CN213232570U - Crystal lifting and rotating mechanism for single crystal furnace - Google Patents

Abstract

The utility model discloses a crystal lifting and rotating mechanism for a single crystal furnace, which comprises a hydraulic cylinder, wherein a first fixed plate is fixedly arranged outside the hydraulic cylinder, hexagonal fixed rods are longitudinally arranged on the front side and the rear side of the first fixed plate, the lower end of the hexagonal fixed rod is fixed on the plate wall of a bearing plate, a lifting connecting piece is arranged at the top end of a telescopic rod of the hydraulic cylinder, a guide shaft fixing seat is arranged on the right side of the lower end surface of the lifting connecting piece, a guide shaft is longitudinally arranged inside the guide shaft fixing seat, and a metal shaft collar is arranged in the middle of an outer shaft rod of the guide shaft, so that the crystal lifting and rotating mechanism for the single crystal furnace can reach stable speed when a crystal is lifted through a hydraulic lifting system of the hydraulic cylinder, the distribution of impurities in a melt is uniform, the, is beneficial to the popularization and the application of the photovoltaic cell.

Description

Crystal lifting and rotating mechanism for single crystal furnace

Technical Field

The utility model relates to a single crystal growing furnace technical field, the concrete field is a crystal promotes rotary mechanism for single crystal growing furnace.

Background

A photovoltaic cell is a photoelectric semiconductor sheet that directly generates electricity using sunlight. It can output voltage and generate current under the condition of loop as long as it is illuminated by light meeting a certain illumination condition. The solar cell is a device which directly converts light energy into electric energy through a photoelectric effect or a photochemical effect. At present, the production and export quantity of domestic photovoltaic cells leap over the first ranks in the world, but domestic equipment is still in a poor position relative to foreign countries, and the market needs photovoltaic cell silicon wafers with high conversion rate, so that the development of the domestic photovoltaic cells is restricted. The key point is that the quality requirement is maintained from the beginning of single crystal crystallization, and how to ensure that a single crystal furnace keeps relatively stable and effective speed when pulling single crystals, but because the existing single crystal furnace lifting mechanism structure adopts a clutch structure, the stable speed is difficult to achieve when pulling, the impurity distribution in a melt is uneven, the uniformity of the radial resistivity of the single crystals is difficult to control, the quality difference of the pulled silicon rods is great, the condition of scrapping and returning the silicon rods to the furnace often occurs, the finished product rate is low, the resource waste is great, and the obvious defects are not favorable for the popularization and the application of the photovoltaic cells.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a crystal promotes rotary mechanism for single crystal growing furnace, in order to solve and to provide in the above-mentioned background art because current single crystal growing furnace hoist mechanism structure is the structure that adopts the clutch, be difficult to reach stable speed when carrying and drawing, it is inhomogeneous to cause impurity distribution in the fuse-element, it is difficult to control to make the radial resistivity homogeneity of single crystal, there is the silicon rod quality difference of drawing very big, scrap the condition of returning to the furnace and often take place, it is lower to cause the yield, the great obvious defect of the wasting of resources, be unfavorable for photovoltaic cell's the problem of popularization and application.

In order to achieve the above object, the utility model provides a following technical scheme: a crystal lifting and rotating mechanism for a single crystal furnace comprises a hydraulic cylinder, wherein a first fixing plate is fixedly arranged outside the hydraulic cylinder, hexagonal fixing rods are longitudinally arranged on the front side and the rear side of the first fixing plate, the lower end of each hexagonal fixing rod is fixed on the plate wall of a bearing plate, a lifting connecting piece is arranged at the top end of a telescopic rod of the hydraulic cylinder, a guide shaft fixing seat is arranged on the right side of the lower end face of the lifting connecting piece, a guide shaft is longitudinally arranged inside the guide shaft fixing seat, a metal shaft collar is arranged in the middle of an outer shaft rod of the guide shaft, a first synchronous belt wheel is arranged at the outer end of the metal shaft collar, a synchronous toothed belt is arranged outside the first synchronous belt wheel, a second synchronous belt wheel is further arranged inside the synchronous toothed belt, a rotating fixing piece is arranged at the lower end of the second, a second fixing plate is fixedly arranged outside the driving motor, round fixing rods are longitudinally fixed on the front side and the rear side of the second fixing plate, the lower ends of the round fixing rods are fixed on the plate wall of the bearing plate, a bearing adjusting ring is arranged at the bottom end of the first synchronous pulley, a bearing fixing seat is arranged at the bottom end of the bearing adjusting ring, the bottom end of the bearing fixing seat is arranged at the upper end of the bearing plate, a flange plate is arranged at the bottom end of the bearing plate, a fixing ring is arranged at the bottom end of the flange plate, the lower end of the guide shaft penetrates through the middle part of the fixing ring and is connected to the upper end of the fixing hoop, a crystal is clamped in the middle part of the fixing hoop and is arranged inside the single crystal furnace, the lower end face of the single crystal furnace is fixed on the upper end face of the, an alloy supporting rod is longitudinally installed at the rear end of the upper end face of the bottom supporting plate, and the upper end of the alloy supporting rod is fixed on the lower end face of the bearing plate.

Preferably, a double-opening feeding door is installed on the furnace wall of the single crystal furnace, and a pipe-type handle is installed on the front surface of the double-opening feeding door.

Preferably, a crucible lifting device is installed on the lower side wall of the inner cavity of the single crystal furnace.

Preferably, the upper end and the lower end of the outer shaft rod of the hexagonal fixing rod are both provided with external threads, and the first fixing plate and the bearing plate are both provided with internal thread holes corresponding to the external threads.

Preferably, the first synchronous pulley, the bearing adjusting ring, the bearing fixing seat, the flange plate, the fixing ring and the center of the fixing hoop are all on the same vertical line.

Preferably, the number of the alloy supporting rods is two, and the two alloy supporting rods are fixed at the top corners of the upper end face of the bottom supporting plate.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a pair of hydraulic pressure operating system that crystal promoted rotary mechanism for single crystal growing furnace passes through the pneumatic cylinder can reach stable speed when carrying the pulling crystal body, makes impurity distribution even in the fuse-element, has controlled the homogeneity of the radial resistivity of single crystal, and the yield is high, is favorable to photovoltaic cell's popularization and application.

Drawings

Fig. 1 is a schematic view of the external structure of the main view of the present invention;

FIG. 2 is a schematic view of the internal structure of the main view of the present invention;

fig. 3 is a schematic side view of the present invention.

In the figure: 1-a hydraulic cylinder, 2-a first fixing plate, 3-a hexagonal fixing rod, 4-a bearing plate, 5-a lifting connecting piece, 6-a guide shaft fixing seat, 7-a guide shaft, 8-a metal shaft collar, 9-a first synchronous pulley, 10-a synchronous cog belt, 11-a second synchronous pulley, 12-a rotary fixing piece, 13-a driving motor and 14-a second fixing plate, 15-round fixed rod, 16-bearing adjusting ring, 17-bearing fixed seat, 18-flange plate, 19-fixed ring, 20-fixed hoop, 21-crystal, 22-single crystal furnace, 23-bottom supporting plate, 24-alloy supporting rod, 25-double-opening feeding door, 26-pipe type handle and 27-crucible lifting device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a crystal lifting and rotating mechanism for a single crystal furnace comprises a hydraulic cylinder 1, wherein the hydraulic cylinder 1 is a hydraulic actuating element which converts hydraulic energy into mechanical energy and performs linear reciprocating motion, a speed reducer can be omitted when the hydraulic actuating element is used for realizing reciprocating motion, a transmission gap does not exist, the hydraulic cylinder is stable in motion, the output force of the hydraulic cylinder is in direct proportion to the effective area of a piston and the pressure difference between the effective area and the two sides of the piston, and the hydraulic cylinder 1 basically comprises a cylinder barrel, a cylinder cover, the piston, a piston rod, a sealing device, a buffering device and an exhaust device. The buffering device and the exhaust device are determined according to specific application occasions, a first fixing plate 2 is fixedly arranged outside a hydraulic cylinder 1, hexagonal fixing rods 3 are longitudinally arranged on the front side and the rear side of the first fixing plate 2, the lower ends of the hexagonal fixing rods 3 are fixed on the plate wall of a bearing plate 4, a lifting connecting piece 5 is arranged at the top end of a telescopic rod of the hydraulic cylinder 1, a guide shaft fixing seat 6 is arranged on the right side of the lower end face of the lifting connecting piece 5, a guide shaft 7 is longitudinally arranged inside the guide shaft fixing seat 6, the surface of the guide shaft 7 is plated with hard chrome, the wear resistance is good, the hydraulic cylinder can be directly used, the processing is time-saving and convenient, a metal shaft collar 8 is arranged in the middle of an outer shaft rod of the guide shaft 7, a first synchronous belt pulley 9 is arranged at the outer end of the metal shaft collar 8, a synchronous toothed belt 10 is arranged outside the, The belt transmission modes such as flat belt and the like are similar and are a flexible transmission mode. The synchronous toothed belt 10 is made of steel wire rope or glass fiber rope as the strength layer, polyurethane or neoprene is coated outside, and the inner periphery of the belt is made into a toothed shape to be meshed with the first synchronous pulley 9. Because the strong layer has small deformation after bearing and can keep the circumferential section of the toothed belt unchanged, the belt and the belt wheels do not slide relatively, thereby ensuring synchronous transmission and constant transmission ratio, a second synchronous belt wheel 11 is also arranged in the synchronous toothed belt 10, a belt transmission relationship is formed among a first synchronous belt wheel 9, the synchronous toothed belt 10 and the second synchronous belt wheel 11, a rotary fixing piece 12 is arranged at the lower end of the second synchronous belt wheel 11, the lower end of the rotary fixing piece 12 is connected on a transmission shaft of a driving motor 13, a second fixing plate 14 is fixedly arranged outside the driving motor 13, round fixing rods 15 are longitudinally fixed at the front side and the rear side of the second fixing plate 14, the lower end of each round fixing rod 15 is fixed on the plate wall of the bearing plate 4, a bearing adjusting ring 16 is arranged at the bottom end of the first synchronous belt wheel 9, a bearing fixing seat 17 is arranged at the bottom end of the bearing adjusting ring 16, the bottom end of the bearing fixing seat, flange plate 18 is installed to the bottom of loading board 4, solid fixed ring 19 is installed to the bottom of flange plate 18, the lower extreme of guiding axle 7 runs through solid fixed ring 19's middle part and is connected in the upper end of fixed hoop 20, the middle part clamping of fixed hoop 20 has crystal body 21, place the inside of single crystal growing furnace 22 in the crystal body 21, the lower terminal surface of single crystal growing furnace 22 is fixed in the up end of bottom sprag board 23, the bottom mounting of pneumatic cylinder 1 is in the up end of bottom sprag board 23, alloy branch 24 is vertically installed to the rear end of bottom sprag board 23 up end, the upper end of alloy branch 24 is fixed in the lower.

Specifically, a double-opening feeding door 25 is installed on the wall of the single crystal furnace 22, and a pipe-type handle 26 is installed on the front surface of the double-opening feeding door 25.

Specifically, a crucible lifting device 27 is mounted on the lower side wall of the inner cavity of the single crystal furnace 22.

Particularly, the upper and lower both ends of the outer axostylus axostyle of hexagonal dead lever 3 all are provided with the external screw thread, and all are provided with the internal thread hole rather than the external screw thread is corresponding on first fixed plate 2 and the loading board 4.

Specifically, the centers of the first synchronous pulley 9, the bearing adjusting ring 16, the bearing fixing seat 17, the flange 18, the fixing ring 19 and the fixing hoop 20 are all on the same vertical line.

Specifically, the number of the alloy struts 24 is two and both are fixed at the top corners of the upper end surface of the bottom support plate 23.

The working principle is as follows: the utility model discloses when using, can promote lift connecting piece 5 through pneumatic cylinder 1 and go up and down the activity, indirect drive is fixed and is carried out the elevating movement at crystal body 21 of guiding axle 7 lower extreme, can drive second synchronous pulley 11 when driving motor 13 starts and rotate, second synchronous pulley 11 drives first synchronous pulley 9 through the joint action of synchronous cog-belt 10 and carries out rotary motion, indirectly drive guiding axle 7 and carry out the rotation action, the crystal body 21 that drives clamping in the fixed hoop 20 when guiding axle 7 is rotatory rotates.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a crystal lifting and rotating mechanism for single crystal growing furnace, includes pneumatic cylinder (1), its characterized in that: the outer part of the hydraulic cylinder (1) is fixedly provided with a first fixing plate (2), the front side and the rear side of the first fixing plate (2) are both longitudinally provided with hexagonal fixing rods (3), the lower ends of the hexagonal fixing rods (3) are fixed on the plate wall of the bearing plate (4), the top end of a telescopic rod of the hydraulic cylinder (1) is provided with a lifting connecting piece (5), the right side of the lower end face of the lifting connecting piece (5) is provided with a guide shaft fixing seat (6), the inner part of the guide shaft fixing seat (6) is longitudinally provided with a guide shaft (7), the middle part of an outer shaft rod of the guide shaft (7) is provided with a metal shaft collar (8), the outer end of the metal shaft collar (8) is provided with a first synchronous belt pulley (9), the outer part of the first synchronous belt pulley (9) is provided with a synchronous toothed belt (10), and the inner part, the lower end of the second synchronous belt pulley (11) is provided with a rotary fixing part (12), the lower end of the rotary fixing part (12) is connected onto a transmission shaft of a driving motor (13), a second fixing plate (14) is fixedly arranged outside the driving motor (13), round fixing rods (15) are longitudinally fixed on the front side and the rear side of the second fixing plate (14), the lower end of each round fixing rod (15) is fixed on the plate wall of the bearing plate (4), a bearing adjusting ring (16) is arranged at the bottom end of the first synchronous belt pulley (9), a bearing fixing seat (17) is arranged at the bottom end of the bearing adjusting ring (16), the bottom end of the bearing fixing seat (17) is arranged at the upper end of the bearing plate (4), a flange (18) is arranged at the bottom end of the bearing plate (4), and a fixing ring (19) is arranged at the bottom end of the, the lower extreme of guiding axle (7) runs through the middle part of solid fixed ring (19) is connected in the upper end of fixed hoop (20), crystal (21) are clamped to the middle part dress of fixed hoop (20), place the inside of single crystal growing furnace (22) in crystal (21), the lower terminal surface of single crystal growing furnace (22) is fixed in the up end of bottom sprag board (23), the bottom mounting in the up end of bottom sprag board (23) of pneumatic cylinder (1), alloy branch (24) are vertically installed to the rear end of bottom sprag board (23) up end, the upper end of alloy branch (24) is fixed in the lower terminal surface of loading board (4).

2. The crystal lifting and rotating mechanism for the single crystal furnace according to claim 1, wherein: the double-opening feeding door (25) is installed on the wall of the single crystal furnace (22), and the front surface of the double-opening feeding door (25) is provided with a pipe-type handle (26).

3. The crystal lifting and rotating mechanism for the single crystal furnace according to claim 1, wherein: a crucible lifting device (27) is arranged on the lower side wall of the inner cavity of the single crystal furnace (22).

4. The crystal lifting and rotating mechanism for the single crystal furnace according to claim 1, wherein: the upper end and the lower end of the outer shaft rod of the hexagonal fixing rod (3) are both provided with external threads, and the first fixing plate (2) and the bearing plate (4) are both provided with internal thread holes corresponding to the external threads.

5. The crystal lifting and rotating mechanism for the single crystal furnace according to claim 1, wherein: the first synchronous pulley (9), the bearing adjusting ring (16), the bearing fixing seat (17), the flange plate (18), the fixing ring (19) and the center of the fixing hoop (20) are all on the same vertical line.

6. The crystal lifting and rotating mechanism for the single crystal furnace according to claim 1, wherein: the number of the alloy supporting rods (24) is two, and the two alloy supporting rods are fixed at the top corners of the upper end face of the bottom supporting plate (23).

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