CN104815951B - A kind of casting reclaimed sand wind magnetic selection method and equipment - Google Patents
A kind of casting reclaimed sand wind magnetic selection method and equipment Download PDFInfo
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- CN104815951B CN104815951B CN201510198006.9A CN201510198006A CN104815951B CN 104815951 B CN104815951 B CN 104815951B CN 201510198006 A CN201510198006 A CN 201510198006A CN 104815951 B CN104815951 B CN 104815951B
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Abstract
The present invention relates to a kind of casting reclaimed sand wind magnetic selection method, legacy sand containing sand grains, dust and ferrochrome granule in cylinder respectively through magnetic separation, selecting crude drugs with winnower and screening, magnetic separation process isolates ferrochrome granule, and winnowing process isolates dust, and screening process isolates the sand grains that particle diameter requires less than regulation.Dry type magnetic separation cylinder is fixed in the middle part of cylinder, and can rotate around rotary shaft, is provided with Zigzag type deflector in the cylinder on dry type magnetic separation cylinder top；The direction that throws away along dry type magnetic separation cylinder is provided with at least twice screen cloth, the cylinder that upper screen one lower end is corresponding sets blast orifice and connects aerator, set compressed air blowing cleaner in the cylinder below lower screen two, and cylinder body bottom sets sand removing hole；Set ash discharge storehouse below screen cloth two, be ash discharging hole bottom ash discharge storehouse.The present invention can optimize the granularmetric composition of reclaimed sand in magnetic separation simultaneously, and it can reduce alkali phenolic resin and firming agent liquid material usage amount when reusing, and improves the quality of casting sand type.
Description
Technical field
The present invention relates to the generating apparatus again of a kind of foundry sand, particularly relate to a kind of casting reclaimed sand wind magnetic selection method and equipment.
Background technology
Casting industry is the basic activity in manufacturing industry, China's castings production per ton waste sand to be discharged about 1 ton, year discharge casting
Making waste sand more than 3,000 ten thousand tons, resource consumption and environmental pollution are the most surprising.And cast waste sand in a large number in enterprise's discharge
While, enterprise need to supplement the fresh sand of equivalent to maintain production line to run to production line, and the fresh sand that the annual whole nation thereby results in is adopted
Purchase cost and cost of transportation reaches 10,000,000,000 yuan, bring huge financial burden to enterprise, bring huge also to the resource of China and environment
Big pressure.Therefore, the casting process of waste sand and recycling have become problem the most in the urgent need to address.
Foundry sand has the strictest restriction surmising on composition, the thinnest sand of granularity is unfavorable for that the circulation of reclaimed sand makes
With, and reuse because moulding needs the ferrochrome granule added to enter in reclaimed sand in casting process.At present
Conventional reclaimed sand selects sand equipment as it is shown in figure 1, it is to utilize dry type low intensity magnetic separation cylinder by own magnetic force separation ferrochrome granule, profit
With cleaner unit, dust (the 270 above microgranule of mesh) is sucked in ash silo.The sand grains primary particle size that casting is used should be greater than 30
Mesh, and this sand grains selecting sand equipment cannot isolate less than 30 mesh particle diameters and cannot siphoning away with cleaner unit, make regeneration
Sand medium-fine sand is on the high side, dustiness is big, it is impossible to meet the casting requirement to fineness of sand, mo ld void and sand-mould quality.
Summary of the invention
The invention provides a kind of casting reclaimed sand wind magnetic selection method and equipment, use magnetic separation in an equipment, selecting crude drugs with winnower and sieve
The mode that phase selection combines, reaches to separate ferrochrome granule, dust and the purpose of fine sand from casting reclaimed sand, optimizes reclaimed sand
Granularmetric composition, it can reduce alkali phenolic resin and firming agent liquid material usage amount, improve the matter of casting sand type when reusing
Amount.
In order to achieve the above object, the present invention realizes by the following technical solutions:
A kind of casting reclaimed sand wind magnetic selection method, the legacy sand containing sand grains, dust and ferrochrome granule in cylinder respectively through
Magnetic separation, selecting crude drugs with winnower and screening, magnetic separation process isolates ferrochrome granule, and winnowing process isolates dust, and screening process isolates grain
The sand grains that footpath requires less than regulation.
Specifically include following steps:
1) the legacy sand containing sand grains, dust and ferrochrome granule is entered in cylinder by top, through Zigzag type deflector water conservancy diversion
After fall on dry type magnetic separation cylinder；
2) ferrochrome granular absorption is separated by dry type magnetic separation cylinder, and is thrown to be obliquely installed by the hybrid particles of other sand grains and dust
Screen cloth one on, through screen cloth one filter after fine sand blown off on the screen cloth two being obliquely installed by aerator, through screen cloth two again
More fine sand after secondary filtration is discharged in ash bag outside ash discharging hole；
3) upwards purging from the compressed air of hybrid particles of screen cloth one top landing, dust therein moves upward and by cylinder
The dust removal port on body top enters cleaning shaft；
4) sand grains after dedusting is regenerated foundry sand, cylinder bottom sand removing hole enter in finished bin.
The mesh number of described screen cloth one is 20～40 mesh, and the mesh number of screen cloth two is 60～80 mesh.
For realizing a kind of equipment casting reclaimed sand wind magnetic selection method, including cylinder, dry type magnetic separation cylinder, aerator and compression
Air purge set, described dry type magnetic separation cylinder is fixed in the middle part of cylinder, and can rotate around rotary shaft, dry type magnetic separation cylinder top
Zigzag type deflector it is provided with in cylinder；The direction that throws away along dry type magnetic separation cylinder is provided with at least twice screen cloth, upper screen one lower end
Set blast orifice on corresponding cylinder and connect aerator, in the cylinder below lower screen two, set compressed air blowing cleaner, cylinder
Bottom sets sand removing hole；Set ash discharge storehouse below screen cloth two, be ash discharging hole bottom ash discharge storehouse.
Described cylinder top and top, ash discharge storehouse are equipped with dust removal port and connect outside cleaning shaft.
Described compressed air blowing cleaner is made up of the number row's scavenging conduit stretched in cylinder, and scavenging conduit is provided with blowing of dense arrangement
Pore, the external air compressor of compressed air blowing cleaner.
Compared with prior art, the invention has the beneficial effects as follows:
The mode using magnetic separation in an equipment, selecting crude drugs with winnower and screening to combine, reaches to separate ferrochrome from casting reclaimed sand
Grain, dust and the purpose of fine sand, optimize the granularmetric composition of reclaimed sand, its can reduce when reusing alkali phenolic resin and
Firming agent liquid material usage amount, improves the quality of casting sand type.
Accompanying drawing explanation
Fig. 1 is the existing structural representation selecting sand equipment of the present invention.
Fig. 2 is the structural representation of wind magnetic plant of the present invention.
Fig. 3 is the A-A sectional view in Fig. 2.
In figure: 1. charging aperture 2. dust removal port 3. cylinder 4. Zigzag type deflector 5. dry type magnetic separation cylinder 6. magnetic separation barrel drives
Dynamic ash discharge storehouse, device 7. screen cloth 1 screen cloth 2 9. ash discharge storehouse 10. dust removal port 11. ash discharging hole 12. aerator
13. compressed air blowing cleaner 131. scavenging conduit 132. gas hole 14. sand removing holes
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described further:
A kind of casting reclaimed sand wind magnetic selection method of the present invention, the legacy sand containing sand grains, dust and ferrochrome granule is at cylinder
Respectively through magnetic separation, selecting crude drugs with winnower and screening in 3, magnetic separation process isolates ferrochrome granule, and winnowing process isolates dust, screening
Process isolates the sand grains that particle diameter requires less than regulation.
Specifically include following steps:
1) the legacy sand containing sand grains, dust and ferrochrome granule is entered in cylinder 3 by top, through Zigzag type deflector 4
Fall after water conservancy diversion on dry type magnetic separation cylinder 5；
2) ferrochrome granular absorption is separated by dry type magnetic separation cylinder 5, and the hybrid particles of other sand grains and dust is thrown to inclination sets
On the screen cloth 1 put, the fine sand after screen cloth 1 filters is blown off on the screen cloth 28 being obliquely installed by aerator 12,
More fine sand after screen cloth 28 filters again is discharged in ash bag outside ash discharging hole 11；
3) upwards purge from the compressed air of hybrid particles of screen cloth 1 top landing, dust therein move upward and by
The dust removal port 2 on cylinder 3 top enters cleaning shaft；
4) sand grains after dedusting is regenerated foundry sand, cylinder 3 bottom sand removing hole 14 enter in finished bin.
The mesh number of described screen cloth 1 is 20～40 mesh, and the mesh number of screen cloth 28 is 60～80 mesh.
See Fig. 2-Fig. 3, be the structural representation of the present invention, for realizing a kind of equipment casting reclaimed sand wind magnetic selection method,
Including cylinder 3, dry type magnetic separation cylinder 5, aerator 12 and compressed air blowing cleaner 13, described dry type magnetic separation cylinder 5 is fixed
In the middle part of cylinder 3, and can rotate around rotary shaft, in the cylinder 3 on dry type magnetic separation cylinder 3 top, be provided with Zigzag type deflector 4；
The direction that throws away along dry type magnetic separation cylinder 5 is provided with at least twice screen cloth, and the cylinder 3 that upper screen 1 lower end is corresponding sets air blast
Mouth connection aerator 12, sets compressed air blowing cleaner 13, sets bottom cylinder 3 in the cylinder 3 below lower screen 28
Sand removing hole 14；Set ash discharge storehouse 9 below screen cloth 28, be ash discharging hole 11 bottom ash discharge storehouse 9.
Described cylinder 3 top and top, ash discharge storehouse 9 are equipped with dust removal port 2/10 and connect outside cleaning shaft.
Described compressed air blowing cleaner 13 is made up of the number row's scavenging conduit 131 stretched in cylinder 3, and scavenging conduit 131 sets
There are the gas hole 132 of dense arrangement, the external air compressor of compressed air blowing cleaner 13.
Following example are implemented under premised on technical solution of the present invention, give detailed embodiment and concrete
Operating process, but protection scope of the present invention is not limited to following embodiment.In following embodiment, method therefor is as without saying especially
Bright it is conventional method.
[embodiment]
In the present embodiment, cylinder 3 is divided into upper and lower two parts, and dry type magnetic separation cylinder 5 is fixed on top cylinder and divides with lower cylinder
At boundary, off-axis side is arranged, and dry type magnetic separation cylinder 5 is done clockwise turn by chain-driving around trunnion axis by driving means 6
Dynamic, along the lower cylinder 3 in its direction of dishing out, it is provided with twice screen cloth 7,8, twice screen cloth 7,8 is all obliquely installed, its
Plane is perpendicular to the tangent to periphery direction of dry type magnetic separation cylinder 5.The most superposed screen cloth 1 is 30 eye mesh screens, with sieve
The lower screen 28 that net 1 be arranged in parallel is 70 eye mesh screens.
The lower end of screen cloth 1 is unsettled, concordant place, its lower end the and just lower cylinder 3 of screen cloth 1 is being provided with blast orifice, logical
Cross airduct and connect aerator 12.Screen cloth 28 connects with the interruption-forming closing that enters in the ash discharge storehouse 9 being arranged on lower cylinder 3 side
Connecing, be provided with ash discharging hole 11 bottom ash discharge storehouse 9, top is provided with dust removal port 10 and is connected with cleaner unit by pipeline.Top cylinder
The dust removal port 2 that also is provided with of 3 is connected with cleaner unit.Through screen cloth 28 filter fine sand and dust granule through ash discharging hole 11
Siphoned away by external particulate dirt collection device, and be displaced in ash bag.
In the present embodiment, compressed air blowing cleaner 13 is made up of three groups of scavenging conduits 131 side by side, stretches in cylinder 3
Offering intensive gas hole 132 on scavenging conduit 131, scavenging conduit 131 other end connects air compressor by airduct.
In the present embodiment, the purging pressure of cfentrifugal blower 12 is about 0.15Mpa, can will fall on screen cloth 1
Hybrid particles be purged at screen cloth 28 filter.Compressed-air actuated pressure is about 0.5Mpa, can will fall from screen cloth 28
Under old sand in the dust that contains and fine sand grain upwards blow, and make it discharge outside cylinder 3 eventually through dust removal port 2.Grain
Sand grains more than footpath 30 mesh will not be blown by wind, directly drops to bottom cylinder 3, and is discharged in finished bin by sand removing hole 14
As reclaimed sand finished product.
In the present embodiment, in the reclaimed sand finished product after wind magnetic separator equipment magnetic separation, selecting crude drugs with winnower, screening, particle diameter is at 30 mesh
Above sand grains accounts for more than the 97% of granularmetric composition, complies fully with Foundry Production requirement.
Claims (4)
1. a casting reclaimed sand wind magnetic selection method, it is characterised in that containing the legacy sand of sand grains, dust and ferrochrome granule
Respectively through magnetic separation, selecting crude drugs with winnower and screening in cylinder, magnetic separation process isolates ferrochrome granule, and winnowing process isolates dust,
Screening process isolates the sand grains that particle diameter requires less than regulation；Specifically include following steps:
1) the legacy sand containing sand grains, dust and ferrochrome granule is entered in cylinder by top, through Zigzag type deflector water conservancy diversion
After fall on dry type magnetic separation cylinder；
2) ferrochrome granular absorption is separated by dry type magnetic separation cylinder, and is thrown to be obliquely installed by the hybrid particles of other sand grains and dust
Screen cloth one on, through screen cloth one filter after fine sand blown off on the screen cloth two being obliquely installed by aerator, through screen cloth two again
More fine sand after secondary filtration is discharged in ash bag outside ash discharging hole；
3) upwards purging from the compressed air of hybrid particles of screen cloth one top landing, dust therein moves upward and by cylinder
The dust removal port on body top enters cleaning shaft；
4) sand grains after dedusting is regenerated foundry sand, cylinder bottom sand removing hole enter in finished bin；
The mesh number of described screen cloth one is 20～40 mesh, and the mesh number of screen cloth two is 60～80 mesh.
2. for realizing a kind of equipment casting reclaimed sand wind magnetic selection method described in claim 1, it is characterised in that bag
Including cylinder, dry type magnetic separation cylinder, aerator and compressed air blowing cleaner, described dry type magnetic separation cylinder is fixed in the middle part of cylinder, and
Can rotate around rotary shaft, in the cylinder on dry type magnetic separation cylinder top, be provided with Zigzag type deflector；Direction is thrown away along dry type magnetic separation cylinder
It is provided with at least twice screen cloth, the cylinder that upper screen one lower end is corresponding sets blast orifice and connects aerator, below lower screen two
Cylinder in set compressed air blowing cleaner, cylinder body bottom sets sand removing hole；Set ash discharge storehouse below screen cloth two, bottom ash discharge storehouse be
Ash discharging hole.
A kind of casting reclaimed sand wind magnetic plant the most according to claim 2, it is characterised in that described cylinder top
And top, ash discharge storehouse is equipped with dust removal port and connects outside cleaning shaft.
A kind of casting reclaimed sand wind magnetic plant the most according to claim 2, it is characterised in that described compressed air
Blow device is made up of the number row's scavenging conduit stretched in cylinder, and scavenging conduit is provided with the gas hole of dense arrangement, and compressed air is blown
The external air compressor of sweeping device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198006.9A CN104815951B (en) | 2015-04-23 | 2015-04-23 | A kind of casting reclaimed sand wind magnetic selection method and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198006.9A CN104815951B (en) | 2015-04-23 | 2015-04-23 | A kind of casting reclaimed sand wind magnetic selection method and equipment |
Publications (2)
| Publication Number | Publication Date |
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| CN104815951A CN104815951A (en) | 2015-08-05 |
| CN104815951B true CN104815951B (en) | 2017-01-04 |
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| CN201510198006.9A Active CN104815951B (en) | 2015-04-23 | 2015-04-23 | A kind of casting reclaimed sand wind magnetic selection method and equipment |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170897A (en) * | 2015-09-08 | 2015-12-23 | 宁国市南方耐磨材料有限公司 | Sand mold recovery device |
| CN107755083A (en) * | 2017-10-16 | 2018-03-06 | 镇江远大传动机械有限公司 | One kind removes iron construction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201168766Y (en) * | 2008-01-16 | 2008-12-24 | 潍坊华星铸造机械有限公司 | Clay sand regeneration complete equipment |
| CN101773981A (en) * | 2010-03-05 | 2010-07-14 | 昆明理工大学 | Method for mechanically combining and regenerating casting clay-resin mixed used sand |
| CN202162331U (en) * | 2011-07-27 | 2012-03-14 | 安徽省宁国新宁实业有限公司 | Old cast sand recovery and processing equipment |
| CN102886493A (en) * | 2012-10-11 | 2013-01-23 | 沈阳创达技术交易市场有限公司 | Foundry sand separator |
| CN103521699A (en) * | 2013-10-21 | 2014-01-22 | 青岛和德隆机械有限公司 | Regeneration system of used clay sand |
| CN204700237U (en) * | 2015-04-23 | 2015-10-14 | 辽宁福鞍重工股份有限公司 | A kind of casting reclaimed sand wind magnetic plant |
-
2015
- 2015-04-23 CN CN201510198006.9A patent/CN104815951B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201168766Y (en) * | 2008-01-16 | 2008-12-24 | 潍坊华星铸造机械有限公司 | Clay sand regeneration complete equipment |
| CN101773981A (en) * | 2010-03-05 | 2010-07-14 | 昆明理工大学 | Method for mechanically combining and regenerating casting clay-resin mixed used sand |
| CN202162331U (en) * | 2011-07-27 | 2012-03-14 | 安徽省宁国新宁实业有限公司 | Old cast sand recovery and processing equipment |
| CN102886493A (en) * | 2012-10-11 | 2013-01-23 | 沈阳创达技术交易市场有限公司 | Foundry sand separator |
| CN103521699A (en) * | 2013-10-21 | 2014-01-22 | 青岛和德隆机械有限公司 | Regeneration system of used clay sand |
| CN204700237U (en) * | 2015-04-23 | 2015-10-14 | 辽宁福鞍重工股份有限公司 | A kind of casting reclaimed sand wind magnetic plant |
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