CN113020539B - Multistage air-cooled molding sand cooling equipment and molding sand cooling method thereof - Google Patents
Multistage air-cooled molding sand cooling equipment and molding sand cooling method thereof Download PDFInfo
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- CN113020539B CN113020539B CN202110227215.7A CN202110227215A CN113020539B CN 113020539 B CN113020539 B CN 113020539B CN 202110227215 A CN202110227215 A CN 202110227215A CN 113020539 B CN113020539 B CN 113020539B
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- 238000001816 cooling Methods 0.000 title claims abstract description 130
- 239000003110 molding sand Substances 0.000 title claims abstract description 76
- 239000004576 sand Substances 0.000 claims abstract description 143
- 238000007664 blowing Methods 0.000 claims abstract description 28
- 239000000428 dust Substances 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000005507 spraying Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000005266 casting Methods 0.000 abstract description 9
- 230000002950 deficient Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000004927 clay Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007528 sand casting Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a multi-stage air-cooled molding sand cooling device and a molding sand cooling method thereof, wherein the multi-stage cooling device, an air draft dust removing device and a spraying device are arranged in the cooling sand warehouse, the multi-stage cooling device comprises a plurality of cooling mechanisms, the cooling mechanisms are fixed on two sides of the cooling sand warehouse from top to bottom and are arranged in a crossed manner, the cooling mechanisms comprise a sand blower, a blowing pipe, a blower and a driving motor, the driving motor and the blower are fixed on the outer side of the cooling sand warehouse through mounting plates, the driving motor is connected with the sand blower through a conveying belt, the sand blower is arranged in the cooling sand warehouse, the blower is connected with the blowing pipe, and the air outlet end of the blowing pipe is arranged in the cooling sand warehouse. The multistage air-cooled molding sand cooling equipment and the molding sand cooling method thereof adopting the structure are suitable for production environments with larger production capacity, large molding sand circulation quantity and higher circulation frequency, greatly improve the molding sand cooling efficiency and reduce the waste and defective rate of castings.
Description
Technical Field
The invention relates to the technical field of material sand casting molding, in particular to multi-stage air-cooled molding sand cooling equipment and a molding sand cooling method thereof.
Background
The material sand casting molding industry has the advantages that the temperature of the cast molding sand is higher, the casting molding sand cannot be directly recycled for reshaping, the performance of the molding sand is seriously influenced after the temperature of the hot sand exceeds 40 ℃, and even the molding is impossible, so that the temperature of the cast hot sand needs to be reduced to enable the casting sand to meet the use requirement, the conventional casting industry molding sand cooling method and equipment comprise the following steps, firstly, a vibration boiling cooling bed is adopted, and due to the small internal space and limited cooling quantity of the equipment, the prior art of resin sand molding technology is more and the process of clay sand molding is less. And secondly, the double-disc cooler is suitable for clay sand molding technology, but the cooling capacity is limited. Thirdly, the drum-type molding sand cooler sprays water to the outer wall of the drum, and the cooling effect can not meet the requirement when the sand consumption is large because the molding sand can not be fully dispersed in the drum. Fourthly, the U-shaped tubular sand temperature regulator has the defects of lower efficiency and insufficient cooling strength when the sand temperature is too high. Fifthly, the molding sand is scattered and naturally cooled or cooled by blowing, and the molding sand has the defects of low production efficiency, large production space occupation and environmental pollution.
When the yield is large, the circulation amount of molding sand is large, the circulation frequency is high, and the molding sand temperature is high, especially in summer high-temperature seasons, the temperature of the hot type sand is difficult to be reduced to a proper range, and the casting waste and defective rate is high.
Disclosure of Invention
The invention aims to provide a multi-stage air-cooled molding sand cooling device and a molding sand cooling method thereof, which are suitable for production environments with larger production capacity, large molding sand circulation amount and higher circulation frequency, greatly improve the molding sand cooling efficiency and reduce the waste and defective rate of castings.
In order to achieve the above purpose, the invention provides a multi-stage air-cooled molding sand cooling device, which comprises a lifting machine and a cooling sand warehouse, wherein a multi-stage cooling device, an air draft dust removing device and a spraying device are arranged in the cooling sand warehouse, the air draft dust removing device and the spraying device are arranged at the top of the cooling sand warehouse, a discharging hopper at the top of the cooling sand warehouse is connected with the top of the lifting machine, the multi-stage cooling device comprises a plurality of cooling mechanisms, the cooling mechanisms are fixed at two sides of the cooling sand warehouse from top to bottom and are arranged in a crossing manner, each cooling mechanism comprises a sand blowing pipe, a blower and a driving motor, the driving motor and the blower are fixed at the outer side of the cooling sand warehouse through a mounting plate, the driving motor is connected with the sand blowing machine through a conveying belt, the sand blowing machine is arranged in the cooling sand warehouse, the blower is connected with one end of the blowing pipe, and the other end of the blowing pipe penetrates through the cooling sand warehouse and is arranged opposite to sand flow.
Preferably, the air suction dust removing device comprises a dust collecting cover, an air suction pipeline and an air suction fan, wherein the air suction fan is connected with one end of the air suction pipeline, the other end of the air suction pipeline is connected with the dust collecting cover, and the dust collecting cover is fixed at the top of the cooling sand warehouse.
Preferably, the spraying device comprises a water supply pipe and a sprayer, and the sprayer is connected with the water supply pipe.
Preferably, the sand pumping machine comprises a driven wheel, a driving wheel, a conveying belt and a frame, wherein the conveying belt is arranged on the driven wheel and the driving wheel, the driven wheel and the driving wheel are both fixed on the frame, the frame is obliquely fixed on the inner wall of the cooling sand warehouse through a connecting plate, and the inclination angle of the frame is 56-65 degrees.
Preferably, the cooling sand reservoir bottom is fixed with sand reservoir landing leg, put sand flashboard and play sand pipeline, cooling sand reservoir outer wall welding has flat steel strengthening rib.
A molding sand cooling method based on the multi-stage air-cooled molding sand cooling equipment comprises the following specific steps of,
Step S1: the number and the inclination angle of cooling mechanisms in the multi-stage cooling device are adjusted according to actual conditions;
Step S2: starting a lifting machine, lifting high-temperature molding sand to a blanking hopper, and starting a cooling mechanism and an air draft dust removal device;
Step S3: after the high-temperature hot sand falls onto the first-stage sand blower from the top, the first-stage sand blower throws the molding sand and forcibly blows and cools by a blowing pipe below the sand blower, the molding sand lifted by the first-stage sand blower falls onto the opposite second-stage sand blower, the molding sand lifted by the second-stage sand blower and forcibly blows and cools by a blowing pipe below the second-stage sand blower, the molding sand lifted by the second-stage sand blower falls onto the opposite third-stage sand blower, the molding sand lifted by the third-stage sand blower and forcibly blows and cools by a blowing pipe below the third-stage sand blower, and the molding sand is sequentially cooled in multiple stages, and meanwhile, hot air is pumped upwards by an air draft dust collector;
Step S4: and adjusting the sand discharge flashboard according to actual needs to control the discharge flow.
Therefore, the multistage air-cooled molding sand cooling equipment and the molding sand cooling method adopting the structure are suitable for production environments with larger production capacity, large molding sand circulation quantity and higher circulation frequency, and the quantity and the inclination angle of the cooling mechanisms are determined according to actual production requirements, so that high-temperature molding sand is lifted and air-cooled for many times in the falling process, the molding sand cooling efficiency is greatly improved, and the casting waste and defective rate is reduced; and whether to spray is selected according to the type of molding sand.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of a multi-stage air-cooled sand cooling apparatus according to the present invention;
FIG. 2 is a side view of the cooling mechanism of the present invention;
fig. 3 is a top view of the cooling mechanism of the present invention.
Reference numerals
1. A hoist; 2. a sand discharging hopper; 3. a dust collection cover; 4. an air draft pipeline; 5. a water supply pipe; 6. a sprayer; 7. a connecting plate; 8. a sand blower; 9. a blower; 10. a driving motor; 11. a blowing pipe; 12. cooling the sand warehouse; 13. sand flow; 14. sand warehouse supporting legs; 15. sand discharge flashboard; 16. a sand outlet pipeline; 17. a belt pulley; 18. a drive belt; 19. a mounting plate; 8a, driven wheel; 8b, a driving wheel; 8c, conveying belt; 8d, a frame.
Detailed Description
Examples
Fig. 1 is a schematic structural view of a multi-stage air-cooled sand cooling apparatus according to the present invention, fig. 2 is a side view of a cooling mechanism according to the present invention, fig. 3 is a top view of a cooling mechanism according to the present invention, and as shown in the drawings, a multi-stage air-cooled sand cooling apparatus comprises a hoist 1 and a cooling sand reservoir 12, wherein a blanking hopper 2 on the top of the cooling sand reservoir 12 is connected to the top of the hoist 1, and high-temperature sand is transported to the top of the cooling sand reservoir 12. The bottom of the cooling sand warehouse 12 is fixed with a sand warehouse supporting leg 14, a sand discharge flashboard 15 and a sand outlet pipeline 16, and the cooled molding sand falls to the bottom of the molding sand cooling warehouse 12 and is conveyed to the next sand treatment process through the sand outlet pipeline 16. The speed at which the molding sand is sent out from the sand cooling reservoir 12 can be regulated by the size of the opening of the sand-setting shutter 15. Flat steel reinforcing ribs are welded on the outer wall of the cooling sand warehouse 12, so that the strength of the cooling sand warehouse 12 is improved. A multistage cooling device, an air draft dust removal device and a spraying device are arranged in the cooling sand warehouse 12.
The exhaust dust collector and the spray device are arranged at the top of the cooling sand warehouse 12, the exhaust dust collector comprises a dust hood 3, an exhaust pipeline 4 and an exhaust fan (not shown in the figure), the exhaust fan is connected with one end of the exhaust pipeline 4, the other end of the exhaust pipeline 4 is connected with the dust hood 3, the dust hood 3 is fixed at the top of the cooling sand warehouse 12, high-temperature gas and dust are pumped out, and cooling and dust removal are facilitated. The spraying device comprises a water supply pipe 5 and a sprayer 6, and the sprayer 6 is connected with the water supply pipe 5. If the clay green sand is processed in production, a water inlet valve can be opened as required, the sprayer 6 is started to spray water mist to the sand flow 13 in the sand cooling warehouse 12, the cooling strength is improved, the water content of the sand is regulated, and the purpose of rapid cooling is achieved. If resin sand is being treated, it is not necessary to spray water mist and the sprayer 6 is not activated.
The multistage cooling device comprises a plurality of cooling mechanisms, the cooling mechanisms are fixed on two sides of a cooling sand warehouse from top to bottom and are arranged in a crossing manner, molding sand is raised and cooled in sequence, cooling efficiency is greatly improved, the cooling mechanisms comprise a sand raising machine 8, a blowing pipe 11, a blower 9 and a driving motor 10, the driving motor 10 and the blower 9 are fixed on the outer side of the cooling sand warehouse 12 through a mounting plate 19, the driving motor 10 is connected with a belt pulley 17 on a driving wheel 8b of the sand raising machine 8 through a conveying belt 18, the sand raising machine 8 is arranged in the cooling sand warehouse 12, the sand raising machine 8 comprises a driven wheel 8a, a driving wheel 8b, a conveying belt 8c and a rack 8d, the conveying belt 8c is arranged on the driven wheel 8a and the driving wheel 8b, the driven wheel 8a and the driving wheel 8b are all fixed on the rack 8d, the rack 8d is obliquely fixed on the inner wall of the cooling sand warehouse 12 through a connecting plate 7, the rack 8d is fastened on the mounting plate 7 through bolts after the oblique angle of the rack 8d is adjusted, the oblique angle alpha of the rack is 56-65 degrees, and the angle of the rack 8d can be adjusted according to practical conditions, so that molding sand can be dispersed better.
A molding sand cooling method based on the multi-stage air-cooled molding sand cooling equipment comprises the following specific steps of,
Step S1: the number and the inclination angle of cooling mechanisms in the multi-stage cooling device are adjusted according to actual conditions;
Step S2: starting a lifting machine, lifting high-temperature molding sand to a blanking hopper, and starting a cooling mechanism and an air draft dust removal device;
Step S3: after the high-temperature hot sand falls onto the first-stage sand blower from the top, the first-stage sand blower throws the molding sand and forcibly blows and cools by a blowing pipe below the sand blower, the molding sand lifted by the first-stage sand blower falls onto the opposite second-stage sand blower, the molding sand lifted by the second-stage sand blower and forcibly blows and cools by a blowing pipe below the second-stage sand blower, the molding sand lifted by the second-stage sand blower falls onto the opposite third-stage sand blower, the molding sand lifted by the third-stage sand blower and forcibly blows and cools by a blowing pipe below the third-stage sand blower, and the molding sand is sequentially cooled in multiple stages, and meanwhile, hot air is pumped upwards by an air draft dust collector;
Step S4: and adjusting the sand discharge flashboard according to actual needs to control the discharge flow.
The air blower 9 is connected with one end of the blowing pipe 11, and the other end of the blowing pipe 11 penetrates through the cooling sand warehouse 12 to be opposite to the sand flow 13, so that the air cooling effect is achieved. The casting is initially cooled through the shakeout conveying process after being poured in the actual production process, the temperature is 55 ℃ on average when the molding sand is lifted to the top of the molding sand cooling warehouse 12, the temperature of the molding sand in summer is required to be reduced to be lower than 35 ℃, the temperature of the molding sand in other seasons is required to be reduced to be lower than 25 ℃, and the hottest molding sand in summer can be reduced to be lower than 35 ℃ when the molding sand cooling equipment is in actual use in production.
Therefore, the multistage air-cooled molding sand cooling equipment and the molding sand cooling method adopting the structure are suitable for production environments with larger production capacity, large molding sand circulation quantity and higher circulation frequency, and the quantity and the inclination angle of the cooling mechanisms are determined according to actual production requirements, so that high-temperature molding sand is lifted and air-cooled for many times in the falling process, the molding sand cooling efficiency is greatly improved, and the casting waste and defective rate is reduced; and whether to spray is selected according to the type of molding sand.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (5)
1. The utility model provides a multistage forced air cooling molding sand cooling arrangement, includes lifting machine and cooling sand storehouse, its characterized in that: the cooling sand warehouse is internally provided with a multi-stage cooling device, an air draft dust removing device and a spraying device, wherein the air draft dust removing device and the spraying device are arranged at the top of the cooling sand warehouse, a discharging hopper at the top of the cooling sand warehouse is connected with the top of the lifting machine, the multi-stage cooling device comprises a plurality of cooling mechanisms, the cooling mechanisms are fixed at two sides of the cooling sand warehouse from top to bottom and are arranged in a crossing manner, each cooling mechanism comprises a sand blowing machine, a blowing pipe, a blower and a driving motor, the driving motor and the blower are fixed at the outer side of the cooling sand warehouse through mounting plates, the driving motor is connected with the sand blowing machine through a conveying belt, the sand blowing machine is arranged in the cooling sand warehouse, the blower is connected with one end of the blowing pipe, and the other end of the blowing pipe penetrates through the cooling sand warehouse and is arranged opposite to sand flow;
The sand pumping machine comprises a driven wheel, a driving wheel, a conveying belt and a frame, wherein the conveying belt is arranged on the driven wheel and the driving wheel, the driven wheel and the driving wheel are both fixed on the frame, the frame is obliquely fixed on the inner wall of the cooling sand warehouse through a connecting plate, and the inclination angle of the frame is 56-65 degrees.
2. A multi-stage air-cooled sand cooling apparatus according to claim 1, characterized in that: the air draft dust removal device comprises a dust hood, an air draft pipeline and an air draft fan, wherein the air draft fan is connected with one end of the air draft pipeline, the other end of the air draft pipeline is connected with the dust hood, and the dust hood is fixed at the top of the cooling sand warehouse.
3. A multi-stage air-cooled sand cooling apparatus according to claim 1, characterized in that: the spraying device comprises a water supply pipe and a sprayer, and the sprayer is connected with the water supply pipe.
4. A multi-stage air-cooled sand cooling apparatus according to claim 1, characterized in that: the cooling sand warehouse bottom is fixed with sand warehouse landing leg, put sand flashboard and go out sand pipeline, cooling sand warehouse outer wall welding has flat steel strengthening rib.
5. A sand cooling method based on the multi-stage air-cooled sand cooling apparatus according to any one of claims 1 to 4, characterized in that: the specific steps are as follows,
Step S1: the number and the inclination angle of cooling mechanisms in the multi-stage cooling device are adjusted according to actual conditions;
Step S2: starting a lifting machine, lifting high-temperature molding sand to a blanking hopper, and starting a cooling mechanism and an air draft dust removal device;
Step S3: after the high-temperature hot sand falls onto the first-stage sand blower from the top, the first-stage sand blower throws the molding sand and forcibly blows and cools by a blowing pipe below the sand blower, the molding sand lifted by the first-stage sand blower falls onto the opposite second-stage sand blower, the molding sand lifted by the second-stage sand blower and forcibly blows and cools by a blowing pipe below the second-stage sand blower, the molding sand lifted by the second-stage sand blower falls onto the opposite third-stage sand blower, the molding sand lifted by the third-stage sand blower and forcibly blows and cools by a blowing pipe below the third-stage sand blower, and the molding sand is sequentially cooled in multiple stages, and meanwhile, hot air is pumped upwards by an air draft dust collector;
Step S4: and adjusting the sand discharge flashboard according to actual needs to control the discharge flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110227215.7A CN113020539B (en) | 2021-03-01 | 2021-03-01 | Multistage air-cooled molding sand cooling equipment and molding sand cooling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110227215.7A CN113020539B (en) | 2021-03-01 | 2021-03-01 | Multistage air-cooled molding sand cooling equipment and molding sand cooling method thereof |
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| Publication Number | Publication Date |
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| CN113020539A CN113020539A (en) | 2021-06-25 |
| CN113020539B true CN113020539B (en) | 2024-04-30 |
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| CN113020539A (en) | 2021-06-25 |
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