CN112916198A - Wet screening sand making system and method under strong wind condition - Google Patents
Wet screening sand making system and method under strong wind condition Download PDFInfo
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- CN112916198A CN112916198A CN202110128880.0A CN202110128880A CN112916198A CN 112916198 A CN112916198 A CN 112916198A CN 202110128880 A CN202110128880 A CN 202110128880A CN 112916198 A CN112916198 A CN 112916198A
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- separator
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- 239000004576 sand Substances 0.000 title claims abstract description 114
- 238000012216 screening Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims description 11
- 239000000843 powder Substances 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000004575 stone Substances 0.000 claims abstract description 41
- 239000010865 sewage Substances 0.000 claims abstract description 37
- 238000000746 purification Methods 0.000 claims abstract description 23
- 239000002002 slurry Substances 0.000 claims abstract description 22
- 239000000428 dust Substances 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 239000007921 spray Substances 0.000 claims abstract description 10
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 6
- 239000010802 sludge Substances 0.000 claims description 25
- 238000005507 spraying Methods 0.000 claims description 12
- 239000002390 adhesive tape Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 238000005352 clarification Methods 0.000 claims 3
- 238000007689 inspection Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000012716 precipitator Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
Abstract
The invention provides a wet screening sand making system under a strong wind condition, which comprises a sand and stone screen, a spiral classifier, a belt conveyor and a sand bin which are connected in sequence, wherein the sand and stone screen is provided with a high-pressure spray pipe, the outlet of the belt conveyor is provided with a dewatering screen, the water outlet of the spiral classifier is connected with a sand and powder quick separator, the bottom of the sand and powder quick separator is provided with a mortar pump, the outlet of the mortar pump is connected with a slurry purification device, the slurry purification device is connected with the sand bin, the water outlet of the slurry purification device is provided with a sewage collection tank, a sewage pump is arranged in the sewage collection tank, and the outlet of the sewage pump is connected with the sand and. By adopting the invention, dust is effectively inhibited, sand blown by wind is reduced, and the production-side inspection equipment is realized under the condition of strong wind, so that the failure rate is reduced, and the effective operation time of a production system is improved; prevents the sand from being stuck, ensures the sand yield, avoids the problem of low granularity modulus and improves the sand quality.
Description
Technical Field
The invention relates to the technical field of artificial sand making, in particular to a wet screening sand making system and method under the condition of strong wind.
Background
When sand and stone processing is carried out under the condition of strong wind, the produced sand is large, although a plurality of places are provided with the spraying dust suppression systems to control the sand, raised dust caused by a sand screening workshop is diffused all around along with the wind, so that the raised dust is still serious, serious environmental influence is caused, and certain potential safety hazard is brought to safe and civilized construction and road vehicle driving. Moreover, the sand blown by the wind during the production of the system is too large, and workers cannot normally patrol during the production, so that faults in the sand processing system occur frequently, the production and maintenance and equipment maintenance work are difficult to realize, the sand processing system can only carry out one-shift production and one-shift maintenance and daily maintenance in a running mode, the production efficiency is low, and the insufficient supply of aggregates is easily caused. In order to thoroughly solve the problem, related equipment such as a sand-making vertical shaft crushing workshop, a sand screening workshop, a belt conveyor and the like needs to be completely closed, but the engineering quantity is huge, and the construction feasibility is poor.
In the prior art, in order to solve the problem, a plurality of spraying facilities are added. Although the dust problem can be relieved, the sand material after spraying is easy to be stuck when being screened, the screening penetration rate is reduced, the aggregate diameter is poor, the granularity modulus is small, the stone powder content is high, and the quality of the gravel aggregate is influenced. Meanwhile, the spraying method can ensure that the water content of the sand is higher than 6% to achieve the effect, and the water content is lower than 2% which is required to be ensured by semi-dry screening, so that the problem cannot be solved, and the semi-dry sand making process cannot be adopted.
Disclosure of Invention
In order to solve the technical problems, the invention provides a wet screening sand making system and a wet screening sand making method under the condition of strong wind.
The invention is realized by the following technical scheme.
The invention provides a wet screening sand making system under a strong wind condition, which comprises a sand and stone screen, a spiral classifier, a belt conveyor and a sand silo which are sequentially connected, wherein a high-pressure spray pipe is arranged on the sand and stone screen, a dewatering screen is arranged at the outlet of the belt conveyor, a water outlet of the spiral classifier is connected with a sand-powder quick separator, a mortar pump is arranged at the bottom of the sand-powder quick separator, the outlet of the mortar pump is connected with a slurry purification device, the slurry purification device is connected with the sand silo, a sewage collection tank is arranged at the water outlet of the slurry purification device, a sewage pump is arranged in the sewage collection tank, and the outlet of the sewage pump is connected with the sand-powder quick.
The overflow port of the sand-powder quick separator is adjustable in height.
The overflow port of the sand-powder rapid separator is also connected with a settling tank, and the water outlet of the settling tank is connected with a clear water tank.
The bottom of the settling tank is connected with a sludge tank, a sludge pump is arranged in the sludge tank, and the outlet of the sludge pump is connected with a stone powder dryer.
The adhesive tape machine is a B31-B650 adhesive tape machine.
The sand powder quick separator is an inclined plate precipitator.
The mud purification equipment is black cyclone treatment equipment.
The invention also provides a wet screening sand making method under the strong wind condition, which comprises the following steps:
step one, during sand screening, spraying water to the sand screen by a high-pressure spray pipe, and controlling the pressure and the water quantity of the sprayed water according to the treatment capacity, wherein the dust quantity is lower than the local index requirement and no screen pasting is generated;
step two, the water-sand mixture after sieving enters a spiral classifier, sandstone aggregate is separated from stone powder in the spiral classifier, and the sandstone is conveyed to the tail end of an adhesive tape machine through the adhesive tape machine, is dehydrated through a dewatering screen until the water content is lower than a standard value, and then flows into a sand silo;
and step three, sewage at the water outlet of the spiral classifier enters a sand powder quick separator, fine sand at the bottom is pumped out to a slurry purification device by a slurry pump after sedimentation, the fine sand is mixed with sand aggregate in a sand silo after being dehydrated by the slurry purification device, the granularity modulus is adjusted, and the sewage generated by the slurry purification device is conveyed back to the sand slurry quick separator for returning the fine sand again.
And step three, after the sewage enters the sand-powder quick separator, the settling time is determined according to the separation effect of the sand-powder quick separator, and the settlement of the stone powder with the particle size of less than 0.5mm is less than 10 percent, and the settlement of the stone powder with the particle size of more than 0.5mm is more than 80 percent.
Also comprises the following steps:
sewage overflowed from the sand-powder quick separator is discharged into a settling tank, sludge at the bottom is discharged into a sludge tank after settling in the settling tank, the sludge is pumped out by a sludge pump to a stone powder dryer for drying and storage, and clear water at the upper part of the settling tank is discharged into a clear water tank for spraying a sand-stone sieve.
The invention has the beneficial effects that:
by adopting the invention, dust is effectively inhibited, sand blown by wind is reduced, and the production-side inspection equipment is realized under the condition of strong wind, so that the failure rate is reduced, and the effective operation time of a production system is improved; the sand-gravel separator has the advantages that the screen is prevented from being stuck, the sand-gravel yield is guaranteed, the problem of low particle size modulus is avoided, fine sand is recycled through the sand-powder quick separator, the particle size of a product is adjusted, and the sand-gravel quality is improved. Sewage produced by the mud purification equipment enters the sand-powder quick separator again, so that sewage is conveniently treated in a centralized manner, and the fine sand recovery efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1-sand and stone screening; 2-spiral classifier; 3-a tape machine; 4-dewatering screen; 5-a sand silo; 6-high pressure spray pipe; 7-sand powder quick separator; 8-slurry pump; 9-a mud purification device; 10-a sewage collecting tank; 11-a sewage pump; 12-a settling tank; 13-clear water tank; 14-a sludge tank; 15-stone powder dryer.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
The invention provides a wet screening sand making system under a strong wind condition, which comprises a sand and stone screen 1, a spiral classifier 2, a rubber belt machine 3 and a sand silo 5 which are connected in sequence, wherein a high-pressure spray pipe 6 is arranged on the sand and stone screen 1, a dewatering screen 4 is arranged at the outlet of the rubber belt machine 3, a sand and powder quick separator 7 is connected to the water outlet of the spiral classifier 2, a sand and powder pump 8 is arranged at the bottom of the sand and powder quick separator 7, a mud purification device 9 is connected to the outlet of the sand pump 8, the mud purification device 9 is connected with the sand silo 5, a sewage collecting tank 10 is arranged at the water outlet of the mud purification device 9, a sewage pump 11 is arranged in the sewage collecting tank 10, and the outlet of the sewage pump 11 is connected with the sand.
When the sand and stone screen 1 is used, the high-pressure water spraying pipe sprays water to the sand and stone screen 1 to absorb stone powder, and meanwhile, screen pasting is effectively prevented under the action of impact force, so that the screening rate is ensured; the water-sand mixture after sieving enters a spiral classifier 2, the sandstone aggregate is separated from the stone powder under the action of the spiral classifier 2, the sandstone is conveyed to a sand silo 5 through a belt conveyor 3, and the problem that the water content exceeds the standard is solved through a dewatering screen 4. The water outlet of the spiral classifier 2 is sewage containing stone powder and fine sand, and after the sewage enters the sand powder rapid separator 7, the characteristic that the settling time of the stone powder below 0.5mm is longer than that of the fine sand is utilized to recover the fine sand above 0.5mm, and the fine sand is doped into the sandstone aggregate, so that the sandstone fineness modulus is adjusted, and the problem that the fineness modulus is larger due to the loss of the fine sand is avoided.
By adopting the invention, dust is effectively inhibited, sand blown by wind is reduced, and the production-side inspection equipment is realized under the condition of strong wind, so that the failure rate is reduced, and the effective operation time of a production system is improved; the sand-gravel separator has the advantages that the screen pasting is prevented, the sand-gravel yield is guaranteed, the problem of low particle size modulus is avoided, and fine sand is recycled through the sand-powder quick separator 7, so that the particle size of a product is adjusted, and the sand-gravel quality is improved. The sewage generated by the mud purifying equipment 9 enters the sand-powder quick separator 7 again, so that the sewage is conveniently and intensively treated, and the fine sand recovery efficiency is improved.
The height of an overflow port of the sand-powder quick separator 7 can be adjusted. The sedimentation time is changed by adjusting the height of the overflow port, so that the content of the stone powder is adjusted, and the product quality is effectively controlled.
The overflow port of the sand-powder rapid separator 7 is also connected with a settling tank 12, and the water outlet of the settling tank 12 is connected with a clear water tank 13. Is convenient for recycling water, the water in the clean water tank 13 can be used for spraying the sand-stone sieve 1, the utilization rate of water resources is improved, and the workload of sewage treatment is reduced.
The bottom of the settling tank is connected with a sludge tank 14, a sludge pump is arranged in the sludge tank 14, and the outlet of the sludge pump is connected with a stone powder dryer 15. The stone powder is settled in the settling tank 12 and flows into a sludge tank 14, and is conveyed into a stone powder dryer 15 through a sludge pump. The operation period of the settling tank 12 is prolonged, the workload of sewage treatment is reduced, and the sewage treatment space is reduced; in addition, the stone powder is convenient to recycle, and resources are saved.
The belt conveyor 3 is a B31-B650 belt conveyor.
The sand powder rapid separator 7 is an inclined plate precipitator.
The mud purification equipment 9 is black cyclone treatment equipment.
The invention also provides a wet screening sand making method under the strong wind condition, which comprises the following steps:
step one, when the sand sieve 1 is used, the high-pressure spray pipe 6 sprays water to the sand sieve 1, the pressure and the water quantity of the water spraying are controlled according to the treatment capacity, and the dust quantity is lower than the local index requirement and no screen pasting is generated;
step two, the water-sand mixture after sieving enters a spiral classifier 2, sandstone aggregate is separated from stone powder in the spiral classifier 2, sandstone is conveyed to the tail end of an adhesive tape machine 3 through the adhesive tape machine 3, and then is dehydrated through a dehydration sieve 4 until the water content is lower than a standard value, and then flows into a sand silo 5;
and step three, sewage at the water outlet of the spiral classifier 2 enters a sand powder quick separator 7, fine sand at the bottom is pumped out to a slurry purification device 9 by a slurry pump after sedimentation, the fine sand is mixed with sandstone aggregate in a sand silo 5 after being dehydrated by the slurry purification device 9, the granularity modulus is adjusted, and the sewage generated by the slurry purification device 9 is conveyed back to the sand slurry quick separator for returning the fine sand again.
And step three, after the sewage enters the sand powder rapid separator 7, the settling time is determined according to the separation effect of the sand powder rapid separator 7, and the settlement of the stone powder with the particle size of less than 0.5mm is less than 10 percent, and the settlement of the stone powder with the particle size of more than 0.5mm is more than 80 percent.
Also comprises the following steps:
sewage overflowed from the sand-powder quick separator 7 is discharged into a settling tank 12, after settling in the settling tank 12, sludge at the bottom is discharged into a sludge tank 14, then is pumped out by a sludge pump to a stone powder dryer 15 for drying and storage, and clear water at the upper part of the settling tank 12 is discharged into a clear water tank 13 for spraying the sand-stone screen 1.
Claims (9)
1. The utility model provides a wet screening system sand system under strong wind condition which characterized in that: including grit sieve (1), spiral classifier (2), sealing-tape machine (3), sand silo (5) that connect gradually, be equipped with high-pressure shower (6) on grit sieve (1), the exit of sealing-tape machine (3) is equipped with dewatering screen (4), the delivery port of spiral classifier (2) is connected with sand powder flash separator (7), the bottom of sand powder flash separator (7) is equipped with mortar pump (8), the exit linkage of mortar pump (8) has mud clarification plant (9), mud clarification plant (9) are connected with sand silo (5), the delivery port of mud clarification plant (9) is equipped with album dirty groove (10), be equipped with sewage pump (11) in album dirty groove (10), the export and the sand powder flash separator (7) of sewage pump (11) are connected.
2. The wet screening sand making system under high wind conditions of claim 1, wherein: the height of an overflow port of the sand-powder quick separator (7) can be adjusted.
3. The wet screening sand making system under high wind conditions of claim 1, wherein: an overflow port of the sand-powder rapid separator (7) is also connected with a settling tank (12), and a water outlet of the settling tank (12) is connected with a clear water tank (13).
4. The wet screening sand making system under high wind conditions of claim 3, wherein: the bottom of the settling tank is connected with a sludge tank (14), a sludge pump is arranged in the sludge tank (14), and the outlet of the sludge pump is connected with a stone powder dryer (15).
5. The wet screening sand making system under high wind conditions of claim 1, wherein: the adhesive tape machine (3) is a B31-B650 adhesive tape machine.
6. The wet screening sand making system under high wind conditions of claim 1, wherein: the mud purification equipment (9) is black cyclone treatment equipment.
7. A wet screening sand making method under the condition of strong wind is characterized in that: comprises the following steps of (a) carrying out,
step one, when the sand and stone screen (1) is used, the high-pressure spray pipe (6) sprays water to the sand and stone screen (1), the pressure and the water quantity of the water spraying are controlled according to the treatment capacity, and the dust quantity is lower than the local index requirement and the screen pasting is not generated;
step two, the water-sand mixture after sieving enters a spiral classifier (2), sandstone aggregate is separated from stone powder in the spiral classifier (2), sandstone is conveyed to the tail end of an adhesive tape machine (3) through the adhesive tape machine (3), and then is dehydrated through a dehydration sieve (4) until the water content is lower than a standard value, and then flows into a sand silo (5);
and step three, sewage at the water outlet of the spiral classifier (2) enters a sand powder quick separator (7), fine sand at the bottom is pumped out to a slurry purification device (9) by a slurry pump after sedimentation, the fine sand is mixed with sandstone aggregate in a sand bin (5) after being dehydrated by the slurry purification device (9), the granularity modulus is adjusted, and the sewage generated by the slurry purification device (9) is conveyed back to the sand slurry quick separator for returning the fine sand again.
8. The method for manufacturing sand by wet screening under the condition of strong wind as claimed in claim 7, wherein:
and step three, after the sewage enters the sand-powder quick separator (7), the settling time is determined according to the separation effect of the sand-powder quick separator (7), and the settlement of the stone powder with the particle size of less than 0.5mm is less than 10 percent, and the settlement of the stone powder with the particle size of more than 0.5mm is more than 80 percent.
9. The method for manufacturing sand by wet screening under the condition of strong wind as claimed in claim 7, wherein: the method also comprises the following steps of,
sewage overflowed by the sand-powder quick separator (7) is discharged into a settling tank (12), after settling in the settling tank (12), sludge at the bottom is discharged into a sludge tank (14), then is pumped out by a sludge pump to a stone powder dryer (15) for drying and storage, and clear water at the upper part of the settling tank (12) is discharged into a clear water tank (13) for spraying the sand-stone sieve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110128880.0A CN112916198A (en) | 2021-01-29 | 2021-01-29 | Wet screening sand making system and method under strong wind condition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110128880.0A CN112916198A (en) | 2021-01-29 | 2021-01-29 | Wet screening sand making system and method under strong wind condition |
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| CN112916198A true CN112916198A (en) | 2021-06-08 |
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| CN202110128880.0A Pending CN112916198A (en) | 2021-01-29 | 2021-01-29 | Wet screening sand making system and method under strong wind condition |
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|---|---|---|---|---|
| CN1392002A (en) * | 2002-07-23 | 2003-01-22 | 赵玉石 | Moutain flour sand washing process equipment |
| RU2008144466A (en) * | 2008-11-10 | 2010-05-20 | Леонид Петрович Любченко (RU) | TECHNOLOGICAL COMPLEX OF TREATMENT OF FORMING SANDS BY THE HYDRAULIC WASHING METHOD WITH THE FOLLOWING CLASSIFICATION AND METHOD OF ENRICHMENT OF FORMING SANDS ON THE BOUNDARY VALUE OF SHEARED DRIED SHEAR |
| CN104368434A (en) * | 2014-05-15 | 2015-02-25 | 义乌市鑫隆机械实业有限公司 | Sand washing machine with fine sand recovering and rewashing function and obtaining method thereof |
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2021
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Application publication date: 20210608 |