CN107289788A - Continuous vacuum stove - Google Patents
Continuous vacuum stove Download PDFInfo
- Publication number
- CN107289788A CN107289788A CN201710553635.8A CN201710553635A CN107289788A CN 107289788 A CN107289788 A CN 107289788A CN 201710553635 A CN201710553635 A CN 201710553635A CN 107289788 A CN107289788 A CN 107289788A
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- CN
- China
- Prior art keywords
- section
- chamber
- continuous vacuum
- discharging
- feeding
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
- F27D25/001—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag comprising breaking tools, e.g. hammers, drills, scrapers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The present invention discloses a kind of continuous vacuum stove, and it includes:Feeding preheating section, carries out feeding processing for the raw material to solid powdery and pre-add is heat-treated;Gasification section, for being heat-treated to pre-add after raw material carry out further heating and gasifying, novel substance vapour is generated after chemical reaction directly to form raw material vapour or produce;Condense discharging section, for cool down raw material vapour or novel substance vapour to condense to be formed condense shape finished product and to carry out discharging processing;Feeding preheating section, gasification section and condense discharging section and connect successively settings, and feeding preheating section, vaporization section and condense the equal vacuum sealing setting of discharging section.The continuous vacuum stove of the present invention, feeding, preheating, gasification, condensation and discharging are connected by it, occur chemical reaction suitable for solid high-temperature purifying, solid material gasification and regelation forms the production processes such as new solid product, the large-scale continuous production of the products such as the sub- silicon of oxidation can be achieved, energy consumption is greatly saved.
Description
Technical field
The present invention relates to vacuum drying oven technical field, more particularly to a kind of continuous vacuum stove.
Background technology
At present, most vacuum drying oven are the single-unit furnace of batch (-type) both at home and abroad, and the production process of single-unit furnace is:Charging →
Heating → constant temperature → cooling → discharging, so as to complete a single cycle.The characteristics of this production technology, is that equipment is simple, invests
Less, operation is easy, but is due to that each production is required for heating to cool, and causes that energy use efficiency is high, unit product energy
Consumption is high.
The content of the invention
It is a primary object of the present invention to propose a kind of continuous vacuum stove, its by feeding, preheating, gasification, condense and
Discharging is connected, it is adaptable to which solid high-temperature purifying, solid material gasification occur chemical reaction and regelation forms new consolidate
The production processes such as body product, can be achieved the large-scale continuous production of the products such as the sub- silicon of oxidation, greatly save energy consumption.
To achieve the above object, a kind of continuous vacuum stove that the present invention is provided, the continuous vacuum stove includes:Feeding
Preheating section, carries out feeding processing for the raw material to solid powdery and pre-add is heat-treated;Gasification section, to preheating
The raw material after reason carry out further heating and gasifying, are generated with directly forming raw material vapour or producing after chemical reaction
Novel substance vapour;Discharging section is condensed, formation is condensed for cooling down the raw material vapour or the novel substance vapour
Condense shape finished product and to carry out discharging processing;The feeding preheating section, the gasification section and the condensation discharging section are successively
Connect setting, and the feeding preheating section, the vaporization section and the equal vacuum sealing of the condensation discharging section are set.
Further, the feeding preheating section includes the feeding preheating chamber of tubular structure, and the feeding preheating chamber is built-in with
Spiral feed mechanism and first heater.
Further, the second heating that the gasification section includes the vaporizer of tubular structure and is built in the vaporizer
Device, the front end of the vaporizer is connected with the rear end of the feeding preheating chamber.
Further, the first heater and the secondary heating mechanism are induction heating apparatus, the sensing
Heater includes the first heating coil being located on the inwall of the feeding preheating chamber or is located on the interior of the vaporizer
The second heating coil on wall.
Further, it is described condensation discharging section include condensing chamber and discharge chamber, the side side wall of the condensing chamber with it is described
The rear end of vaporizer is connected setting, and the bottom of the condensing chamber passes through a funnel structure and the top of the discharge chamber carries out phase
Connection is set, and the bottom of the discharge chamber is provided with funneling discharging opening.
Further, the condensing chamber is cold barrel structure, and the condensing chamber is also built-in with rotor segment, for that described will coagulate
The product for tying the condensed on inner walls shape of room is scraped automatically, to be fallen into by the funnel structure in the discharge chamber.
Further, the rotor segment is additionally provided with granulation mat surface, for the condensation on the inwall to the condensing chamber
The product of shape is roughened.
Further, the side side wall of the discharge chamber is provided with vacuum orifice, for the feeding preheating chamber, the gas
Change room, the condensing chamber and the discharge chamber and carry out vacuumize process.
Further, the side side wall of the discharge chamber is provided with gas atmosphere inlet, for the feeding preheating chamber, institute
That states vaporizer, the condensing chamber and discharge chamber progress protective gas is passed through processing.
Further, the discharge chamber is built-in with spiral discharging mechanism.
The continuous vacuum stove that the present invention is provided, it connects feeding preheating section, gasification section and condensation discharging section successively
Set, and the feeding preheating section, vaporization section and condense the equal vacuum sealing of discharging section and set, be allowed to by feeding, preheating, gasification,
Condense and discharging is connected, it is adaptable to which chemical reaction and regelation shape occur for solid high-temperature purifying, solid material gasification
The production processes such as Cheng Xin solid product, can be achieved the large-scale continuous production of the products such as the sub- silicon of oxidation, greatly save energy
Consumption.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation of continuous vacuum stove provided in an embodiment of the present invention.
Embodiment
The embodiment to the present invention is described further below in conjunction with the accompanying drawings.Herein it should be noted that for
The explanation of these embodiments is used to help understand the present invention, but does not constitute limitation of the invention.In addition, disclosed below
As long as each of the invention embodiment in involved technical characteristic do not constitute conflict each other and can just be mutually combined.
As shown in figure 1, the embodiment of the present invention provides a kind of continuous vacuum stove 100, the continuous vacuum stove 100 includes sending
Expect preheating section 110, gasification section 120 and condense discharging section 130, wherein, feeding preheating section 110 is mainly used in solid powdery
Raw material carry out feeding processing and pre-add heat treatment;Gasification section 120 is mainly used in the raw material after being heat-treated to pre-add
Further heating and gasifying is carried out, novel substance vapour is generated after chemical reaction directly to form raw material vapour or produce;It is solidifying
Knot discharging section 130 is mainly used in making the raw material vapour or the novel substance vapour cool down condensation formation condensation shape finished product
And to carry out discharging processing.Feeding preheating section 110, gasification section 120 and condense discharging section 130 and connect successively setting, and send
Expect preheating section 110, vaporization section 120 and condense the setting of the equal vacuum sealing of discharging section 130.
In the present embodiment, as shown in figure 1, feeding preheating section 110 includes the feeding preheating chamber 111 of tubular structure, feeding
The built-in screw type feed mechanism 112 of preheating chamber 111 and first heater 113.So, spiral feed mechanism is passed through
112 can carry out spiral feeding processing to the raw material of solid powdery, and can be to carrying out at feeding by first heater 113
The raw material of solid powdery in reason carry out pre-add heat treatment.The vaporizer 121 of gasification section 120 including tubular structure and built-in
Secondary heating mechanism 122 in vaporizer 121, the front end of vaporizer 121 is connected with the rear end of feeding preheating chamber 111.This
Sample one, is connected, it can be ensured that sealing between the two by the front end of vaporizer 121 with the rear end of feeding preheating chamber 111
Can, and the raw material after being heat-treated by secondary heating mechanism 122 to pre-add carry out further heating and gasifying, with direct
Form raw material vapour or produce and novel substance vapour is generated after chemical reaction.Specifically, first heater 113 and second
Heater 122 is induction heating apparatus, and the induction heating apparatus includes the be located on the inwall of feeding preheating chamber 111
One heating coil or the second heating coil being located on the inwall of vaporizer 121, with by the first heating coil in progress
The raw material of solid powdery in material processing carry out pre-add heat treatment, the institute after being heat-treated by the second heating coil to pre-add
State raw material and carry out further heating and gasifying, novel substance gas is generated after chemical reaction directly to form raw material vapour or produce
Compound.
As shown in figure 1, condensing discharging section 130 includes condensing chamber 131 and discharge chamber 132, the side side wall of condensing chamber 131 with
The rear end of vaporizer 121 is connected setting, to ensure sealing property between the two.The bottom of condensing chamber 131 passes through a funnel
Structure 133 carries out the setting that is connected with the top of discharge chamber 132, to ensure that the condensation shape finished product that condensing chamber 131 is scraped can be quick
While falling into discharge chamber 132, it is ensured that sealing property between the two.The bottom of discharge chamber 132 is provided with funneling discharging opening
134, in order to carry out quickly discharging.Specifically, condensing chamber 131 is cold barrel structure, and condensing chamber 131 is also built-in with rotor segment
135, for the condensation shape finished product on the inwall of condensing chamber 131 to be scraped automatically, to fall into discharge chamber by funnel structure 133
In 132.Rotor segment 135 is additionally provided with granulation mat surface 136, is carried out for the condensed on inner walls shape finished product to condensing chamber 131 thick
Roughening is handled.The side side wall of discharge chamber 132 is provided with vacuum orifice 137, for feeding preheating chamber 111, vaporizer 121, solidifying
Tie room 131 and discharge chamber 132 carries out vacuumize process, to ensure the feeding preheating section 110, vaporization section 120 and condense out
Expect that the equal vacuum sealing of section 130 is set.
In addition, the side side wall of discharge chamber 132 is additionally provided with gas atmosphere inlet (not shown), for feeding preheating chamber
What the 111st, vaporizer 121, condensing chamber 131 and discharge chamber 132 carried out protective gas is passed through processing.Discharge chamber 132 is built-in with spiral shell
Rotating discharging mechanism (not shown), can carry out spiral discharging processing to the product for falling into the condensation shape in discharge chamber 132.
By taking the production of silicon monoxide as an example, this continuous vacuum stove 100 is operated as follows, first, by solid
Powdered silicon is with silica feeding feeding preheating chamber 111, being allowed under the work of spiral feed mechanism 112, passing through
Feeding preheating chamber 111 is to enter in vaporizer 121, and concurrently, first heater 113 is in this continuous vacuum stove 100
Under wiring board control, pre-add heat treatment is carried out to the silicon and silica of the solid powdery by feeding preheating chamber 111.So
Afterwards, after the silicon of preheated solid powdery enters in vaporizer 121 with silica, secondary heating mechanism 122 is at this
Under the wiring board control of continuous vacuum stove 100, further heating and gasifying (temperature is up to more than 1000 degree) is carried out to it, makes it
Chemically react, generate the vapour of silicon monoxide, to enter in condensing chamber 131.Because condensing chamber 131 is cold barrel structure,
Its inwall can keep low-temperature condition under the wiring board control of this continuous vacuum stove 100, when the vapour of silicon monoxide runs into
The inwall of condensing chamber 131 under low-temperature condition condenses, and just can obtain the condensation shape finished product of silicon monoxide.Finally, in rotor segment
Under 135 work, the condensation shape finished product on the inwall of condensing chamber 131 is just scraped automatically, to fall into discharge chamber 132, then is passed through
Funneling discharging opening 134 carries out quickly discharging.
The continuous vacuum stove that the present invention is provided, it connects feeding preheating section, gasification section and condensation discharging section successively
Set, and the feeding preheating section, vaporization section and condense the equal vacuum sealing of discharging section and set, be allowed to by feeding, preheating, gasification,
Condense and discharging is connected, it is adaptable to which chemical reaction and regelation shape occur for solid high-temperature purifying, solid material gasification
The production processes such as Cheng Xin solid product, can be achieved the large-scale continuous production of the products such as the sub- silicon of oxidation, greatly save energy
Consumption.
Embodiments of the present invention are explained in detail above in association with accompanying drawing, but the invention is not restricted to described implementation
Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments
A variety of change, modification, replacement and modification are carried out, are still fallen within protection scope of the present invention.
Claims (10)
1. a kind of continuous vacuum stove, it is characterised in that the continuous vacuum stove includes:
Feeding preheating section, carries out feeding processing for the raw material to solid powdery and pre-add is heat-treated;
Gasification section, for being heat-treated to pre-add after the raw material carry out further heating and gasifying, directly to form raw material
Vapour produces generation novel substance vapour after chemical reaction;
Discharging section is condensed, formation condensation shape finished product is condensed for cooling down the raw material vapour or the novel substance vapour
And to carry out discharging processing;
The feeding preheating section, the gasification section and the condensation discharging section connect setting successively, and the feeding preheating section,
The vaporization section and the equal vacuum sealing of the condensation discharging section are set.
2. continuous vacuum stove according to claim 1, it is characterised in that the feeding preheating section includes tubular structure
Feeding preheating chamber, the feeding preheating chamber is built-in with spiral feed mechanism and first heater.
3. continuous vacuum stove according to claim 2, it is characterised in that the gasification section includes the gasification of tubular structure
Room and the secondary heating mechanism being built in the vaporizer, the front end of the vaporizer and the rear end phase of the feeding preheating chamber
Connection.
4. continuous vacuum stove according to claim 3, it is characterised in that the first heater and described second plus
Thermal is induction heating apparatus, and the induction heating apparatus includes first be located on the inwall of the feeding preheating chamber
Heating coil or the second heating coil being located on the inwall of the vaporizer.
5. continuous vacuum stove according to claim 4, it is characterised in that the condensation discharging section includes condensing chamber with going out
Expect room, the side side wall of the condensing chamber is connected setting with the rear end of the vaporizer, and the bottom of the condensing chamber passes through one
Funnel structure carries out the setting that is connected with the top of the discharge chamber, and the bottom of the discharge chamber is provided with funneling discharging opening.
6. continuous vacuum stove according to claim 5, it is characterised in that the condensing chamber is cold barrel structure, described solidifying
Knot room is also built-in with rotor segment, for the product of the condensed on inner walls shape of the condensing chamber to be scraped automatically, to pass through institute
Funnel structure is stated to fall into the discharge chamber.
7. continuous vacuum stove according to claim 5, it is characterised in that it is coarse that the rotor segment is additionally provided with granulation
Face, the product of the condensation shape on the inwall to the condensing chamber is roughened.
8. continuous vacuum stove according to claim 5, it is characterised in that the side side wall of the discharge chamber is true provided with taking out
Eat dishes without rice or wine, for carrying out vacuumize process to the feeding preheating chamber, the vaporizer, the condensing chamber and the discharge chamber.
9. continuous vacuum stove according to claim 5, it is characterised in that the side side wall of the discharge chamber is provided with protection
Gas access, for carrying out protective gas to the feeding preheating chamber, the vaporizer, the condensing chamber and the discharge chamber
Be passed through processing.
10. continuous vacuum stove according to claim 5, it is characterised in that the discharge chamber is built-in with spiral discharging
Mechanism.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710553635.8A CN107289788A (en) | 2017-07-08 | 2017-07-08 | Continuous vacuum stove |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710553635.8A CN107289788A (en) | 2017-07-08 | 2017-07-08 | Continuous vacuum stove |
Publications (1)
Publication Number | Publication Date |
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CN107289788A true CN107289788A (en) | 2017-10-24 |
Family
ID=60100966
Family Applications (1)
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CN201710553635.8A Pending CN107289788A (en) | 2017-07-08 | 2017-07-08 | Continuous vacuum stove |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109956478A (en) * | 2017-12-25 | 2019-07-02 | 新特能源股份有限公司 | The method that gaseous phase deposition stove and production aoxidize sub- silicon |
CN111793740A (en) * | 2020-07-01 | 2020-10-20 | 苏州东子云工业技术科技有限公司 | Pre-vacuumizing continuous roller furnace |
CN113587653A (en) * | 2021-07-29 | 2021-11-02 | 湖南金硅科技有限公司 | Vacuum furnace for scraping powder type continuous production of silicon monoxide and method for continuously producing silicon monoxide |
CN114394599A (en) * | 2022-01-18 | 2022-04-26 | 郑州炬煌新材料科技有限公司 | Preparation method of silicon monoxide and preparation device for realizing method |
CN114593598A (en) * | 2022-03-16 | 2022-06-07 | 安徽华铂再生资源科技有限公司 | High-efficiency fluidized bed furnace capable of preventing materials from being accumulated |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0841554A (en) * | 1994-07-29 | 1996-02-13 | Ogihara:Kk | Treatment of used battery |
JP2008088310A (en) * | 2006-10-03 | 2008-04-17 | Kenji Yamane | High temperature carbonization method and high temperature carbonization apparatus |
CN202973878U (en) * | 2012-11-29 | 2013-06-05 | 涂国坚 | Vacuum furnace for high temperature alloy material manufacturing device |
CN103925791A (en) * | 2014-04-16 | 2014-07-16 | 嵩县开拓者钼业有限公司 | Vacuum heating furnace |
CN207501702U (en) * | 2017-07-08 | 2018-06-15 | 深圳市汇美新科技有限公司 | Continuous vacuum stove |
-
2017
- 2017-07-08 CN CN201710553635.8A patent/CN107289788A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0841554A (en) * | 1994-07-29 | 1996-02-13 | Ogihara:Kk | Treatment of used battery |
JP2008088310A (en) * | 2006-10-03 | 2008-04-17 | Kenji Yamane | High temperature carbonization method and high temperature carbonization apparatus |
CN202973878U (en) * | 2012-11-29 | 2013-06-05 | 涂国坚 | Vacuum furnace for high temperature alloy material manufacturing device |
CN103925791A (en) * | 2014-04-16 | 2014-07-16 | 嵩县开拓者钼业有限公司 | Vacuum heating furnace |
CN207501702U (en) * | 2017-07-08 | 2018-06-15 | 深圳市汇美新科技有限公司 | Continuous vacuum stove |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109956478A (en) * | 2017-12-25 | 2019-07-02 | 新特能源股份有限公司 | The method that gaseous phase deposition stove and production aoxidize sub- silicon |
CN111793740A (en) * | 2020-07-01 | 2020-10-20 | 苏州东子云工业技术科技有限公司 | Pre-vacuumizing continuous roller furnace |
CN113587653A (en) * | 2021-07-29 | 2021-11-02 | 湖南金硅科技有限公司 | Vacuum furnace for scraping powder type continuous production of silicon monoxide and method for continuously producing silicon monoxide |
CN114394599A (en) * | 2022-01-18 | 2022-04-26 | 郑州炬煌新材料科技有限公司 | Preparation method of silicon monoxide and preparation device for realizing method |
CN114394599B (en) * | 2022-01-18 | 2024-07-02 | 郑州炬煌新材料科技有限公司 | Preparation method of silicon oxide |
CN114593598A (en) * | 2022-03-16 | 2022-06-07 | 安徽华铂再生资源科技有限公司 | High-efficiency fluidized bed furnace capable of preventing materials from being accumulated |
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Effective date of registration: 20220815 Address after: Room 101, No. 3, Xingyihui Industrial Park, Tianliao Community, Yutang Street, Guangming District, Shenzhen, Guangdong 518107 Applicant after: ADVANCED PRECISION TECHNOLOGY Co.,Ltd. Address before: Room A304, No. 2, Longgang Tianan Digital Innovation Park, No. 441, Huangge Road, Longcheng Street, Longgang District, Shenzhen, Guangdong 518000 Applicant before: SHENZHEN HUIMEI NEW TECHNOLOGY CO.,LTD. |