CN110436759B - Atomizer and preparation method - Google Patents
Atomizer and preparation method Download PDFInfo
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- CN110436759B CN110436759B CN201910728091.3A CN201910728091A CN110436759B CN 110436759 B CN110436759 B CN 110436759B CN 201910728091 A CN201910728091 A CN 201910728091A CN 110436759 B CN110436759 B CN 110436759B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
- C03B19/025—Other methods of shaping glass by casting molten glass, e.g. injection moulding by injection moulding, e.g. extrusion
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/067—Macromolecular compounds
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The invention provides an atomizer and a preparation method thereof, wherein the atomizer comprises an atomizer body, the atomizer body is composed of a microporous ceramic body with a honeycomb shape on the surface and the inside, and a heating wire is arranged on the microporous ceramic body. The microporous ceramic body has a regular shape, and has honeycomb micropores formed by stacking particles on the surface and the inside. The invention also provides a preparation method of the atomizer, which is used for preparing the atomizer, compared with the prior art, the microporous ceramic body forming the atomizer has a stable structure, the microporous ceramic body has a regular shape, and the surface and the inside of the microporous ceramic body are provided with honeycomb micropores formed by stacking particles.
Description
Technical Field
The invention belongs to the technical field of inorganic materials, and particularly relates to an atomizer and a preparation method thereof.
Background
The atomizer atomizes the liquid. Atomizers are an important component of an atomization system, and their performance has a significant impact on the precision of the assay, chemical interference, etc. Therefore, the atomizer is required to be stable in spray, fine and uniform in mist droplets and high in atomization efficiency.
The existing atomizer basically consists of a heating wire, an atomizing chamber and air holes, and has poor atomizing effect.
Disclosure of Invention
Accordingly, the present invention is directed to an atomizer and a method for manufacturing the same.
The technical scheme adopted by the invention is as follows:
an atomizer, comprising
The atomizer body is composed of a microporous ceramic body with a honeycomb shape on the surface and the inside, and a heating wire is arranged on the microporous ceramic body.
Further, the microporous ceramic body has a regular shape, and has honeycomb micropores formed by stacking particles on the surface and inside.
Further, the honeycomb micropores are in a regular three-dimensional communication structure.
Further, the microporous ceramic body is an atomization area as a whole, or a groove is formed in the microporous ceramic body, and the groove forms the atomization area.
Further, the microporous glass body is made by the steps of: and (3) placing the inorganic glass microspheres with the size of 5-35 mu m into a sintering device for high-temperature sintering to form molten microspheres or semi-molten microspheres, injecting the molten microspheres or semi-molten microspheres and paraffin filler into a mould, stacking the molten microspheres or semi-molten microspheres and paraffin filler into a microporous glass body with a three-dimensional communication structure, and then melting paraffin through secondary sintering to form the glass body.
Further, the die comprises an upper die shell and a lower die shell, the upper die shell and the lower die shell are arranged between the upper die shell and the lower die shell, an upper die cavity and a lower die cavity are correspondingly arranged in the upper die shell and the lower die shell, the upper die cavity and the lower die cavity form an inner die, a first perforation and a second perforation are arranged at the middle part of the upper end of the upper die shell, the bottoms of the first perforation and the second perforation are communicated with a mixing hole, the mixing hole is arranged in the inner die, a third perforation is further arranged at the first perforation and the second perforation, the third perforation is communicated with an embedded pipe through a runner, and the embedded pipe is arranged in the inner die.
Further, through holes which are uniformly arranged are formed in the embedded pipe.
The invention also provides a preparation method of the atomizer, which comprises the following steps:
1) Placing inorganic glass microspheres with the diameter of 5-35 mu m into a sintering device for high-temperature firing to form molten microspheres or semi-molten microspheres;
2) Injecting the molten microsphere or the semi-molten microsphere obtained in the step 1) through a first perforation by an injection molding machine, simultaneously injecting paraffin filler through a second perforation and a third perforation, and controlling the flow ratio of the first perforation to the second perforation to be 0.8-1: 0.6 to 1.2, mixing and injecting molten microspheres or semi-molten microspheres and paraffin filler agent into a mould at a mixing hole, and stacking the molten microspheres or semi-molten microspheres and paraffin filler agent into a microporous glass body with a three-dimensional communication structure;
in the process of injecting paraffin filler into the third perforation, inert gas is introduced through a booster pump, so that the pre-buried pipe and the microporous glass body are always kept separated;
3) After the step 2), opening the die, separating the embedded pipe from the microporous glass body, taking out the microporous glass body, and melting paraffin wax through secondary sintering to form;
4) And (3) implanting a heating wire on the microporous glass body.
Further, in the step 3), after the embedded pipe is separated from the microporous glass body, an embedded hole is formed on the microporous glass body,
in the step 4), the heating wire is implanted in the pre-buried hole.
Further, in step 3), after molding, sintering is performed at 800-1000 ℃ for 5-15 min, and the filler is melted off to form a microporous glass body with pure particle accumulation.
Compared with the prior art, the microporous ceramic body forming the atomizer is formed by pressing inorganic ceramic microspheres through a die in a molten or semi-molten state, so that the structure is stable, the microporous ceramic body has a regular shape, and the surface and the inside of the microporous ceramic body are provided with honeycomb micropores formed by stacking particles.
Drawings
FIG. 1 is a schematic view of a nebulizer according to the invention;
fig. 2 is a schematic view of another structure of the atomizer according to the present invention.
FIG. 3 is a cross-sectional view of the invention at FIG. 1A or FIG. 2B;
FIG. 4 is a schematic view of a mold according to the present invention;
fig. 5 is a top view of a mold in accordance with the present invention.
The specific embodiment is as follows:
the invention provides an atomizer and a preparation method thereof, and the invention is specifically described below with reference to the accompanying drawings and examples.
Referring to FIGS. 1 to 3, the present invention provides an atomizer comprising
An atomizer body composed of a microporous ceramic body 1 having a honeycomb shape on the surface and the inside, and a heating wire 3 provided on the microporous ceramic body 1.
The microporous ceramic body 1 has a regular shape, the surface and the inside of the microporous ceramic body are provided with honeycomb micropores 4 formed by stacking particles, and the honeycomb micropores 4 have a regular three-dimensional communicated structure.
The microporous ceramic body 1 is an atomization area as a whole, or a groove is formed in the microporous ceramic body, and the groove forms an atomization area 3.
The microporous ceramic body is formed by injecting 5-35 mu m inorganic ceramic microspheres and a filler into a mould in a molten or semi-molten state, pressurizing, cooling and sintering.
The microporous ceramic body has a regular shape, and has honeycomb micropores formed by stacking particles on the surface and the inside.
The invention provides a preparation method of microporous ceramic body, which is characterized in that 5-35 mu m inorganic ceramic microspheres are put into a sintering device to be sintered at high temperature to form molten microspheres or semi-molten microspheres, the molten microspheres or semi-molten microspheres and paraffin filler are injected into a mould in a molten or semi-molten state, the particles are piled into microporous ceramic body with a three-dimensional communicated structure, paraffin is melted by secondary sintering, and the microporous ceramic body prepared by the method is pressed in a molten or semi-molten state, so that the microspheres form adhesion in the molten or semi-molten state in the pressing process, and the structure is stable.
Since paraffin or gum is used as a filler during injection, it has two effects, first: the microspheres are melted after being contacted with molten or semi-molten state, so that the purpose of cooling is achieved, and the second step: the paraffin or gum forms flowing fluid after melting, is filled between the microspheres, and is extruded in excess when being pressed, but a large amount of paraffin or gum is filled between the microspheres, so that the three-dimensional communication structure between the microspheres is ensured.
Among the above, the sintering device may be selected from, for example, the ones disclosed in patent publication nos.: an inorganic microsphere rapid sintering device of CN 103553304A.
During secondary sintering, a conventional sintering furnace can be selected.
Referring to fig. 4 and 5, in the present invention, the mold includes an upper mold shell 100 and a lower mold shell 103, an upper mold body 101 and a lower mold body 102 are disposed between the upper mold shell 100 and the lower mold shell 103, an upper mold cavity and a lower mold cavity are correspondingly disposed inside the upper mold body 101 and the lower mold body 102, the upper mold cavity and the lower mold cavity form an inner mold 110, a first perforation 105 and a second perforation 106 are disposed at a middle portion of an upper end of the upper mold shell, bottoms of the first perforation and the second perforation are communicated with a mixing hole 107, the mixing hole 107 is disposed in the inner mold 110, a third perforation 104 is further disposed at the first perforation and the second perforation, the third perforation 104 is communicated with an embedded pipe 108 through a runner, and the embedded pipe 108 is disposed in the inner mold 110.
The embedded pipe is provided with through holes which are uniformly arranged, and the embedded pipe is easy to form adhesion with the molten microsphere or the semi-molten microsphere when the molten microsphere or the semi-molten microsphere is injected into the injection molding machine, and paraffin filler is injected into the third perforation for preventing adhesion, and inert gas is introduced through the booster pump, so that the embedded pipe and the microporous glass body are always kept separated.
In order to facilitate demolding, a demolding mechanism 112 is correspondingly arranged on the lower mold shell 103 and the lower mold shell 102, the demolding mechanism is consistent with the conventional structure, cooling holes are also arranged on the outer side of the inner mold, and referring to fig. 4, in the upper mold shell 100, the cooling holes 113 are uniformly arranged.
The process of preparing the microporous ceramic body is further described below in connection with the examples.
Example 1, a method for preparing microporous ceramic body, comprising placing 5-35 μm inorganic ceramic microspheres in a sintering device, firing at high temperature to form molten microspheres or semi-molten microspheres, collecting the molten microspheres or semi-molten microspheres in a collecting area under vacuum condition, and mixing the molten microspheres or semi-molten microspheres with the powder of 0.8-1: injecting molten microsphere or semi-molten microsphere and filler into mould at a ratio of 0.6-1.2, pressurizing, cooling and forming, sintering at 800-1000 deg.C for 5-15 min after forming, and melting away filler to form microporous ceramic body with pure particles stacked.
Example 2 a method of preparing microporous ceramic body comprising placing 5-35 μm inorganic ceramic microspheres in a sintering apparatus and firing at high temperature to form molten or semi-molten microspheres, collecting the molten or semi-molten microspheres in a collection zone under inert gas conditions at a rate of 0.8-1: injecting molten microsphere or semi-molten microsphere and filler into mould at a ratio of 0.6-1.2, pressurizing, cooling and forming, sintering at 800-1000 deg.C for 5-15 min after forming, and melting away filler to form microporous ceramic body with pure particles stacked.
Example 3 a method of preparing a microporous ceramic body comprising placing 5-25 μm inorganic ceramic microspheres in a sintering apparatus and firing at high temperature to form fused or semi-fused microspheres, converging the fused or semi-fused microspheres in a collection zone under vacuum at a rate of 0.8-1: injecting molten microsphere or semi-molten microsphere and filler into mould at a ratio of 0.6-0.8, pressurizing, cooling and forming, sintering at 800-1000 deg.C for 5-15 min after forming, and melting away filler to form microporous ceramic body with pure particles stacked.
Example 4a method of preparing microporous ceramic body comprising placing 5-25 μm inorganic ceramic microspheres in a sintering apparatus and firing at high temperature to form molten or semi-molten microspheres, collecting the molten or semi-molten microspheres in a collection zone under inert gas conditions at a rate of 0.8-1: injecting molten microsphere or semi-molten microsphere and filler into mould at a ratio of 0.6-0.8, pressurizing, cooling and forming, sintering at 800-1000 deg.C for 5-15 min after forming, and melting away filler to form microporous ceramic body with pure particles stacked.
Example 5 a method for preparing microporous ceramic body comprising placing 5-15 μm inorganic ceramic microspheres in a sintering apparatus and firing at high temperature to form molten or semi-molten microspheres, converging the molten or semi-molten microspheres in a collection zone under vacuum conditions at a rate of 0.8: injecting molten microsphere or semi-molten microsphere and filler into mould at a ratio of 0.6, pressurizing, cooling and forming, sintering at 800-1000 deg.C for 5-15 min after forming, and melting away filler to form microporous ceramic body with pure particles stacked.
Example 6 a method of preparing microporous ceramic body comprising placing 5-15 μm inorganic ceramic microspheres in a sintering apparatus and firing at high temperature to form molten or semi-molten microspheres, collecting the molten or semi-molten microspheres in a collection zone under inert gas conditions at a rate of 0.8: injecting molten microsphere or semi-molten microsphere and filler into mould at a ratio of 0.6, pressurizing, cooling and forming, sintering at 800-1000 deg.C for 5-15 min after forming, and melting away filler to form microporous ceramic body with pure particles stacked.
Example 7 a method of preparing a microporous ceramic body comprising placing 5-15 μm inorganic ceramic microspheres in a sintering apparatus and firing at high temperature to form fused or semi-fused microspheres, converging the fused or semi-fused microspheres in a collection zone under vacuum conditions at a rate of 0.8: injecting molten microsphere or semi-molten microsphere and filler into mould at a ratio of 0.7, pressurizing, cooling and forming, sintering at 800-1000 deg.C for 5-15 min after forming, and melting away filler to form microporous ceramic body with pure particles stacked.
Example 8A method for preparing microporous ceramic body comprising firing 5-15 μm inorganic ceramic microspheres at high temperature in a sintering apparatus to form molten or semi-molten microspheres, collecting the molten or semi-molten microspheres in a collection zone under inert gas conditions at a rate of 0.8: injecting molten microsphere or semi-molten microsphere and filler into mould at a ratio of 0.7, pressurizing, cooling and forming, sintering at 800-1000 deg.C for 5-15 min after forming, and melting away filler to form microporous ceramic body with pure particles stacked.
Comparative example: when the microporous ceramic bodies formed in examples 1 to 8 were compared, it was found that when the particle diameter of the inorganic ceramic microspheres was larger than 25 μm, the microporous ceramic body obtained (e.g., molten microspheres or semi-molten microspheres: filler=0.8:1.2) exhibited the best performance when the filler was larger in the ratio between the molten microspheres or semi-molten microspheres and filler at the time of injection.
When the particle size of the inorganic ceramic microspheres is 15 to 25 μm, the microporous ceramic body obtained (e.g., molten microspheres or semi-molten microspheres: filler=1:1) has the best performance when the ratio of the molten microspheres or semi-molten microspheres to filler agent is close to that of the filler agent at the time of injection.
When the particle size of the inorganic ceramic microspheres is less than 15 μm, the microporous ceramic body obtained has the best performance when the ratio of the molten microspheres or semi-molten microspheres to the filler agent is smaller when the filler agent is injected (for example, the molten microspheres or semi-molten microspheres: filler agent=0.8:0.6).
In the above, the particle size of the inorganic ceramic microspheres is selected to be less than 15 μm when the atomizer is prepared. The performance of the resulting atomizer is best when the ratio of molten or semi-molten microspheres to filler agent is small when injected (e.g., molten or semi-molten microspheres: filler agent = 0.8: 0.6).
In the above, only a method of preparing a microporous ceramic body from inorganic ceramic microspheres is disclosed, but of course, various materials like an inorganic ceramic body can be prepared using an inorganic material such as glass, quartz, etc., which are mainly different in sintering temperature and secondary sintering temperature, but the above preparation method is still applicable in general.
The above-mentioned atomizer can also be produced using inorganic materials such as glass and quartz.
Claims (7)
1. An atomizer, comprising
An atomizer body composed of a microporous glass body having a honeycomb shape on the surface and the inside, and a heating wire provided on the microporous glass body;
the microporous glass body has a regular shape, and the surface and the inside of the microporous glass body are provided with honeycomb micropores formed by stacking particles;
the microporous glass body is wholly an atomization area, or a groove is formed in the microporous glass body, and the groove forms the atomization area;
the microporous glass body is prepared by the following steps: and (3) placing the inorganic glass microspheres with the size of 5-35 mu m into a sintering device for high-temperature sintering to form molten microspheres or semi-molten microspheres, injecting the molten microspheres or semi-molten microspheres and paraffin filler into a mould, stacking the molten microspheres or semi-molten microspheres and paraffin filler into a microporous glass body with a three-dimensional communication structure, and then melting paraffin through secondary sintering to form the glass body.
2. The nebulizer of claim 1, wherein the honeycomb micropores are in a regular three-dimensional communication structure.
3. The atomizer of claim 1 wherein said die comprises an upper die shell and a lower die shell, an upper die body and a lower die body disposed between said upper die shell and said lower die shell, an upper die cavity and a lower die cavity disposed within said upper die body and said lower die body, said upper die cavity and said lower die cavity forming an inner die, a first perforation and a second perforation disposed in a middle portion of an upper end of said upper die shell, said first perforation and said second perforation being in communication with a mixing hole disposed within said inner die, a third perforation disposed at said first perforation and said second perforation, said third perforation being in communication with an embedded tube via a runner, said embedded tube disposed within said inner die.
4. A nebulizer as claimed in claim 3, wherein the pre-buried pipe is provided with evenly arranged through holes.
5. A method of preparing an atomizer, comprising the steps of:
1) Placing inorganic glass microspheres with the diameter of 5-35 mu m into a sintering device for high-temperature firing to form molten microspheres or semi-molten microspheres;
2) Injecting the molten microsphere or the semi-molten microsphere obtained in the step 1) through a first perforation by an injection molding machine, simultaneously injecting paraffin filler through a second perforation and a third perforation, and controlling the flow ratio of the first perforation to the second perforation to be 0.8-1: 0.6 to 1.2, mixing and injecting molten microspheres or semi-molten microspheres and paraffin filler agent into a mould at a mixing hole, and stacking the molten microspheres or semi-molten microspheres and paraffin filler agent into a microporous glass body with a three-dimensional communication structure;
in the process of injecting paraffin filler into the third perforation, inert gas is introduced through a booster pump, so that the pre-buried pipe and the microporous glass body are always kept separated;
3) After the step 2), opening the die, separating the embedded pipe from the microporous glass body, taking out the microporous glass body, and melting paraffin wax through secondary sintering to form;
4) And (3) implanting a heating wire on the microporous glass body to form the atomizer.
6. The method of preparing an atomizer according to claim 5, wherein in the step 3), after the pre-buried pipe is separated from the microporous glass body, pre-buried holes are formed in the microporous glass body,
in the step 4), the heating wire is implanted in the pre-buried hole.
7. The method of preparing an atomizer according to claim 5, wherein in step 3), the filler is melted off after molding at 800 to 1000 ℃ for 5 to 15 minutes to form a microporous glass body with pure particles stacked.
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| CN115650761A (en) * | 2022-09-22 | 2023-01-31 | 东莞市仕易陶瓷科技有限公司 | Preparation method of microporous ceramic heating body and microporous ceramic heating body |
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| CN210945336U (en) * | 2019-08-08 | 2020-07-07 | 东莞市仕易陶瓷科技有限公司 | Atomizer |
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2019
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| JPH0196414A (en) * | 1987-10-05 | 1989-04-14 | Matsushita Electric Ind Co Ltd | Diesel exhaust gas purifier |
| WO2012056822A1 (en) * | 2010-10-26 | 2012-05-03 | 小松精練株式会社 | Sintered porous ceramic |
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