CN108941462A - Casting ceramic filter tube with heating compensation - Google Patents
Casting ceramic filter tube with heating compensation Download PDFInfo
- Publication number
- CN108941462A CN108941462A CN201810728516.6A CN201810728516A CN108941462A CN 108941462 A CN108941462 A CN 108941462A CN 201810728516 A CN201810728516 A CN 201810728516A CN 108941462 A CN108941462 A CN 108941462A
- Authority
- CN
- China
- Prior art keywords
- screen pipe
- ceramic filter
- heating
- filter tube
- casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/086—Filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Filtering Materials (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
This case is related to a kind of casting ceramic filter tube with heating compensation, it include: feed inlet, screen pipe, discharge port and heating tube, screen pipe is in the shape of a spiral, the middle vacancy of helical form screen pipe is equipped with heating tube, screen pipe both ends are connected with inlet port and outlet port respectively, and screen pipe includes filtering meshes, ceramic layer and insulating layer from inside to outside, and the ceramic layer inner wall is equipped with the slag collecting pit of several recess；Casting ceramic filter tube with heating compensation of the invention, molten metal is not necessarily to penetrate screen pipe, can effectively reduce filtration resistance and reduces the gas forming amount of strainer in filtering, when molten metal high speed passes through screen pipe, impurity is adsorbed or is retained by its inner wall, can reach preferable filter effect.
Description
Technical field
The invention belongs to casting fields, and in particular to a kind of casting ceramic filter tube with heating compensation.
Background technique
In foundry industry, being mingled with is a kind of very important type in casting flaw, account for the half of defect total amount with
On, all there may be this defects in all casting, and only severity is different.
In casting process, the impurity that molten metal contains include containing calcium carbonate and iron, manganese, aluminium oxide slag,
Unmelted inovulant particle, sulfide, the solid impurities such as magnesium silicate, remaining solvent, the density of partial impurities is close, field trash
It is difficult to float, along with may there are other field trashes such as sand to fall into molten aluminum in casting process from mould gate, if these
Liquid/solid non-metallic inclusion enters cast-internal with casting, it is easy to slag blister, sand holes, core and other issues are generated,
It not only results in gas leakage and generates waste product, while also will affect the mechanical property of material.
Farthest to filter field trash, domestic and international manufacturing enterprise often places filter screen at cast gate, common are
Wire netting, fibrous filter net, foam ceramic filter, straight-bore ceramic filter.Traditional wire netting will have a direct impact on because of Fe harmful element
The cast gate that mechanical castings scale off simultaneously cannot directly melt down use；Fibrous filter net filter effect is not good enough, is easy cracking
It is difficult installation to fix, casting is easily made to generate stomata, slag stomata class defect；Although foam ceramic filter and straight-bore ceramic filter aluminium skimmings
Use can be recycled, but filter screen manufacturing cost is high, it is frangible and be difficult to fix.
In addition, part strainer can also cause greatly casting to generate gross blow hole due to filter screen gas forming amount, lead to rate of wasted casting product
The problems such as raising.
Summary of the invention
The object of the present invention is to provide a kind of casting ceramics with heating compensation of impurity in energy high efficiency filter molten metal
Screen pipe.
It is a further object to provide a kind of casting ceramic filter tubes with heating compensation of low gas forming amount.
In order to solve the above-mentioned technical problem, the invention discloses a kind of casting ceramic filter tube with heating compensation,
Be characterized in that, comprising: feed inlet, screen pipe, discharge port and heating tube, screen pipe in the shape of a spiral, helical form screen pipe it is hollow
Place is equipped with heating tube, and screen pipe both ends are connected with inlet port and outlet port respectively, screen pipe include from inside to outside filtering meshes,
Ceramic layer and insulating layer, the ceramic layer inner wall are equipped with the slag collecting pit of several recess.Spiral helicine screen pipe makes high-pressure metal liquid
It is quickly rotated when passing through, the centrifugal force of generation gets rid of the impurity in molten metal to filtering inside pipe wall, is collected by slag collecting pit；Due to
The presence of filtering meshes, molten metal can generate sinuous flow when flowing through rough filtering inside pipe wall, drive in impurity impact filtration pipe
Wall achievees the purpose that impurity screening to be collected by slag collecting pit, in entire filter process, since molten metal is not through ceramics
Layer, gas forming amount are greatly reduced compared with strainer mold casting filter.
Preferably, one end caliber that the screen pipe is connected with feed inlet is greater than what screen pipe was connected with discharge port
One end, screen pipe are gradually reduced from feed inlet one end to discharge port one end caliber；The screen pipe be connected with discharge port one
Internal diameter is held to be no more than 10mm.Since screen pipe is gradually reduced from feed inlet one end to discharge port one end caliber, under wind tunnel effect,
Speed of the molten metal in screen pipe is getting faster, to keep the centrifugal force that impurity is subject in molten metal increasing, to make
Impurity is separated；One end internal diameter that the screen pipe is connected with discharge port is no more than 10mm, if filtering bore is excessive, can lead
Filter effect is caused to be deteriorated.
Preferably, the ceramic layer is zircite porous ceramic.Improve the effective area for participating in filtering and impurity collection.
Preferably, the slag collecting pit is in be open towards the bag-shaped of feed inlet end.It is no longer flowed after so that impurity is entered slag collecting pit
Out.
Preferably, the slag collecting pit depth 1-3mm, maximum gauge 1-2mm.Suitable pit type is conducive to using rear waste residue
It washes out, comes into operation again.
Preferably, the mesh diameter of the filtering meshes is 1.4-1.6mm, and porosity is 30-50 mesh.Filter screen plays
The effect that primary filtration is collected.
Preferably, the filtering meshes surface is coated with high-temperature resistant coating or refractory material.Filtering meshes web material can be protected
With prevent web material pollute molten metal.
Preferably, the insulating layer is ceramic thermal insulation material.Prevent molten metal from occurring significantly cooling down in filtering.
Preferably, the heating tube is Elema heating tube.Play the role of compensation heating.
Preferably, the casting with ceramic filter tube after each, must use concentration 2-5% acetum it is inverse
10-20min is activated to wash cycles, can be come into operation again after dry；After a number of uses, filtering meshes should be replaced, are replaced
When, the spiral filter screen of disk, which is rotated into screen pipe, can be completed installation.
It is worth noting that the present invention is poor less than the contaminant filter effect of 0.1mm to partial size in molten metal, but the part
Influence of the impurity to casting quality is smaller；In addition, larger pressure must be applied to molten metal in use, so that molten metal high speed flows through
Screen pipe.
The utility model has the advantages that
Casting ceramic filter tube with heating compensation of the invention, molten metal are not necessarily to penetrate screen pipe, can effectively reduce
Filtration resistance and the gas forming amount for reducing strainer in filtering, when molten metal high speed passes through screen pipe, impurity adsorbed by its inner wall or
Retention, can reach preferable filter effect.
Detailed description of the invention
Fig. 1 is the casting ceramic filter tube structural schematic diagram with heating compensation.
Fig. 2 is screen pipe cross-sectional view.
Specific embodiment
Below by embodiment, the present invention is described in further detail, to enable those skilled in the art referring to specification
Text can be implemented accordingly.
Such as " have " it should be appreciated that used herein, "comprising" and " comprising " term are not precluded one or more
The presence or addition of a other elements or combinations thereof.
Embodiment 1
As shown in Figure 1, 2, a kind of casting ceramic filter tube with heating compensation, comprising: feed inlet 1, screen pipe 2 go out
Material mouth 3 and heating tube 4, in the shape of a spiral, the middle vacancy of helical form screen pipe 2 is equipped with heating tube 4,2 both ends of screen pipe point to screen pipe 2
It is not connected with feed inlet 1 and discharge port 3, screen pipe 2 includes filtering meshes 210, ceramic layer 220 and insulating layer from inside to outside
230,220 inner wall of ceramic layer is equipped with the slag collecting pit 221 of several recess.
One end caliber that the screen pipe 2 is connected with feed inlet 1 is greater than one end that screen pipe 2 is connected with discharge port 3,
Screen pipe 2 is gradually reduced from 1 one end of feed inlet to 3 one end caliber of discharge port；The screen pipe 2 be connected with discharge port 3 one
End internal diameter is 10mm.
The ceramic layer 220 is zircite porous ceramic.
The slag collecting pit 221 is in be open towards the bag-shaped of 1 end of feed inlet.
The mesh diameter of the filtering meshes 210 is 1.4-1.6mm, and porosity is 30-40 mesh.
210 surface of filtering meshes is coated with high-temperature resistant coating or refractory material.
Slag collecting pit 221 the depth 1-2.5mm, maximum gauge 2mm.
The insulating layer 230 is ceramic thermal insulation material.
The heating tube 4 is Elema heating tube.
Embodiment 2
It is preheated in use, first heating tube 4 is powered, feed inlet 1 is stored with molten metal or attemperator is connect, will be discharged
Mouth 3 is docked with mouth is poured, and molten metal enters screen pipe 2 under high pressure, is flowed out after filtering from discharge port 3, into material storing box or directly
It taps into and starts to pour into pouring mouth.
Embodiment 3
After use, 5% acetic acid wash liquid is passed through in cooling screen pipe, cleaning solution enters from discharge port 3, from feed inlet
1 goes out, and flow velocity of the cleaning solution in screen pipe 2 is maintained at 1-2m/s, leads to heated-air drying after cleaning activation 10-20min；It is sent out in practice
It is existing, if being aided with the ultrasonic wave of frequency 50KHz or more in cleaning, clean more thorough.
If the large granular impurity or metallic particles residual of larger area occur for 2 walls in screen pipe, concentration can be used and be less than
10% hydrochloric acid rinses 1-2min to filtering inside pipe wall, then in the acetic acid using 5%: nitric acid=2:3 cleaning solution back flush
Heated-air drying after 15-20min.
Such as clean after discovery filter effect it is poor or filtering nozzle nearby there are still part residues, filter screen should be replaced in time
Layer 210.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and embodiment shown and described herein.
Claims (10)
1. a kind of casting ceramic filter tube with heating compensation characterized by comprising feed inlet, screen pipe, discharge port and
Heating tube, in the shape of a spiral, the middle vacancy of helical form screen pipe is equipped with heating tube to screen pipe, screen pipe both ends respectively with feed inlet and
Discharge port is connected, and screen pipe includes filtering meshes, ceramic layer and insulating layer from inside to outside, and the ceramic layer inner wall is equipped with several
The slag collecting pit of recess.
2. the casting ceramic filter tube with heating compensation as described in claim 1, which is characterized in that the screen pipe with into
One end caliber that material mouth is connected is greater than one end that screen pipe is connected with discharge port, and screen pipe is from feed inlet one end to discharge port
One end caliber is gradually reduced；One end internal diameter that the screen pipe is connected with discharge port is no more than 12mm.
3. the casting ceramic filter tube with heating compensation as described in claim 1, which is characterized in that the ceramic layer is oxygen
Change zirconium porous ceramics.
4. the casting ceramic filter tube with heating compensation as described in claim 1, which is characterized in that the slag collecting pit is in open
Mouthful towards the bag-shaped of feed inlet end.
5. the casting ceramic filter tube with heating compensation as described in claim 1, which is characterized in that the filtering meshes
Mesh diameter is 1.4-1.6mm, and porosity is 30-50 mesh.
6. the casting ceramic filter tube with heating compensation as described in claim 1, which is characterized in that the filtering meshes table
Face is coated with high-temperature resistant coating or refractory material.
7. the casting ceramic filter tube with heating compensation as described in claim 1, which is characterized in that the slag collecting pit depth 1-
3mm, maximum gauge 1-2mm.
8. the casting ceramic filter tube with heating compensation as described in claim 1, which is characterized in that the insulating layer is pottery
Porcelain thermal insulation material.
9. the casting ceramic filter tube with heating compensation as described in claim 1, which is characterized in that the heating tube is silicon
Carbon-point heating tube.
10. the casting ceramic filter tube with heating compensation as described in claim 1, which is characterized in that casting pottery
Porcelain screen pipe after each, must use the acetum reverse circulation cleaning activation 10-20min of concentration 2-5%, after dry
It can come into operation again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728516.6A CN108941462B (en) | 2018-07-05 | 2018-07-05 | Ceramic filter tube with heating compensation for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728516.6A CN108941462B (en) | 2018-07-05 | 2018-07-05 | Ceramic filter tube with heating compensation for casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108941462A true CN108941462A (en) | 2018-12-07 |
| CN108941462B CN108941462B (en) | 2020-05-19 |
Family
ID=64485773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810728516.6A Active CN108941462B (en) | 2018-07-05 | 2018-07-05 | Ceramic filter tube with heating compensation for casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108941462B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114436460A (en) * | 2021-12-20 | 2022-05-06 | 江苏飞亚化学工业集团股份有限公司 | Adsorption type sewage treatment system |
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| CN200963671Y (en) * | 2006-10-12 | 2007-10-24 | 济南圣泉集团股份有限公司 | Thermal shock resistant foam ceramic filter for casting |
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| CN200998628Y (en) * | 2007-01-11 | 2008-01-02 | 俞达林 | Magnetic dust gauze for the casting of nonferrous metals |
| CN201150976Y (en) * | 2007-12-26 | 2008-11-19 | 张惠明 | Filtering net for casting liquid of aluminum hub |
| CN201543308U (en) * | 2009-11-24 | 2010-08-11 | 济南圣泉集团股份有限公司 | Filter device for casting |
| KR20120011260A (en) * | 2010-07-28 | 2012-02-07 | 한국전력공사 | System and method for vacuum investment casting |
| CN203508929U (en) * | 2013-09-29 | 2014-04-02 | 常州精棱铸锻有限公司 | Double-layer filter for casting |
| CN205473150U (en) * | 2016-01-22 | 2016-08-17 | 湖州南太湖环保科技发展有限公司 | Energy -saving supplementary heating device |
| CN106439367A (en) * | 2016-12-14 | 2017-02-22 | 青岛美璞精工机械有限公司 | Pipe temperature compensation electric heater |
| CN206455142U (en) * | 2017-02-23 | 2017-09-01 | 十堰市龙岗铸造有限公司 | A kind of foundry cast iron ceramic water filter screen |
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2018
- 2018-07-05 CN CN201810728516.6A patent/CN108941462B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200964836Y (en) * | 2006-08-31 | 2007-10-24 | 葛仲政 | Spiral weld filtering tube |
| CN200963671Y (en) * | 2006-10-12 | 2007-10-24 | 济南圣泉集团股份有限公司 | Thermal shock resistant foam ceramic filter for casting |
| CN200998628Y (en) * | 2007-01-11 | 2008-01-02 | 俞达林 | Magnetic dust gauze for the casting of nonferrous metals |
| CN201150976Y (en) * | 2007-12-26 | 2008-11-19 | 张惠明 | Filtering net for casting liquid of aluminum hub |
| CN201543308U (en) * | 2009-11-24 | 2010-08-11 | 济南圣泉集团股份有限公司 | Filter device for casting |
| KR20120011260A (en) * | 2010-07-28 | 2012-02-07 | 한국전력공사 | System and method for vacuum investment casting |
| CN203508929U (en) * | 2013-09-29 | 2014-04-02 | 常州精棱铸锻有限公司 | Double-layer filter for casting |
| CN205473150U (en) * | 2016-01-22 | 2016-08-17 | 湖州南太湖环保科技发展有限公司 | Energy -saving supplementary heating device |
| CN106439367A (en) * | 2016-12-14 | 2017-02-22 | 青岛美璞精工机械有限公司 | Pipe temperature compensation electric heater |
| CN206455142U (en) * | 2017-02-23 | 2017-09-01 | 十堰市龙岗铸造有限公司 | A kind of foundry cast iron ceramic water filter screen |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114436460A (en) * | 2021-12-20 | 2022-05-06 | 江苏飞亚化学工业集团股份有限公司 | Adsorption type sewage treatment system |
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| Publication number | Publication date |
|---|---|
| CN108941462B (en) | 2020-05-19 |
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