon refining furnace described in the utility model;

[0018] Figure 3 It is a schematic diagram of an auxiliary mechanism of an industrial silicon refining furnace described in the utility model;

[0019] Figure 4 It is a left view of an industrial silicon refining furnace described in the utility model;

[0020] Figure 5 This is a top view of an industrial silicon refining furnace described in the utility model;

[0021] Figure 6 It is an enlarged view of point A of an industrial silicon refining furnace described in the utility model.

[0022] The description of the accompanying drawings is as follows: 1. refining furnace; 101. feed pipe; 102. discharge pipe; 201. rotating shaft; 202. stirring plate; 203. driven bevel gear; 204. vertical plate; 205. rotating motor; 206. driving bevel gear; 301. connecting plate; 302. rotating rod; 303. scraper; 304. transmission gear; 305. connecting rod; 306. gear ring; 4. air inlet pipe; 5. filter plate; 501. pull rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] like Figure 1-Figure 6As shown, an industrial silicon refining furnace comprises a refining furnace 1, wherein an electric heating wire is arranged in the wall of the refining furnace 1 for heating the liquid silicon in the refining furnace 1 so that the liquid silicon and the chlorine are mixed more fully, a feed pipe 101 is welded on the top of the refining furnace 1, a discharge pipe 102 is welded on the bottom of the refining furnace 1, the discharge pipe 102 is located in the middle of the bottom wall of the refining furnace 1, a control valve is arranged in the discharge pipe 102, a filter assembly is arranged in the discharge pipe 102, and the filter assembly comprises a filter plate 5, the filter plate 5 is slidably connected in the discharge pipe 102, one end of the filter plate 5 extends out of the discharge pipe 102 and is fixed A pull rod 501 is fixedly connected, and a limiting groove is provided on the inner wall of the discharge pipe 102 near the pull rod 501. A placement groove is provided on the inner wall of the discharge pipe 102, and the placement groove and the limiting groove correspond to each other. The end of the filter plate 5 away from the pull rod 501 is fixedly connected to a limiting block, and the limiting block is located in the placement groove. When the slag needs to be cleaned, the filter plate 5 is pulled by the pull rod 501. After the limiting block is stuck in the limiting groove, the pulling is stopped, and the filter plate 5 is limited by the limiting groove to avoid a gap on the discharge pipe 102 after the filter plate 5 is completely pulled out of the discharge pipe 102, thereby affecting the discharge of the slag.

[0027] A mixing mechanism is provided inside the refining furnace 1, and the mixing mechanism includes a rotating shaft 201, which is rotatably connected to the inner top wall of the refining furnace 1, and a plurality of stirring plates 202 are fixedly connected to the outer wall of the rotating shaft 201, and the stirring plates 202 are located inside the refining furnace 1. The auxiliary mechanism also includes a driving assembly, which is used to drive the rotating shaft 201 to rotate.

[0028] The driving assembly includes a driven bevel gear 203 fixedly connected to the rotating shaft 201, a vertical plate 204 is bolted to the top of the refining furnace 1, a rotating motor 205 is bolted to one side of the vertical plate 204, an active bevel gear 206 is fixedly connected to the output end of the rotating motor 205, the active bevel gear 206 is meshed with the driven bevel gear 203, the rotating motor 205 is started, the rotating motor 205 drives the active bevel gear 206 to rotate, the active bevel gear 206 is meshed with the driven bevel gear 203, thereby driving the driven bevel gear 203 to drive the rotating shaft 201 and the stirring plate 202 to rotate.

[0029] A ventilation assembly is provided in the refining furnace 1, and the ventilation assembly includes an air inlet pipe 4, which is rotatably connected to the top of the rotating shaft 201. A ventilation cavity connected to the air inlet pipe 4 is provided in the rotating shaft 201. The inside of the stirring plate 202 is connected to the inside of the rotating shaft 201. A plurality of air outlets are provided on the stirring plate 202. Chlorine is discharged synchronously through the plurality of air outlets, thereby increasing the contact area between chlorine and liquid silicon and improving the efficiency of subsequent mixing.

[0030] An auxiliary mechanism is provided on the inner bottom wall of the refining furnace 1, and the auxiliary mechanism includes a connecting plate 301 fixedly connected to the bottom of the rotating shaft 201, a rotating rod 302 is rotatably connected inside the connecting plate 301, the rotating rod 302 is staggered with the rotating shaft 201, and a plurality of circumferentially arranged scrapers 303 are fixedly connected to the outer wall of the rotating rod 302, the length of the scraper 303 is not less than the distance between the rotating rod 302 and the discharge pipe 102, and the scraper 303 is in close contact with the inner bottom wall of the refining furnace 1, and the auxiliary mechanism also includes a power assembly, which is used to drive the rotating rod 302 to rotate.

[0031] The power assembly includes a transmission gear 304. The top of the rotating rod 302 extends out of the connecting plate 301 and is fixedly connected to the transmission gear 304. A plurality of connecting rods 305 are fixedly connected to the inner wall of the refining furnace 1. The other end of the connecting rod 305 is fixedly connected to a gear ring 306. The gear ring 306 is meshed with the transmission gear 304. When the rotating rod 302 rotates, the gear ring 306 will drive the transmission gear 304 to drive the rotating rod 302 to rotate, and the rotating rod 302 drives the scraper 303 to rotate.

[0032] Working principle: When in use, liquid silicon is added into the refining furnace 1 through the feed pipe 101, and chlorine is introduced into the refining furnace 1 through the air inlet pipe 4. The chlorine enters the rotating shaft 201 through the air inlet pipe 4, and then is discharged into the refining furnace 1 through a number of air outlets provided on the stirring plate 202, thereby increasing the contact area between the chlorine and the liquid silicon. The rotating motor 205 is started, and the rotating motor 205 drives the active bevel gear 206 to rotate. The active bevel gear 206 meshes with the driven bevel gear 203, thereby driving the driven bevel gear 203 to drive the rotating shaft 201 and the stirring plate 202 to rotate, and the chlorine and liquid silicon are mixed, so that the tiny slag particles in the liquid silicon are aggregated into large particles under the action of the new phase bubbles. After refining for a period of time, the control valve in the discharge pipe 102 is opened to discharge the refined liquid silicon, and the slag is filtered onto the filter plate 5 and the inner bottom wall of the refining furnace 1. The filter plate 5 is pulled apart by the pull rod 501, and the rotating motor 205 is started. The connecting plate 301 is driven to rotate through the rotating shaft 201, and the connecting plate 301 drives the rotating rod 302 and the scraper 303 to rotate. While the rotating rod 302 rotates, the gear ring 306 drives the transmission gear 304 to drive the rotating rod 302 to rotate, and the rotating rod 302 drives the scraper 303 to rotate, pushing the slag on the inner bottom wall of the refining furnace 1 toward the discharge pipe 102, avoiding additional cleaning and improving the efficiency of slag discharge.

[0033] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An industrial silicon refining furnace, comprising a refining furnace (1), wherein a feed pipe (101) is fixedly connected to the top of the refining furnace (1), a discharge pipe (102) is fixedly connected to the bottom of the refining furnace (1), a filter assembly is arranged in the discharge pipe (102), a mixing mechanism is arranged inside the refining furnace (1), the mixing mechanism comprises a rotating shaft (201), and a ventilation assembly is arranged in the refining furnace (1), characterized in that: The inner bottom wall of the refining furnace (1) is provided with an auxiliary mechanism, the auxiliary mechanism comprising a connecting plate (301) fixedly connected to the bottom of the rotating shaft (201), a rotating rod (302) rotatably connected inside the connecting plate (301), the rotating rod (302) and the rotating shaft (201) being staggered, a plurality of circumferentially arranged scrapers (303) being fixedly connected to the outer wall of the rotating rod (302), the scrapers (303) being tightly attached to the inner bottom wall of the refining furnace (1), and the auxiliary mechanism further comprising a power assembly, the power assembly being used to drive the rotating rod (302) to rotate.

2. An industrial silicon refining furnace according to claim 1, characterized in that: The power assembly comprises a transmission gear (304), the top of the rotating rod (302) extends out of the connecting plate (301) and is fixedly connected to the transmission gear (304), the inner wall of the refining furnace (1) is fixedly connected with a plurality of connecting rods (305), the other end of the connecting rod (305) is fixedly connected with a gear ring (306), and the gear ring (306) is meshed with the transmission gear (304).

3. An industrial silicon refining furnace according to claim 1, characterized in that: The rotating shaft (201) is rotatably connected to the inner top wall of the refining furnace (1); a plurality of stirring plates (202) are fixedly connected to the outer wall of the rotating shaft (201); the stirring plates (202) are located inside the refining furnace (1); and the auxiliary mechanism further comprises a driving component, which is used to drive the rotating shaft (201) to rotate.

4. An industrial silicon refining furnace according to claim 3, characterized in that: The driving assembly comprises a driven bevel gear (203) fixedly connected to the rotating shaft (201); a vertical plate (204) is fixedly connected to the top of the refining furnace (1); a rotating motor (205) is fixedly connected to one side of the vertical plate (204); an active bevel gear (206) is fixedly connected to the output end of the rotating motor (205); and the active bevel gear (206) is meshed with the driven bevel gear (203).

5. An industrial silicon refining furnace according to claim 3, characterized in that: The ventilation assembly comprises an air inlet pipe (4), the air inlet pipe (4) is rotatably connected to the top of the rotating shaft (201), a ventilation cavity connected to the air inlet pipe (4) is provided in the rotating shaft (201), the interior of the stirring plate (202) is connected to the interior of the rotating shaft (201), and a plurality of air outlet holes are provided on the stirring plate (202).

6. An industrial silicon refining furnace according to claim 1, characterized in that: The filter assembly includes a filter plate (5), which is slidably connected in the discharge pipe (102), one end of the filter plate (5) extends out of the discharge pipe (102) and is fixedly connected to a pull rod (501), and a limiting groove is provided on the inner wall of the discharge pipe (102) on the side close to the pull rod (501).

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