CN102500458A - Sand washing method and special device thereof - Google Patents
Sand washing method and special device thereof Download PDFInfo
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- CN102500458A CN102500458A CN2011103827084A CN201110382708A CN102500458A CN 102500458 A CN102500458 A CN 102500458A CN 2011103827084 A CN2011103827084 A CN 2011103827084A CN 201110382708 A CN201110382708 A CN 201110382708A CN 102500458 A CN102500458 A CN 102500458A
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Abstract
The invention discloses a sand washing method, which comprises following steps: sand filling, washing, or/and pickling or/and alkali washing, deionized water cleaning, sand storage and the like. The invention further discloses a special device for the sand washing method. The sand washing device comprises a sand column tube and a water tank, the sand column tube is divided into a water inlet buffering area, a sand column area and an overflow area according to a water flowing direction, the water inlet buffering area is separated from the sand column area via four water distribution caps which are annularly uniformly distributed, a cylindrical buffering device is mounted on the water inlet buffering area, an inner cylinder of the cylindrical buffering device is in through connection with a water outlet of the water tank via a water delivery pipe, the overflowing area is provided with an overflowing pipe, a water outlet of the overflowing pipe is suspended above a liquid inlet of the water tank, and a filtering screen is mounted at the liquid inlet of the water tank. By the aid of organic combination of the deionized water cleaning, the pickling and the alkali washing to sand, metal ions, colloid particles, microorganisms and other impurities in the sand are effectively removed.
Description
Technical field
The present invention relates to a kind of method for determining sand and isolated plant thereof washed, belong to hydraulic engineering, environmental project and field of ocean engineering.
Background technology
When doing the experiment of environment silt,, need very clean silt usually in order to arrive the purpose of experiment.And, need design one cover reasonably device and method of operating in order to remove impurity and the adsorbate that carries in the silt.
In practice in the past, when doing the experiment of above-mentioned silt, adopt artificial method that silt is cleaned usually.At the silt amount ratio hour, directly adopt manual method to clean the purpose that can reach experiment; But when experiment in tank need be used a large amount of silt, it is special big that the workload of washing silt just becomes.In order to practice thrift manpower and time, adopt running water simply to wash usually, with earth and the floating foreign material in the removal silt, but be difficult to remove metal, colloid, microorganism and other foreign material that adsorb in the silt.Because it is clean inadequately that silt cleans, tend to cause poor effect or the failure of an experiment of entire environment silt experiment.
Summary of the invention
Goal of the invention: the objective of the invention is to the deficiency to prior art, a kind of husky effective method for determining sand of washing of washing is provided.
Another object of the present invention is to provide this special-purpose device of method for determining sand of washing.
Technical scheme: the method for determining sand of washing of the present invention comprises the steps:
(1) dress is husky: silt to be cleaned is packed into wash in the dust devil;
(2) washing: with deionized water from the lower end of washed-out sand post to upper end wash cycles 3～5 times, every all over cleaning 30～60 minutes, remove impurity and colloidal solid; Or/and,
Pickling: to use pH value be 3～4 acid solution from the lower end of washing dust devil to upper end wash cycles 8～12 hours, removes metal ion; Or/and,
Alkali cleaning: to use pH value be 10～11 aqueous slkali from the lower end of washing dust devil to upper end wash cycles 8～12 hours, removes colloid, microorganism and other impurity;
(3) washed with de-ionized water: after pickling and alkali cleaning, adopt respectively deionized water from the lower end of washing dust devil to upper end wash cycles 2～5 times, every all over cleaning 30～60 minutes;
(4) silt stores: the silt behind the deionized water rinsing is taken out for husky mouthful from washing getting of dust devil bottom, be stored in the chest that deionized water is housed.
The step of above-mentioned steps (two) washing, pickling and alkali cleaning according to the kind of different silt to be cleaned, is selected wherein one or more, to remove the various impurity that contained in the silt to be cleaned pointedly.
If silt to be cleaned is the silt of adsorbing metal ions, because metal ion is rich on husky surface, therefore, before pickling, the employing pH value is 3～4 acid solution, and the silt of agitation soaked 24～48 hours, used washed with de-ionized water then 1 time.
If silt to be cleaned is the silt of surface attachment colloid, because husky surface adsorption a large amount of colloids, therefore, before alkali cleaning, the employing pH value is 10～11 aqueous slkali, and the silt of agitation soaked 24～48 hours, used washed with de-ionized water then 1 time.
In the above-mentioned steps (four), when getting sand, close the dust devil water intaking valve earlier, extract again and get husky mouthful stopper, utilize the water in the dust devil to flow downward, discharge silt; When the water in the dust devil has been arranged, also have a lot of silts not take out in the dust devil, heat water valve again, current flow out through getting husky mouthful, take residual silt out of.
Consider that the concentration of at every turn washing husky initial contaminants in drainage or solute is relatively large, so wash the water that beach volleyball goes out initial " high concentration " at every turn.In order to seek optimum draining; Just guarantee the identical husky effect of washing; Make wash husky minimum with the total water amount in total time, washing in the step (two), the overflow pipe through washing the dust devil upper end when first pass washed with de-ionized water begins is with outside the preceding 6 minutes water discharge circulation; When beginning, all the other every time washed with de-ionized water preceding 3 minutes water is discharged outside the circulation through the overflow pipe of washing the dust devil upper end.
According to the inventionly wash husky isolated plant, comprise that water tank, water pump and lucite wash dust devil, said water tank is washed dust devil with said water pump with said lucite successively through water pipe and is connected; Said lucite is washed dust devil and is divided into into water buffering area, dust devil district and overflow according to water (flow) direction; Said water inlet buffering area is distributed in said lucite and washes dust devil bottom; Its water inlet is provided with porous lucite tube buffer; Current can effectively reduce directly washing away of current through porous lucite tube buffer, make current steadily get into lucite and wash dust devil; Two above water distribution caps that are uniformly distributed with through annular between said water inlet buffering area and the said dust devil district at interval; Be preferably and adopt 4 0.5T/h water distribution caps; When current got into lucite and wash dust devil, through 4 0.5T/h water distribution caps, current were divided equally with the lucite lucite and are washed the dust devil bottom; Can make lucite wash dust devil and reach drift sand state preferably, reach the desirable husky effect of washing; Said dust devil district is distributed in the middle part that said lucite is washed dust devil, is used for holding silt to be cleaned; Said overflow is distributed in said lucite and washes the dust devil upper end; The exit of overflow is provided with overflow pipe; The outlet of said overflow pipe is suspended at the inlet top of water tank, and current and the colloid that cleans out, microorganism and other impurity are discharged through overflow pipe; The inlet of said water tank is equipped with three layers of nylon net filter net, and comparative optimization ground, said screen pack are respectively 100 orders, 400 orders and 800 orders.This screen pack can effectively be tackled particle and other impurity in the sand; When tackling more particle or impurity in the nylon wire, can conveniently lift down the water flushing; Can repetitive cycling use, practice thrift cost.
Regulate lucite for ease and wash the feed liquor amount in the dust devil, said water pump and said lucite are washed and are provided with flow control valve and dust devil draining valve between the dust devil.
Said for ease lucite is washed dust devil and is moved, and the bottom that said lucite is washed dust devil is equipped with the chassis, and the bottom on chassis is equipped with roller.
The top that said lucite is washed dust devil is provided with a lid, and the water that contains soda acid that prevents to be placed in the cleaning spills.
For the silt that keeps the dust devil district does not flow out from overflow pipe, the height of said overflow is 1～2cm.
Beneficial effect:
1, apparatus of the present invention can be cleaned silt automatically, wherein at the water inlet buffering area tubular lucite tube buffer are installed, and get into the water flow impact pressure that lucite is washed dust devil greatly to reduce; Separated at the water inlet buffering area through 4 water distribution cap and dust devil differentiation that annular is uniformly distributed with, make silt in the dust devil pipe, to produce good drift sand state, wash husky effective; Through the adjustment flow control valve, make the silt in the dust devil pipe be in best fluidized state, some fine sediments and impurity flow out from overflow pipe, keep drift sand not discharge from overflow pipe simultaneously, and fluidisation silt is apart from overflow pipe 1～2cm.
2, the delivery port of overflow pipe is suspended at the inlet top of water tank, at the inlet mounting filtering net of water tank, makes apparatus of the present invention become a backwater circulation system simultaneously, energy savings reduces experiment simultaneously and takes up an area of the space; This screen pack can effectively be tackled particle and other impurity in the sand; When tackling more particle or impurity in the nylon wire, can conveniently lift down the water flushing; Can repetitive cycling use, practice thrift cost.
3, the inventive method can be directed against different silt to be cleaned, adopts different cleaning ways, to remove various impurity contained in the silt to be cleaned pointedly, easily and effectively:
Be the silt through slightly washing for silt to be cleaned, the present invention uses washed with de-ionized water earlier, to remove impurity and colloidal solid wherein, then adopts pickling, is adsorbed on husky surperficial metal with desorb, reaches the purpose of removing metal in the sand; Adopt alkali cleaning then,, reach the purpose of removing colloidal solid and microorganism to decompose the colloid and the microorganism on husky surface;
For silt to be cleaned is the silt of adsorbing metal ions, because husky surface is rich in metal ion, therefore, it is that 3～4 acid solution soaked 1～2 day that the present invention uses pH value earlier, is adsorbed on the lip-deep metal of bed material with removing more effectively;
For silt to be cleaned is the silt of surface attachment colloid, because a large amount of colloids of husky surface attachment, therefore, it is 10～11 aqueous slkali soaking 1～2 day that the present invention uses the pH value earlier, more effectively to remove attached to the lip-deep colloid of bed material.
Description of drawings
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is among the embodiment 2, and water discharge time is to washing the curve map of husky influential effect: wherein,
Fig. 2-a is not directly outwards draining of overflow water management, the variation diagram that electricity is led in the dust devil that silt carries out cleaning for four times successively;
Fig. 2-b is through the directly outside draining of overflow water management 2 minutes, the variation diagram that electricity is led in the dust devil that silt carries out cleaning for four times successively;
Fig. 2-c is through the directly outside draining of overflow water management 3 minutes, the variation diagram that electricity is led in the dust devil that silt carries out cleaning for three times successively;
Fig. 2-d is through the directly outside draining of overflow water management 4 minutes, the variation diagram that electricity is led in the dust devil that silt carries out cleaning for three times successively;
Fig. 2-e is a silt when carrying out cleaning for the 2nd time, the overflow water management directly outwards the water discharge time difference to the figure that influences of silt cleaning performance;
Fig. 2-f is a silt when carrying out cleaning for the 3rd time, the overflow water management directly outwards the water discharge time difference to the figure that influences of silt cleaning performance.
The specific embodiment
Be elaborated in the face of technical scheme of the present invention down, but protection scope of the present invention is not limited to said embodiment.
Embodiment 1: as shown in Figure 1, the present invention washes husky isolated plant, comprises that water tank 1, water pump 2 and lucite wash dust devil 3, and said water tank 1 is washed dust devil 3 with said water pump 2 and said lucite successively through water pipe and is connected; Said lucite is washed the dust devil 3 high 160cm of being, internal diameter is 19cm, each 40Kg silt capable of washing; Said lucite is washed dust devil and is divided into into water buffering area 3-1, dust devil district 3-2 and overflow 3-3 according to water (flow) direction; Said water inlet buffering area 3-1 is distributed in said lucite and washes dust devil 3 bottom, and its water inlet is provided with porous lucite tube buffer 4; 4 the 0.5T/h water distribution caps 5 that are uniformly distributed with through annular between said water inlet buffering area 3-1 and the said dust devil district 3-2 at interval; When current entering lucite is washed dust devil 3; Through 4 0.5T/h water distribution caps 5; Current are divided equally with the lucite lucite and are washed the dust devil bottom, can make lucite wash dust devil and reach drift sand state preferably, reach the desirable husky effect of washing; Said dust devil district 3-2 is distributed in the middle part that said lucite is washed dust devil 3, is used for holding silt to be cleaned; Said overflow 3-3 is distributed in said lucite and washes dust devil 3 upper ends; The height of said overflow is 2cm; The exit of overflow is provided with overflow pipe 6; The outlet of said overflow pipe 6 is suspended at the inlet top of water tank 1, and current and the colloid that cleans out, microorganism and other impurity are discharged through overflow pipe; The inlet of said water tank 1 is equipped with three layers of nylon net filter net 7, and said screen pack 7 is respectively 100 orders, 400 orders and 800 orders, holds back and discharges the impurity of particle diameter greater than 18 μ m in the overflow pipe.The nylon cloth nail is on the square wooden frame of interior length of side 48cm, outer length of side 52cm.When tackling more particle or impurity in the nylon wire, can conveniently lift down the water flushing; Can repetitive cycling use, practice thrift cost; Said water pump 2 and said lucite are washed and are provided with flow control valve 8 and dust devil draining valve 9 between the dust devil 3; The top that said lucite is washed dust devil is provided with a lid 12, and the water that contains soda acid that prevents to be placed in the cleaning spills; The bottom sides of dust devil district 3-2 is provided with gets husky mouthful 13, is used to take out the silt that cleaned; The bottom that said lucite is washed dust devil 3 is equipped with chassis 10, and the bottom on chassis 10 is equipped with roller 11.
Embodiment 2: the present invention is directed to different silt to be cleaned, adopt different cleaning ways, removing various impurity contained in the silt to be cleaned pointedly, present embodiment specifically comprises the steps: to be example through the silt slightly washed
(1) dress is husky: with silt to be cleaned, pack into and wash in the dust devil;
(2) (2-1) washing: with deionized water from the lower end of washed-out sand post to upper end wash cycles 4 times, every all over cleaning 45 minutes, remove impurity and colloidal solid; Because initial impurity is more, washes husky effect for reaching optimum, manages outside draining 6 minutes through overflow water when beginning for the first time, all the other manage outside draining 3 minutes through overflow water when beginning.
In water tank, add the 100L deionized water at every turn.Consider that the concentration of at every turn washing husky initial contaminants in drainage or solute is relatively large, so wash the water that beach volleyball goes out initial " high concentration " at every turn.In order to seek optimum draining, just guarantee the identical husky effect of washing, make and wash sand in total time and total water amount minimum, the present invention uses different water discharge times after washing through the aqueous slkali that 600 μ s/cm electricity are led, and seeks the optimum husky mode of washing.After discharging the water of the scheduled time, the water of from overflow pipe, discharging flows to water tank, forms the circulatory system of sealing, and lead from overflow water mouth of pipe sampling and measuring electricity every interval 3 or 5 minutes, and the decline that electricity is led shows that water quality takes a favorable turn.
The 3-4 that a-d figure representes different water discharge times among Fig. 2 has also reflected the change in concentration of alkali in the lucite washed-out sand post all over washing the variation that electricity is led in the lucite washed-out sand post.Beginning, the concentration of the alkali in the lucite washed-out sand post descends very fast, presents ascendant trend slightly afterwards, and this possibly be because the result that the alkali in the gully on husky surface slowly discharges; Also can find out whenever wash one time all can than last one time good.But along with the increase of number of times, washing husky effect will be on a declining curve.Draining 3 minutes is better than 2 minutes effects of draining, and draining 2 minutes is than drainage effect is not good; 3 minutes the 3rd time water quality of draining has just surpassed not the 4th time water of draining, and this mode has just been practiced thrift 25% time and 25% water consumption, and reaches the extraordinary husky effect of washing.Can find out the husky effect of washing that husky effect is better than draining 4 minutes of washing of draining 3 minutes from Fig. 2-e and Fig. 2-f figure, this possibly be that concentration just became relatively large when water discharged in the surperficial gully of sand because falling under water in 4 minutes rear water boxs of row is more.Therefore optimal water discharge time is 3 minutes.The metal zinc-copper absorption content that the sand of not washing records is respectively 0.649mg/kg and 0.204mg/kg; The zinc-copper absorption content that records after washing is respectively 0.025mg/kg and 0.010mg/kg; Can find out through top mode and wash sand, effect is very good, can satisfy the metal ion experimental requirements.
(2-2) pickling: using pH value is that 3.5 acid solution was washed 8 hours, and desorb is adsorbed on the metal on husky surface, the metal in the removal silt; With deionized water from the lower end of washing dust devil to upper end circulation flushing 2 times, whenever be about 45 minutes all over the time, clean the metal ion and the acid solution that desorb;
(2-3) alkali cleaning: using the pH value is that 10.5 aqueous slkalis were washed 8 hours, decomposes in lip-deep colloid of sand and microorganism, removes colloidal solid and microorganism; With deionized water rinsing 4 times, whenever be about 45 minutes all over the time, clean the colloid and the aqueous slkali that decompose out.
(3) silt stores: the silt behind the deionized water rinsing is taken out for husky mouthful from washing getting of dust devil bottom, be stored in the chest that deionized water is housed; When getting sand, close the dust devil water intaking valve earlier, extract again and get husky mouthful stopper, utilize the water in the dust devil to flow downward, discharge silt; When the water in the dust devil has been arranged, also have a lot of silts not take out in the dust devil, heat water valve again, current flow out through getting husky mouthful, take residual silt out of.
Embodiment 3: present embodiment is an example with the cleaning that the adsorption of metal ions experiment finishes the back bed material, specifically comprises the steps:
(1) dress is husky: silt to be cleaned is packed into wash in the dust devil;
(2) pickling: after carrying out adsorption of metal ions experiment, the bed material surface adsorption certain metal ion, be adsorbed on the lip-deep metal of bed material in order more effectively to remove, using pH value is 3.5 acid solution immersion 2 days; Use washed with de-ionized water again 1 time, the time is about 1 hour; At last, using pH value is that 3 acid solution was washed 12 hours, and desorb is adsorbed on the metal on husky surface, the metal in the removal silt;
(3) washed with de-ionized water: after pickling, adopt deionized water from the lower end of washing dust devil to upper end wash cycles 4 times, whenever be about 45 minutes all over the time, clean the metal ion and the acid solution that desorb;
(4) silt stores: the silt behind the deionized water rinsing is taken out for husky mouthful from washing getting of dust devil bottom, be stored in the chest that deionized water is housed; When getting sand, close the dust devil water intaking valve earlier, extract again and get husky mouthful stopper, utilize the water in the dust devil to flow downward, discharge silt; When the water in the dust devil has been arranged, also have a lot of silts not take out in the dust devil, heat water valve again, current flow out through getting husky mouthful, take residual silt out of.
Embodiment 4: present embodiment is an example with the cleaning that colloid migration experiment finishes the back bed material, specifically comprises the steps:
(1) dress is husky: silt to be cleaned is packed into wash in the dust devil;
(2) alkali cleaning: after carrying out colloid migration experiment, the bed material surface attachment certain colloid.These attachments have changed the surface nature of bed material, therefore must remove.In order more effectively to remove attached to the lip-deep colloid of bed material, being put into the pH value to silt is to soak 2 days in 10.5 the aqueous slkali; With washed with de-ionized water 1 time, the time is about 1 hour; Using pH value is that 11 aqueous slkali was washed 12 hours, decomposes the lip-deep colloid of silt, the removal colloidal solid;
(3) washed with de-ionized water: after alkali cleaning, adopt deionized water from the lower end of washing dust devil to upper end wash cycles 4 times, whenever be about 45 minutes all over the time, clean the colloid and the aqueous slkali that decompose out;
(4) silt stores: the silt behind the deionized water rinsing is taken out for husky mouthful from washing getting of dust devil bottom, be stored in the chest that deionized water is housed, when getting sand; Close the dust devil water intaking valve earlier; Extract again and get husky mouthful stopper, utilize the water in the dust devil to flow downward, discharge silt; When the water in the dust devil has been arranged, also have a lot of silts not take out in the dust devil, heat water valve again, current flow out through getting husky mouthful, take residual silt out of.
As stated, although represented and explained the present invention that with reference to specific preferred embodiment it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite that does not break away from the accompanying claims definition, can make various variations in form with on the details to it.
Claims (10)
1. wash method for determining sand for one kind, it is characterized in that comprising the steps:
(1) dress is husky: silt to be cleaned is packed into wash in the dust devil;
(2) washing: with deionized water from the lower end of washed-out sand post to upper end wash cycles 3～5 times, every all over cleaning 30～60 minutes, remove impurity and colloidal solid; Or/and,
Pickling: to use pH value be 3～4 acid solution from the lower end of washing dust devil to upper end wash cycles 8～12 hours, removes metal ion; Or/and,
Alkali cleaning: to use pH value be 10～11 aqueous slkali from the lower end of washing dust devil to upper end wash cycles 8～12 hours, removes colloid, microorganism and other impurity;
(3) washed with de-ionized water: after pickling and alkali cleaning, adopt respectively deionized water from the lower end of washing dust devil to upper end wash cycles 2～5 times, every all over cleaning 30～60 minutes;
(4) silt stores: the silt behind the deionized water rinsing is taken out for husky mouthful from washing getting of dust devil bottom, be stored in the chest that deionized water is housed.
2. the method for determining sand of washing according to claim 1 is characterized in that: in the step (two), and the silt after experiment finishes for metal ion transport; Before pickling; The employing pH value is 3～4 acid solution, and the silt of agitation soaked 24～48 hours, used washed with de-ionized water then 1 time.
3. the method for determining sand of washing according to claim 1 is characterized in that: in the step (two), for the silt after the colloid migration experiment end; Before alkali cleaning; The employing pH value is 10～11 aqueous slkali, and the silt of agitation soaked 24～48 hours, used washed with de-ionized water then 1 time.
4. the method for determining sand of washing according to claim 1 is characterized in that: washing in the step (two), and when beginning, the first pass washed with de-ionized water preceding 6 minutes water is discharged outside the circulation through the overflow pipe of washing the dust devil upper end; When beginning, all the other every time washed with de-ionized water preceding 3 minutes water is discharged outside the circulation through the overflow pipe of washing the dust devil upper end.
5. the method for determining sand of washing according to claim 1 is characterized in that: in the step (four), when getting sand, close the dust devil water intaking valve earlier, extract and get husky mouthful stopper, utilize the water in the dust devil to flow downward, discharge silt; When the water in the dust devil has been arranged, also have a lot of silts not take out in the dust devil, heat water valve again, current flow out through getting husky mouthful, take residual silt out of.
6. wash husky isolated plant for one kind, it is characterized in that: comprise that water tank, water pump and lucite wash dust devil, said water tank is washed dust devil with said water pump with said lucite successively through water pipe and is connected; Said lucite is washed dust devil and is divided into into water buffering area, dust devil district and overflow according to water (flow) direction; Said water inlet buffering area is distributed in said lucite and washes dust devil bottom, and its water inlet is provided with porous lucite tube buffer, four water distribution caps that are uniformly distributed with through annular between said water inlet buffering area and the said dust devil district; Said dust devil district is distributed in the middle part that said lucite is washed dust devil, is used for holding silt to be cleaned; Said overflow is distributed in said lucite and washes the dust devil upper end, and the exit of overflow is provided with overflow pipe, and the outlet of said overflow pipe is suspended at the inlet top of water tank; The inlet of said water tank is equipped with three layers of nylon net filter net.
7. according to claim 6ly wash husky isolated plant, it is characterized in that: said water pump and said lucite are washed and are provided with flow control valve and dust devil draining valve between the dust devil.
8. according to claim 6ly wash husky isolated plant, it is characterized in that: the bottom that said lucite is washed dust devil is equipped with the chassis, and the bottom on chassis is equipped with roller.
9. according to claim 6ly wash husky isolated plant, it is characterized in that: said screen pack is respectively 100 orders, 400 orders and 800 orders.
10. according to claim 6ly wash husky isolated plant, it is characterized in that: said water distribution cap is 4 0.5T/h water distribution caps.
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| CN102978800A (en) * | 2012-11-28 | 2013-03-20 | 吴江市科时达纺织有限公司 | Water tank of water-jet loom |
| CN103341401A (en) * | 2013-06-05 | 2013-10-09 | 云南文山铝业有限公司 | Ore washing and dressing device |
| CN103743879A (en) * | 2013-12-31 | 2014-04-23 | 河海大学 | Experimental simulation operation method for pollutant transportation under abrupt pollution accident |
| CN107335533A (en) * | 2016-11-22 | 2017-11-10 | 河南沐桐环保产业有限公司 | A kind of wet concentration piece-rate system |
| CN107442265A (en) * | 2017-08-16 | 2017-12-08 | 南通普瑞特机械有限公司 | A kind of sandblasting separation cleaning device |
| CN107626654A (en) * | 2017-10-31 | 2018-01-26 | 周晓飞 | A kind of architectural engineering is with washing husky device |
| CN112007902A (en) * | 2020-09-04 | 2020-12-01 | 贵州省分析测试研究院 | Method for removing adsorbate on natural sediment |
| CN113394136A (en) * | 2021-05-20 | 2021-09-14 | 安徽芯旭半导体有限公司 | Chip cleaning device |
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