CN111945222B

CN111945222B - Ingot furnace with tail gas treatment function

Info

Publication number: CN111945222B
Application number: CN202010820679.4A
Authority: CN
Inventors: 刘穗
Original assignee: Tangshan Xinhuifeng Heavy Industry Metallurgical Forging Co ltd
Current assignee: Tangshan Xinhuifeng Heavy Industry Metallurgical Forging Co.,Ltd.
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2022-02-18
Anticipated expiration: 2040-08-14
Also published as: CN111945222A

Abstract

The invention discloses an ingot furnace with a tail gas treatment function, wherein the top end of the inner side of an installation support is fixedly connected with an upper furnace body, the outer side of the upper furnace body is fixedly provided with a heat insulation sleeve, the top end of the upper furnace body is connected with a gas inlet vertical pipe, an inlet of the gas inlet vertical pipe is positioned at the top of the outer side of the upper furnace body, an outlet of the top of the outer side of the upper furnace body is positioned at the bottom end of a heat insulation plate, the top end of the gas inlet vertical pipe is connected to the output end of the bottom of a rear three-way valve, and the bottom of one side of the heat insulation sleeve is fixedly connected with a circulating gas pump. The processing safety of the ingot furnace is improved.

Description

Ingot furnace with tail gas treatment function

Technical Field

The invention relates to the technical field of ingot furnaces, in particular to an ingot furnace with a tail gas treatment function.

Background

The ingot furnace is a professional device for preparing solar-grade polycrystalline silicon ingots, and is rapidly developed along with the explosion of the photovoltaic industry, the production process of polycrystalline ingots is a silicon material melting and recrystallization process, and the procedures of charging, vacuumizing, heating, melting, crystal growth, annealing, cooling, discharging and the like are required;

however, in the process of producing polycrystalline silicon by using an ingot furnace in the market at present, in order to obtain a low-defect high-quality silicon ingot, the raw material needs to be gradually melted from top to bottom when being melted, and the melted raw material in a crucible needs to vertically grow crystals from bottom to top in the crystal growth process, so that a heater in the ingot furnace needs to be arranged at the top of the ingot furnace, heat in the ingot furnace mainly gathers at the top in the heating and melting process, the melting speed of the raw material at the lower layer of the crucible is slowed down, the heating time is prolonged, the processing efficiency is reduced, and energy waste is caused;

the invention belongs to an improved invention, which is a further improvement based on a Chinese patent submitted by the applicant on the year 2020, 07, 31, and the inventor finds that carbon monoxide generated in the heating process of polycrystalline silicon enters molten silicon liquid due to the lack of a corresponding tail gas treatment mechanism in the process of using the ingot furnace, so that the content of carbon element and oxygen element in the finally formed silicon ingot is higher, the quality of the polycrystalline silicon ingot is reduced, and the application effect of a solar panel made of polycrystalline silicon is influenced.

Disclosure of Invention

In order to achieve the purpose, the invention provides the following technical scheme:

an ingot furnace with a tail gas treatment function comprises an upper furnace body of a mounting bracket, a heating control mechanism, a heat control mechanism, a vibration isolation buffer mechanism, a bottom uniform cooling mechanism, a feeding mechanism and a tail gas treatment mechanism, wherein the tail gas treatment mechanism is arranged on the outer side of the upper furnace body; the tail gas treatment mechanism comprises a heat insulation sleeve, an air inlet vertical pipe, a circulating air pump, a front air washing tank, a rear air washing tank, a front three-way valve, a lower exhaust pipe, an upper exhaust pipe, a lower air guide pipe, a spiral circulating pipe, an upper exhaust pipe, a middle air guide pipe, a distribution square pipe, a drying barrel, a middle three-way valve, an upper air guide pipe, a heating sleeve, a rear three-way valve, a control valve, a side air guide pipe, a sealing valve, an air storage barrel, a liquid adding port and a liquid discharging valve; the heat insulation device is characterized in that a heat insulation sleeve is fixedly installed on the outer side of the upper furnace body, the top end of the upper furnace body is connected with an air inlet vertical pipe, an inlet of the air inlet vertical pipe is located at the top of the outer side of the upper furnace body, an outlet of the top of the outer side of the upper furnace body is located at the bottom end of the heat insulation plate, the top end of the air inlet vertical pipe is connected to the output end of the bottom of the rear three-way valve, the bottom of one side of the heat insulation sleeve is fixedly connected with a circulating air pump, the input end of the circulating air pump is electrically connected with the output end of a mains supply, a front air washing box for containing an ammonia solution of cuprous chloride is welded in the middle of the other side of the heat insulation sleeve, and a rear air washing box for containing distilled water is welded at a position, corresponding to the side edge of the front air washing box, on the other side of the heat insulation sleeve; one end of the circulating air pump is fixedly connected to the output end of the front three-way valve through a pipeline, the bottom input end of the front three-way valve is communicated to the bottom of the inner side of the upper furnace body through a lower exhaust pipe, the top input end of the front three-way valve is communicated to the bottom of the heat-insulating plate at the top of the inner side of the upper furnace body through an upper exhaust pipe, the other end of the circulating air pump is fixedly connected with a lower air guide pipe, one end of the lower air guide pipe is connected with a spiral circulating pipe which is positioned inside the heat-insulating sleeve and is coiled on the outer side of the upper furnace body, one end of the spiral circulating pipe is communicated to the position below the liquid level inside the front air washing box through an upper exhaust pipe, the top of the front air washing box is communicated to the position below the liquid level inside the rear air washing box through a middle air guide pipe, and the bottom ends of the upper exhaust pipe and the middle air guide pipe are fixedly connected with a distribution square pipe; one end of the top of the rear gas washing tank is fixedly connected with a drying barrel for containing silica gel drying particles, the top end of the drying barrel is connected to the input end of the bottom of a middle three-way valve through a pipeline, the output end of the top of the middle three-way valve is fixedly connected with an upper gas guide pipe, the middle part of the outer side of the upper gas guide pipe is fixedly provided with a heating sleeve with an internal heating wire, one side of the upper gas guide pipe is connected to the input end of one side of the rear three-way valve, and the input end of the top of the rear three-way valve is fixedly connected with a control valve; the output end of one side of the middle three-way valve is fixedly connected with a side air guide pipe, one end of the bottom of the side air guide pipe is fixedly connected with a sealing valve, and the bottom of the sealing valve is fixedly connected with an air storage barrel; the liquid adding port is formed in one corner of the top of the front gas washing tank and one corner of the top of the rear gas washing tank, and the liquid discharging valve is fixedly connected to the middle of the bottom end of the front gas washing tank and the middle of the bottom end of the rear gas washing tank.

Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use:

1. the tail gas treatment mechanism is arranged, only the lower exhaust pipe is communicated with the circulating gas pump through the front three-way valve, the mixed gas in the ingot furnace is pumped out from the bottom under the action of the circulating gas pump, the mixed gas is guided into the spiral circulating pipe through the lower gas guide pipe, and the preheating of the exhaust gas is utilized to preserve heat of the outer side of the ingot furnace under the action of the spiral circulating pipe and the heat preservation sleeve, so that the waste of heat is effectively avoided, and the utilization rate of energy is improved;

carbon monoxide in the mixed gas is removed through the ammonia solution of cuprous chloride in the front gas washing tank, ammonia gas newly added in the mixed gas is removed through the absorption of distilled water in the rear gas washing tank, and water vapor in the mixed gas is adsorbed through the drying barrel, so that the influence of carbon monoxide generated in the ingot furnace on the quality of a final silicon ingot in the molten silicon liquid is effectively avoided, the influence of the carbon monoxide absorbed by an operator on life safety is prevented, and the processing safety of the ingot furnace is improved;

the gas discharged from the drying barrel is reintroduced into the ingot furnace for circulation through the rear three-way valve and the gas inlet vertical pipe through the upper gas guide pipe, and is heated through the heating sleeve when passing through the upper gas guide pipe, so that the gas is ensured to have higher temperature before entering the ingot furnace, the influence of gas circulation on the internal temperature of the ingot furnace is reduced, and the use process of the tail gas treatment mechanism is optimized;

make external air get into from the ingot furnace bottom through circulating air pump, take out from the top through last exhaust tube with remaining gas in the ingot furnace simultaneously to make these gas store in filter and dry back via side air guide pipe entering gas receiver, effectual inside argon gas and other gaseous leakage as protective gas after having avoided blowing in, further improved the tail gas treatment ability of ingot furnace, improved the feature of environmental protection of ingot furnace.

2. The heating control mechanism is arranged, the number of heating elements is increased through the graphite heater at the top end of the quartz crucible and the graphite heating strips on the side surfaces of the top, so that the temperature at the top end of the inner side of the ingot furnace is heated more quickly, the traction disc is driven to rotate through the driving rod at the top of the supporting block, the traction cable is extended through the rotation of the traction disc, the installation cross rod and the connection sliding pipe are sequentially dropped under the action of gravity, the downward extension speed of the high-temperature zone is accelerated, the temperature difference of the upper layer and the lower layer is reduced while the temperature gradient is formed in the vertical direction in the ingot furnace, the polycrystalline silicon raw material in the middle layer and the polycrystalline silicon raw material in the upper layer in the quartz crucible absorb heat at the same time, the high-temperature zone begins to drop through the dropping of the graphite heating strips after the polycrystalline silicon raw material in the upper layer is melted, and then the temperature of the polycrystalline silicon raw material in the middle layer rapidly exceeds the melting temperature to begin to melt, the processing process of the ingot furnace is optimized;

through the active control to the heat source position, the phenomenon that the heat distribution is uneven because the ingot furnace gathers at the top in the heating process is avoided, the melting speed of the polycrystalline silicon raw material is improved, the processing time is shortened, the heat utilization rate is improved, and the energy waste is effectively reduced.

3. The heat control mechanism is arranged, the rotating vertical shaft is driven to rotate slowly by the control motor, the driving convex blocks are driven to rotate by the driving arc blocks in the rotating process of the rotating vertical shaft, the driving convex blocks in the mounting frame can be sequentially stirred from bottom to top due to the unique distribution structure of the driving arc blocks, so that the heat preservation blades are sequentially opened from bottom to top, and meanwhile, the graphite heating strips are gradually lifted upwards by reversing the driving rod, so that the heat in the quartz crucible is dissipated outwards from the opening of the heat preservation blades, and the crystal growth process of the polycrystalline silicon raw material is optimized;

through the mode that the active control heat preservation blade opened and shut, make quartz crucible's heat upwards give off in proper order from the bottom, and then long brilliant stage forms vertical ascending temperature zone in the ingot furnace, has ensured that polycrystalline silicon can follow from upwards going on slowly at long brilliant in-process, the effectual long brilliant quality of polycrystalline silicon that has improved.

4. The low-temperature cooling liquid in the main cooling liquid tank is conveyed into the upper annular pipe through the upper circulating liquid pipe and then enters the cooling thin pipe, the cooling liquid flowing through the interior of the cooling thin pipe enters the backflow thin pipe through the connecting square pipe after absorbing heat, and enters the top cooler through the lower annular pipe and the lower circulating pipe, and the high-temperature cooling liquid flows into the main cooling liquid tank again after being cooled by the top cooler, so that the cooling process in the ingot furnace is optimized;

through the control to the cooling liquid flow direction in the cooling tubule, make the cooling liquid top-down in the cooling tubule flow through the side of heat preservation blade, and then carry out effectual absorption to the heat that passes the heat preservation blade, guaranteed that the inside stable temperature difference area that forms of ingot furnace has optimized heat control mechanism's use.

5. The bottom uniform cooling mechanism is arranged, low-temperature cooling liquid in the auxiliary cooling liquid tank is guided into the liquid inlet connecting pipe through the liquid inlet guide pipe, so that the cooling liquid is simultaneously introduced into the outer cooling pipe and the inner cooling pipe, the heat on the heat conducting plate is absorbed when the cooling liquid flows through the outer cooling pipe and the inner cooling pipe, uniform cooling on the bottom of the quartz crucible is further realized, the cooling liquid in the outer cooling pipe and the inner cooling pipe is guided into the side cooler through the liquid outlet connecting pipe and the liquid outlet guide pipe, and the high-temperature cooling liquid enters the auxiliary cooling liquid tank again after being cooled by the side cooler, so that the cooling and crystallization process of polycrystalline silicon in the quartz crucible is improved;

through the inlet end with outer cooling tube and interior cooling tube set up respectively with the limit portion and the middle part of heat-conducting plate, make microthermal coolant liquid can follow heat-conducting plate limit portion and middle part and enter into outer cooling tube and interior cooling tube simultaneously, in the attribute of the quick heat conduction diffusion of cooperation heat-conducting plate, effectually avoided the quartz crucible bottom cooling process at the horizontal direction formation temperature difference area, further ensured the quality of polycrystalline silicon through temperature control.

6. The vibration isolation buffer mechanism is arranged, vibration isolation is carried out on the mounting seat and the connecting disc through the rubber heat insulation pad, vibration isolation is carried out on the supporting barrel and the supporting column through the rubber vibration isolation sleeve, the stability of the supporting table is ensured, and through double isolation of the rubber heat insulation pad and the rubber vibration isolation sleeve, external vibration is effectively prevented from being transmitted to the quartz crucible, so that the influence of external vibration on the crystallization process of polycrystalline silicon is greatly reduced, and the quality of the polycrystalline silicon is improved through the anti-interference performance of the ingot furnace.

7. The feeding mechanism is arranged, the supporting inclined frame and the control rod are lifted through the hydraulic lifting rod, so that the quartz crucible filled with raw materials is lifted, after the quartz crucible is lifted, the driving block is driven to rotate under the action of the driving motor, so that the driving block and parts at the top of the driving block are driven to move, the quartz crucible is rapidly moved to the top of the supporting table, and the feeding process of the ingot furnace is optimized;

meanwhile, the position of the connecting support is fixed relative to the ingot furnace, so that the aligning and positioning time is greatly reduced in the transportation process of the quartz crucible, and the transportation efficiency of the quartz crucible is effectively improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural view of an exhaust treatment mechanism according to the present invention;

FIG. 3 is a schematic view of a drain valve mounting structure of the present invention;

FIG. 4 is a schematic view of a heating jacket installation configuration of the present invention;

FIG. 5 is a schematic structural view of the present invention;

FIG. 6 is a schematic view of the upper furnace body installation perspective structure of the present invention;

FIG. 7 is a schematic view of the internal structure of the upper furnace body of the present invention;

FIG. 8 is a schematic view of the mounting rail mounting arrangement of the present invention;

FIG. 9 is a schematic view of the heating control mechanism of the present invention;

FIG. 10 is a schematic view of the heat control mechanism of the present invention;

FIG. 11 is a schematic view of the heat shield mounting structure of the present invention;

FIG. 12 is a schematic view of the driving lug mounting structure of the present invention;

FIG. 13 is a schematic view of a drive arc block mounting arrangement of the present invention;

FIG. 14 is a schematic view of the vibration isolation and cushioning mechanism of the present invention;

FIG. 15 is a schematic structural view of the bottom uniform cooling mechanism of the present invention;

fig. 16 is a schematic view of the structure of the feeding mechanism of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example (b):

as shown in fig. 1 to 16, an exhaust gas treatment mechanism 12 is provided outside the upper furnace body 2;

the tail gas treatment mechanism 12 comprises a heat preservation sleeve 1201, an air inlet vertical pipe 1202, a circulating air pump 1203, a front washing air tank 1204, a rear washing air tank 1205, a front three-way valve 1206, a lower exhaust pipe 1207, an upper exhaust pipe 1208, a lower air guide pipe 1209, a spiral circulating pipe 1210, an upper exhaust pipe 1211, a middle air guide pipe 1212, a distribution square pipe 1213, a drying barrel 1214, a middle three-way valve 1215, an upper air guide pipe 1216, a heating sleeve 1217, a rear three-way valve 1218, a control valve 1219, a side air guide pipe 1220, a sealing valve 1221, an air storage barrel 1222, a liquid adding port 1223 and a liquid discharging valve 1224;

the heat insulation device comprises an upper furnace body 2, a heat insulation sleeve 1201 is fixedly installed on the outer side of the upper furnace body 2, the top end of the upper furnace body 2 is connected with an air inlet vertical pipe 1202, an inlet of the air inlet vertical pipe 1202 is located at the top of the outer side of the upper furnace body 2, an outlet of the air inlet vertical pipe 1202 is located at the bottom of a heat insulation board 5, the top end of the air inlet vertical pipe 1202 is connected to the output end of the bottom of a rear three-way valve 1218, a circulating air pump 1203 is fixedly connected to the fixed bottom of one side of the heat insulation sleeve 1201, the input end of the circulating air pump 1203 is electrically connected with the output end of commercial power, a front gas washing box 1204 containing ammonia solution of cuprous chloride is welded in the middle of the other side of the heat insulation sleeve 1201, and a rear gas washing box 1205 containing distilled water is welded at the position, corresponding to the side of the front gas washing box 1204, on the other side of the heat insulation sleeve 1201;

one end of a circulating air pump 1203 is fixedly connected to an output end of a front three-way valve 1206 through a pipeline, an input end of the bottom of the front three-way valve 1206 is communicated with the bottom of the inner side of an upper furnace body 2 through a lower exhaust pipe 1207, an input end of the top of the front three-way valve 1206 is communicated with the bottom of a heat-insulating board 5 at the top of the inner side of the upper furnace body 2 through an upper exhaust pipe 1208, the other end of the circulating air pump 1203 is fixedly connected with a lower air guide pipe 1209, one end of the lower air guide pipe 1209 is connected with a spiral circulating pipe 1210 which is positioned inside a heat-insulating sleeve 1201 and is coiled outside the upper furnace body 2, one end of the spiral circulating pipe 1210 is communicated below the liquid level inside a front air washing box 1204 through an upper exhaust pipe 1211, the top of the front air washing box 1204 is communicated below the liquid level inside a rear air washing box 1205 through a middle air guide pipe 1212, and the bottom ends of the upper exhaust pipe 1211 and the middle air guide pipe 1212 are fixedly connected with a distribution square pipe 1213;

one end of the top of the rear scrubbing air box 1205 is fixedly connected with a drying barrel 1214 for containing silica gel dry particles, the top end of the drying barrel 1214 is connected with the input end of the bottom of a middle three-way valve 1215 through a pipeline, the output end of the top of the middle three-way valve 1215 is fixedly connected with an upper air duct 1216, the middle part of the outer side of the upper air duct 1216 is fixedly provided with a heating jacket 1217 with an internal heating wire, one side of the upper air duct 1216 is connected with the input end of one side of a rear three-way valve 1218, and the input end of the top of the rear three-way valve 1218 is fixedly connected with a control valve 1219;

the output end of one side of the middle three-way valve 1215 is fixedly connected with a side air guide pipe 1220, one end of the bottom of the side air guide pipe 1220 is fixedly connected with a sealing valve 1221, and the bottom end of the sealing valve 1221 is fixedly connected with an air storage barrel 1222;

liquid adding ports 1223 are formed in one corner of the tops of the front air washing tank 1204 and the rear air washing tank 1205, liquid discharging valves 1224 are fixedly connected to the middle portions of the bottoms of the front air washing tank 1204 and the rear air washing tank 1205, only the lower exhaust pipe 1207 is communicated with the circulating air pump 1203 through the front three-way valve 1206, mixed gas in the ingot furnace is pumped out from the bottom under the action of the circulating air pump 1203 and is guided into the spiral circulating pipe 1210 through the lower exhaust pipe 1209, and heat preservation is performed on the outer side of the ingot furnace through preheating of the discharged gas under the action of the spiral circulating pipe 1210 and the heat preservation sleeve 1201, so that waste of heat is effectively avoided, and the utilization rate of energy is improved;

carbon monoxide in the mixed gas is removed through the ammonia solution of cuprous chloride in the front gas washing tank 1204, ammonia gas newly added in the mixed gas is removed through the absorption of distilled water in the rear gas washing tank 1205, and water vapor in the mixed gas is adsorbed through the drying barrel 1214, so that the influence of carbon monoxide generated in the ingot furnace on the quality of a final silicon ingot in the molten silicon liquid is effectively avoided, the influence of carbon monoxide inhalation of operators on life safety is prevented, and the processing safety of the ingot furnace is improved;

the gas exhausted from the drying barrel 1214 is reintroduced into the ingot furnace for circulation through the rear three-way valve 1218 and the air inlet vertical pipe 1202 by the upper air duct 1216, and is heated by the heating jacket 1217 when the gas passes through the upper air duct 1216, so that the gas is ensured to have higher temperature before entering the ingot furnace, the influence of gas circulation on the internal temperature of the ingot furnace is reduced, and the use process of the tail gas treatment mechanism 12 is optimized;

external air enters from the bottom of the ingot furnace through the circulating air pump 1203, meanwhile, residual gas in the ingot furnace is extracted from the top through the upper extraction pipe 1208, and the gas is filtered and dried and then enters the gas storage barrel 1222 through the side gas guide pipe 1220 to be stored, so that the leakage of argon and other gases serving as protective gas in the interior after the furnace is opened is effectively avoided, the tail gas treatment capacity of the ingot furnace is further improved, and the environmental protection performance of the ingot furnace is improved;

the top end of the inner side of the mounting bracket 1 is fixedly connected with an upper furnace body 2, the bottom end of the inner side of the mounting bracket 1 is movably connected with a lower furnace body 3 through a lifting mechanism at a position corresponding to the bottom of the upper furnace body 2, the top of the inner side of the upper furnace body 2 is fixedly connected with a mounting plate 4, a mounting cavity is left between the mounting plate 4 and the top end of the inner side of the upper furnace body 2, the bottom end of the mounting plate 4 is fixedly connected with a heat-insulating plate 5, and a graphite heater is arranged in the middle of the bottom end of the heat-insulating plate 5;

a heating control mechanism 6 and a heat control mechanism 7 are sequentially arranged in the upper furnace body 2 from inside to outside, a vibration isolation buffer mechanism 8 and a bottom uniform cooling mechanism 10 are sequentially arranged in the lower furnace body 3 from bottom to top, and a quartz crucible 9 is arranged in the middle of the inner side of the upper furnace body 2;

the heating control mechanism 6 comprises a fixed mounting tube 601, a mounting cross rod 602, a connecting sliding tube 603, a limiting ring 604, a graphite heating strip 605, a supporting block 606, a driving rod 607, a traction disc 608 and a traction cable 609;

the bottom end of the mounting plate 4 is symmetrically and fixedly connected with fixed mounting tubes 601 corresponding to four sides of the quartz crucible 9, the bottom end of the fixed mounting tube 601 is fixedly connected with a mounting cross rod 602, the inner sides of the two ends of the corresponding mounting cross rod 602 inside the fixed mounting tube 601 are slidably connected with connecting sliding tubes 603, the top end of the connecting sliding tube 603 is fixedly connected with a limiting ring 604 corresponding to the top of the corresponding mounting cross rod 602 inside the fixed mounting tube 601, the bottom end of the inner side of the fixed mounting tube 601 is provided with a plurality of groups of connecting sliding tubes 603, the lengths of the plurality of groups of connecting sliding tubes 603 are unchanged, but the tube diameters are sequentially reduced from top to bottom, one side of the mounting cross rod 602 close to the quartz crucible 9 is fixedly connected with a graphite heating strip 605, the input end of the graphite heating strip 605 is electrically connected with the output end of commercial power, the two sides of the mounting cross rod 602 are provided with through holes corresponding to the mounting positions of the connecting sliding tubes 603, the diameter of the through holes is equal to the outer diameter of the connecting sliding tubes 603 positioned below the mounting cross rod 602 and is smaller than the inner diameter of the connecting sliding tubes 603 positioned above the mounting cross rod 602, the outer diameter of a limiting ring 604 at the top end of the connecting slide pipe 603 positioned below the mounting cross rod 602 is equal to the inner diameter of the connecting slide pipe 603 positioned above the mounting cross rod 602;

the top end of the mounting plate 4 is fixedly connected with a supporting block 606 corresponding to one side of the top end of the fixed mounting tube 601, the middle part of one side of the supporting block 606 is rotatably connected with a driving rod 607, two ends of the outer side of the driving rod 607 are fixedly connected with a traction disc 608 corresponding to the top end of the fixed mounting tube 601, the outer side of the traction disc 608 is spirally wound with a traction cable 609, the traction cable 609 passes through the fixed mounting tube 601 and the connecting sliding tube 603 and is fixedly connected with the top end of the mounting cross bar 602 positioned at the bottommost end, the driving rod 607 is driven by a motor arranged at one side of the supporting block 606, the number of heating elements is increased by a graphite heater at the top end of the quartz crucible 9 and a graphite heating strip 605 at the side surface of the top, the temperature rise at the top end of the inner side of the ingot furnace is quicker, the driving rod 607 at the top of the supporting block 606 drives the traction disc 608 to rotate, the traction cable 609 is extended by the rotation of the traction disc 608, so that the mounting cross bar 602 and the connecting sliding tube 603 fall in turn under the action of gravity, further, the downward extending speed of the high-temperature zone is accelerated, the temperature difference between the upper layer and the lower layer is reduced while the temperature gradient in the vertical direction in the ingot furnace is ensured, so that the polycrystalline silicon raw material in the middle layer and the polycrystalline silicon raw material in the upper layer in the quartz crucible 9 absorb heat at the same time, the high-temperature zone starts to descend through the descending of the graphite heating strip 605 after the polycrystalline silicon raw material in the upper layer is melted, the temperature of the polycrystalline silicon raw material in the middle layer rapidly exceeds the melting temperature to start melting, and the processing process of the ingot furnace is optimized;

the heat control mechanism 7 comprises a supporting column 701, a mounting frame 702, heat-insulating blades 703, a driving lug 704, a rotating vertical shaft 705, a driving arc block 706, a control motor 707, a connecting frame 708, a heat-insulating plate 709, a main cooling liquid tank 710, a circulating water pump 711, an upper annular pipe 712, a cooling thin pipe 713, a connecting square pipe 714, a backflow thin pipe 715, a lower annular pipe 716, a lower circulating pipe 717, a top cooler 718 and an upper circulating liquid pipe 719;

the bottom end of the mounting plate 4 is fixedly connected with supporting columns 701 corresponding to four corners of the top end of the quartz crucible 9, two sides of each supporting column 701 are fixedly connected with mounting frames 702, the inner sides of the mounting frames 702 are sequentially and rotatably connected with heat preservation blades 703, the positions of two ends of each heat preservation blade 703 corresponding to the inner parts of the square tubes on two sides of the mounting frame 702 are fixedly connected with driving lugs 704, the middle parts of the inner sides of the square tubes on two sides of the mounting frame 702 are rotatably connected with rotating vertical shafts 705, the positions of the outer sides of the rotating vertical shafts 705 corresponding to the bottoms of the driving lugs 704 are fixedly connected with driving arc blocks 706, the positions of the top ends of the rotating vertical shafts 705 corresponding to the top end of the mounting plate 4 are fixedly connected with control motors 707, the input ends of the control motors 707 are electrically connected with the output ends of commercial power, the rotating vertical shafts 705 are driven by the control motors 707 to slowly rotate, and the driving lugs 704 are driven by the driving arc blocks 706 in the rotating vertical shafts 705, due to the unique distribution structure of the driving arc-shaped blocks 706, the driving protrusions 704 in the mounting frame 702 can be sequentially shifted from bottom to top, so that the heat-insulating blades 703 are sequentially opened from bottom to top, and meanwhile, the driving rod 607 is reversed to gradually raise the graphite heating strips 605 upwards, so that heat in the quartz crucible 9 is emitted outwards from the opening of the heat-insulating blades 703, and the crystal growth process of the polycrystalline silicon raw material is optimized;

a connecting frame 708 is fixedly arranged on the inner side of the upper furnace body 2 corresponding to the outer side of the mounting frame 702, and heat insulation plates 709 are welded on the two sides of the connecting frame 708 corresponding to one side of the heat insulation blades 703;

a main cooling liquid tank 710 is placed on one side of the mounting bracket 1, a circulating water pump 711 is fixedly connected to the bottom of one side of the main cooling liquid tank 710 through a pipeline, the input end of the circulating water pump 711 is electrically connected with the output end of commercial power, one end of the circulating water pump 711 is fixedly connected with an upper circulating liquid pipe 719, one end of the upper circulating liquid pipe 719 is fixedly connected with an upper annular pipe 712 corresponding to the bottom end of the heat insulation plate 709, the top end of the upper annular pipe 712 is fixedly connected with a cooling tubule 713 corresponding to the inner side of the heat insulation plate 709, the top end of the cooling tubule 713 is fixedly connected with a connecting square pipe 714 corresponding to the top end of the heat insulation plate 709, a backflow tubule 715 is uniformly and fixedly connected to the bottom end of the backflow tubule 715 corresponding to the bottom of the upper annular pipe 712 through a pipeline, a lower circulating pipe 717 is fixedly connected to one side of the lower annular pipe 716 corresponding to the outer side of the upper furnace body 2, one end of the lower circulating pipe 717 is fixedly connected with a top cooler 718 corresponding to the top end of the main cooling liquid tank 710, one end of the top cooler 718 is connected to the main cooling liquid tank 710 through a pipeline, and the fixed mounting pipe 601, the support column 701 and the mounting rack 702 penetrate through the heat-insulating board 5 and are fixedly connected with the mounting plate 4;

the lengths of the plurality of driving arc-shaped blocks 706 are sequentially reduced from bottom to top, one end planes of the plurality of driving arc-shaped blocks 706 are kept flush, the top end plane of each driving arc-shaped block 706 is tangent to the side face of the corresponding driving bump 704 in the rotation process, the heat preservation blades 703 are in a closed state in the heating and melting process of the ingot furnace, low-temperature cooling liquid in the main cooling liquid tank 710 is conveyed into the upper annular pipe 712 through the upper circulating liquid pipe 719 and then enters the cooling thin pipe 713, the cooling liquid flowing through the inside of the cooling thin pipe 713 enters the backflow thin pipe 715 through the connecting square pipe 714 after absorbing heat, and enters the top cooler 718 through the lower annular pipe 716 and the lower circulating pipe 717, and high-temperature cooling liquid flows into the main cooling liquid tank 710 again after being cooled by the top cooler 718, so that the cooling process inside the ingot furnace is optimized;

by controlling the flow direction of the cooling liquid in the cooling tubules 713, the cooling liquid in the cooling tubules 713 flows through the side surfaces of the heat-insulating blades 703 from top to bottom, so that the heat penetrating through the heat-insulating blades 703 is effectively absorbed, a stable temperature difference zone is formed in the ingot furnace, and the use process of the heat control mechanism 7 is optimized;

the vibration isolation buffer mechanism 8 comprises a mounting seat 801, a rubber heat insulation pad 802, a connecting disc 803, a supporting cylinder 804, a rubber vibration isolation sleeve 805, a supporting cylinder 806 and a supporting table 807;

the bottom end of the inner side of the lower furnace body 3 is uniformly and fixedly connected with a mounting seat 801, the top end of the mounting seat 801 is bonded with a rubber heat insulation pad 802, the bottom end of the rubber heat insulation pad 802 is fixedly connected with a connecting disc 803 through a bolt, the top end of the connecting disc 803 is welded with a supporting cylinder 804, the inner side of the supporting cylinder 804 is bonded with a rubber vibration isolation sleeve 805, the inner side of the rubber vibration isolation sleeve 805 is fixedly connected with a supporting cylinder 806, the top end of the supporting cylinder 806 is fixedly connected with a supporting platform 807, the outer side of the supporting cylinder 806 is tightly attached to the inner side of the rubber vibration isolation sleeve 805, a quartz crucible 9 is placed on the top of the supporting platform 807, the mounting seat 801 and the connecting disc 803 are vibration isolated through the rubber heat insulation pad 802, the supporting cylinder 804 and the supporting cylinder 806 are vibration isolated through the rubber vibration isolation sleeve 805, the stability of the supporting platform is ensured, and the external vibration is effectively prevented from being transmitted to the quartz crucible 9 through the double isolation of the rubber heat insulation pad 802 and the rubber vibration isolation sleeve 805, therefore, the influence of external vibration on the polycrystalline silicon crystallization process is greatly reduced, and the quality of the polycrystalline silicon is improved by improving the anti-interference performance of the ingot furnace;

the top of the support table 807 is provided with a bottom uniform cooling mechanism 10;

the bottom uniform cooling mechanism 10 comprises a heat conducting plate 1001, an outer cooling pipe 1002, an inner cooling pipe 1003, an auxiliary cooling liquid tank 1004, a high-speed pump 1005, a liquid inlet conduit 1006, a liquid inlet connecting pipe 1007, a liquid outlet connecting pipe 1008, a liquid outlet conduit 1009 and a side cooler 1010;

a heat conducting plate 1001 is fixedly connected to the inner side of the top end of the supporting table 807, an outer cooling pipe 1002 and an inner cooling pipe 1003 are alternately installed at the bottom end of the heat conducting plate 1001, an auxiliary cooling liquid tank 1004 is placed on the other side of the mounting support 1, one end of the auxiliary cooling liquid tank 1004 is fixedly connected with a high-speed pump 1005 through a pipeline, the input end of the high-speed pump 1005 is electrically connected with the output end of a mains supply, one end of the high-speed pump 1005 is fixedly connected with a liquid inlet conduit 1006, one end of the liquid inlet conduit 1006 is fixedly connected with a liquid inlet connecting pipe 1007 at the position corresponding to the bottom of the heat conducting plate 1001, the two ends of the liquid inlet connecting pipe 1007 are respectively fixedly connected with the liquid inlet ends of the outer cooling pipe 1002 and the inner cooling pipe 1003, the liquid outlet ends of the outer cooling pipe 1002 and the inner cooling pipe 1003 are both connected to the top of a liquid outlet connecting pipe 1008, one side of the liquid outlet connecting pipe 1008 is fixedly connected with a liquid outlet pipe 1009, one end of the side cooler 1010 is fixedly connected to one side of the auxiliary cooling liquid tank 1004 through a pipeline, the outer cooling pipe 1002 and the inner cooling pipe 1003 are both in a scroll shape, liquid inlet ends of the outer cooling pipe 1002 and the inner cooling pipe 1003 are respectively positioned at the edge part and the middle part of the heat conducting plate 1001, low-temperature cooling liquid in the auxiliary cooling liquid box 1004 is led into the liquid inlet connecting pipe 1007 through the liquid inlet guide pipe 1006, then the cooling liquid is led into the outer cooling pipe 1002 and the inner cooling pipe 1003 simultaneously, heat on the heat conducting plate 1001 is absorbed when the cooling liquid flows through the outer cooling pipe 1002 and the inner cooling pipe 1003, uniform cooling on the bottom of the quartz crucible 9 is further achieved, the cooling liquid in the outer cooling pipe 1002 and the inner cooling pipe 1003 is led into the side cooler 1010 through the liquid outlet connecting pipe 1008 and the liquid outlet guide pipe 1009, the high-temperature cooling liquid is cooled by the side cooler 1010 and then enters the auxiliary cooling liquid box 1004 again, and the cooling crystallization process of polycrystalline silicon in the quartz crucible 9 is improved;

the liquid inlet ends of the outer cooling pipe 1002 and the inner cooling pipe 1003 are respectively arranged at the edge part and the middle part of the heat conducting plate 1001, so that low-temperature cooling liquid can simultaneously enter the outer cooling pipe 1002 and the inner cooling pipe 1003 from the edge part and the middle part of the heat conducting plate 1001, and a temperature difference zone is effectively prevented from being formed in the horizontal direction in the cooling process of the bottom of the quartz crucible 9 by matching with the property of rapid heat conduction and diffusion of the heat conducting plate 1001, and the quality of polycrystalline silicon is further ensured by temperature control;

a feeding mechanism 11 is arranged at the bottom of one end of the mounting bracket 1;

the feeding mechanism 11 comprises a connecting bracket 1101, a connecting box 1102, a driving lead screw 1103, a driving motor 1104, a driving block 1105, a hydraulic lifting rod 1106, a supporting inclined frame 1107, a control rod 1108 and a supporting platform 1109;

the bottom of one end of the mounting bracket 1 is welded with a connecting bracket 1101, both sides of the connecting bracket 1101 are welded with connecting boxes 1102, the middle part of the inner side of each connecting box 1102 is rotatably connected with a driving screw 1103, one end of each driving screw 1103 is fixedly connected with a driving motor 1104 at a position corresponding to one end of each connecting box 1102, the input end of each driving motor 1104 is electrically connected with the output end of a commercial power, the outer side of each driving screw 1103 is movably connected with a driving block 1105 at a position corresponding to the inner side of each connecting box 1102, the top ends of the driving blocks 1105 are symmetrically and fixedly connected with hydraulic lifting rods 1106, the top ends of the hydraulic lifting rods 1106 are fixedly connected with supporting inclined frames 1107, the top ends of the supporting inclined frames 1107 are fixedly connected with control rods 1108, the middle part of one side of the top end of each connecting bracket 1101 is welded with a supporting platform 1109, the side surfaces and the bottom surfaces of the driving blocks 1105 are tightly attached to the inner walls of the connecting boxes 1102, the driving motors 1104 are fixedly connected with the connecting boxes 1102, and the supporting inclined frames and the control rods 1108 are lifted up through the hydraulic lifting rods 1106, then the quartz crucible 9 filled with the raw materials is lifted, after the quartz crucible 9 is lifted, the driving block 1105 is driven to rotate under the action of the driving motor 1104, and then the driving block 1105 and the parts at the top of the driving block 1105 are driven to move, so that the quartz crucible 9 is rapidly moved to the top of the supporting platform 807, and the feeding process of the ingot furnace is optimized;

meanwhile, the position of the connecting support 1101 is fixed relative to the ingot furnace, so that the aligning and positioning time is greatly reduced in the transportation process of the quartz crucible 9, and the transportation efficiency of the quartz crucible 9 is effectively improved.

The working principle and the using process of the invention are as follows: in the practical application process, before the raw material of the polycrystalline silicon is melted, the quartz crucible 9 containing the raw material needs to be transported to the top of the supporting platform 807, if a large amount of position adjustment time is spent by a common transporting mechanism, the empty quartz crucible 9 is placed on the supporting platform 1109, then the processing raw material is sequentially added into the quartz crucible 9, after the raw material addition is completed, the supporting inclined frame 1107 and the control rod 1108 are lifted through the hydraulic lifting rod 1106, so that the quartz crucible 9 filled with the raw material is lifted, after the quartz crucible 9 is lifted, the driving block 1105 is driven to rotate under the action of the driving motor 1104, and then the driving block 1105 and the components at the top of the driving block are driven to move, so that the quartz crucible 9 is rapidly moved to the top of the supporting platform 807, and the feeding process of the ingot furnace is optimized;

meanwhile, the position of the connecting bracket 1101 is fixed relative to the ingot furnace, so that the aligning and positioning time is greatly reduced in the transportation process of the quartz crucible 9, and the transportation efficiency of the quartz crucible 9 is effectively improved;

in the process of heating the polycrystalline silicon raw material in the quartz crucible 9 by the traditional ingot furnace, because the graphite heater is positioned at the top of the ingot furnace, the polycrystalline silicon raw material at the top of the quartz crucible 9 is firstly melted after absorbing enough heat along with the increase of the heating time, and the polycrystalline silicon raw material at the lower layer in the quartz crucible 9 can not obtain enough heat, so that the polycrystalline silicon raw material can continuously keep solid state, only along with the continuous increase of the heating time, the temperature at the top of the ingot furnace continuously rises, so that a high-temperature zone in the ingot furnace gradually extends downwards, at the moment, the polycrystalline silicon raw material at the lower layer in the quartz crucible 9 can gradually obtain enough heat to be arranged and melted, thereby causing a great waste of heat in the ingot furnace, in the using process of the novel ingot furnace, the number of heating elements is increased by the graphite heater at the top of the quartz crucible 9 and the graphite heating strips 605 at the side surface of the top, the temperature at the top end of the inner side of the ingot furnace is heated more quickly, after the polycrystalline silicon raw material at the upper layer of the quartz crucible 9 is melted, the power of the graphite heater is reduced, meanwhile, the driving rod 607 at the top of the supporting block 606 drives the traction disc 608 to rotate, the traction cable 609 is extended through the rotation of the traction disc 608, the installation cross rod 602 and the connection sliding pipe 603 sequentially fall under the action of gravity, the plurality of connection sliding pipes 603 can keep equal distance when falling to the lowest point through the action of the limiting ring 604, the graphite heating strip 605 is driven to fall together with the falling of the installation cross rod 602, the downward extending speed of a high temperature zone is accelerated, the temperature difference of the upper layer and the lower layer is reduced while the temperature gradient is formed in the vertical direction in the ingot furnace, the polycrystalline silicon raw material at the middle layer and the polycrystalline silicon raw material at the upper layer in the quartz crucible 9 can absorb heat at the same time, but the high temperature zone is positioned at the upper layer, therefore, the temperature of the middle-layer polycrystalline silicon raw material is always below the melting temperature and is not melted with the upper-layer polycrystalline silicon raw material at the same time, the high-temperature zone starts to descend through the descending of the graphite heating strip 605 after the upper-layer polycrystalline silicon raw material is melted, the temperature of the middle-layer polycrystalline silicon raw material is enabled to quickly exceed the melting temperature to start melting, and the processing process of the ingot furnace is optimized;

by actively controlling the position of the heat source, the phenomenon of uneven heat distribution caused by heat gathering at the top of the ingot furnace in the heating process is avoided, the melting speed of the polycrystalline silicon raw material is improved, the processing time is shortened, the heat utilization rate is improved, and the energy waste is effectively reduced;

after one end of heating and melting of the polycrystalline silicon raw material is finished, the polycrystalline silicon raw material starts to enter the next processing stage for crystal growth, a temperature difference zone in the vertical direction is also required to be formed in the ingot furnace in the crystal growth process so as to ensure that the polycrystalline silicon raw material in the quartz crucible 9 is oriented to grow crystals from the bottom to the top, after the heating and melting are finished, the rotating vertical shaft 705 is driven by the control motor 707 to rotate slowly, the driving convex block 704 is driven to rotate by the driving arc block 706 in the rotating process of the rotating vertical shaft 705, the driving convex block 704 in the mounting frame 702 can be sequentially stirred from bottom to top due to the unique distribution structure of the driving arc block 706, so that the heat-preserving blades 703 are sequentially opened from bottom to top, and the driving rod 607 is reversely rotated to gradually lift the graphite heating strips 605 so that the heat in the quartz crucible 9 is emitted from the opening of the heat-preserving blades 703 to the outside, the crystal growth process of the polycrystalline silicon raw material is optimized;

by actively controlling the opening and closing of the heat-insulating blades 703, the heat of the quartz crucible 9 can be sequentially dissipated from the bottom to the top, so that a vertical and upward temperature zone is formed in the ingot furnace in the crystal growth stage, the polycrystalline silicon can be slowly grown from bottom to top in the crystal growth process, and the crystal growth quality of the polycrystalline silicon is effectively improved;

after the heat of the quartz crucible 9 is radiated outwards through the heat-insulating blades 703, if the heat cannot be taken away from the interior of the ingot furnace in time, the heat can be reflected back to the quartz crucible 9 under the action of the inner wall of the upper furnace body 2, so that a temperature difference zone cannot be effectively formed in the ingot furnace, under the action of the circulating water pump 711, the low-temperature cooling liquid in the main cooling liquid tank 710 is conveyed into the upper annular pipe 712 through the upper circulating liquid pipe 719 and then enters the cooling thin pipes 713, the cooling liquid flowing through the interior of the cooling thin pipes 713 enters the backflow thin pipes 715 through the connecting square pipes 714 after absorbing the heat, and enters the top cooler 718 through the lower annular pipe 716 and the lower circulating pipe 717, and the high-temperature cooling liquid flows into the main cooling liquid tank 710 again after being cooled by the top cooler 718, so that the cooling process in the interior of the ingot furnace is optimized;

in the stage of cooling and crystal growth of polycrystalline silicon, because the quartz crucible 9 radiates heat outwards through the side face, a large temperature difference is easy to occur between the inside and the outside of silicon liquid in the quartz crucible 9, so that heterogeneous nucleation of the silicon liquid on the wall of the quartz crucible 9 is caused, polycrystalline silicon grows into fresh and upward grains, the high-speed pump 1005 is started when the bottommost heat-insulating blade 703 is opened, low-temperature cooling liquid in the auxiliary cooling liquid tank 1004 is led into the liquid inlet connecting pipe 1007 through the liquid inlet conduit 1006, then the cooling liquid is led into the outer cooling pipe 1002 and the inner cooling pipe 1003 simultaneously, the heat on the heat conducting plate 1001 is absorbed when the cooling liquid flows through the outer cooling pipe 1002 and the inner cooling pipe 1003, so that the bottom of the quartz crucible 9 is uniformly cooled, the cooling liquid in the outer cooling pipe 1002 and the inner cooling pipe 1003 is led into the side cooler 1010 through the liquid outlet connecting pipe 1008 and the conduit 1009, the high-temperature cooling liquid reenters the auxiliary cooling liquid tank 1004 after being cooled by the side cooler 1010, the circulation of the cooling liquid is completed, and the cooling crystallization process of the polycrystalline silicon in the quartz crucible 9 is improved;

in the crystal growth process of polycrystalline silicon, if the interference of external irregular mechanical vibration is received, the crystal grain growth direction can be deviated, the quality of the whole crystal ingot is reduced, the rubber heat insulation pad 802 is used for carrying out vibration isolation on the mounting seat 801 and the connecting disc 803, the rubber vibration isolation sleeve 805 is used for carrying out vibration isolation on the supporting cylinder 804 and the supporting cylinder 806, the stability of the supporting table 807 is ensured, the external vibration is effectively prevented from being transmitted to the quartz crucible 9 through the double isolation of the rubber heat insulation pad 802 and the rubber vibration isolation sleeve 805, the influence of the external vibration on the polycrystalline silicon crystallization process is greatly reduced, and the quality of the polycrystalline silicon is improved through improving the anti-interference performance of the ingot furnace;

in the process of processing by using the ingot furnace, argon is required to be introduced into the ingot furnace through the rear three-way valve and the control valve to serve as protective gas, carbon monoxide is generated in the heating process of polycrystalline silicon, if the carbon monoxide enters molten silicon liquid, the quality of a final silicon ingot is influenced, if the carbon monoxide is leaked, the carbon monoxide is also influenced by the life safety of an operator, and when the carbon monoxide content in the ingot furnace is excessively accumulated, the risk of explosion is caused more seriously, so that tail gas of the polycrystalline silicon ingot furnace needs to be treated in the process of heating the polycrystalline silicon by the ingot furnace, after the ingot furnace is closed and is heated by introducing argon, only the lower exhaust pipe is communicated with the circulating gas pump through the front three-way valve, mixed gas in the ingot furnace is extracted from the bottom under the action of the circulating gas pump, and the mixed gas is introduced into the spiral circulating gas pipe through the lower gas guide pipe, the outer side of the ingot furnace is insulated by preheating the exhaust gas through the spiral circulating pipe and the insulation sleeve, so that the waste of heat is effectively avoided, and the utilization rate of energy is improved;

after the mixed gas passes through the spiral circulating pipe, the mixed gas sequentially passes through the front gas washing tank, the rear gas washing tank and the drying barrel under the action of the upper exhaust pipe and the upper gas guide pipe, carbon monoxide in the mixed gas is removed through an ammonia solution of cuprous chloride in the front gas washing tank, ammonia gas newly added into the mixed gas is removed through absorption of distilled water in the rear gas washing tank, and water vapor in the mixed gas is adsorbed through the drying barrel, so that the influence of carbon monoxide generated in the ingot furnace on the quality of a final silicon ingot in molten silicon liquid is effectively avoided, the influence of carbon monoxide inhalation of operators on life safety is prevented, and the processing safety of the ingot furnace is improved;

in the stage of heating the polycrystalline silicon by the ingot furnace, only the drying barrel is communicated with the upper gas guide pipe through the middle three-way valve, gas discharged from the drying barrel is reintroduced into the ingot furnace through the rear three-way valve and the gas inlet vertical pipe through the upper gas guide pipe for circulation, and meanwhile, when the gas passes through the upper gas guide pipe, the gas is heated through the heating sleeve, so that the gas is ensured to have higher temperature before entering the ingot furnace, the influence of gas circulation on the internal temperature of the ingot furnace is reduced, and the use process of the tail gas treatment mechanism is optimized;

before polycrystalline silicon processing is completed and is about to open the furnace, only make last exhaust tube and circulating air pump switch-on through preceding three-way valve, only make drying bucket and side air guide pipe switch-on through well three-way valve, make external air get into from the ingot furnace bottom through circulating air pump, simultaneously with remaining gas in the ingot furnace through last exhaust tube from the top take out, and make these gases pass through after filtering and drying and store in getting into the gas storage bucket via side air guide pipe, effectual inside argon and other gas leakage as protective gas after having avoided opening the furnace, the tail gas treatment ability of ingot furnace has further been improved, the environmental protection performance of ingot furnace has been improved.

Claims

1. The utility model provides an ingot furnace with tail gas processing function, includes installing support (1), goes up furnace body (2), heating control mechanism (6), heat control mechanism (7), vibration isolation buffer gear (8), bottom even cooling body (10), feed mechanism (11) and tail gas processing mechanism (12), its characterized in that: a tail gas treatment mechanism (12) is arranged on the outer side of the upper furnace body (2);

the tail gas treatment mechanism (12) comprises a heat insulation sleeve (1201), an air inlet vertical pipe (1202), a circulating air pump (1203), a front air washing tank (1204), a rear air washing tank (1205), a front three-way valve (1206), a lower exhaust pipe (1207), an upper exhaust pipe (1208), a lower air guide pipe (1209), a spiral circulating pipe (1210), an upper exhaust pipe (1211), a middle air guide pipe (1212), a distribution square pipe (1213), a drying barrel (1214), a middle three-way valve (1215), an upper air guide pipe (1216), a heating sleeve (1217), a rear three-way valve (1218), a control valve (1219), a side air guide pipe (1220), a sealing valve (1221), an air storage barrel (1222), a liquid adding port (1223) and a liquid discharging valve (1224);

the heat insulation device is characterized in that a heat insulation sleeve (1201) is fixedly installed on the outer side of the upper furnace body (2), the top end of the upper furnace body (2) is connected with an air inlet vertical pipe (1202) of which an inlet is positioned at the top of the outer side of the upper furnace body (2) and an outlet is positioned at the bottom end of a heat insulation plate (5), the top end of the air inlet vertical pipe (1202) is connected to the output end of the bottom of a rear three-way valve (1218), a circulating air pump (1203) is fixedly connected to the bottom of one side of the heat insulation sleeve (1201), the input end of the circulating air pump (1203) is electrically connected with the output end of commercial power, a front gas washing tank (1204) containing an ammonia solution of cuprous chloride is welded in the middle of the other side of the heat insulation sleeve (1201), and a rear gas washing tank (1205) containing distilled water is welded at the position, corresponding to the side edge of the front gas washing tank (1204), of the other side of the heat insulation sleeve (1201);

one end of the circulating air pump (1203) is fixedly connected to an output end of a front three-way valve (1206) through a pipeline, a bottom input end of the front three-way valve (1206) is communicated with the bottom of the inner side of the upper furnace body (2) through a lower exhaust pipe (1207), a top input end of the front three-way valve (1206) is communicated with the bottom position of a top heat-insulating and heat-insulating plate (5) at the inner side of the upper furnace body (2) through an upper exhaust pipe (1208), the other end of the circulating air pump (1203) is fixedly connected with a lower air guide pipe (1209), one end of the lower air guide pipe (1209) is connected with a spiral circulating pipe (1210) which is positioned inside the heat-insulating sleeve (1201) and is coiled outside the upper furnace body (2), one end of the spiral circulating pipe (1210) is communicated below the liquid level inside the front air washing tank (1204) through an upper exhaust pipe (1211), and the top of the front air washing tank (1204) is communicated below the liquid level inside the rear air washing tank (1205) through a middle air guide pipe (1212), the bottom ends of the upper exhaust pipe (1211) and the middle air duct (1212) are fixedly connected with a distribution square pipe (1213);

one end of the top of the rear gas washing box (1205) is fixedly connected with a drying barrel (1214) for containing silica gel dry particles, the top end of the drying barrel (1214) is connected with the input end of the bottom of a middle three-way valve (1215) through a pipeline, the output end of the top of the middle three-way valve (1215) is fixedly connected with an upper air duct (1216), the middle part of the outer side of the upper air duct (1216) is fixedly provided with a heating jacket (1217) with an electric heating wire arranged inside, one side of the upper air duct (1216) is connected to the input end of one side of a rear three-way valve (1218), and the input end of the top of the rear three-way valve (1218) is fixedly connected with a control valve (1219);

the output end of one side of the middle three-way valve (1215) is fixedly connected with a side air guide pipe (1220), one end of the bottom of the side air guide pipe (1220) is fixedly connected with a sealing valve (1221), and the bottom end of the sealing valve (1221) is fixedly connected with an air storage barrel (1222);

liquid adding ports (1223) are formed in one corner of the top of each of the front gas washing tank (1204) and the rear gas washing tank (1205), and liquid discharging valves (1224) are fixedly connected to the middle parts of the bottom ends of each of the front gas washing tank (1204) and the rear gas washing tank (1205);

an upper furnace body (2) is fixedly connected to the top end of the inner side of the mounting support (1), a lower furnace body (3) is movably connected to the position, corresponding to the bottom of the upper furnace body (2), of the bottom end of the inner side of the mounting support (1) through a lifting mechanism, a mounting plate (4) is fixedly connected to the top of the inner side of the upper furnace body (2), a mounting cavity is reserved between the mounting plate (4) and the top end of the inner side of the upper furnace body (2), and a heat-insulating plate (5) is fixedly connected to the bottom end of the mounting plate (4);

a heating control mechanism (6) and a heat control mechanism (7) are sequentially arranged inside the upper furnace body (2) from inside to outside, a vibration isolation buffer mechanism (8) and a bottom uniform cooling mechanism (10) are sequentially arranged inside the lower furnace body (3) from bottom to top, and a quartz crucible (9) is placed in the middle of the inner side of the upper furnace body (2);

the bottom of the mounting plate (4) is provided with a heating control mechanism (6);

the heating control mechanism (6) comprises a fixed mounting tube (601), a mounting cross rod (602), a connecting sliding tube (603), a limiting ring (604), a graphite heating strip (605), a supporting block (606), a driving rod (607), a traction disc (608) and a traction cable (609);

the bottom end of the mounting plate (4) is symmetrically and fixedly connected with fixed mounting tubes (601) corresponding to four side surfaces of the quartz crucible (9), the bottom end of the fixed installation pipe (601) is fixedly connected with an installation cross rod (602), the inner sides of the two ends of the fixed installation pipe (601) corresponding to the installation cross rod (602) are both connected with a connection sliding pipe (603) in a sliding way, the top end of the connecting sliding pipe (603) is fixedly connected with a limiting ring (604) corresponding to the top of the cross rod (602) arranged on the inner side of the fixed mounting pipe (601), a plurality of groups of connecting sliding tubes (603) are arranged at the bottom end of the inner side of the fixed mounting tube (601), the lengths of the plurality of groups of connecting sliding tubes (603) are unchanged, and the tube diameters are sequentially reduced from top to bottom, one side of the mounting cross rod (602) close to the quartz crucible (9) is fixedly connected with a graphite heating strip (605), and the input end of the graphite heating strip (605) is electrically connected with the output end of a mains supply;

a supporting block (606) is fixedly connected to the position, corresponding to one side of the top end of the fixed mounting pipe (601), of the top end of the mounting plate (4), a driving rod (607) is rotatably connected to the middle of one side of the supporting block (606), two ends of the outer side of the driving rod (607) are fixedly connected to the position, corresponding to the top end of the fixed mounting pipe (601), of the top end of the fixed mounting pipe (601), a traction disc (608) is fixedly connected to the outer side of the traction disc (608), and a traction cable (609) is spirally wound on the outer side of the traction disc (608);

the middle part of the bottom end of the heat insulation plate (5) is provided with a graphite heater;

through holes are formed in the two sides of the mounting cross rod (602) corresponding to the mounting positions of the connecting sliding tubes (603), the diameter of each through hole is equal to the outer diameter of the connecting sliding tube (603) below the mounting cross rod (602) and smaller than the inner diameter of the connecting sliding tube (603) above the mounting cross rod (602), and the outer diameter of a limiting ring (604) at the top end of the connecting sliding tube (603) below the mounting cross rod (602) is equal to the inner diameter of the connecting sliding tube (603) above the mounting cross rod (602);

the traction cable (609) penetrates through the fixed mounting pipe (601) and the connecting sliding pipe (603) to be fixedly connected with the top end of the mounting cross rod (602) at the bottommost end, and the driving rod (607) is driven by a motor mounted on one side of the supporting block (606).

2. The ingot furnace with the tail gas treatment function according to claim 1, wherein the heat control mechanism (7) comprises a support column (701), a mounting frame (702), heat preservation blades (703), a driving lug (704), a rotating vertical shaft (705), a driving arc-shaped block (706), a control motor (707), a connecting frame (708), a heat insulation plate (709), a main cooling liquid tank (710), a circulating water pump (711), an upper annular pipe (712), a cooling thin pipe (713), a connecting square pipe (714), a backflow thin pipe (715), a lower annular pipe (716), a lower circulating pipe (717), a top cooler (718) and an upper circulating liquid pipe (719);

the bottom end of the mounting plate (4) is fixedly connected with supporting columns (701) corresponding to four corners of the top end of the quartz crucible (9), the two sides of the supporting column (701) are fixedly connected with mounting frames (702), the inner sides of the mounting frames (702) are sequentially and rotatably connected with heat-insulating blades (703), the two ends of the heat-insulating blade (703) are fixedly connected with driving lugs (704) corresponding to the inner positions of square tubes at the two sides of the mounting rack (702), the middle part of the inner side of the square tube at both sides of the mounting rack (702) is rotatably connected with a rotating vertical shaft (705), a driving arc-shaped block (706) is fixedly connected at the position of the outer side of the rotating vertical shaft (705) corresponding to the bottom of the driving lug (704), a control motor (707) is fixedly connected to the position, corresponding to the top end of the mounting plate (4), of the top end of the rotating vertical shaft (705), and the input end of the control motor (707) is electrically connected with the output end of commercial power;

a connecting frame (708) is fixedly arranged at the position, corresponding to the outer side of the mounting frame (702), of the inner side of the upper furnace body (2), and heat insulation plates (709) are welded at the positions, corresponding to one sides of the heat insulation blades (703), of two sides of the connecting frame (708);

installing support (1) one side has been placed main cooling liquid case (710), pipeline fixedly connected with circulating water pump (711) is passed through to main cooling liquid case (710) one side bottom, the input of circulating water pump (711) and the output electric connection of commercial power, circulating water pump (711) one end fixedly connected with goes up circulating liquid pipe (719), go up circulating liquid pipe (719) one end and correspond heat insulating board (709) bottom position fixedly connected with and go up ring conduit (712), go up ring conduit (712) top and correspond heat insulating board (709) inboard position fixedly connected with cooling tubule (713), cooling tubule (713) top corresponds heat insulating board (709) top fixedly connected with side pipe (714), connecting side pipe (714) bottom corresponds even fixedly connected with backward flow tubule (715) of heat insulating board (709) position department, backward flow tubule (715) bottom corresponds upper ring conduit (712) bottom position department has lower ring conduit (716) One side of the lower annular pipe (716) is fixedly connected with a lower circulating pipe (717) corresponding to the outer side of the upper furnace body (2), one end of the lower circulating pipe (717) is fixedly connected with a top cooler (718) corresponding to the top end of the main cooling liquid tank (710), and one end of the top cooler (718) is connected to the main cooling liquid tank (710) through a pipeline;

the fixed mounting pipe (601), the supporting column (701) and the mounting rack (702) penetrate through the heat-insulating plate (5) and are fixedly connected with the mounting plate (4);

the lengths of the plurality of driving arc-shaped blocks (706) are sequentially reduced from bottom to top, one end planes of the plurality of driving arc-shaped blocks (706) are kept flush, the top end plane of each driving arc-shaped block (706) is tangent to the side face of each driving lug (704) in the rotating process, and the heat preservation blades (703) are in a closed state in the heating and melting process of the ingot furnace.

3. The ingot furnace with the tail gas treatment function according to claim 2, wherein the vibration isolation buffer mechanism (8) comprises a mounting base (801), a rubber heat insulation pad (802), a connecting disc (803), a supporting cylinder (804), a rubber vibration isolation sleeve (805), a supporting cylinder (806) and a supporting table (807);

the utility model discloses a furnace body (3) inboard bottom is even fixedly connected with mount pad (801) down, mount pad (801) top bonds there is rubber heat insulating mattress (802), bolt fixedly connected with connection pad (803) are passed through to rubber heat insulating mattress (802) bottom, the welding of connection pad (803) top has a support section of thick bamboo (804), a support section of thick bamboo (804) inboard bonds there is rubber vibration isolation cover (805), inboard fixedly connected with support cylinder (806) of rubber vibration isolation cover (805), support cylinder (806) top fixedly connected with brace table (807).

4. The ingot furnace with the tail gas treatment function of claim 3, wherein the outer side of the supporting cylinder (806) is tightly attached to the inner side of the rubber vibration isolation sleeve (805), and the quartz crucible (9) is placed on the top of the supporting platform (807).

5. The ingot furnace with the tail gas treatment function of claim 4, wherein the top of the supporting platform (807) is provided with a bottom uniform cooling mechanism (10);

the bottom uniform cooling mechanism (10) comprises a heat conducting plate (1001), an outer cooling pipe (1002), an inner cooling pipe (1003), an auxiliary cooling liquid box (1004), a high-speed pump (1005), a liquid inlet conduit (1006), a liquid inlet connecting pipe (1007), a liquid outlet connecting pipe (1008), a liquid outlet conduit (1009) and a side cooler (1010);

the heat conduction plate (1001) is fixedly connected with the inner side of the top end of the supporting table (807), the outer cooling pipe (1002) and the inner cooling pipe (1003) are alternately installed at the bottom end of the heat conduction plate (1001), the auxiliary cooling liquid tank (1004) is placed on the other side of the installing support (1), one end of the auxiliary cooling liquid tank (1004) is fixedly connected with a high-speed pump (1005) through a pipeline, the input end of the high-speed pump (1005) is electrically connected with the output end of a mains supply, one end of the high-speed pump (1005) is fixedly connected with a liquid inlet guide pipe (1006), one end of the liquid inlet guide pipe (1006) corresponds to the bottom position of the heat conduction plate (1001) and is fixedly connected with a liquid inlet connecting pipe (1007), the two ends of the liquid inlet connecting pipe (1007) are respectively fixedly connected with the liquid inlet ends of the outer cooling pipe (1002) and the inner cooling pipe (1003), and the liquid outlet ends of the outer cooling pipe (1002) and the inner cooling pipe (1003) are both connected to the top of the liquid outlet connecting pipe (1008), one side of the liquid outlet connecting pipe (1008) is fixedly connected with a liquid outlet guide pipe (1009), one end of the liquid outlet guide pipe (1009) is fixedly connected with a side cooler (1010), and one end of the side cooler (1010) is fixedly connected to one side of the auxiliary cooling liquid tank (1004) through a pipeline.

6. The ingot furnace with the tail gas treatment function according to claim 5, wherein the outer cooling pipe (1002) and the inner cooling pipe (1003) are in a spiral shape, and liquid inlet ends of the outer cooling pipe (1002) and the inner cooling pipe (1003) are respectively positioned at the edge part and the middle part of the heat conducting plate (1001).

7. The ingot furnace with the tail gas treatment function according to claim 1, wherein a feeding mechanism (11) is arranged at the bottom of one end of the mounting bracket (1);

the feeding mechanism (11) comprises a connecting bracket (1101), a connecting box (1102), a driving lead screw (1103), a driving motor (1104), a driving block (1105), a hydraulic lifting rod (1106), a supporting inclined frame (1107), a control rod (1108) and a supporting platform (1109);

the bottom of one end of the mounting bracket (1) is welded with a connecting bracket (1101), both sides of the connecting bracket (1101) are welded with connecting boxes (1102), the middle part of the inner side of the connecting box (1102) is rotationally connected with a driving lead screw (1103), one end of the driving lead screw (1103) is fixedly connected with a driving motor (1104) at the position corresponding to one end of the connecting box (1102), the input end of the driving motor (1104) is electrically connected with the output end of the commercial power, the outer side of the driving lead screw (1103) is movably connected with a driving block (1105) corresponding to the inner side of the connecting box (1102), the top end of the driving block (1105) is symmetrically and fixedly connected with a hydraulic lifting rod (1106), the top end of the hydraulic lifting rod (1106) is fixedly connected with a supporting inclined frame (1107), the top end of the supporting inclined frame (1107) is fixedly connected with a control rod (1108), and the middle part of one side of the top end of the connecting bracket (1101) is welded with a supporting platform (1109).

8. The ingot furnace with the tail gas treatment function according to claim 7, wherein the side surface and the bottom surface of the driving block (1105) are tightly attached to the inner wall of the connection box (1102), and the driving motor (1104) is fixedly connected with the connection box (1102).