Summary of the invention
Based on this, be necessary to provide one to polycrystalline silicon ingot or purifying furnace secondary charging, quartz crucible utilization ratio can be improved, improve the moveable secondary charging of polycrystalline ingot furnace device of ingot furnace output.
A kind of moveable secondary charging of polycrystalline ingot furnace device, comprising: travelling car; Loading hopper, is arranged on travelling car, is provided with bleeder valve bottom it; Feeding device, comprise the housing be connected with bleeder valve, wherein said enclosure interior is provided with for receiving and the drawing-in device of transferred silicon material, the liftable filling tube being used for receiving the silicon material that drawing-in device sends, and described housing is provided with the Link Port that can stretch out for described filling tube; And lifting device, control the lifting of described filling tube.
Above-mentioned moveable secondary charging of polycrystalline ingot furnace device, feeding device is provided with the Link Port be connected with the filler interface place of ingot furnace, time reinforced, the filling tube that lifting device controls feeding device inside declines and enters ingot furnace inside via Link Port, silicon material in loading hopper constantly enters filling tube under the effect of drawing-in device, and then enter ingot furnace inside, thus realize the secondary charging to polycrystalline silicon ingot or purifying furnace, improve crucible utilization ratio, improve ingot furnace output.
Wherein in an embodiment, described drawing-in device is oscillating feeder.
Wherein in an embodiment, described filling tube is vertically arranged, also be provided with horizontally disposed transfer lime in described housing, described transfer lime is between described oscillating feeder and filling tube, and described filling tube can drop to the position of its open top lower than the mouth of pipe of described transfer lime.
Wherein in an embodiment, described transfer lime and filling tube are silica tube.
Wherein in an embodiment, described lifting device comprise be fixed on hull outside motor, be arranged on the straight line lifting unit of described enclosure interior by described electric machine control, described straight line lifting unit drives described filling tube to be elevated.
Wherein in an embodiment, be tightly connected between described loading hopper and housing, the two forms cavity after connecting, described cavity is in communication with the outside by described Link Port, described loading hopper is provided with charging opening, feeding cover and vacuum orifice, described travelling car is provided with the vacuum pump be connected with described vacuum orifice.
Wherein in an embodiment, described travelling car is also provided with electric control cabinet, described vacuum pump is by described electric control cabinet control work.
Wherein in an embodiment, on the wall of described housing, corresponding described Link Port is provided with viewing window and camera, and described camera is by described electric control cabinet control work.
Wherein in an embodiment, described travelling car is provided with the hopper base supporting described loading hopper, is provided with LOAD CELLS between described hopper base and loading hopper.
Wherein in an embodiment, the inwall of described loading hopper is provided with supercoat.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar improvement when intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Below in conjunction with accompanying drawing, better embodiment of the present invention is described.
With reference to figure 1 and Fig. 2, the invention provides a kind of transportable secondary charging of polycrystalline ingot furnace device, can
In ingot casting process, give secondary charging of polycrystalline ingot furnace, and can multiple stage ingot furnace equipment use be supplied.
Ginseng Fig. 1, secondary charging of polycrystalline ingot furnace device comprises travelling car 110, hopper base 120, loading hopper 130, LOAD CELLS 140, feeding device 150 and lifting device 160.
Travelling car 110 can transferring position as required, enables secondary charging of polycrystalline ingot furnace device to different ingot furnace equipment secondary chargings.Travelling car 110 is provided with electric control cabinet 112, vacuum pump 114.Wherein, electric control cabinet 112 comprises PLC and upper computer, in order to control the electrical work in feeding device.
Hopper base 120 is fixed on travelling car 110, is used for supporting loading hopper 130.LOAD CELLS 140 is also provided with between hopper base 120 and loading hopper 130.Such as, three place's fulcrums can be adopted to support loading hopper 130, and everywhere fulcrum all arranges LOAD CELLS 140.When silicon material is housed in loading hopper 130, what utilize LOAD CELLS 140 to claim is the gross weight of loading hopper 130 together with silicon material.Because the weight of loading hopper 130 is fixed, therefore utilize PLC directly can calculate the weight of the silicon material added in loading hopper 130.
The inwall of loading hopper 130 is provided with supercoat, to avoid polluting silicon material.The top of loading hopper 130 offers charging opening 132, be used for the feeding cover 133 of closed charging opening 132, vacuum orifice 134.The bottom of loading hopper 130 is provided with bleeder valve 135, is used for controlling the work output of silicon material from loading hopper 130.Vacuum pump 114 on travelling car 110 is connected with vacuum orifice 134.Vacuum pump 114 controls work by electric control cabinet 112.
Feeding device 150 comprises the housing 152 be connected with bleeder valve 135.Housing 152 inside is provided with for receiving and transporting the drawing-in device 153 of silicon material, the liftable filling tube 154 being used for receiving the silicon material that drawing-in device 153 sends.Housing 152 is provided with the Link Port 1522 that can stretch out for filling tube 154.Housing 152 is by being tightly connected between bleeder valve 135 and loading hopper 130, and the two forms cavity after connecting.This cavity is in communication with the outside by means of only Link Port 1522.
In the present invention, drawing-in device 153 is oscillating feeder.Filling tube 154 is vertically arranged.Horizontally disposed transfer lime 155 is also provided with in housing 152.Transfer lime 155 is between oscillating feeder and filling tube 154.Ginseng Fig. 2, to in polycrystalline ingot furnace 200 during secondary charging, filling tube 154 is under the control of lifting device 160, the position of its open top lower than the mouth of pipe of transfer lime 155 can be dropped to, enable the silicon material in transfer lime 155 enter filling tube 154, and then enter under gravity in polycrystalline ingot furnace 200.Filling tube 154 and transfer lime 155 are silica tube, can not pollute silicon material, and high temperature resistant.
Ginseng Fig. 3 and Fig. 4, lifting device 160 is in order to control the lifting of filling tube 154.Lifting device 160 comprise be fixed on housing 152 outside motor 162, be arranged on the straight line lifting unit 164 that housing 152 inside controls by motor 162.Filling tube 154 is driven to realize lifting when straight line lifting unit 164 is elevated.Magnetic fluid 166 is utilized to seal between motor 162 and housing 152.
The component of straight line lifting unit 164 can be the convert rotational motion that motor 162 can be exported of any appropriate be straight line up-and-down movement.Such as, straight line lifting unit 164 can be Timing Belt system.Timing Belt coordinates with the motor shaft of motor 162, and filling tube 154 is then fixed on Timing Belt.When motor shaft rotates, Timing Belt can drive filling tube 154 to rise or decline.
Ginseng Fig. 2, on the wall of housing 152, corresponding Link Port 1522 is also provided with viewing window 156 and camera 157.Camera 157 controls work by electric control cabinet 112.Utilize camera 157 to coordinate the image analysis software of special exploitation to control feeding quantity and speed, prevent filling tube 154 from gathering materials, realize semi-automatic reinforced.
Below in conjunction with Fig. 1 and Fig. 2, the concise and to the point working process describing secondary charging of polycrystalline ingot furnace device of the present invention.
Normally feed at polycrystalline ingot furnace 200 and enter into fusing later stage, the bulk silicon material be namely contained in advance in quartz crucible melts complete substantially, can carry out secondary charging after certain stocking space is arranged at crucible top.
The polycrystalline silicon raw material being crushed to certain particle diameter is installed in loading hopper 130.Utilize travelling car 110 that whole feeding device is moved to the filler interface place 210 of polycrystalline ingot furnace 200, the Link Port 1522 of feeding device is connected with filler interface place 210.Open vacuum pump 114 and be evacuated to vacuum pump highest attainable vacuum from the vacuum interface 134 of loading hopper 130, and carry out argon replaces gas to reduce the oxygen equal size in feeding device, adjustment argon gas input makes the pressure equilibrium in the vacuum pressure of feeding device and polycrystalline ingot furnace 200.
Open the valve at the filler interface place 210 of polycrystalline ingot furnace 200, filling tube 154 is dropped to ingot furnace inside.The image analysis software of camera 157 and special exploitation starts observe and detect current melted state, at the end of the silicon material fusing of prepackage is basic, system sends acousto-optic hint operator and can start to feed in raw material, after operator confirm safety, open the bleeder valve 135 bottom loading hopper 130, regulate feed rate that broken silicon material is added in ingot furnace uniformly slowly, camera 157 is constantly detecting reinforced state simultaneously, image analysis software constantly detects reinforced situation, feed in raw material as silicon material has packing phenomenon to suspend, melt until silicon material or start after removing to feed in raw material.The detection of camera 157 works and realizes semi-automatic reinforced according to the feed parameters of the sequence of control write in advance and setting together with LOAD CELLS 140, after reaching the feeding quantity of processing requirement, rise filling tube 154, close the valve at the filler interface place 210 of ingot casting furnace body, after feeding device is inflated to normal atmosphere, the Link Port 1522 of feeding device is thrown off with filler interface place 210, complete secondary charging work, thus realize polycrystalline silicon ingot or purifying furnace secondary charging, improve crucible utilization ratio, improve ingot furnace output.Then this device can move to next needs reinforced ingot furnace equipment place to feed in raw material.
In addition, secondary charging of polycrystalline ingot furnace device of the present invention, goes for current domestic most ingot furnace equipment, as: the equipment of GT, smart merit, Jing Yuntongdeng company is little to ingot furnace transformation.Particularly, ginseng Fig. 5, be the top structure schematic diagram of existing ingot furnace 300, its top is provided with viewing window 310.When using secondary charging of polycrystalline ingot furnace device of the present invention, without the need to transforming ingot casting body of heater, only needing viewing window parts to be carried out little transformation and applicable feeding device, a large amount of improvement expenses can be reduced.Ginseng Fig. 6, namely only needs to set up segregaion valve 220 at original viewing window place, is transformed into the interface that can be connected with Link Port 1522.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification sheets is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.