CN102694058A - Device for preparing solar cell silicon chip cutting mortar - Google Patents
Device for preparing solar cell silicon chip cutting mortar Download PDFInfo
- Publication number
- CN102694058A CN102694058A CN2011100709457A CN201110070945A CN102694058A CN 102694058 A CN102694058 A CN 102694058A CN 2011100709457 A CN2011100709457 A CN 2011100709457A CN 201110070945 A CN201110070945 A CN 201110070945A CN 102694058 A CN102694058 A CN 102694058A
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- polyethylene glycol
- heat
- solar cell
- exchange device
- silicon chip
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a device for preparing solar cell silicon chip cutting mortar. The device comprises a heat source device used for heating polyethylene glycol, a heat exchange device and a stirring device used for mixing silicon carbide and the heated polyethylene glycol. An upper part of the heat exchange device is provided with a water inlet used for inletting hot water, a lower part of the heat exchange device is provided with a water outlet, and the water inlet and the water outlet are connected through a pipeline and the heat source device. An upper part of the heat exchange device is provided with a feed port used for inletting polyethylene glycol to be heated, a lower part of the heat exchange device is provided with a discharge port used for outputting the heated polyethylene glycol, and the discharge port is connected with the stirring device. According to the device for preparing the solar cell silicon chip cutting mortar, through carrying out rapid heating on the polyethylene glycol, the viscosity of the polyethylene glycol can be reduced rapidly, the silicon carbide particles disperse homogeneously in the polyethylene glycol, and problems that a silicon chip surface has a line trace, a filter bag is blocked and a load of a mortar pump is overlarge of a solar cell silicon chip are solved.
Description
Technical field
The present invention relates to the mortar preparation technique field that is used for the silicon chip cutting in the solar cell manufacture process, be specifically related to a kind of equipment of preparing solar cell silicon wafer cutting mortar.
Background technology
In practical application, strict to the index request of the surface smoothness of the silicon chip that is used to make solar cell, cleanliness factor, in the cutting process of silicon chip, need to use hardness is high, granularity is little and the silicon carbide micro-powder of centralized particle diameter as main cutting medium.For silicon carbide micro-powder is uniformly dispersed in working angles; In time take away simultaneously the frictional heat that produces in the working angles; Usually earlier the carbonization micro mist is joined also fully to disperse in polyethylene glycol oiliness such as (PEG) the cutting liquid according to a certain percentage, be configured to be used further to the silicon chip cutting behind the uniform and stable cutting mortar.Polyethylene glycol (PEG) molecular weight that is used for the cutting liquid of silicon chip cutting process is generally 300-400, and other PEG of this grade has suitable viscosity index, and existing good flowability has good dispersion stabilization to silicon carbide micro-powder again, and band sand ability is strong.
The problem that prior art exists is: when temperature is low in the winter time; It is big that polyethylene glycol viscosity becomes; Silicon-carbide particle is difficult to disperse in polyethylene glycol, a lot of particle agglomeration phenomenons occur, and when cutting, will produce silicon chip surface has problems such as stria, the stifled bag of filter bag and mortar pump load be excessive.
Summary of the invention
To the above-mentioned defective that prior art exists, the problem that the present invention will solve is, a kind of equipment of preparing solar cell silicon wafer cutting mortar is provided, and reduces the viscosity of polyethylene glycol, satisfies the requirement of solar cell silicon wafer cutting to mortar.
For addressing the above problem; The invention provides a kind of equipment of preparing solar cell silicon wafer cutting mortar; It is characterized in that, comprise the agitating device that is used to heat the heat power supply device and the heat-exchange device of polyethylene glycol and is used for the said polyethylene glycol after the heating is mixed with carborundum; The top of said heat-exchange device is provided with the water inlet that is used to get into hot water, and the bottom of said heat-exchange device is provided with delivery port, and said water inlet is connected with said heat power supply device through pipeline respectively with delivery port; The top of said heat-exchange device is provided with the charging aperture that is used to get into polyethylene glycol to be heated, and the bottom of said heat-exchange device is provided with the discharging opening that is used to export the polyethylene glycol after the heating, and said discharging opening is connected with said agitating device.
Preferably, also comprise the storage device that is used to store polyethylene glycol to be heated, said storage device is connected with charging aperture on the said heat-exchange device, also is provided with air pump between said charging aperture and the storage device.
As preferably, said charging aperture and storage device are respectively two, and each said charging aperture is connected with a said storage device respectively.
As preferably, said heat-exchange device is a heat-exchangers of the plate type.
As preferably, said heat power supply device is a boiler.
The equipment of preparation solar cell silicon wafer cutting mortar of the present invention is through carrying out Fast Heating to polyethylene glycol; Can reduce the viscosity of polyethylene glycol rapidly; Silicon-carbide particle is evenly disperseed in polyethylene glycol, and having solved the silicon chip surface that occurs in the solar cell silicon wafer cutting process has stria, the stifled bag of filter bag and the excessive problem of mortar pump load.
Description of drawings
Fig. 1 is the composition structural representation that the preparation solar cell silicon wafer of embodiments of the invention one cuts the equipment of mortar.
Embodiment
Specify the execution mode of embodiments of the invention below in conjunction with accompanying drawing.
Embodiment one
As shown in Figure 1; The equipment of the preparation solar cell silicon wafer of embodiments of the invention one cutting mortar comprises that they are used to heat polyethylene glycol as the boiler 11 of heat power supply device and boiler 12 with as the heat-exchangers of the plate type 4 of heat-exchange device; Its temperature is raise, and viscosity reduces.Wherein, the quantity of employed boiler and power can be adjusted according to the quantity of the actual polyethylene glycol that will heat, and can adopt polytype boiler, like vertical, horizontal fuel homogeneous solution-type reactor, vertical, horizontal fuel steam boiler etc.; Can also select other heat power supply devices except that boiler.Certainly, to one skilled in the art, heat-exchange device can be selected other forms of heat exchanger as required, like plate type regenerator group etc.
As shown in Figure 1, the top of heat-exchangers of the plate type 4 be provided with the water inlet 41 that is used for getting into hot water,, the bottom is provided with delivery port 42.Water inlet 41 is connected with boiler through pipeline respectively with delivery port 42; Wherein, be respectively equipped with valve 111 and valve 121 on boiler 11 and boiler 12 and the pipeline that the water inlet 41 of heat-exchangers of the plate type 4 is connected, valve 111 is used to regulate the speed that flows into the hot water in the heat-exchangers of the plate type 4 with valve 121; Hot water descends through temperature after the heat exchange with polyethylene glycol in heat-exchangers of the plate type 4; Flow out from delivery port 42, get back to boiler 11 and boiler 12, heat again through valve 123; Heated hot water gets into heat-exchangers of the plate type 4 by water inlet 41 again, so circulation.
As shown in Figure 1; In the heat-exchangers of the plate type 4, top is provided with the charging aperture 45 that is used to get into polyethylene glycol to be heated; Charging aperture 45 is through pipeline and the storage device that is used to store polyethylene glycol, and promptly the storage tank in the present embodiment 6 links to each other, and is provided with air pump 5 between charging aperture 45 and the storage tank 6; Air pump 5 is extracted polyethylene glycol to be heated out from storage tank 6, get in the heat-exchangers of the plate type 4 from charging aperture 45 through pipeline.The bottom of heat-exchangers of the plate type 4 is provided with the discharging opening 46 that is used to export the polyethylene glycol after the heating; Is the mortar a mixing bowl 7 the present embodiment from the polyethylene glycol through heating of discharging opening 46 outflows through valve 71 entering agitating devices, mixes the cutting mortar that is formed for the silicon chip cutting with mortar a mixing bowl 7 interior silicon carbide micro-powders.Valve 71 can be adjusted the speed of the polyethylene glycol inflow mortar a mixing bowl 7 after the heating.
In the embodiment shown in fig. 1, as medium, make hot water and polyethylene glycol in heat-exchangers of the plate type 4, carry out exchange heat, the polyethylene glycol through heat-exchangers of the plate type 4 is heated, have heating soon, the advantage that thermal loss is little through water.Through polyethylene glycol is effectively heated, improved the temperature of polyethylene glycol, can reach 40 degrees centigrade, reduced the viscosity of polyethylene glycol, its rotary viscosity is less than 60mPa.s.Polyethylene glycol after the heating can fully mix with carborundum; Improved dispersiveness and the suspension of solid particle in polyethylene glycol of carborundum; Make the cutting slurry density that is used for the silicon chip cutting that is mixed with stable; Reached the requirement of cutting solar cell silicon wafer, having solved silicon chip surface has stria, the stifled bag of filter bag, the excessive problem of mortar pump load.
Embodiment two
Embodiment two is with the difference of embodiment one, has increased by one and has been used to store the storage tank that reclaims polyethylene glycol.Wherein be respectively equipped with the pipeline of two polyethylene glycol in the heat-exchangers of the plate type 4, the top of each pipeline is charging aperture 45, and the bottom is a discharging opening 46.That is to say that when heat-exchangers of the plate type 4 was connected with two holding vessels, charging aperture 45 also was made as two with discharging opening 46, the storage tank of increase also is connected with a charging aperture 45 on heat-exchangers of the plate type 4 tops through an air pump.Like this; Heat-exchangers of the plate type 4 just is connected with the storage tank of two polyethylene glycol simultaneously, is primary polyethylene glycol in one of them storage tank, is the recovery polyethylene glycol in another storage tank; Only need a heat-exchangers of the plate type 4 just can heat two kinds of polyethylene glycol simultaneously; Through heating primary polyethylene glycol and recovery polyethylene glycol simultaneously, flow out through discharging opening 46 respectively, in mortar a mixing bowl 7, mix with the carborundum solid.The ratio of primary polyethylene glycol and recovery polyethylene glycol can be controlled by the valve 71 between discharging opening 46 and the mortar a mixing bowl 7, because it is lower to reclaim the price of polyethylene glycol, thereby has reduced production cost.Certainly; Can also only establish the pipeline of a polyethylene glycol in the heat-exchangers of the plate type 4; Just be provided with two charging apertures 45 simultaneously, be connected with two storage tanks through air pump respectively, so just mix the back to primary polyethylene glycol by a certain percentage with the recovery polyethylene glycol and heat at heat-exchangers of the plate type 4; Flow out through same discharging opening 46, get into mortar a mixing bowl 7.In this case, the ratio of primary polyethylene glycol and recovery polyethylene glycol can be by 5 controls of the air pump between charging aperture 45 and the storage tank.
Certainly, the above is a preferred implementation of the present invention, should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also are regarded as protection scope of the present invention.
Claims (5)
1. an equipment of preparing solar cell silicon wafer cutting mortar is characterized in that, comprises the agitating device that is used to heat the heat power supply device and the heat-exchange device of polyethylene glycol and is used for the said polyethylene glycol after the heating is mixed with carborundum;
The top of said heat-exchange device is provided with the water inlet that is used to get into hot water, and the bottom of said heat-exchange device is provided with delivery port, and said water inlet is connected with said heat power supply device through pipeline respectively with delivery port;
The top of said heat-exchange device is provided with the charging aperture that is used to get into polyethylene glycol to be heated, and the bottom of said heat-exchange device is provided with the discharging opening that is used to export the polyethylene glycol after the heating, and said discharging opening is connected with said agitating device.
2. the equipment of preparation solar cell silicon wafer cutting mortar as claimed in claim 1; It is characterized in that; Also comprise the storage device that is used to store polyethylene glycol to be heated; Said storage device is connected with charging aperture on the said heat-exchange device, also is provided with air pump between said charging aperture and the storage device.
3. the equipment of preparation solar cell silicon wafer cutting mortar as claimed in claim 2 is characterized in that said charging aperture and storage device are respectively two, and each said charging aperture is connected with a said storage device respectively.
4. the equipment of preparation solar cell silicon wafer cutting mortar as claimed in claim 1 is characterized in that said heat-exchange device is a heat-exchangers of the plate type.
5. the equipment of preparation solar cell silicon wafer cutting mortar as claimed in claim 1 is characterized in that said heat power supply device is a boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100709457A CN102694058A (en) | 2011-03-23 | 2011-03-23 | Device for preparing solar cell silicon chip cutting mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100709457A CN102694058A (en) | 2011-03-23 | 2011-03-23 | Device for preparing solar cell silicon chip cutting mortar |
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| Publication Number | Publication Date |
|---|---|
| CN102694058A true CN102694058A (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100709457A Pending CN102694058A (en) | 2011-03-23 | 2011-03-23 | Device for preparing solar cell silicon chip cutting mortar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627369A (en) * | 2013-12-11 | 2014-03-12 | 兴化市台林机械有限公司 | Abrasive paste and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6231628B1 (en) * | 1998-01-07 | 2001-05-15 | Memc Electronic Materials, Inc. | Method for the separation, regeneration and reuse of an exhausted glycol-based slurry |
| WO2010071873A2 (en) * | 2008-12-20 | 2010-06-24 | Cabot Microelectronics Corporation | Wiresaw cutting method |
| CN101940973A (en) * | 2010-09-09 | 2011-01-12 | 常州工程职业技术学院 | Sand mill |
| CN202030725U (en) * | 2011-03-23 | 2011-11-09 | 镇江荣德新能源科技有限公司 | Device fore preparing solar cell silicon wafer cutting sand pulp |
-
2011
- 2011-03-23 CN CN2011100709457A patent/CN102694058A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6231628B1 (en) * | 1998-01-07 | 2001-05-15 | Memc Electronic Materials, Inc. | Method for the separation, regeneration and reuse of an exhausted glycol-based slurry |
| WO2010071873A2 (en) * | 2008-12-20 | 2010-06-24 | Cabot Microelectronics Corporation | Wiresaw cutting method |
| CN101940973A (en) * | 2010-09-09 | 2011-01-12 | 常州工程职业技术学院 | Sand mill |
| CN202030725U (en) * | 2011-03-23 | 2011-11-09 | 镇江荣德新能源科技有限公司 | Device fore preparing solar cell silicon wafer cutting sand pulp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627369A (en) * | 2013-12-11 | 2014-03-12 | 兴化市台林机械有限公司 | Abrasive paste and preparation method thereof |
| CN103627369B (en) * | 2013-12-11 | 2018-07-06 | 兴化市台林机械有限公司 | Abrasive pastes and preparation method thereof |
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Application publication date: 20120926 |