CN207751334U - A kind of roaster blowning installation - Google Patents
A kind of roaster blowning installation Download PDFInfo
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- CN207751334U CN207751334U CN201721820127.3U CN201721820127U CN207751334U CN 207751334 U CN207751334 U CN 207751334U CN 201721820127 U CN201721820127 U CN 201721820127U CN 207751334 U CN207751334 U CN 207751334U
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- roaster
- casting mold
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- burner hearth
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Abstract
The utility model discloses a kind of roaster blowning installations, for realizing oxygen-enriched combustion-supporting to the cavity interior orientation for the casting mold being placed in the burner hearth of roaster conveying oxygen-enriched air in roasting, and drifting dust operation, including air supply unit, vent line and insufflation unit can be carried out to casting mold when roasting is to hot stage；Air supply unit is set to outside the burner hearth of roaster, and insufflation unit is set in the burner hearth of roaster；Air supply unit is connected to by vent line with insufflation unit, so that the insufflation unit carries out oxygen-enriched combustion-supporting and drifting dust operation to the casting mold in burner hearth.The roaster blowning installation of the utility model can realize oxygen-enriched combustion-supporting to the cavity interior orientation of casting mold conveying oxygen-enriched air in roasting, and can carry out drifting dust operation to casting mold when roasting is to hot stage.
Description
Technical field
The utility model is related to roaster technical fields, and in particular to a kind of roaster blowning installation.
Background technology
Currently, gold, silver, copper jewellery mainly use gypsum mould wax-loss casting process to produce, typical process flow is：It makes
Wax-pattern --- --- making gypsum mould, --- clear up planting wax tree by metal charge melting --- cast ---.Wherein,
The process that gypsum mould is very crucial in whole flow process is made, it includes mainly following link：It is blended gypsum slurry, by slurry
Be filled into casting mold cylinder, casting mold cylinder standing make gypsum slurry solidification enhancing, casting mold be put into steam oven carry out steam dewaxing or
It is directly placed into roasting dewaxing in roaster, casting mold is put into roasting in roaster, casting mold is adjusted to casting required temperature.Casting mold makes
Task be the clear shape for accurately copying wax tree, formed with sufficient intensity, type wall is bright and clean, thorough burnings dehydration point, has
There is the cavity of certain venting capability.Mold quality is the basis for obtaining premium casting, and the residual carbon of wherein casting mold inner wall is evaluation
The important parameter of mo(U)ld face quality, it is the imperfect combustion due to wax, formed solid residue be attracted on type wall and
It is formed.Influence of the residual carbon to Jewelry casting quality is mainly manifested in following aspect：
(1) to the influence of gypsum thermal stability.For gypsum mould, the intensity of casting mold is first by the matter of gypsum adhesive
Amount determines.It since the high high-temp stability of calcium sulfate is poor, is mixed when with silica, gypsum, which is more than 750 DEG C, to be occurred
It decomposes.And when residual carbon occurs in inner wall during mold roasting, the decomposition temperature of gypsum can further decrease.If roasting
The decomposition of gypsum occurs in the process, the defects of sand holes, coarse easily occurs in cast(ing) surface, if occurred during casting of molten metal
The defects of decomposition, casting will generate sbrinkage blowhole, sand holes.
(2) when dissolved oxygen in molten metal or when there is copper oxide, carbon can react with oxygen or copper oxide after cast, be formed
CO or CO2Gas when reacting especially violent sometimes, can cause local moment microburst, casting is caused stomata or sand holes occur
Defect.
(3) presence of residual carbon, makes molten metal be contaminated, and is degrading its reuse performance, so that Foundry Production is absorbed in pernicious
Cycle.
Residual carbon, which occurs, in gypsum mould inner wall can obviously deteriorate casting quality, therefore must try to disappear when making gypsum mould
Except the residual carbon of inner wall.But the structure design existing defects of existing mold roasting stove, the effect in terms of eliminating casting mold residual carbon
Fruit is bad.Most of roaster be common chamber type electric resistance furnace, in-furnace temperature uniformity is poor, fire door nearby and stove center casting
Often there is residual carbon problem because roasting is insufficient in type, and further increasing temperature will cause the casting mold at other positions burning occur
Risk.In addition, when placing casting mold, generally place two layers, upper layer casting mold directly bears against the top surface of lower layer's casting mold, cross-ventilation
Difference.To improve the residual carbon reduced in casting mold, the roasting time for extending hot stage is needed, energy consumption is both increased, is reduced
Production efficiency, and effect and bad.Some enterprises are semi-open by fire door when roasting is to high temperature, introduced into burner hearth fresh
Air, but the effect of this way is also limited, because fresh air is not easily accessible in casting mold cavity, and in air
Oxygen concentration is low, therefore bad to the residual carbon combustion-supporting effect in cavity, is that the fire door opened more exacerbates in-furnace temperature instead
Inhomogeneities, and resistance wire in stove is easy oxidation, shortens the working life.It is to improve mold roasting matter sometimes in production
The casting mold of roasting to high temperature is taken out out of burner hearth, is aspirated to casting mold cavity with vacuum cleaner, so as to reduction type intracavitary by amount
Residual carbon and ashes, but there are typical problems for this way, are that the taking-up placement of high temperature casting mold is aspirated in air first
When operation, easily cause casting mold be quickly cooled down and non-uniform temperature, make to occur shrinkage stress in casting mold and cause to crack, secondly
It is easily destroyed sprue cup surface when being suction, causes to be susceptible to sand holes defect when cast.
Utility model content
The purpose of this utility model is to provide a kind of roaster blowning installation, can be in roasting to the cavity of casting mold
Interior orientation conveys oxygen-enriched air and realizes oxygen-enriched combustion-supporting, and can carry out drifting dust operation to casting mold when roasting is to hot stage.
To achieve the above object, a kind of roaster blowning installation provided by the utility model, for roasting when to
The cavity interior orientation conveying oxygen-enriched air for being placed on the casting mold in the burner hearth of roaster realizes oxygen-enriched combustion-supporting, and can be in roasting to height
Drifting dust operation, including air supply unit, vent line and insufflation unit are carried out to casting mold when thermophase；The air supply unit is set to roasting
Outside the burner hearth for burning stove, the insufflation unit is set in the burner hearth of roaster；The air supply unit passes through the vent line and institute
Insufflation unit connection is stated, so that the insufflation unit carries out oxygen-enriched combustion-supporting and drifting dust operation to the casting mold in burner hearth.
In above-mentioned roaster blowning installation, the air supply unit includes gas tank, and the vent line includes center culvert
And gas-guide tube, the insufflation unit include with the gas-guide tube be connected to and with the casting mold quantity in the burner hearth of roaster it is identical and
One-to-one blowing nozzle；The blowing nozzle is set on the gas-guide tube, and the gas-guide tube and blowing nozzle are set to roaster
In burner hearth；
The gas tank is connected to one end of the center culvert, and the other end of the center culvert passes through the furnace shell of roaster
It is connected to the gas-guide tube in the burner hearth of roaster.
In above-mentioned roaster blowning installation, the gas-guide tube includes interconnected gas blow pipe and circular ring shape conduit, institute
It states and is uniformly provided with the blowing nozzle on circular ring shape conduit；The circular ring shape conduit is connected by the gas blow pipe and the center culvert
It is logical.
In above-mentioned roaster blowning installation, the gas tank is set to the bottom of roaster.
In above-mentioned roaster blowning installation, the gas tank is equipped with compressed air inlet port, oxygen air inlet, for controlling
Make the air pressure of the compressed air inlet port and oxygen air inlet and the pressure reducing valve of flow.
In above-mentioned roaster blowning installation, the blowing nozzle is vertically upward.
In above-mentioned roaster blowning installation, the blowing nozzle is higher by the upper surface 5-30mm of the circular ring shape conduit.
Further include bracket system in above-mentioned roaster blowning installation, the bracket system includes shaft, between the upper and lower every setting
Set the first bracket unit and the second bracket unit for placing casting mold in the shaft；
First bracket unit and the second bracket unit include multiple annulus of concentric spacing setting, are in rice font diameter
To the spoke of distribution；The spoke is sequentially connected multiple annulus, and the end of the spoke and the inner wall of the burner hearth exist
Gap；
The gas tank is set to the lower section of the shaft, and the center culvert is set in the shaft；The first bracket list
Member and the second bracket unit are correspondingly provided with the gas blow pipe；Multiple circles in first bracket unit and the second bracket unit
There are one annulus it is the circular ring shape conduit, the circular ring shape conduit in first bracket unit and second bracket in ring
Circular ring shape conduit on unit is uniformly provided with the blowing nozzle；
The lower end of the center culvert is connected to the gas tank, one end of the upper end of the center culvert and the gas blow pipe
Connection, the other end of the gas blow pipe are connected to the circular ring shape conduit.
The utility model has the advantages that compared with prior art：
Due to equipped with can to the cavity interior orientation of casting mold convey oxygen-enriched air realize oxygen-enriched combustion-supporting blowning installation, casting mold
Residual carbon combustion-supporting effect in cavity is good, and can be by blowing without taking out casting mold out of burner hearth to hot stage roasting
Device of air to casting mold start drifting dust operation, avoid casting mold be quickly cooled down and non-uniform temperature.
Description of the drawings
Fig. 1 is the structural schematic diagram when roaster of the utility model embodiment is installed to roaster with blowning installation；
Fig. 2 is the vertical view of the bracket system of the roaster blowning installation of the utility model embodiment.
Wherein, 11, burner hearth；31, gas tank；311, compressed air inlet port；312, oxygen air inlet；32, center culvert；
33, gas blow pipe；34, blowing nozzle；41, the first bracket unit；42, the second bracket unit；43, annulus；44, spoke；45, circular ring shape
Conduit；46, shaft；5, casting mold.
Specific implementation mode
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
In conjunction with shown in Fig. 1 and Fig. 2, a kind of roaster blowning installation provided by the utility model, in roasting
Oxygen-enriched combustion-supporting is realized to the cavity interior orientation for the casting mold 5 being placed in the burner hearth 11 of roaster conveying oxygen-enriched air, and can roasted
Drifting dust operation, including air supply unit, vent line and insufflation unit are carried out to casting mold 5 when burning hot stage；Air supply unit is set
In outside the burner hearth 11 of roaster, insufflation unit is set in the burner hearth 11 of roaster；Air supply unit passes through vent line and list of blowing
Member connection, so that insufflation unit carries out oxygen-enriched combustion-supporting and drifting dust operation to the casting mold 5 in burner hearth 11.
In conjunction with shown in Fig. 1 and Fig. 2, it is preferable that air supply unit includes gas tank 31, and vent line includes center culvert 32 and leads
Tracheae, insufflation unit include with gas-guide tube connection and it is identical and one-to-one as 5 quantity of casting mold in the burner hearth of roaster 11
Blowing nozzle 34；Blowing nozzle 34 is set on gas-guide tube, and gas-guide tube and blowing nozzle 34 are set in the burner hearth 11 of roaster；
Gas tank 31 is connected to one end of center culvert 32, and the other end of center culvert 32 passes through the furnace shell of roaster and is located at
Gas-guide tube connection in the burner hearth 11 of roaster.
In conjunction with shown in Fig. 1 and Fig. 2, it is preferable that gas-guide tube includes interconnected gas blow pipe 33 and circular ring shape conduit 45, circle
Blowing nozzle 34 is uniformly provided on ring duct 45；Circular ring shape conduit 45 is connected to by gas blow pipe 33 with center culvert 32.
In conjunction with shown in Fig. 1 and Fig. 2, it is preferable that gas tank 31 is set to the bottom of roaster.
In conjunction with shown in Fig. 1 and Fig. 2, it is preferable that gas tank 31 be equipped with compressed air inlet port 311, oxygen air inlet 312,
The pressure reducing valve of air pressure and flow for controlling compressed air inlet port 311 and oxygen air inlet 312, can be according to mould when making roasting
Situations such as the characteristics of sample material, calcination temperature section, injects different oxygen AIR Proportionals and different air pressure to 5 cavity of casting mold
Gaseous mixture realizes the function of oxygen-enriched combustion-supporting and air-flow drifting dust.
In conjunction with shown in Fig. 1 and Fig. 2, it is preferable that blowing nozzle 34 is vertically upward；Blowing nozzle 34 is higher by the upper of circular ring shape conduit 45
Surface 5-30mm；It is highly preferred that blowing nozzle 34 is stainless steel gas blow pipe 33
In conjunction with shown in Fig. 1 and Fig. 2, it is preferable that the roaster blowning installation of the utility model embodiment further includes bracket
Device, bracket system include shaft 46, are arranged at intervals on 41 and of the first bracket unit for placing casting mold 5 in shaft 46 up and down
Second bracket unit 42；
First bracket unit 41 and the second bracket unit 42 include multiple annulus 43 of concentric spacing setting, are in rice font
Radially-arranged spoke 44；Spoke 44 is sequentially connected multiple annulus 43, the end of spoke 44 and the inner wall of burner hearth 11 there are gap,
With realize bracket system do not hinder rotation and furnace gas can smoothly pass in and out the cavity of casting mold 55, promote the casting mold for being placed on different parts
55 are heated evenly；
Gas tank 31 is set to the lower section of shaft 46, and center culvert 32 is set in shaft 46；First bracket unit 41 and the second support
Frame unit 42 is correspondingly provided with gas blow pipe 33；Have in multiple annulus 43 in first bracket unit 41 and the second bracket unit 42
One annulus 43 is circular ring shape conduit 45, the circle on circular ring shape conduit 45 and the second bracket unit 42 in the first bracket unit 41
Ring duct 45 is uniformly provided with blowing nozzle 34；
The lower end of center culvert 32 is connected to gas tank 31, and the upper end of center culvert 32 is connected to one end of gas blow pipe 33, is blown
The other end of tracheae 33 is connected to circular ring shape conduit 45.
To sum up, the roaster blowning installation of the utility model, due to rich equipped with that can be conveyed to the cavity interior orientation of casting mold 5
Oxygen air realizes the blowning installation of oxygen-enriched combustion-supporting, and the residual carbon combustion-supporting effect in the cavity of casting mold 5 is good, and arrives high temperature rank in roasting
Casting mold 5 is taken out out of burner hearth 11 and can start drifting dust operation to casting mold 5 by blowning installation by Duan Wuxu, avoids casting mold 5
It is quickly cooled down and non-uniform temperature.
Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill people of the art
Member for, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these improve and
Replacement also should be regarded as the scope of protection of the utility model.
Claims (8)
1. a kind of roaster blowning installation, for default to the cavity for the casting mold being placed in the burner hearth of roaster in roasting
Oxygen-enriched combustion-supporting is realized to conveying oxygen-enriched air, and drifting dust operation can be carried out to casting mold when roasting is to hot stage, and feature exists
In, including air supply unit, vent line and insufflation unit；The air supply unit is set to outside the burner hearth of roaster, and the air blowing is single
Member is set in the burner hearth of roaster；The air supply unit is connected to by the vent line with the insufflation unit, so that described
Insufflation unit carries out oxygen-enriched combustion-supporting and drifting dust operation to the casting mold in burner hearth.
2. roaster blowning installation as described in claim 1, which is characterized in that the air supply unit includes gas tank, described
Vent line includes center culvert and gas-guide tube, the insufflation unit include be connected to the gas-guide tube and with the stove of roaster
Casting mold quantity in thorax is identical and one-to-one blowing nozzle；The blowing nozzle be set to the gas-guide tube on, the gas-guide tube and
Blowing nozzle is set in the burner hearth of roaster；
The gas tank is connected to one end of the center culvert, and the other end of the center culvert passes through furnace shell and the position of roaster
In the gas-guide tube connection in the burner hearth of roaster.
3. roaster blowning installation as claimed in claim 2, which is characterized in that the gas-guide tube includes interconnected blows
Tracheae and circular ring shape conduit are uniformly provided with the blowing nozzle on the circular ring shape conduit；The circular ring shape conduit is blown by described
Tracheae is connected to the center culvert.
4. roaster blowning installation as claimed in claim 2, which is characterized in that the gas tank is set to the bottom of roaster.
5. roaster blowning installation as claimed in claim 2, which is characterized in that the gas tank is equipped with compressed air air inlet
Mouth, oxygen air inlet, the air pressure for controlling the compressed air inlet port and oxygen air inlet and flow pressure reducing valve.
6. roaster blowning installation as claimed in claim 3, which is characterized in that the blowing nozzle is vertically upward.
7. roaster blowning installation as claimed in claim 6, which is characterized in that the blowing nozzle is higher by the circular ring shape and leads
The upper surface 5-30mm of pipe.
8. roaster blowning installation as claimed in claim 3, which is characterized in that further include bracket system, the bracket dress
It sets including shaft, be arranged at intervals on the first bracket unit and the second bracket unit for being used to place casting mold in the shaft up and down；
First bracket unit and the second bracket unit include multiple annulus of concentric spacing setting, in rice shaped radial point
The spoke of cloth；The spoke is sequentially connected multiple annulus, and there are gaps for the inner wall of the end of the spoke and the burner hearth；
The gas tank is set to the lower section of the shaft, and the center culvert is set in the shaft；First bracket unit and
Second bracket unit is correspondingly provided with the gas blow pipe；In multiple annulus in first bracket unit and the second bracket unit
It is the circular ring shape conduit, the circular ring shape conduit in first bracket unit and second bracket unit there are one annulus
On circular ring shape conduit be uniformly provided with the blowing nozzle；
The lower end of the center culvert is connected to the gas tank, and the upper end of the center culvert and one end of the gas blow pipe connect
Logical, the other end of the gas blow pipe is connected to the circular ring shape conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721820127.3U CN207751334U (en) | 2017-12-20 | 2017-12-20 | A kind of roaster blowning installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721820127.3U CN207751334U (en) | 2017-12-20 | 2017-12-20 | A kind of roaster blowning installation |
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| Publication Number | Publication Date |
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| CN207751334U true CN207751334U (en) | 2018-08-21 |
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ID=63150389
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721820127.3U Active CN207751334U (en) | 2017-12-20 | 2017-12-20 | A kind of roaster blowning installation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110090929A (en) * | 2019-05-14 | 2019-08-06 | 洛阳烟云涧青铜器有限公司 | A kind of technique making imitation of an ancient bronze and its smelt roasting system |
-
2017
- 2017-12-20 CN CN201721820127.3U patent/CN207751334U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110090929A (en) * | 2019-05-14 | 2019-08-06 | 洛阳烟云涧青铜器有限公司 | A kind of technique making imitation of an ancient bronze and its smelt roasting system |
| CN110090929B (en) * | 2019-05-14 | 2020-12-04 | 洛阳烟云涧青铜器有限公司 | Process for manufacturing antique bronze ware and smelting and roasting system thereof |
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