CN114574962A

CN114574962A - Be applied to reinforced structure of continuous type of jumbo size silicon core ingot furnace

Info

Publication number: CN114574962A
Application number: CN202210137008.7A
Authority: CN
Inventors: 徐永根; 周波
Original assignee: Zhejiang Jingyang Electromechanical Co ltd
Current assignee: Zhejiang Jingyang Electromechanical Co ltd
Priority date: 2022-02-15
Filing date: 2022-02-15
Publication date: 2022-06-03
Anticipated expiration: 2042-02-15
Also published as: CN114574962B

Abstract

The invention discloses a continuous feeding structure applied to a large-size silicon core ingot furnace in the technical field of silicon core ingot casting, which comprises a supporting mechanism, wherein a material pouring mechanism is arranged at the top end of the supporting mechanism, the material pouring mechanism comprises a hopper, a material adding mechanism is arranged above the material pouring mechanism, the material adding mechanism comprises a material storage cylinder, two hoppers are arranged at the bottom end of the material storage cylinder, the bottom ends of the hoppers are communicated with a valve body, a second screw rod is arranged on one side of the valve body, silicon liquid in the hoppers can flow out from a material outlet and fall into a mold by utilizing the reciprocating offset of the hoppers, the valve body is opened and closed to control whether the silicon liquid in the material storage cylinder falls into the hoppers or not, so that the feeding process can be continuously and stably carried out, and the quantity of the silicon liquid falling is controlled by rotating the second screw rod, the effects of quantitative blanking and feeding are achieved.

Description

Be applied to reinforced structure of continuous type of jumbo size silicon core ingot furnace

Technical Field

The invention relates to the technical field of silicon core ingot casting, in particular to a continuous feeding structure applied to a large-size silicon core ingot casting furnace.

Background

The silicon core ingot furnace is mainly used for large-scale production of solar-grade polysilicon ingots, adopts an advanced polysilicon directional solidification technology, directionally condenses and crystallizes silicon materials after high-temperature melting through a special process, thereby meeting the requirement of the quality of polysilicon for solar cell production, and is intelligent large-scale production equipment which is suitable for long-time continuous operation and has high precision, high reliability and high automation degree.

When the existing silicon core ingot furnace carries out ingot casting, the charging structure mostly adopts a funnel to directly pour silicon liquid into the interior of a mold, the charging amount is controlled relatively trouble, and stable continuous quantitative charging can not be realized.

Based on the technical scheme, the invention designs a continuous feeding structure applied to a large-size silicon core ingot furnace to solve the problems.

Disclosure of Invention

The invention aims to provide a continuous feeding structure applied to a large-size silicon core ingot furnace, and aims to solve the problem that stable continuous quantitative feeding cannot be realized in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a continuous feeding structure applied to a large-size silicon core ingot furnace comprises a supporting mechanism, wherein the supporting mechanism comprises two fixed plates, two first limiting plates which are vertically distributed are arranged between the two fixed plates, two supporting plates are arranged between the two first limiting plates, a driving shaft is rotatably arranged on the two supporting plates through a bearing, a turntable is arranged at one end of the driving shaft, a first moving column is arranged on the two first limiting plates in a sliding mode, a first rack is arranged on one side of the first moving column, and a moving ring is arranged on one side, away from the first rack, of the first moving column;

the material pouring mechanism is arranged at the top end of the first limiting plate above the material pouring mechanism and comprises a hopper, a plurality of second hinged seats which are linearly distributed are arranged at the bottom end of the hopper, the second hinged seats are hinged and connected with first hinged seats, a discharge hole is arranged on one side of the hopper, a third hinged seat is arranged on one side, away from the discharge hole, of the hopper, a first deviation block is arranged on the third hinged seat, a first screw rod is arranged on the first deviation block in a threaded mode, a first conical gear is arranged at the lower end of the first screw rod, the first conical gear is meshed with a second conical gear, a transmission shaft is arranged in the center of the second conical gear, and a second deviation block is arranged in the middle of the transmission shaft in a rotating mode through a bearing;

the material adding mechanism is installed above the material pouring mechanism and comprises a storage barrel, two funnels are installed at the bottom end of the storage barrel, the bottom end of each funnel is communicated with a valve body, a valve core is arranged in the valve body in a rotating mode, a valve rod is installed on the valve core, two second limiting plates which are distributed from top to bottom are installed on one side of the storage barrel, two second moving columns are arranged on the second limiting plates in a sliding mode, a second screw rod is arranged on the upper end of each second moving column in a rotating mode through a bearing, a moving block is arranged on each second screw rod in a threaded mode, a second rack is installed on the moving block, and a third rack is installed on one side of each second moving column.

As a further scheme of the invention, a first gear is mounted on the driving shaft, the first gear is meshed with a second gear, a motor is mounted at the top end of the first limiting plate positioned below the first gear, and the output end of the motor is fixedly connected with the center of the second gear.

As a further scheme of the invention, a cylinder is arranged at the edge of one end of the turntable, which is far away from the driving shaft, and is arranged in the moving ring in a sliding manner, two limiting rods are respectively arranged at the upper end and the lower end of the moving ring, and the limiting rods at the upper end and the lower end of the moving ring are respectively arranged on two first limiting plates in a sliding manner.

As a further aspect of the present invention, the first rack slidably penetrates through the two first limiting plates, the first rack is engaged with a third gear, the third gear is mounted on the transmission shaft, and the two first limiting plates are mounted at the lower end of a space formed by the two fixing plates.

As a further scheme of the invention, the bottom ends of the first hinged seats are provided with supporting blocks, the supporting blocks are arranged at the top end of the first limiting plate positioned above the first hinged seats, two symmetrical side surfaces of the first offset block are provided with fixing rods, the two fixing rods are rotatably arranged on the third hinged seat, the discharge port is communicated with the interior of the hopper, and the top end of the hopper, close to the discharge port, is provided with a baffle plate.

As a further scheme of the invention, two limiting rings are installed on the first screw, a limiting piece is installed at the bottom end of the first screw, an end cover is installed at the top end of the second offset block, the lower end of the first screw and the limiting piece are rotatably arranged in the end cover, two first supporting seats are installed at the top end of the first limiting plate positioned above the first screw, and the transmission shaft is rotatably arranged on the two first supporting seats and the two fixing plates through bearings.

As a further scheme of the invention, a buckle is arranged on the outer ring of the storage cylinder, the buckle is fixedly arranged between two fixed plates, a bracket is arranged on one side of each of the two fixed plates close to each other, the upper ends of the two valve bodies are respectively and fixedly arranged on the two brackets, a plurality of second supporting seats are arranged at the bottom ends of the brackets, the valve rod is rotatably arranged on the plurality of second supporting seats through a bearing, the valve rod is rotatably arranged in the middle of the valve body, and the valve body is positioned above the hopper.

As a further scheme of the invention, a rectangular groove is formed in the upper end of the second moving column, the moving block is slidably arranged in the rectangular groove, a fourth gear is installed at one end, away from the valve core, of the valve rod, and the second rack can be meshed with the fourth gear.

As a further scheme of the invention, the second limiting plates which are distributed up and down are installed at the upper end of the space formed by the two fixing plates, the third rack slidably penetrates through the two second limiting plates and the two first limiting plates, the second moving column penetrates through the two first limiting plates, the third rack is meshed with a fifth gear, and the fifth gear is installed on the transmission shaft.

Compared with the prior art, the invention has the beneficial effects that:

1. the rotary table is driven to rotate by the rotation of the driving shaft, the movable ring is driven to reciprocate by the rotation of the rotary table, so that the driving shaft rotates in a reciprocating manner, and the material pouring mechanism and the material adding mechanism are driven to work by the rotation of the driving shaft.

2. The transmission shaft rotates to drive the second bevel gear and the two fifth gears on the transmission shaft to rotate, the second bevel gear rotates to drive the hopper to deflect, so that silicon liquid in the hopper can flow out from the discharge port and fall into the die, and reset, and the fifth gears rotate to drive the valve body to open and close, so that whether the silicon liquid in the storage cylinder falls into the hopper is controlled, and the feeding process can be continuously and stably carried out.

3. According to the invention, the second screw rod is rotated to enable the moving block on the second screw rod to lift at the upper end of the second moving column, so that the distance between the second rack and the fourth gear on the moving block is adjusted, the opening and closing time of the valve body is controlled, the falling amount of silicon liquid is controlled, and the effects of quantitative blanking and feeding are achieved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional front view of the present invention;

FIG. 3 is a schematic view of a cross-sectional backside structure of the present invention;

FIG. 4 is a schematic structural view of a material pouring processing section according to the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 6 is an enlarged view of the structure at B in FIG. 2 according to the present invention;

FIG. 7 is an enlarged view of the structure at C of FIG. 3 according to the present invention;

FIG. 8 is an enlarged view of the structure shown at D in FIG. 3 according to the present invention;

FIG. 9 is an enlarged view of the structure at E in FIG. 4 according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a support mechanism; 101. a fixing plate; 102. a first limit plate; 103. a support plate; 104. a drive shaft; 105. a first gear; 106. a second gear; 107. a motor; 108. a turntable; 109. a cylinder; 110. a moving ring; 111. a limiting rod; 112. a first moving column; 113. a first rack; 114. a third gear; 2. a material pouring mechanism; 201. a support block; 202. a first hinge mount; 203. a second hinge mount; 204. a hopper; 205. a discharge port; 206. a baffle plate; 207. a third hinge mount; 208. a fixing rod; 209. a first offset block; 210. a first screw; 211. a limiting ring; 212. a limiting sheet; 213. a first bevel gear; 214. a second bevel gear; 215. a drive shaft; 216. a first support base; 217. a second offset block; 218. an end cap; 3. a material adding mechanism; 301. buckling; 302. a storage cylinder; 303. a funnel; 304. a valve body; 305. a support; 306. a second support seat; 307. a valve core; 308. a valve stem; 309. a fourth gear; 310. a second limiting plate; 311. a second moving column; 312. a second screw; 313. a moving block; 314. a second rack; 315. a third rack; 316. and a fifth gear.

Detailed Description

Referring to fig. 1-9, the present invention provides a technical solution: the utility model provides a be applied to reinforced structure of continuous type of jumbo size silicon core ingot furnace, includes supporting mechanism 1, supporting mechanism 1 is including two fixed plates 101, two install two first limiting plates 102 that distribute from top to bottom between the fixed plate 101, two install two backup pads 103 between the first limiting plate 102, two it is provided with drive shaft 104 to rotate through the bearing on the backup pad 103, carousel 108 is installed to drive shaft 104 one end, utilizes drive shaft 104 to rotate and drives carousel 108 and rotate, two it is equipped with first removal post 112 to slide on the first limiting plate 102, first rack 113 is installed to first removal post 112 one side, the removal ring 110 is installed to one side that first rack 113 was kept away from to first removal post 112, makes removal ring 110 remove and can drive first rack 113 and go up and down.

The material pouring mechanism 2 is installed on the top end of the first limiting plate 102 located above, the material pouring mechanism 2 comprises a hopper 204, a plurality of second hinged seats 203 which are distributed linearly are installed at the bottom end of the hopper 204, the second hinged seats 203 are hinged to first hinged seats 202, the hopper 204 can deviate, a discharge port 205 is installed on one side of the hopper 204, one side, far away from the discharge port 205, of the hopper 204 is provided with a third hinged seat 207, a first deviation block 209 is installed on the third hinged seat 207, a first screw 210 is arranged on the first deviation block 209 in a threaded manner, the first deviation block 209 is driven to ascend and descend by the rotation of the first screw 210, a first conical gear 213 is installed at the lower end of the first screw 210, the first conical gear 213 is meshed with a second conical gear 214, a transmission shaft 215 is installed at the center of the second conical gear 214, and a second deviation block 217 is arranged in the middle of the transmission shaft 215 through the rotation of a bearing, enabling the second offset block 217 to offset;

the feeding mechanism 3 is arranged above the material pouring mechanism 2, the feeding mechanism 3 comprises a material storage barrel 302, two funnels 303 are arranged at the bottom end of the storage barrel 302, the bottom ends of the funnels 303 are communicated with a valve body 304, a valve core 307 is rotatably arranged in the valve body 304, a valve rod 308 is arranged on the valve core 307, so that the valve rod 308 can control the valve core 307 to rotate when rotating, two second limiting plates 310 which are distributed up and down are installed at one side of the material storage barrel 302, two second moving columns 311 are slidably arranged on the two second limiting plates 310, the upper end of the second moving column 311 is rotatably provided with a second screw 312 through a bearing, the second screw 312 is provided with a moving block 313 in a threaded manner, the moving block 313 is lifted and lowered by rotating the second screw 312, the second rack 314 is mounted on the moving block 313, a third rack 315 is installed at one side of the second moving column 311, so that the moving block 313 moves to drive the second rack 314 to move.

Further, a first gear 105 is installed on the driving shaft 104, the first gear 105 is engaged with a second gear 106, a motor 107 is installed at the top end of the first limiting plate 102 below, the output end of the motor 107 is fixedly connected with the center of the second gear 106, the driving shaft 104 is driven to rotate by the motor 107, a cylinder 109 is installed at the edge of one end of the turntable 108 away from the driving shaft 104, the cylinder 109 is slidably arranged inside the moving ring 110, the cylinder 109 rotates to drive the moving ring 110 to ascend and descend, two limiting rods 111 are installed at the upper end and the lower end of the moving ring 110, the limiting rods 111 at the upper end and the lower end of the moving ring 110 are respectively slidably arranged on the two first limiting plates 102, the moving process of the moving ring 110 is limited by the limiting rods 111, the first rack 113 slidably penetrates through the two first limiting plates 102, and the first rack 113 is engaged with a third gear 114, the third gear 114 is installed on the transmission shaft 215, and the two first limiting plates 102 are installed at the lower end of the space formed by the two fixing plates 101, so that the first rack 113 is lifted and lowered to drive the transmission shaft 215 to rotate in a reciprocating manner.

Further, the bottom ends of the first hinge seats 202 are provided with support blocks 201, the support blocks 201 are mounted at the top ends of the first limiting plates 102 located above, two symmetrical side surfaces of the first deviation blocks 209 are provided with fixing rods 208, the two fixing rods 208 are rotatably arranged on the third hinge seats 207, so that the first deviation blocks 209 can deviate, the discharge port 205 is communicated with the interior of the hopper 204, the top end of the hopper 204 near the discharge port 205 is provided with a baffle 206, so that silicon liquid cannot spill out in the material pouring process, the first screw 210 is provided with two limiting rings 211 for limiting the first deviation blocks 209, the bottom end of the first screw 210 is provided with a limiting piece 212, the top end of the second deviation block 217 is provided with an end cover 218, the lower end of the first screw 210 and the limiting piece 212 are rotatably arranged inside the end cover 218 to support and limit the first screw 210, two first supporting seats 216 are installed at the top end of the first limiting plate 102 located above, and the transmission shaft 215 is rotatably arranged on the two first supporting seats 216 and the two fixing plates 101 through bearings to limit the transmission shaft 215.

Further, a buckle 301 is installed on the outer ring of the storage barrel 302, the buckle 301 is fixedly installed between two fixing plates 101, a support 305 is installed on one side, close to each other, of each of the two fixing plates 101, the upper ends of the two valve bodies 304 are respectively and fixedly installed on the two supports 305 to fix the valve bodies 304, a plurality of second support seats 306 are installed at the bottom end of each support 305, the valve rods 308 are rotatably arranged on the plurality of second support seats 306 through bearings to support and limit the valve rods 308, the valve rods 308 are rotatably arranged in the middle of the valve bodies 304, the valve bodies 304 are located above the hoppers 204 to enable silicon liquid to fall into the hoppers 204, a rectangular groove is formed in the upper end of each second movable column 311, the movable block 313 is slidably arranged in the rectangular groove to limit the lifting process of the movable block 313, and a fourth gear 309 is installed at one end, far away from the valve core 307, of the valve rods 308, the second rack 314 can be meshed with the fourth gear 309, so that the second rack 314 can be lifted and lowered to drive the fourth gear 309 to rotate, the second limiting plates 310 which are distributed up and down are mounted at the upper ends of the spaces formed by the two fixing plates 101, the third rack 315 slidably penetrates through the two second limiting plates 310 and the two first limiting plates 102, the second moving column 311 penetrates through the two first limiting plates 102, the third rack 315 is meshed with the fifth gear 316, the fifth gear 316 is mounted on the transmission shaft 215, and the fifth gear 316 is driven to rotate in a reciprocating manner to drive the third rack 315 to lift.

The working principle is as follows: when the silicon liquid silicon, a second gear 106 rotates to drive a first gear 105 to rotate, the first gear 105 rotates to drive a driving shaft 104 to rotate, the driving shaft 104 rotates to drive a rotary disc 108 to rotate, the rotary disc 108 rotates to drive a cylinder 109 to rotate circumferentially, a limiting rod 111 on a moving ring 110 slides on two first limiting plates 102, the cylinder 109 rotates circumferentially to drive the moving ring 110 to reciprocate, a first moving column 112 connected with the moving ring 110 ascends and descends along with the first rack 113, the first rack 113 ascends and descends, the third gear 114 rotates in a reciprocating mode, and a transmission shaft 215 in the center of the third gear 114 rotates in a reciprocating mode;

the transmission shaft 215 drives the second bevel gear 214 and the two fifth gears 316 to rotate when rotating in a single direction, the second bevel gear 214 drives the first bevel gear 213 to rotate, the first bevel gear 213 drives the first screw 210 to rotate, the lower end of the first screw 210 and the limiting piece 212 rotate inside the end cover 218 at the top end of the second offset block 217 to limit the first screw 210 so that the first screw 210 cannot fall off, the first screw 210 rotates to drive the first offset block 209 to ascend on the first screw 210, the fixing rod 208 on the first offset block 209 during ascending is rotatably connected with the third hinge base 207, the second offset block 217 rotates on the transmission shaft 215 to enable the first offset block 209 and the first screw 210 to be offset, the first hinge base 202 is hinged with the second hinge base 203 so that the hopper 204 can be offset under the offset of the first screw 210, and silicon liquid in the hopper 204 can flow out from the discharge port 205, and falls into the mould;

at the moment, the fifth gear 316 rotates to drive the third rack 315 to descend, the third rack 315 descends to drive the second movable column 311 to descend, the second rack 314 on the second movable column 311 descends along with the second movable column, and is meshed with the fourth gear 309 in the descending process, so that the fourth gear 309 can rotate, the fourth gear 309 rotates to drive the valve rod 308 to rotate, the valve rod 308 rotates to drive the valve core 307 to rotate, the valve core 307 and the valve body 304 are closed, silicon liquid in the storage cylinder 302 cannot fall into the hopper 204 any more, after the material pouring of the hopper 204 is finished, the valve body 304 is opened along with the reset of the hopper 204, so that the silicon liquid flows into the hopper 204 again to wait for the next material feeding, and the material feeding process can be continuous and stable;

by rotating the second screw 312, the moving block 313 on the second screw is lifted at the upper end of the second moving column 311, so that the distance between the second rack 314 on the moving block 313 and the fourth gear 309 is adjusted, the opening and closing time of the valve body 304 is controlled, the falling amount of silicon liquid is controlled, and the quantitative blanking and charging effects are achieved.

Claims

1. The utility model provides a be applied to reinforced structure of continuous type of jumbo size silicon core ingot furnace, includes supporting mechanism (1), its characterized in that: the supporting mechanism (1) comprises two fixing plates (101), two first limiting plates (102) which are vertically distributed are arranged between the two fixing plates (101), two supporting plates (103) are arranged between the two first limiting plates (102), a driving shaft (104) is rotatably arranged on the two supporting plates (103) through a bearing, a turntable (108) is arranged at one end of the driving shaft (104), a first moving column (112) is slidably arranged on the two first limiting plates (102), a first rack (113) is arranged on one side of the first moving column (112), and a moving ring (110) is arranged on one side, away from the first rack (113), of the first moving column (112);

the material pouring mechanism (2) is installed on the top end of the first limiting plate (102) located above, the material pouring mechanism (2) comprises a hopper (204), a plurality of second hinged seats (203) distributed linearly are installed at the bottom end of the hopper (204), the second hinged seats (203) are hinged to first hinged seats (202), a discharge hole (205) is installed on one side of the hopper (204), a third hinged seat (207) is installed on one side, away from the discharge hole (205), of the hopper (204), a first offset block (209) is installed on the third hinged seat (207), a first screw (210) is arranged on the first offset block (209) in a threaded mode, a first conical gear (213) is installed at the lower end of the first screw (210), a second conical gear (214) is meshed with the first conical gear (213), and a transmission shaft (215) is installed at the center of the second conical gear (214), the middle part of the transmission shaft (215) is rotatably provided with a second offset block (217) through a bearing;

a feeding mechanism (3) is arranged above the material pouring mechanism (2), the feeding mechanism (3) comprises a material storage barrel (302), two funnels (303) are arranged at the bottom end of the material storage barrel (302), the bottom ends of the funnels (303) are communicated with a valve body (304), a valve core (307) is rotatably arranged in the valve body (304), a valve rod (308) is arranged on the valve core (307), two second limiting plates (310) which are distributed up and down are installed on one side of the storage barrel (302), two second moving columns (311) are arranged on the two second limiting plates (310) in a sliding mode, the upper end of the second moving column (311) is rotatably provided with a second screw (312) through a bearing, a moving block (313) is arranged on the second screw (312) in a threaded manner, a second rack (314) is mounted on the moving block (313), and a third rack (315) is mounted on one side of the second moving column (311).

2. The continuous feeding structure applied to the large-size silicon core ingot furnace as claimed in claim 1, wherein: install first gear (105) on drive shaft (104), first gear (105) meshing has second gear (106), is located the below motor (107) are installed to first limiting plate (102) top, motor (107) output and second gear (106) center department fixed connection.

3. The continuous feeding structure applied to the large-size silicon core ingot furnace as claimed in claim 1, wherein: carousel (108) keep away from the one end edge of drive shaft (104) and install cylinder (109), cylinder (109) slide to set up inside shift ring (110), two gag lever post (111) are all installed at both ends about shift ring (110), gag lever post (111) at both ends slide respectively and set up on two first limiting plate (102) about shift ring (110).

4. The continuous feeding structure applied to the large-size silicon core ingot furnace as claimed in claim 1, wherein: the first rack (113) penetrates through the two first limiting plates (102) in a sliding mode, a third gear (114) is meshed with the first rack (113), the third gear (114) is installed on a transmission shaft (215), and the two first limiting plates (102) are installed at the lower end of a space formed by the two fixing plates (101).

5. The continuous feeding structure applied to the large-size silicon core ingot furnace as claimed in claim 1, wherein: a plurality of supporting shoe (201) are installed to first articulated seat (202) bottom, supporting shoe (201) are installed on first limiting plate (102) top that is located the top, dead lever (208), two are all installed to two sides of first skew piece (209) symmetry dead lever (208) are rotated and are set up on third articulated seat (207), discharge gate (205) and hopper (204) inside intercommunication, baffle (206) are installed near discharge gate (205) department on hopper (204) top.

6. The continuous feeding structure applied to the large-size silicon core ingot furnace as claimed in claim 1, wherein: install two spacing rings (211) on first screw rod (210), spacing piece (212) are installed to first screw rod (210) bottom, end cover (218) are installed on second skew piece (217) top, first screw rod (210) lower extreme and spacing piece (212) are rotated and are set up inside end cover (218), are located the top two first supporting seat (216) are installed on first limiting plate (102) top, transmission shaft (215) rotate through the bearing and set up on two first supporting seat (216) and two fixed plates (101).

7. The continuous feeding structure applied to the large-size silicon core ingot furnace as claimed in claim 1, wherein: buckle (301) are installed to storage silo (302) outer lane, buckle (301) fixed mounting is between two fixed plates (101), two support (305) are all installed to one side that fixed plate (101) are close to each other, two fixed mounting is on two support (305) respectively for valve body (304) upper end, a plurality of second supporting seat (306) are installed to support (305) bottom, valve rod (308) rotate through the bearing and set up on a plurality of second supporting seat (306), valve rod (308) rotate and set up at valve body (304) middle part, valve body (304) are located hopper (204) top.

8. The continuous feeding structure applied to the large-size silicon core ingot furnace as claimed in claim 1, wherein: the upper end of the second moving column (311) is provided with a rectangular groove, the moving block (313) is arranged in the rectangular groove in a sliding mode, a fourth gear (309) is installed at one end, far away from the valve core (307), of the valve rod (308), and the second rack (314) can be meshed with the fourth gear (309).

9. The continuous feeding structure applied to the large-size silicon core ingot furnace as claimed in claim 1, wherein: the second limiting plate (310) which is distributed up and down is installed at the upper end of a space formed by the two fixing plates (101), the third rack (315) penetrates through the two second limiting plates (310) and the two first limiting plates (102) in a sliding mode, the second moving column (311) penetrates through the two first limiting plates (102), the third rack (315) is meshed with the fifth gear (316), and the fifth gear (316) is installed on the transmission shaft (215).