CN102756073B - Water glass old sand refurbishing equipment and process thereof for refurbishing old sand - Google Patents
Water glass old sand refurbishing equipment and process thereof for refurbishing old sand Download PDFInfo
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- CN102756073B CN102756073B CN201210172750.8A CN201210172750A CN102756073B CN 102756073 B CN102756073 B CN 102756073B CN 201210172750 A CN201210172750 A CN 201210172750A CN 102756073 B CN102756073 B CN 102756073B
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Abstract
The invention relates to equipment for refurbishing water glass old sand, in particular to comprehensive equipment for refurbishing water glass old sand by adopting crushing equipment, screening equipment, stripping equipment and classifying equipment. The equipment comprises a feeding device and further comprises a fine crusher, a screening machine, a stripping machine, a classifying machine and a belt type dust collector, wherein the feeding device is abutted with the fine crusher; the fine crusher is communicated with the screening machine through a bucket type elevator; the screening machine is communicated with a chute and is simultaneously communicated with the stripping machine; the stripping machine is communicated with the classifying machine; a gravity type lock wind discharge valve I is arranged at the bottom of the classifying machine; and the classifying machine is also communicated with the belt type dust collector. Compared with a traditional production process for washing and refurbishing by adopting a wet method, the production process is small in floor space, is less affected by weather and simultaneously causes no pollution to water resources. Compared with another advanced production process for refurbishing the water glass old sand by adopting a dry method, the process has the advantages of simple process flow, low investment and small floor space.
Description
Technical field
The equipment that the present invention relates to a kind of used sodium silicate sand renovation, is specifically related to a kind of package that adopts disintegrating apparatus, screening plant, peel-off device, classifying equipoment to carry out used sodium silicate sand renovation.
Background technology
Water-glass sand is a kind of moulding, the core manufacturing craft of Foundry Works in castings production process.Water-glass sand is that by pure artificial or natural siliceous sand, to add 4.5%～8.0% waterglass chemical molecular formula be Na
2omSiO
2formulated.
China will discharge the above cast used sand of millions of tons every year, because discarded old sand is alkalescence, stack part not even a blade of grass grows, caused to a great extent the pollution of environment.And perfect along with a series of mining structures of the law, the phenomenon of disorderly opening quartz sand has also obtained effective containment.Make casting with constantly the skyrocketing of quartz sand price, cause recovery and reuse that most of traditional sand casting enterprises have to take measures to realize old sand renovation to reduce production costs, and the pollution of minimizing to environment.
Waterglass sand grains remained on surface after casting is used has Na
2o coating, must cause too much Na while using with the mixed system of fresh sand secondary
2the accumulation of O coating, the Na on sand grains top layer
2o coating can worsen refractoriness and the gas permeability of sand, causes foundry goods to occur the casting flaws such as scab, sand washing, pore.Used used sodium silicate sand is as just again utilized without peeling renovation simultaneously, oxide in residual old sand is too much, also can reduce refractoriness and gas permeability, sometimes even can form on surface large, thick foundry goods molten vitreum cinder hole, cinder hole too much directly can cause the foundry goods later stage cannot take other remedial measure directly to cause scrapping of foundry goods.
On present society, the technique of used sodium silicate sand renovation has following two kinds, and a kind of is the production technology that traditional wet method washing is renovated, and wet method water-washing process cardinal principle is the Na that makes old sand grain top layer
2o coating is dissolved in water, thereby realizes the recycling of old sand renovation.This production technology is relatively simple, in production process due to the Na on old sand grain top layer
2o coating is dissolved in water, and the water that makes discharge after washing is the alkaline pollution that has caused again water.Simultaneously airing old sand place area occupied is larger, and the impact of climate is also large, and some small business from far-off regions are also adopting, but very inapplicable for the relatively flourishing large and medium-sized enterprise of economy.Another kind is the production technology that adopts advanced used sodium silicate sand dry method renovation.Though this production technology effect is good, up-front investment is larger, and production line floor space is also large, and energy consumption is also high, is mainly applicable to large-scale foundry enterprise.For this situation, our company has researched and developed a set of economy, applicable used sodium silicate sand renovates production equipment for this reason, this production technology small investment, and floor space is also little, is the ideal chose of middle-size and small-size foundry enterprise old sand renovation.
Summary of the invention
The object of the invention is to customer service deficiency of the prior art and provide a kind of investment little, it is little that production line takes up an area face, the old sand refreshing appliance that energy consumption is low.
The object of the present invention is achieved like this:
A kind of used sodium silicate sand refreshing appliance, comprise feed arrangement, this refreshing appliance also comprises fine crusher, screening machine, stripping machine, grader, belt dust-precipitator, described feed arrangement docks with fine crusher, and this fine crusher is communicated with screening machine by bucket elevator, and screening machine is communicated with chute, screening machine is communicated with stripping machine again simultaneously, this stripping machine is communicated with grader, and grader bottom is provided with gravity type lock wind discharge valve one, and described grader is communicated with belt dust-precipitator again.
Described feed arrangement comprises feeding conveyer belt, raw material cabin, and described feeding conveyer belt docks with raw material cabin, and described raw material cabin lower part outlet connects belt feeder, and belt feeder docks with fine crusher.
Between described screening machine and stripping machine, be provided with the intermediate bunker that stores old sand for temporary transient, under intermediate bunker, outlet is communicated with revolving plow reclaimer, and revolving plow reclaimer is communicated with stripping machine.
Between described intermediate bunker and revolving plow reclaimer, be provided with gate.
The lower end of described belt dust-precipitator is provided with gravity type lock wind discharge valve 2 15.
Described chute is for to be greater than the impurity particle of 2mm, the groove shape structure that old sand particle is transported to ground by particle diameter.
Described screening machine is that sieve diameter is the linear vibrating screen of 2mm.
A used sodium silicate sand renovation technology, its technique is as follows:
1) remained on surface is had to Na
2the old sand raw material of O coating passes through fine crusher Na for the first time
2o coating broken apart, controls the old sand particle that granularity is greater than 2mm and accounts for below 10%, is delivered in screening machine after separation;
2) by screening machine, old sand particle is sieved, impurity particle, old sand particle that particle diameter is greater than 2mm are transported to ground, and the old sand particle that particle diameter is less than 2mm enters in stripping machine;
3) in stripping machine, carry out the Na of old sand particle surface for the second time
2the fragmentation of O coating is peeled off, and guarantees most of removal of Na2O coating of old sand particle surface, then enters in grader;
4), in grader, granularity is less than the Na being stripped from of 0.075mm
2o coating and particle are inhaled in belt dust-precipitator, and granularity is greater than 0.075mm and is less than the qualified particle of 2mm by the gravity type lock wind discharge valve one discharge grader outside of grader bottom.
1) in step, feeding conveyer belt is delivered to old sand raw material in raw material cabin, then the belt feeder connecting through raw material cabin lower part outlet is delivered in fine crusher, is delivered to screening in screening machine again after in small, broken bits through bucket elevator.
2) in, impurity particle, old sand particle that particle diameter after screening machine screening is greater than 2mm are delivered to bottom surface by chute, the old sand particle that particle diameter is less than 2mm is introduced in intermediate bunker, then through the revolving plow reclaimer being communicated with outlet under intermediate bunker, enters into stripping machine.
The present invention has advantages of as follows:
Reclaimed sand after this process system is produced shows in the formulation optimization experiment of the technological experiment for sodium silicate binder type (core) sand, in reclaimed sand addition, be 100%, waterglass addition be 5% and the carbon dioxide gassing time process conditions that are 10s under, the compression strength of molding sand is greater than 0.9Mpa, can reach the requirement of production, this regeneration old sand can replace most new sand molding, coremaking completely.
The production technology of the more traditional wet method of this production technology washing renovation has that floor space is little, climate impact is also little, does not also cause the pollution to water source simultaneously.The production technology of more another kind of advanced person's used sodium silicate sand dry method renovation has that technological process is simple, small investment, advantage that floor space is few.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
Below in conjunction with concrete embodiment, the invention will be further described.
As shown in 1, a kind of used sodium silicate sand refreshing appliance, comprise feed arrangement, this refreshing appliance also comprises fine crusher 4, screening machine 6, stripping machine 11, grader 12, belt dust-precipitator 14, described feed arrangement docks with fine crusher 4, this fine crusher 4 is communicated with screening machine 6 by bucket elevator 5, screening machine 6 is communicated with chute 7, screening machine 6 is communicated with stripping machine 11 again simultaneously, this stripping machine 11 is communicated with grader 12, grader 12 bottoms are provided with gravity type lock wind discharge valve 1, and described grader 12 is communicated with belt dust-precipitator 14 again.
Described feed arrangement comprises feeding conveyer belt 1, raw material cabin 2, and described feeding conveyer belt 1 docks with raw material cabin 2, and described raw material cabin 2 lower part outlets connect belt feeder 3, and belt feeder 3 docks with fine crusher 4.
Between described screening machine 6 and stripping machine 11, be provided with the intermediate bunker 8 that stores old sand for temporary transient, 8 times outlets of intermediate bunker are communicated with revolving plow reclaimer 10, and revolving plow reclaimer 10 is communicated with stripping machine 11.
Between described intermediate bunker 8 and revolving plow reclaimer 10, be provided with gate 9.
The lower end of described belt dust-precipitator 14 is provided with gravity type lock wind discharge valve 2 15.
Described chute 7 is for to be greater than the impurity particle of 2mm, the groove shape structure that old sand particle is transported to ground by particle diameter.
The linear vibrating screen that described screening machine 6 is 2mm for sieve diameter.
As shown in Figure 1, a kind of used sodium silicate sand renovation technology, its technique is as follows:
1) remained on surface is had to Na
2the old sand raw material of O coating passes through fine crusher 4 Na for the first time
2o coating broken apart, controls the old sand particle that granularity is greater than 2mm and accounts for below 10%, is delivered in screening machine 6 after separation;
2) by 6 pairs of old sand particles of screening machine, sieve, impurity particle, old sand particle that particle diameter is greater than 2mm are transported to ground, and the old sand particle that particle diameter is less than 2mm enters in stripping machine 11;
3) in stripping machine 11, carry out the Na of old sand particle surface for the second time
2the fragmentation of O coating is peeled off, and guarantees the Na of old sand particle surface
2o coating is most of to be removed, and then enters in grader 12;
4), in grader 12, granularity is less than the Na being stripped from of 0.075mm
2o coating and particle are inhaled in belt dust-precipitator 14, and granularity is greater than 0.075mm and is less than the qualified particle of 2mm by gravity type lock wind discharge valve one 13 discharge grader 12 outsides of grader 12 bottoms.
1) in step, feeding conveyer belt 1 is delivered to old sand raw material in raw material cabin 2, then the belt feeder 3 connecting through raw material cabin 2 lower part outlets is delivered in fine crusher 4, is delivered to the interior screening of screening machine 6 again after in small, broken bits through bucket elevator 5.
2) in, impurity particle, old sand particle that particle diameter after screening machine 6 screenings is greater than 2mm are delivered to bottom surface by chute 7, the old sand particle that particle diameter is less than 2mm is introduced in intermediate bunker 8, then through the revolving plow reclaimer 10 being communicated with 8 times outlets of intermediate bunker, enters into stripping machine 11.
Implementation procedure of the present invention is as follows:
(1), used sodium silicate sand is run into the tup being rotated counterclockwise at a high speed after entering the body of fine crusher, by tup, met head on to impact, relatively large old sand is broken immediately, and broken sand flies at a high speed counterpunch board, collide for the second time fragmentation, the old sand after bounce-back and follow-up sudden old sand clash into fragmentation mutually.This shattering process has realized waterglass sand grains remained on surface Na
2the partial crushing for the first time of O coating is separated.
(2), the old sand after fragmentation enters screening machine by elevator and sieves after the discharge gate of fine crusher body below is discharged, the impurity such as the scum containing in old sand, iron block and granularity are greater than old sand sand lump chute along sieve nest discharge end in screening process of 2 millimeters and directly slip to ground, and screenings directly enters intermediate bunker.This screening process has been realized the old sand particle that enters intermediate bunker and has all been less than the granularity requirements of 2 millimeters.
(3), granularity is less than the used sodium silicate sand of 2 millimeters and deposits in after intermediate bunker, through being positioned at gate and the revolving plow reclaimer feeding stripping machine of warehouse below, the impeller of the stripping machine impeller of under the effect of centrifugal force, old sand grain being dished out at a high speed, and carry out between sand grains and sand grains, mutual shock and friction between sand grains and regenerating device housing abrasion-proof backing block carry out Na
2peeling off of O coating.This process has completed waterglass sand grains remained on surface Na
2o coating clash into for the second time, rub peel off.
(4), the mixing old sand after stripping machine generates directly enters grader via the conical outlet of body below, mix old sand and in grader inside, old sand is divided into two kinds of different particles of granule size, these two kinds of old sands are discharged by being positioned at the one-way lock wind discharge valve of body below.Na after peeling off
2the grains of sand that O coating and Relative Size are less been separated in the dust collecting sleeve of belt dust-precipitator, via the one-way lock wind discharge valve that is positioned at dust-precipitator below, discharge.
Claims (4)
1. a used sodium silicate sand refreshing appliance, comprise feed arrangement, it is characterized in that: this refreshing appliance also comprises fine crusher (4), screening machine (6), stripping machine (11), grader (12), belt dust-precipitator (14), described feed arrangement docks with fine crusher (4), this fine crusher (4) is communicated with screening machine (6) by bucket elevator (5), screening machine (6) is communicated with chute (7), screening machine (6) is communicated with stripping machine (11) again simultaneously, this stripping machine (11) is communicated with grader (12), grader (12) bottom is provided with gravity type lock wind discharge valve one (13), described grader (12) is communicated with belt dust-precipitator (14) again, described feed arrangement comprises feeding conveyer belt (1), raw material cabin (2), described feeding conveyer belt (1) docks with raw material cabin (2), described raw material cabin (2) lower part outlet connects belt feeder (3), and belt feeder (3) docks with fine crusher (4), between described screening machine (6) and stripping machine (11), be provided with the intermediate bunker (8) that stores old sand for temporary transient, the lower outlet of intermediate bunker (8) is communicated with revolving plow reclaimer (10), and revolving plow reclaimer (10) is communicated with stripping machine (11), between described intermediate bunker (8) and revolving plow reclaimer (10), be provided with gate (9), the lower end of described belt dust-precipitator (14) is provided with gravity type lock wind discharge valve two (15), described chute (7) is for to be greater than the impurity particle of 2mm, the groove shape structure that old sand particle is transported to ground by particle diameter, the linear vibrating screen that described screening machine (6) is 2mm for sieve diameter.
2. utilize equipment as claimed in claim 1 to carry out a technique for used sodium silicate sand renovation, it is characterized in that: its technique is as follows:
1) remained on surface is had to Na
2the old sand raw material of O coating passes through fine crusher (4) Na for the first time
2o coating broken apart, controls the old sand particle that granularity is greater than 2mm and accounts for below 10%, is delivered in screening machine (6) after separation;
2) by screening machine (6), old sand particle is sieved, impurity particle, old sand particle that particle diameter is greater than 2mm are transported to ground, and the old sand particle that particle diameter is less than 2mm enters in stripping machine (11);
3) in stripping machine (11), carry out the Na of old sand particle surface for the second time
2the fragmentation of O coating is peeled off, and guarantees the Na of old sand particle surface
2o coating is most of to be removed, and then enters in grader (12);
4), in grader (12), granularity is less than the Na being stripped from of 0.075mm
2o coating and particle are inhaled in belt dust-precipitator (14), and granularity is greater than 0.075mm and is less than the qualified particle of 2mm by gravity type lock wind discharge valve one (13) discharge grader (12) outside of grader (12) bottom.
3. used sodium silicate sand renovation technology according to claim 2, it is characterized in that: 1) in step, feeding conveyer belt (1) is delivered to old sand raw material in raw material cabin (2), the belt feeder (3) connecting through raw material cabin (2) lower part outlet is again delivered in fine crusher (4), passes through bucket elevator (5) after in small, broken bits to be delivered to screening in screening machine (6) again.
4. used sodium silicate sand renovation technology according to claim 2, it is characterized in that: 2) in, impurity particle, old sand particle that particle diameter after screening machine (6) screening is greater than 2mm are delivered to ground by chute (7), the old sand particle that particle diameter is less than 2mm is introduced in intermediate bunker (8), then passes through the revolving plow reclaimer (10) being communicated with the lower outlet of intermediate bunker (8) and enters into stripping machine (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210172750.8A CN102756073B (en) | 2012-05-30 | 2012-05-30 | Water glass old sand refurbishing equipment and process thereof for refurbishing old sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210172750.8A CN102756073B (en) | 2012-05-30 | 2012-05-30 | Water glass old sand refurbishing equipment and process thereof for refurbishing old sand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102756073A CN102756073A (en) | 2012-10-31 |
| CN102756073B true CN102756073B (en) | 2014-07-16 |
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|---|---|---|---|
| CN201210172750.8A Expired - Fee Related CN102756073B (en) | 2012-05-30 | 2012-05-30 | Water glass old sand refurbishing equipment and process thereof for refurbishing old sand |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921257B (en) * | 2016-04-20 | 2018-07-17 | 昌邑市龙港无机硅有限公司 | A kind of processing method for producing liquid sodium silicate and generating white residue |
| CN107052234A (en) * | 2016-12-30 | 2017-08-18 | 绵阳易简环保科技有限公司 | The multi-functional feeding device of cast used sand processing |
| CN111889619A (en) * | 2020-07-02 | 2020-11-06 | 闫晨 | Sodium silicate sand processingequipment |
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| CN2688383Y (en) * | 2004-01-18 | 2005-03-30 | 郑州波臣粉体工程技术有限公司 | Single-segment breaker |
| CN2721280Y (en) * | 2004-06-17 | 2005-08-31 | 赵齐 | Recovering apparatus for wast cast sand |
| CN2843660Y (en) * | 2005-08-09 | 2006-12-06 | 秦皇岛市宇田科技有限公司 | Hot investment casting molding sand recycling equipment |
| JP2007098433A (en) * | 2005-10-04 | 2007-04-19 | Sintokogio Ltd | Device for screening molding sand |
| CN201500549U (en) * | 2009-08-19 | 2010-06-09 | 长泰县海力机械制造有限公司 | Used sand production equipment provided with crusher |
| CN202752535U (en) * | 2012-05-30 | 2013-02-27 | 郑州新波臣工程技术有限公司 | Renovating device for used water glass sand |
-
2012
- 2012-05-30 CN CN201210172750.8A patent/CN102756073B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2688383Y (en) * | 2004-01-18 | 2005-03-30 | 郑州波臣粉体工程技术有限公司 | Single-segment breaker |
| CN2721280Y (en) * | 2004-06-17 | 2005-08-31 | 赵齐 | Recovering apparatus for wast cast sand |
| CN2843660Y (en) * | 2005-08-09 | 2006-12-06 | 秦皇岛市宇田科技有限公司 | Hot investment casting molding sand recycling equipment |
| JP2007098433A (en) * | 2005-10-04 | 2007-04-19 | Sintokogio Ltd | Device for screening molding sand |
| CN201500549U (en) * | 2009-08-19 | 2010-06-09 | 长泰县海力机械制造有限公司 | Used sand production equipment provided with crusher |
| CN202752535U (en) * | 2012-05-30 | 2013-02-27 | 郑州新波臣工程技术有限公司 | Renovating device for used water glass sand |
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| CN102756073A (en) | 2012-10-31 |
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