CN104236271A - Molding sand drum dryer - Google Patents
Molding sand drum dryer Download PDFInfo
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- CN104236271A CN104236271A CN201410506908.XA CN201410506908A CN104236271A CN 104236271 A CN104236271 A CN 104236271A CN 201410506908 A CN201410506908 A CN 201410506908A CN 104236271 A CN104236271 A CN 104236271A
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- cylinder
- molding sand
- drum
- roller drier
- jet chimney
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Abstract
The invention relates to a molding sand drum dryer. The molding sand drum dryer comprises a drum, wherein the drum is obliquely arranged relative to the horizontal plane, the upper end of the drum is a feed end, the lower end of the drum is a discharge end, a baffle which is spirally coiled from the feed end to the discharge end is arranged on the inner wall of the drum, the baffle comprises an inclined section and a perpendicular section, and the perpendicular section is perpendicular to the drum. A steam pipe is arranged on the surface of the drum, a gap is reserved between the steam pipe and the outer surface of the drum, one end of the steam pipe is connected with a hot air supply system and is close to the feed end of the drum, the other end of the steam pipe is connected with a hot air recovery system and is close to the discharge end of the drum, the feed end of the drum is connected with the hot air supply system and the discharge end of the drum is connected with the hot air recovery system. The molding sand drum dryer can guarantee more stable drying environment and drying efficiency and can guarantee molding sand drying uniformity and consistency.
Description
Technical field
The present invention relates to molding sand roller drier, it be a kind of can increase molding sand in cylinder through path and extend the roller drier of the time of staying, belong to mechanical field.
Background technology
Molding sand is used for the material of moulding in casting.Molding sand is generally mixed according to a certain percentage by Modeling Materials such as Foundry sand, moulding sand binder and additional things.Molding sand is different by binding agent used, can be divided into clay-bonded sand, water-glass sand, cement bonded sand, resin sand etc.Maximum with clay-bonded sand, water-glass sand and resin sand.
The effect of molding sand in Foundry Production is very important, and the casting wasted product caused because of the poor quality of molding sand accounts for 30 ~ 50% of the total waste product of foundry goods.
Usually to the requirement of molding sand be: 1. there is higher intensity and heat endurance, to bear the effect of various external force and high temperature.
2. good mobility, i.e. the ability of molding sand mutual movement between sand grains under external force or Action of Gravity Field own.
3. certain plasticity, namely molding sand is out of shape under external force, can keep the ability of the shape given after external force is removed.
4. good gas permeability, namely molding sand hole is through the ability of gas.
5. high collapsibility, whether, also known as knockability, namely after casting solidification, whether molding sand easily destroys, the easy performance removed from foundry goods.
Roller drier, be widely used in chemical industry, brewage, manufacture, pharmacy, fertilizer, the aspect such as municipal sludge process.
The operation principle of roller drier is: feed liquid is distributed in rotation, steam-heated cylinder by roller drier, contacts with hot cylinder surface, and the moisture in feed liquid is evaporated, and is then scraped by scraper, through being ground into the drying equipment of product.
Roller drier (also known as rotary drum drier, rotary dryer etc.) is the drying machinery of heat transfer type in a kind of contact.In dry run, heat passes to its outer wall by the inwall of cylinder, through being attached to food material dried on cylinder outer wall face, the moisture evaporation on material, is a kind of manufacturing machine of continuous drying.
The rotating cylinder of roller drier slightly tilts and the pivotal cylinder of energy, and wet stock enters from top, one end, and dry material is from other end collective low.Hot blast enters from feed end or discharge end, discharges from other end top.Cylinder, built with forward flight, under material is constantly taken up in cylindrical shell turning course and spilling, makes it fully contact with thermal current, to improve drying efficiency and to make material move forward.Dried material thermal source is generally hot-air, high-temperature flue gas, steam etc.
The course of work of roller drier is: need in the blow tank of the feed liquid of dry process by head tank person who lives in exile drum dryer, by film-distributing device make material thinly (membranaceous) be attached to cylinder surface, heating medium is connected with in cylinder, food industry many employings steam, pressure is generally at 0.2 ~ 6MPa, temperature is between 120 ~ 150 DEG C, material is conducted heat by simple wall and its hygroscopic water is vaporized in cylinder rotates, roll letter and complete cloth film in a rotation period, vaporization, the processes such as dehydration, dried material is scraped by scraper, through helical feed to storage of finished products groove, finally carry out pulverizing or directly packing.The moisture evaporated in heat transfer, depending on its character by enclosed hood, is incorporated in corresponding treating apparatus and carries out trapping dust or discharge.
The drawback of traditional roller drier:
1. drive this cylinder to rotate by drive mechanism, need to consume a large amount of commercial power, electricity consumption is wasted, and does not meet environmental protection and energy saving theory, for the user, is also the waste of resource, fund simultaneously;
2. material to be dried is scattered in cylinder, follows cylinder rotation and overturns in cylinder, easily causes local desiccation thorough, uneven drying;
3. drums inside is provided with the breaking means to material to be dried, and internal structure is complicated, and after damaged, maintenance difficulty is large;
4. because cylinder will bear the impact of material to be dried, the ability of bearing impact of cylinder is enough strong, so, the quality requirement of cylinder is high, cost of manufacture and material are all very high, and after increasing material cost, the quality of cylinder increases thereupon, increase the power consumption that cylinder uses, increase the electric energy used.
5. material to be dried is scrolled transmission very soon out in cylinder, the length by extending drying machine is needed to extend drying time, increase the fund cost of floor space and equipment, also will certainly increase the power cost of rollers roll, and the maintenance cost of equipment and old of maintenance.
Summary of the invention
In order to solve above-mentioned Problems existing, the invention discloses a kind of molding sand roller drier, this molding sand roller drier, by the design of internal structure, effectively can extend the time of staying of molding sand in drying machine, add drying time, improve drying efficiency.
Molding sand roller drier, comprise cylinder, described cylinder and horizontal plane are arranged, cylinder comprises feed end and discharge end, inner wall of rotary drum is provided with the baffle plate from feed end towards discharge end coiled coil, and described baffle plate comprises the tilting section fixed with drums inside and the vertical section vertical with centre of the drum line be fixedly connected with tilting section.
The surface of described cylinder is provided with jet chimney, and described jet chimney sealed packet is trapped among the surrounding of cylinder, and jet chimney overlaps with centre of the drum line.
The two ends of described jet chimney seal fixing respectively with the corresponding end of cylinder, jet chimney one end connects hot blast supply air system, and this end is near the feed end of cylinder, and the other end connects hot air recycling system, and this end is near the discharge end of cylinder.
The feed end of described cylinder connects hot blast supply air system, and the discharge end of cylinder connects hot air recycling system.
The outer surface of described jet chimney is enclosed with heat-insulation layer.
Described heat-insulation layer is spongy layer.
Described tilting section tilts from the bearing of itself and inner wall of rotary drum towards discharge end, and the angle of inclination of tilting section and cylinder is 40 ° ~ 90 °.
The center line of the free end extend through cylinder of described vertical section.
The present invention, compact conformation, simple, in cylinder and cylinder all pass into hot blast outward, increase the temperature of cylinder, ensure that cylinder has more stable temperature, have stable drying capacity, hot blast is passed in cylinder, be conducive to allowing baffle plate have certain stablizing, when contacting with molding sand, molding sand had to the effect of contact drying, simultaneously, hot blast can take away the moisture that molding sand evaporates away, is conducive to improving the gas guaranteed in cylinder dry, avoids the moisture be evaporated again to be adsorbed by molding sand.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention,
Reference numerals list: 1-cylinder, 2-jet chimney, 3-heat-insulation layer, 4-feed end, 5-discharge end, 6-baffle plate, 7-tilting section, 8-vertical section.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further.Following detailed description of the invention should be understood only be not used in for illustration of the present invention and limit the scope of the invention.It should be noted that, the word "front", "rear" of use is described below, "left", "right", "up" and "down" refer to direction in accompanying drawing, word " interior " and " outward " refer to the direction towards or away from particular elements geometric center respectively.
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
The direction of arrow in accompanying drawing represents the flow direction of hot blast.
Molding sand roller drier, comprise cylinder 1, described cylinder 1 is arranged with horizontal plane, cylinder 1 comprises feed end 4 and discharge end 5, cylinder 1 inwall is provided with the baffle plate 6 from feed end 4 towards discharge end 5 coiled coil, described baffle plate 6 comprise the tilting section 7 fixing with cylinder 1 inside and be fixedly connected with tilting section 7 and with the vertical section 8 of cylinder 1 central axis.When molding sand is dry, enter cylinder 1 from the feed end 4 of cylinder 1, cylinder 1 is in running, cylinder 1 overturns, molding sand pitches between baffle plate 6, first molding sand falls under gravity into the downside of cylinder 1, cylinder 1 is in rolling process, molding sand is followed cylinder 1 and is rotated, when turning to upside, molding sand drops from cylinder 1 under gravity, cylinder 1 is obliquely installed, make molding sand drop get off after, move towards discharge end 5 direction, catch in the process that baffle plate 6 can drop at molding sand, the distance avoiding molding sand to overturn in cylinder 1 once near discharge end 5 is too large, and baffle plate 6 is when catching molding sand, contact with molding sand, baffle plate 6 temperature in hot blast environment raises, become the baffle plate 6 of heat, baffle plate 6 pairs of molding sand of heat play dry effect, improve the drying efficiency of molding sand.Baffle plate 6 has slowed down the speed of molding sand near discharge end 5, molding sand is often reversed once, and molding sand is just smashed once by baffle plate 6 and cylinder 1, increases the loosening degree of molding sand, and molding sand and cylinder 1 and baffle plate 6 contact uniformity coefficient, molding sand can be dried more equably.
The surface of described cylinder 1 is provided with jet chimney 2, and described jet chimney 2 is enclosed in the surrounding of cylinder 1, leaves space between the outer surface of jet chimney 2 and cylinder 1, and jet chimney 2 overlaps with cylinder 1 center line.The two ends of jet chimney 2 are fixed with the corresponding end of cylinder 1 respectively, and jet chimney 2 one end connects hot blast supply air system, and this end is near the feed end 4 of cylinder 1, and the other end connects hot air recycling system, and this end is near the discharge end 5 of cylinder 1.In jet chimney 2, pass into hot blast, hot blast is to cylinder transferring heat, and the temperature allowing cylinder 1 keep higher, is conducive to maintaining the inner temperature of cylinder 1 and stablizes, provide good molding sand dry environment.Spacing uniformity between jet chimney 2 and cylinder 1, is conducive to keeping hot-air flow stable in jet chimney 2.
The feed end 4 of described cylinder 1 connects hot blast supply air system, and the discharge end 5 of cylinder 1 connects hot air recycling system.By passing into hot blast in cylinder 1, can not only take away the moisture that cylinder 1 Sand is evaporated, hot blast blows on molding sand, also can improve the drying efficiency of molding sand.
The outer surface of described jet chimney 2 is enclosed with heat-insulation layer 3, and heat-insulation layer 3 can select spongy layer.Heat-insulation layer 3 reduces heat in jet chimney 2 to run off towards the external world, avoids thermal waste.Spongy layer is a kind of cost-effective heat-insulation layer 3.
Described tilting section 7 tilts from the bearing of itself and cylinder 1 inwall towards discharge end 5, and tilting section 7 is 40 ° ~ 90 ° with the angle of inclination of cylinder 1.Link and the tilting section 7 of vertical section 8 are connected and fixed, the center line of the free end extend through cylinder 1 of vertical section 8.The angle of inclination of tilting section 7 and the direction molding sand that slows down is passed to the speed of discharge end 5, but be unlikely to the direction that change molding sand is passed, after vertical section 8 ensures that molding sand is taken to cylinder 1 top by inertia force, in the process fallen down, all drop on tilting section 7 below, ensure the uniformity of molding sand drying.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned technological means, also comprises the technical scheme be made up of above technical characteristic.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on description, must determine its technical scope according to right.
Claims (8)
1. molding sand roller drier, it is characterized in that comprising cylinder, described cylinder and horizontal plane are arranged, cylinder comprises feed end and discharge end, inner wall of rotary drum is provided with the baffle plate from feed end towards discharge end coiled coil, and described baffle plate comprises the tilting section fixed with inner wall of rotary drum and is fixedly connected with tilting section and the vertical section vertical with centre of the drum line.
2. molding sand roller drier according to claim 1, is characterized in that the surface of described cylinder is provided with jet chimney, leaves space between jet chimney and the outer surface of cylinder, and the center line of jet chimney overlaps with centre of the drum line.
3. molding sand roller drier according to claim 2, it is characterized in that the two ends of described jet chimney are fixed with the corresponding end of cylinder respectively, jet chimney one end connects hot blast supply air system, this end is near the feed end of cylinder, the other end connects hot air recycling system, and this end is near the discharge end of cylinder.
4. molding sand roller drier according to claim 1, it is characterized in that the feed end of described cylinder connects hot blast supply air system, the discharge end of cylinder connects hot air recycling system.
5. molding sand roller drier according to claim 2, is characterized in that the outer surface of described jet chimney is enclosed with heat-insulation layer.
6. molding sand roller drier according to claim 5, is characterized in that described heat-insulation layer is spongy layer.
7. molding sand roller drier according to claim 1, it is characterized in that described tilting section tilts from the bearing of itself and inner wall of rotary drum towards discharge end, tilting section and drum-inclined angle are 40 ° ~ 90 °.
8. molding sand roller drier according to claim 1, is characterized in that the center line of the free end extend through cylinder of described vertical section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410506908.XA CN104236271B (en) | 2014-09-28 | 2014-09-28 | Molding sand roller drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410506908.XA CN104236271B (en) | 2014-09-28 | 2014-09-28 | Molding sand roller drier |
Publications (2)
| Publication Number | Publication Date |
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| CN104236271A true CN104236271A (en) | 2014-12-24 |
| CN104236271B CN104236271B (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410506908.XA Expired - Fee Related CN104236271B (en) | 2014-09-28 | 2014-09-28 | Molding sand roller drier |
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| CN (1) | CN104236271B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052368A (en) * | 2016-05-30 | 2016-10-26 | 合肥雄川机械销售有限公司 | Hot air preheating and drying device for aluminum agricultural machines |
| CN106871623A (en) * | 2017-01-16 | 2017-06-20 | 周华宾 | A kind of portable stalk dryer |
| CN106959001A (en) * | 2017-05-30 | 2017-07-18 | 尹国祥 | A kind of auger mechanism for material heated-air drying |
| CN112108431A (en) * | 2020-08-31 | 2020-12-22 | 深圳绿景环保再生资源有限公司 | Energy-saving sandstone automatic washing machine |
| CN114857895A (en) * | 2022-06-28 | 2022-08-05 | 陇东学院 | Drying device for chemical raw material production |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001272169A (en) * | 2000-03-27 | 2001-10-05 | Kurimoto Ltd | Continuous type rotary drier |
| KR101197302B1 (en) * | 2012-05-11 | 2012-11-05 | 대형환경 주식회사 | Double Pipe Rotary Type Drier |
| CN203323504U (en) * | 2013-06-04 | 2013-12-04 | 山东炳坤腾泰陶瓷科技有限公司 | Device utilizing smoke to dry ceramic frits |
| CN203432238U (en) * | 2013-07-03 | 2014-02-12 | 四川天红牧业有限公司 | Biological feed drying device |
-
2014
- 2014-09-28 CN CN201410506908.XA patent/CN104236271B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001272169A (en) * | 2000-03-27 | 2001-10-05 | Kurimoto Ltd | Continuous type rotary drier |
| KR101197302B1 (en) * | 2012-05-11 | 2012-11-05 | 대형환경 주식회사 | Double Pipe Rotary Type Drier |
| CN203323504U (en) * | 2013-06-04 | 2013-12-04 | 山东炳坤腾泰陶瓷科技有限公司 | Device utilizing smoke to dry ceramic frits |
| CN203432238U (en) * | 2013-07-03 | 2014-02-12 | 四川天红牧业有限公司 | Biological feed drying device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052368A (en) * | 2016-05-30 | 2016-10-26 | 合肥雄川机械销售有限公司 | Hot air preheating and drying device for aluminum agricultural machines |
| CN106871623A (en) * | 2017-01-16 | 2017-06-20 | 周华宾 | A kind of portable stalk dryer |
| CN106959001A (en) * | 2017-05-30 | 2017-07-18 | 尹国祥 | A kind of auger mechanism for material heated-air drying |
| CN112108431A (en) * | 2020-08-31 | 2020-12-22 | 深圳绿景环保再生资源有限公司 | Energy-saving sandstone automatic washing machine |
| CN114857895A (en) * | 2022-06-28 | 2022-08-05 | 陇东学院 | Drying device for chemical raw material production |
| CN114857895B (en) * | 2022-06-28 | 2022-09-20 | 陇东学院 | Drying device for chemical raw material production |
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| Publication number | Publication date |
|---|---|
| CN104236271B (en) | 2016-02-17 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Yonghui Inventor before: Chen Ling Inventor before: Wang Yan Inventor before: Ren Qi Inventor before: Cheng Xiao |
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| COR | Change of bibliographic data | ||
| GR01 | Patent grant | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160122 Address after: Hangzhou City, Zhejiang province Binjiang District 310051 Qian Tang Garden 20 building 1 unit 1902 Chunxiao Applicant after: Zhao Yonghui Address before: 214000 Huishan Economic Development Zone, Jiangsu province Hui Cheng Road, No. 77, No. Applicant before: Wuxi Kangbaisi Machinery Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160217 Termination date: 20160928 |