CN110802202A - Casting sand rapid drying equipment for gray iron casting - Google Patents
Casting sand rapid drying equipment for gray iron casting Download PDFInfo
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- CN110802202A CN110802202A CN201910899571.6A CN201910899571A CN110802202A CN 110802202 A CN110802202 A CN 110802202A CN 201910899571 A CN201910899571 A CN 201910899571A CN 110802202 A CN110802202 A CN 110802202A
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- box body
- heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses casting sand rapid drying equipment for a gray iron casting, which comprises a heating box body, wherein the heating box body is formed by splicing a first box body, a second box body and a third box body, the first box body is horizontally placed, and the second box body and the third box body are arranged in a slope; a heating rod is erected on the inner wall of the first box body, the first box body is connected with a power box, a vacuum oil pump and an oil tank are arranged on the top of the power box, the vacuum oil pump is connected with a hydraulic rod at the bottom of the first box body, and a feed hopper and an air outlet chimney are arranged on the top of the first box body; the bottom wall of the second box body is provided with a heating plate, the inner wall of the second box body is provided with a support shaft and a scraper, and the support shaft is connected with a motor; the bottom of the third box body is obliquely lapped on the collecting tank, and the side wall of the third box body is communicated with a hot air inlet pipe and a hot air blower. The invention feeds the sandstone raw material in a vibration feeding mode, and the sandstone feeding direction is opposite to the hot air flow direction by matching with the stirring effect improved by the scraper, so that a more uniform convection stepped heat exchange method is formed; the heating efficiency is high, the heating is more uniform, the moisture in the sand is discharged effectively, and the moisture removal rate is high.
Description
Technical Field
The invention relates to the technical field of pig iron casting, in particular to casting sand rapid drying equipment for gray iron castings.
Background
In addition to ensuring chemical composition stability during pig iron casting, cast pig iron ingots also have some common casting defects, including dross iron, vortex iron, hollow iron, and the like. Whether the inner cavity of the sand core mold is dried or not is related to the success or failure of casting of the casting. For example, the vortex iron is mainly formed by that the moisture attached to the inner cavity of the die is not dried and is rapidly boiled after meeting the molten iron, so that the molten iron is continuously rolled in the die and is gradually cooled and solidified along with the molten iron.
The drying of current casting sand mainly adopts hot-blast drying collocation conveyer belt, perhaps directly adopts the cylinder stirring to dry, and the smoke and dust is great at stoving in-process, and dry inhomogeneous, and the moisture discharges unevenly, causes to get damp, and drying efficiency is low, very easily leads to the casting failure.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides casting sand quick drying equipment for a gray iron casting.
In order to achieve the purpose, the invention adopts the following technical scheme:
a quick drying device for casting sand of gray iron castings comprises a heating box body, wherein the heating box body is formed by splicing a first box body, a second box body and a third box body, the first box body, the second box body and the third box body are square flat box-shaped, the first box body is horizontally placed, one side wall of the first box body is communicated with that of the second box body, the side wall of the first box body, far away from the second box body, is a closed surface, the outer side wall of the first box body is fixedly connected with a power supply box, and heating rods distributed at equal intervals are erected on the inner wall of the first box body;
the second box body is placed in a slope, the slope degree is 30-50 degrees, the top end face of the slope of the second box body is communicated with the first box body, the bottom end face of the slope of the second box body is communicated with the third box body, a heating plate is laid on the upper surface of the bottom wall of the second box body, a support shaft is erected in the second box body, the support shaft and the heating rod are parallel to each other, the length direction of the support shaft is perpendicular to the direction of the slope, the support shaft is fixedly sleeved with a scraper through a flat key, the section profile of the scraper is specifically in a special shape formed by three directly different arcs, the shortest distance between the tip of the scraper and the heating plate is 0.1 cm;
the third box body is also placed in a slope, the slope degree is 5-10 degrees, the top end face of the slope of the third box body is communicated with the second box body, the bottom end face of the slope of the third box body is positioned right above the collecting tank, the bottom position of the third box body, which is far away from the second box body, is obliquely lapped at the top of one tank wall of the collecting tank, and the side wall of the third box body is provided with a hot air inlet pipe which is communicated with a hot air blower;
the bottom surface of the first box body is fixedly connected with a hydraulic rod, the hydraulic rod consists of a piston rod section and cylinders, the top end of the piston rod section is fixedly connected with the first box body, the bottom end of each cylinder is fixed on the ground, the cylinders are communicated through oil pipes, and the top surface of the first box body is provided with a feed hopper and an air outlet chimney;
the top of the power supply box is fixedly provided with a vacuum oil pump and an oil tank, the bottom of the oil tank is connected with the vacuum oil pump through an oil pipe, and the vacuum oil pump is communicated with the cylinder of one of the hydraulic rods through the oil pipe.
Preferably, the power supply box is internally provided with a lithium battery, a voltage stabilizer and a controller, and the controller is respectively provided with a pin wire which is electrically connected with the heating rod, the heating plate, the air heater, the motor and the vacuum oil pump.
Preferably, the surface of the heating rod is paved with a frosted layer.
Preferably, the heating plate is in particular a resistance wire heating plate.
Preferably, the air heater is a BGE industrial air heater of 50 kW.
Compared with the prior art, the invention has the beneficial effects that:
the heating box body is a stepped box body, so that the sandstone raw material can slowly slide down; the reciprocating motion of the hydraulic rod is controlled by the oil pump to cause the fluctuation and the vibration of the heating box body; the sandstone raw material is fed in a vibration feeding mode, and the feeding direction of the sandstone is opposite to the direction of hot air flow by matching with the stirring effect promoted by the scraper, so that more uniform convective heat exchange treatment is formed; the heating efficiency is high, the heating is more uniform, the moisture in the sand is discharged effectively, and the moisture removal rate is high.
Drawings
Fig. 1 is a schematic view of the internal structure of a rapid drying apparatus for foundry sand used for gray iron castings according to the present invention;
fig. 2 is an external view of a rapid drying apparatus for foundry sand used for gray iron castings according to the present invention;
fig. 3 is a schematic structural diagram of a scraper of a rapid drying equipment for foundry sand used for gray iron castings according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, a quick drying device for casting sand of a gray iron casting comprises a heating box body 1, wherein the heating box body 1 is formed by splicing a first box body 101, a second box body 102 and a third box body 103, the first box body 101, the second box body 102 and the third box body 103 are all square flat box-shaped, the first box body 101 is placed horizontally, one side wall of the first box body 101 is communicated with the side wall of the second box body 102, the side wall of the first box body 101, which is far away from the second box body 102, is a closed surface, the outer side wall of the first box body 101 is fixedly connected with a power supply box 2, and heating rods 3 are erected on the inner wall of the first box body 101 and distributed at equal; the second box body 102 is placed in a slope, the slope degree is 30-50 degrees, the top end face of the slope of the second box body 102 is communicated with the first box body 101, the bottom end face of the slope of the second box body 102 is communicated with the third box body 103, a heating plate 4 is laid on the upper surface of the bottom wall of the second box body 102, a support shaft 5 is erected in the second box body 102, the support shaft 5 and a heating rod 3 are parallel to each other, the length direction of the support shaft 5 is perpendicular to the slope direction, the support shaft 5 is fixedly sleeved with a scraper 6 through a flat key, the section profile of the scraper 6 is specifically in a special shape formed by three sections of directly different arcs, the shortest distance between the tip of the scraper 6 and the heating plate 4 is 0.1cm, and one end; the third box body 103 is also placed in a slope, the slope degree is 5-10 degrees, the top end face of the slope of the third box body 103 is communicated with the second box body 102, the bottom end face of the slope of the third box body 103 is positioned right above the collecting groove 8, the bottom position of the third box body 103 far away from the second box body 102 is obliquely lapped on the top of one groove wall of the collecting groove 8, the side wall of the third box body 103 is provided with a hot air inlet pipe 9, and the hot air inlet pipe 9 is communicated with a hot air blower 10; the bottom surface of the first box 101 is fixedly connected with a hydraulic rod 11, the hydraulic rod 11 consists of a piston rod section and cylinders, the top end of the piston rod section is fixedly connected with the first box 101, the bottom ends of the cylinders are fixed on the ground, the cylinders are communicated through oil pipes, and the top surface of the first box 101 is provided with a feed hopper 12 and an air outlet chimney 13; the top of the power box 2 is fixedly provided with a vacuum oil pump 14 and an oil tank 15, the bottom of the oil tank 15 is connected with the vacuum oil pump 14 through an oil pipe, and the vacuum oil pump 14 is communicated with the cylinder of one of the hydraulic rods 11 through an oil pipe.
Referring to fig. 1-2, a lithium battery, a voltage stabilizer and a controller are arranged in the power box 2, and the controller is respectively provided with a pin wire electrically connected with the heating rod 3, the heating plate 4, the motor 7, the air heater 10 and the vacuum oil pump 14.
The power supply box 2 supplies power to the heating rod 3, the heating plate 4, the air heater 10 and the vacuum oil pump 14, and enables the heating temperatures of the heating rod 3, the heating plate 4 and the air heater 10 to rise in sequence;
7 direction of rotation of control motor makes back shaft 5 and 6 anticlockwise low-speed rotations of scraper, and scraper 6 transports up the grit of meeting the landing, slows down grit landing speed on the one hand, improves heat time, increase heating effect, and on the other hand reduces the gap of grit landing, and the grit layer that makes to fall into in third box 103 is thinner, is convenient for carry out the heat exchange with hot air current, promotes heating efficiency and moisture and discharges the effect.
The reciprocating type oil pumping-oil absorption of the vacuum oil pump 14 is realized, the reciprocating type contraction-extension of the hydraulic rods 11 is caused, the maximum extension degree of the hydraulic rods 11 is controlled to be less than 5cm, the contraction-extension frequency of each hydraulic rod 11 is consistent but the time is different under the transmission of oil pressure, so that the first box body 101 is vibrated, the whole heating box body 1 is driven to vibrate, the vibrating type feeding of sand and stones is realized, and the sand and stones sequentially roll from the first box body 101, the second box body 102 and the third box body 103 to the collecting box 8.
Referring to fig. 1, the frosting layer has been laid on heating rod 3's surface, and along with the fluctuation of each hydraulic stem 11, the grit is vibrated at first box 101 to with 3 contact friction of heating rod, be convenient for polish to the grit by a small margin.
Referring to fig. 1, hot plate 4 is the resistance wire hot plate specifically, and hot plate 4 supplies grit to slide down and contact heating, and scraper 6 then upwards promotes the grit, is equivalent to stir the effect of heating to the grit stir-fry.
Referring to fig. 2, the hot air blower 10 is specifically a BGE industrial fan heater of 50kW, and according to the characteristic that hot air automatically floats upwards, the hot air blower 10 discharges the hot air from the third box 103, the second box 102 to the first box 101 in sequence, and the hot air flows through the air outlet chimney 13 in the direction opposite to that of the sandstone materials, so as to form convection heating.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The casting sand rapid drying equipment for the gray iron castings comprises a heating box body (1), and is characterized in that the heating box body (1) is formed by splicing a first box body (101), a second box body (102) and a third box body (103), the first box body (101), the second box body (102) and the third box body (103) are all in a square flat box shape, the first box body (101) is horizontally placed, one side wall of the first box body (101) is communicated with the side wall of the second box body (102), the side wall of the first box body (101) far away from the second box body (102) is a closed surface, the outer side wall of the first box body (101) is fixedly connected with a power supply box (2), and heating rods (3) distributed at equal intervals are erected on the inner wall of the first box body (101);
the second box body (102) is placed in a slope with the slope degree of 30-50 degrees, the top end face of the slope of the second box body (102) is communicated with the first box body (101), the slope bottom end surface of the second box body (102) is communicated with a third box body (103), a heating plate (4) is laid on the upper surface of the bottom wall of the second box body (102), a support shaft (5) is erected in the second box body (102), the support shaft (5) and the heating rod (3) are parallel to each other, the length direction of the support shaft (5) is perpendicular to the slope direction, the support shaft (5) is fixedly sleeved with a scraper (6) through a flat key, the section profile of the scraper (6) is specifically in a special shape formed by three directly different arcs, the shortest distance between the tip of the scraper (6) and the heating plate (4) is 0.1cm, and one end of the support shaft (5) is connected with a motor (7);
the third box body (103) is also placed in a slope, the slope degree is 5-10 degrees, the top end face of the slope of the third box body (103) is communicated with the second box body (102), the bottom end face of the slope of the third box body (103) is positioned right above the collecting groove (8), the bottom position of the third box body (103) far away from the second box body (102) is obliquely lapped on the top of one groove wall of the collecting groove (8), a hot air inlet pipe (9) is arranged on the side wall of the third box body (103), and the hot air inlet pipe (9) is communicated with a hot air blower (10);
the bottom surface of the first box body (101) is fixedly connected with a hydraulic rod (11), the hydraulic rod (11) consists of a piston rod section and cylinders, the top end of the piston rod section is fixedly connected with the first box body (101), the bottom ends of the cylinders are fixed on the ground, the cylinders are communicated through oil pipes, and the top surface of the first box body (101) is provided with a feed hopper (12) and an air outlet chimney (13);
the vacuum oil pump is characterized in that a vacuum oil pump (14) and an oil tank (15) are fixedly arranged at the top of the power box (2), the bottom of the oil tank (15) is connected with the vacuum oil pump (14) through an oil pipe, and the vacuum oil pump (14) is communicated with a cylinder of one of the hydraulic rods (11) through an oil pipe.
2. The equipment for rapidly drying foundry sand used for gray iron castings according to claim 1, characterized in that a lithium battery, a voltage stabilizer and a controller are arranged in the power box (2), and the controller is respectively provided with leg wires electrically connected with the heating rod (3), the heating plate (4), the motor (7), the air heater (10) and the vacuum oil pump (14).
3. The equipment for the rapid drying of foundry sand for gray iron castings according to claim 1, characterized in that the surface of the heating rod (3) is laid with a frosted layer.
4. The equipment for the rapid drying of foundry sand for gray iron castings according to claim 1, characterized in that the heating plates (4) are in particular resistance wire heating plates.
5. Casting sand rapid drying equipment for grey iron castings according to claim 1, characterized in that the hot air blower (10) is in particular a BGE industrial fan heater of 50 kW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899571.6A CN110802202B (en) | 2019-09-23 | 2019-09-23 | Casting sand rapid drying equipment for gray iron casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899571.6A CN110802202B (en) | 2019-09-23 | 2019-09-23 | Casting sand rapid drying equipment for gray iron casting |
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| Publication Number | Publication Date |
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| CN110802202A true CN110802202A (en) | 2020-02-18 |
| CN110802202B CN110802202B (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910899571.6A Active CN110802202B (en) | 2019-09-23 | 2019-09-23 | Casting sand rapid drying equipment for gray iron casting |
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| CN208765435U (en) * | 2018-07-08 | 2019-04-19 | 福建省吉康新型建材有限公司 | A kind of quartz sand drying system |
| CN109708454A (en) * | 2018-12-28 | 2019-05-03 | 新沂市福田石英材料有限公司 | A kind of the removal of impurities drying unit and its application method of glass sand |
| CN209131345U (en) * | 2018-11-12 | 2019-07-19 | 佛山市固昊建材有限公司 | A kind of machinery drum formula mortar raw material stoving device |
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2019
- 2019-09-23 CN CN201910899571.6A patent/CN110802202B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3929642A (en) * | 1974-03-07 | 1975-12-30 | Linatex Corp Of America | Dewatering system |
| JP3438068B2 (en) * | 2000-11-15 | 2003-08-18 | 孝治 大野 | Drying equipment |
| CN201191128Y (en) * | 2008-04-24 | 2009-02-04 | 重庆钢铁(集团)有限责任公司 | Reversed flow type heat-exchanging drying arrangement |
| CN104864694A (en) * | 2015-05-27 | 2015-08-26 | 成都广迈科技有限公司 | Automatic sand drying machine |
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| CN108127812A (en) * | 2017-12-19 | 2018-06-08 | 芜湖荣基实业有限公司 | A kind of surface is covered with the plastic cement high efficiency drying device of moisture |
| CN208653175U (en) * | 2018-04-03 | 2019-03-26 | 杨馥瑄 | One kind being used for stuffing sand metallurgic auxiliary materials automatic temperature controlling oscillating-type drying device |
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| CN110802202B (en) | 2020-12-18 |
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