CN207769381U - Compound alumina ceramic filter - Google Patents
Compound alumina ceramic filter Download PDFInfo
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- CN207769381U CN207769381U CN201721595090.9U CN201721595090U CN207769381U CN 207769381 U CN207769381 U CN 207769381U CN 201721595090 U CN201721595090 U CN 201721595090U CN 207769381 U CN207769381 U CN 207769381U
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Abstract
The utility model is related to a kind of compound alumina ceramic filters, belong to ceramic filter technical field.The compound alumina ceramic filter of the utility model, including filter ontology, the filter ontology is equipped with a plurality of filter hole, centered on the central point of filter ontology, in addition to the filter hole closest to central point, the filter hole is circumferentially arranged successively from the inside to the outside from central point, and the filter hole is equidistantly arranged on each circumference, and the center of each filter hole is located on the circumference.By carrying out rational structure setting to filter, the flexural strength of filter is effectively improved, to increase its service life.
Description
Technical field
The utility model belongs to ceramic filter technical field, and in particular to a kind of compound alumina ceramic filter and its
Preparation method.
Background technology
Gel casting forming is the product after being combined traditional ceramic process with polymer organic, with traditional handicraft phase
Than molding blank strength is high, and biscuit density is big, and can be molded more complicated component.Therefore, gel injection molding and forming technology
Have great importance for producing high-performance ceramic product.
When preparing high-purity aluminum oxide ceramic material generally using gel injection molding and forming technology, basic technology is：It will
After organic monomer and crosslinking agent mixing soluble in water, initiator and catalyst is added, inorganic particle and dispersant are added, through ball
It is made certain density slurry after mill, then by casting is the ceramic component with certain size shape.And existing work
Skill still cannot achieve volume production because having the following disadvantages：First, the dispersibility and suspension stability of ceramic slurry are not easy to control, lead
It causes molding blank density uneven, is susceptible to cracking phenomena when in use；Second, the production cycle is long.Due to traditional work
Ceramic slurry Ball-milling Time in skill is long, and it is unstable to easily lead to reaction system, is difficult to control, and causes green body oxygen after molding
Porosity is excessively high and influences the intensity of green body；The flexural strength of third, traditional high-purity aluminum oxide ceramic material finished product is relatively low, limitation
Its application range.
Aluminium oxide ceramics filter is using high technology ceramics product made from gel injection molding and forming technology, because it is with corrosion resistant
The excellent performance such as erosion, high temperature resistant, high heat conduction is widely used in daily filtering, industrial filter and appliance field.Traditional oxygen
Change aluminium ceramic filter because its structure setting is unreasonable, and the intensity of filter caused to substantially reduce, and influence it is most significant just
Be on filter filter hole setting it is unreasonable, cause its use to have received very big limitation.
Therefore, the structure of existing gel injection molding and forming technology and aluminium oxide ceramics filter is improved, it has also become
This field technical problem urgently to be resolved hurrily.
Utility model content
Purpose of the utility model is to solve the deficiencies in the prior art, and provide a kind of compound alumina ceramic filtering
Piece compound alumina ceramic filter and preparation method thereof, the ceramic filter have excellent comprehensive performance, can be used for tea
The filtering of water tea foam, the filter element of chemical industry mixer, appliance circuit plug-in unit substrate etc..
The utility model adopts the following technical solution：
Compound alumina ceramic filter, including filter ontology, the filter ontology are equipped with a plurality of filter hole,
Centered on the central point of filter ontology, in addition to the filter hole closest to central point, the filter hole from central point by it is interior extremely
It is circumferentially arranged successively outside, the filter hole is equidistantly arranged on each circumference, and the center of each filter hole is located at
On the circumference.
Further, each filter hole closest to central point is in equilateral triangle is arranged.
Further, on the center and circumference adjacent thereto of the filter hole closest to central point and and central point
The distance between coaxial center of filter hole is equal to the distance between adjacent two circumference.
Further, between the center and the central point of filter ontology of the filter hole closest to central point away from
From for 0.86mm, mistake on the center and circumference adjacent thereto of the filter hole closest to central point and coaxial with central point
The distance between center of filter opening is 1.71mm.
Further, the filter ontology is circle, and thickness is 0.9mm, and the filter ontology is from central point
It is equipped with 9 groups of filter hole altogether from the inside to the outside, the number of each group filter hole is respectively：3,11,16,20,26,36,40,51,60, institute
State a diameter of 0.5-0.7mm of filter hole, a diameter of 28-33mm of the filter ontology.
The production method of the compound alumina ceramic filter of the utility model, includes the following steps：
Step 1：Dispersant, organic monomer are sequentially added in water, surfactant is added, is stirred evenly, is obtained basic
Liquid；
Step 2：It after alumina powder and yttrium oxide powder are mixed, is added into basal liquid obtained by step 1, adjusts pH
Afterwards, ball milling mixing is uniform, obtains A slurries；
Step 3：Crosslinking agent, initiator and defrother are added in A slurries obtained by step 1, continues ball milling, obtains B slurries；
Step 4：Catalyst is added in B slurries obtained by step 3, continues ball milling, is filtered to remove ball milling stone, obtains C slurries；
Step 5：C slurries are injected in mold, demoulds after solidification to be dried and is filtered to get the compound alumina ceramic
Piece biscuit body；
Step 6：Compound alumina ceramic filter biscuit body obtained by step 5 is subjected to glazing successively, is burnt into up to institute
State compound alumina ceramic filter.
Further, the mass ratio of dispersant described in step 1, organic monomer, water and surfactant be 0.1~
0.5：1:60~80：0.05~0.2.
Further, dispersant described in step 1 is poly amic acid PMAA-NH4, Sodium Polyacrylate P MAA-Na
Preparation method with the mixture of dispersant 5027, dispersant is：According to quality than poly amic acid PMAA-NH4：Polyacrylic acid
Sodium PMAA-Na：Dispersant 5027=3:3:2, be uniformly mixed to get；
Organic monomer described in step 1 is acrylamide, and the surfactant is castor oil polyoxyethylene ether；
In step 2 pH is adjusted with triethylamine；
Crosslinking agent described in step 3 is N, and N- methylene bisacrylamide acid amides, initiator is ammonium persulfate, the defrother
For organic silicon defoamer；
Catalyst described in step 4 is N, N, N ', N '-tetramethylethylenediamines.
Further, alumina powder described in step 2, yttrium oxide powder, step 1 gained basal liquid, step 3
Described in crosslinking agent, initiator described in step 3, catalyst described in defrother described in step 3 and step 4 quality
Than being 15~20:0.6~1:9.4~10:0.01~0.02:0.9~1:0.8~0.9:2~2.2, adjusting pH to 8.8~
9.0, according to material：Abrading-ball ratio is 1:3 ratio ball milling mixing is uniform.
Further, alumina powder described in step 2 be Alpha's type alumina powder, described in step 3 after
The time of continuous ball milling is 20min, continues the time of ball milling described in step 4 as 10min, C slurries are injected mold in step 5
In, vacuum solidifies 40-50min at 55-80 DEG C.
Compared with prior art, advantage is the utility model：
First：The utility model has by the way that surfactant castor oil polyoxyethylene ether is added in step 1 basal liquid
Effect improves the dispersibility of yttrium oxide powder and alumina powder in basal liquid, and the addition of yttrium oxide powder improves ceramics
The stability of slurry, makes alumina powder be not likely to produce agglomeration, ensure that the uniformity of blank density, to keep green body strong
Degree is improved, and extends the service life of filter；
Second：The pH of slurry, the attribute of slurry more easy to control, in step are adjusted in the utility model step 2 using triethylamine
De-bubble is carried out using a small amount of organic silicon defoamer in rapid three, the Ball-milling Time that can effectively shorten makes reaction so as to shorten the production cycle
System is more easy to control, ensure that the stability of reaction system system；
Third：The structure setting of the filter of the utility model is reasonable, by having equipped with a plurality of on filter ontology
The filter hole of aligned transfer, the filter hole are arranged in order with 3,11,16,20,26,36,40,51,60 number and are set from inside to outside
It sets, and each group filter hole is evenly distributed on the same circumference, and the distance between adjacent two circumference is 1.71mm, in
The distance between the center of the filter hole of heart point and the central point of filter ontology are 0.86mm, closest to the filter hole of central point
Center and circumference adjacent thereto on and the center of filter hole the distance between coaxial with central point be also configured as 1.71mm,
The diameter of filter hole is set as 0.5-0.7mm, and the diameter of the filter ontology is set as 28-33mm.It, can using above-mentioned setting
To effectively improve the flexural strength of filter, to increase its service life.
4th：Its Density Distribution of filter made from the utility model is uniform, and intensity is higher, easy to process to go out to meet the requirements
Ceramic component.
Description of the drawings
Fig. 1 is the front view of the utility model compound alumina ceramic filter；
Fig. 2 is the side view of the utility model compound alumina ceramic filter.
Wherein, 1, filter ontology；2, filter hole.
Specific implementation mode
The utility model is described in further detail with reference to embodiment.
It will be understood to those of skill in the art that the following example is merely to illustrate the utility model, and should not be regarded as limiting
The scope of the utility model.
The reagent used in the utility model is as follows：
а-Al2O3Powder, technical purity 95%, 1-2 μm of granularity；
Yttrium oxide powder, purity 99%, 0.5-2 μm of granularity；
Solvent is distilled water；
Dispersant is poly amic acid PMAA-NH4, Sodium Polyacrylate PMAA-Na and dispersant 5027 mixture,
In, poly amic acid PMAA-NH4It is chemistry pure 10% with Sodium Polyacrylate PMAA-Na
Organic monomer is acrylamide, analyzes pure, crystal；
Surfactant is castor oil polyoxyethylene ether, and No. CAS is 61791-12-6；
Crosslinking agent is N, N '-methylene bisacrylamide acid amides, analysis pure 99%；
Initiator is ammonium persulfate, analysis pure 10%；
Catalyst is N, N, N ', N '-tetramethylethylenediamines, liquid, analysis pure 5%；
Defrother is organic silicon defoamer, it is recommended to use the universal organic silicon defoamers of SXP.
Embodiment 1
As depicted in figs. 1 and 2, compound alumina ceramic filter, including filter ontology 1, on the filter ontology 1
It is described in addition to the filter hole 2 closest to central point centered on the central point of filter ontology 1 equipped with a plurality of filter hole 2
Filter hole 2 is circumferentially arranged successively from the inside to the outside from central point, and the filter hole 2 is equidistantly arranged in each circumference
On, and the center of each filter hole 2 is located on the circumference.2 row in equilateral triangle of each filter hole closest to central point
Row setting.It is described closest to filtering on the center and circumference adjacent thereto of the filter hole 2 of central point and coaxial with central point
The distance between the center in hole 2 is equal to the distance between adjacent two circumference.The center of the filter hole 2 closest to central point
The distance between central point of filter ontology 1 is 0.86mm, the center of the filter hole 2 closest to central point and therewith
The distance between center of filter hole 2 in adjacent circumferential and coaxial with central point is 1.71m m.The filter ontology 1
For circle, and thickness is 0.9mm, and the filter ontology 1 is equipped with 9 groups of filter hole, each group filtering altogether from the inside to the outside from central point
The number in hole is respectively：3,11,16,20,26,36,40,51,60, a diameter of 0.55mm of the filter hole 2, the filtering
A diameter of 28.5 mm of piece ontology 1.
The production method of the compound alumina ceramic filter of the utility model, includes the following steps：
Step 1：Dispersant, organic monomer acrylamide are sequentially added in water, it is poly- to add surfactant castor oil
Ethylene oxide ether, stirs evenly, and obtains basal liquid, the dispersant, organic monomer, water and surfactant mass ratio be 0.2:1:
70:0.1.The dispersant is poly amic acid PMAA-NH4, Sodium Polyacrylate PMAA-Na and dispersant 5027 mixture,
The preparation method of dispersant is：According to quality than poly amic acid PMAA-NH4：Sodium Polyacrylate PMAA-Na：Dispersant 5027
=3:3:2, be uniformly mixed to get.
Step 2：After 1000g Alpha's type alumina powders and 50g yttrium oxide powders are mixed, it is added to 4 70g steps
In one gained basal liquid, after adjusting pH to 8.8 with triethylamine, according to material：Abrading-ball ratio is 1:3 ratio ball milling mixing is uniform, obtains
A slurries；
Step 3：1g crosslinking agents N, N- methylene bisacrylamide acid amide, 50g initiator ammonium persulfates and 45g defrothers are had
Machine silicon defoaming agent is added in A slurries obtained by step 1, continues ball milling 20min, obtains B slurries；
Step 4：By 105g catalyst ns, N, N ', N '-tetramethylethylenediamines are added in B slurries obtained by step 3, continue ball
10min is ground, ball milling stone is filtered to remove, obtains C slurries；
Step 5：By C slurries inject mold in, at 80 DEG C vacuum solidify 40min, after solidification to be dried demould to get
The compound alumina ceramic filter biscuit body；
Step 6：Compound alumina ceramic filter biscuit body obtained by step 5 is subjected to glazing successively, is burnt into up to institute
State compound alumina ceramic filter.
Embodiment 2
As depicted in figs. 1 and 2, compound alumina ceramic filter, including filter ontology 1, on the filter ontology 1
It is described in addition to the filter hole 2 closest to central point centered on the central point of filter ontology 1 equipped with a plurality of filter hole 2
Filter hole 2 is circumferentially arranged successively from the inside to the outside from central point, and the filter hole 2 is equidistantly arranged in each circumference
On, and the center of each filter hole 2 is located on the circumference.2 row in equilateral triangle of each filter hole closest to central point
Row setting.It is described closest to filtering on the center and circumference adjacent thereto of the filter hole 2 of central point and coaxial with central point
The distance between the center in hole 2 is equal to the distance between adjacent two circumference.The center of the filter hole 2 closest to central point
The distance between central point of filter ontology 1 is 0.86mm, the center of the filter hole 2 closest to central point and therewith
The distance between center of filter hole 2 in adjacent circumferential and coaxial with central point is 1.71m m.The filter ontology 1
For circle, and thickness is 0.9mm, and the filter ontology 1 is equipped with 9 groups of filter hole, each group filtering altogether from the inside to the outside from central point
The number in hole is respectively：3,11,16,20,26,36,40,51,60, a diameter of 0.66mm of the filter hole 2, the filtering
A diameter of 30m m of piece ontology 1.
The production method of the compound alumina ceramic filter of the utility model, includes the following steps：
Step 1：Dispersant, organic monomer acrylamide are sequentially added in water, it is poly- to add surfactant castor oil
Ethylene oxide ether, stirs evenly, and obtains basal liquid, the dispersant, organic monomer, water and surfactant mass ratio be 0.3：1:
75：0.08；The dispersant is poly amic acid PMAA-NH4, Sodium Polyacrylate PMAA-Na and dispersant 5027 mixture,
The preparation method of dispersant is：According to quality than poly amic acid PMAA-NH4：Sodium Polyacrylate PMAA-Na：Dispersant 5027
=3:3:2, be uniformly mixed to get
Step 2：After 800g Alpha's type alumina powders and 40g yttrium oxide powders are mixed, it is added to 4 90g steps
In one gained basal liquid, after adjusting pH to 8.81 with triethylamine, according to material：Abrading-ball ratio is 1:3 ratio ball milling mixing is uniform,
Obtain A slurries；
Step 3：By 0.8g crosslinking agents N, N- methylene bisacrylamide acid amide, 47g initiator ammonium persulfates and 42 g defrothers
Organic silicon defoamer is added in A slurries obtained by step 1, continues ball milling 20min, obtains B slurries；
Step 4：By 107g catalyst ns, N, N ', N '-tetramethylethylenediamines are added in B slurries obtained by step 3, continue ball
10min is ground, ball milling stone is filtered to remove, obtains C slurries；
Step 5：By C slurries inject mold in, at 60 DEG C vacuum solidify 45min, after solidification to be dried demould to get
The compound alumina ceramic filter biscuit body；
Step 6：Compound alumina ceramic filter biscuit body obtained by step 5 is subjected to glazing successively, is burnt into up to institute
State compound alumina ceramic filter.
Embodiment 3
As depicted in figs. 1 and 2, compound alumina ceramic filter, including filter ontology 1, on the filter ontology 1
It is described in addition to the filter hole 2 closest to central point centered on the central point of filter ontology 1 equipped with a plurality of filter hole 2
Filter hole 2 is circumferentially arranged successively from the inside to the outside from central point, and the filter hole 2 is equidistantly arranged in each circumference
On, and the center of each filter hole 2 is located on the circumference.2 row in equilateral triangle of each filter hole closest to central point
Row setting.It is described closest to filtering on the center and circumference adjacent thereto of the filter hole 2 of central point and coaxial with central point
The distance between the center in hole 2 is equal to the distance between adjacent two circumference.The center of the filter hole 2 closest to central point
The distance between central point of filter ontology 1 is 0.86mm, the center of the filter hole 2 closest to central point and therewith
The distance between center of filter hole 2 in adjacent circumferential and coaxial with central point is 1.71m m.The filter ontology 1
For circle, and thickness is 0.9mm, and the filter ontology 1 is equipped with 9 groups of filter hole, each group filtering altogether from the inside to the outside from central point
The number in hole is respectively：3,11,16,20,26,36,40,51,60, a diameter of 0.5mm of the filter hole 2, the filter
A diameter of 28mm of ontology 1.
The production method of the compound alumina ceramic filter of the utility model, includes the following steps：
Step 1：Dispersant, organic monomer acrylamide are sequentially added in water, it is poly- to add surfactant castor oil
Ethylene oxide ether, stirs evenly, and obtains basal liquid, the dispersant, organic monomer, water and surfactant mass ratio be 0.1：1:
60：0.05.；The dispersant is poly amic acid PMAA-NH4, Sodium Polyacrylate PMAA-Na and dispersant 5027 mixing
The preparation method of object, dispersant is：According to quality than poly amic acid PMAA-NH4：Sodium Polyacrylate PMAA-Na：Dispersant
5027=3:3:2, be uniformly mixed to get
Step 2：After 900g Alpha's type alumina powders and 35g yttrium oxide powders are mixed, it is added to 4 80g steps
In one gained basal liquid, after adjusting pH to 8.98 with triethylamine, according to material：Abrading-ball ratio is 1:3 ratio ball milling mixing is uniform,
Obtain A slurries；
Step 3：By 0.9g crosslinking agents N, N- methylene bisacrylamide acid amide, 46g initiator ammonium persulfates and 43 g defrothers
Organic silicon defoamer is added in A slurries obtained by step 1, continues ball milling 20min, obtains B slurries；
Step 4：By 100g catalyst ns, N, N ', N '-tetramethylethylenediamines are added in B slurries obtained by step 3, continue ball
10min is ground, ball milling stone is filtered to remove, obtains C slurries；
Step 5：By C slurries inject mold in, at 75 DEG C vacuum solidify 48min, after solidification to be dried demould to get
The compound alumina ceramic filter biscuit body；
Step 6：Compound alumina ceramic filter biscuit body obtained by step 5 is subjected to glazing successively, is burnt into up to institute
State compound alumina ceramic filter.
Embodiment 4
As depicted in figs. 1 and 2, compound alumina ceramic filter, including filter ontology 1, on the filter ontology 1
It is described in addition to the filter hole 2 closest to central point centered on the central point of filter ontology 1 equipped with a plurality of filter hole 2
Filter hole 2 is circumferentially arranged successively from the inside to the outside from central point, and the filter hole 2 is equidistantly arranged in each circumference
On, and the center of each filter hole 2 is located on the circumference.2 row in equilateral triangle of each filter hole closest to central point
Row setting.It is described closest to filtering on the center and circumference adjacent thereto of the filter hole 2 of central point and coaxial with central point
The distance between the center in hole 2 is equal to the distance between adjacent two circumference.The center of the filter hole 2 closest to central point
The distance between central point of filter ontology 1 is 0.86mm, the center of the filter hole 2 closest to central point and therewith
The distance between center of filter hole 2 in adjacent circumferential and coaxial with central point is 1.71m m.The filter ontology 1
For circle, and thickness is 0.9mm, and the filter ontology 1 is equipped with 9 groups of filter hole, each group filtering altogether from the inside to the outside from central point
The number in hole is respectively：3,11,16,20,26,36,40,51,60, a diameter of 0.7mm of the filter hole 2, the filter
A diameter of 33mm of ontology 1.
The production method of the compound alumina ceramic filter of the utility model, includes the following steps：
Step 1：Dispersant, organic monomer acrylamide are sequentially added in water, it is poly- to add surfactant castor oil
Ethylene oxide ether, stirs evenly, and obtains basal liquid, the dispersant, organic monomer, water and surfactant mass ratio be 0.1~
0.5：1:60~80：0.05~0.2；The dispersant is poly amic acid PMA A-NH4, Sodium Polyacrylate PMAA-Na and point
The preparation method of the mixture of powder 5027, dispersant is：According to quality than poly amic acid PMAA-NH4：Sodium Polyacrylate
PMAA-Na：Dispersant 5027=3:3:2, be uniformly mixed to get
Step 2：After 750g Alpha's type alumina powders and 30g yttrium oxide powders are mixed, it is added to 4 70g steps
In one gained basal liquid, after adjusting pH to 9.0 with triethylamine, according to material：Abrading-ball ratio is 1:3 ratio ball milling mixing is uniform, obtains
A slurries；
Step 3：By 0.5g crosslinking agents N, N- methylene bisacrylamide acid amide, 45g initiator ammonium persulfates and 40 g defrothers
Organic silicon defoamer is added in A slurries obtained by step 1, continues ball milling 20min, obtains B slurries；
Step 4：By 110g catalyst ns, N, N ', N '-tetramethylethylenediamines are added in B slurries obtained by step 3, continue ball
10min is ground, ball milling stone is filtered to remove, obtains C slurries；
Step 5：By C slurries inject mold in, at 55 DEG C vacuum solidify 50min, after solidification to be dried demould to get
The compound alumina ceramic filter biscuit body；
Step 6：Compound alumina ceramic filter biscuit body obtained by step 5 is subjected to glazing successively, is burnt into up to institute
State compound alumina ceramic filter.
In the utility model slurry pH value is measured with pHJ-2 type acidometers；
The viscosity of slurry is measured with NDJ-2G type rotational viscometers, is averaged；
Water absorption rate, oxygen porosity and the bulk density of green body are surveyed with Archimedes method；
Measure the intensity DKZ-5000 type electric bending testing machines of biscuit and finished product.
Gained A slurries and biscuit body in embodiment 1 to 4 are tested, as a result see the table below 1：
The test data of 1 embodiment of table, 1 to 4 gained A slurries and biscuit body
By table 1 as it can be seen that the viscosity and granularity fluctuation range of ceramic slurry obtained by various embodiments of the utility model are smaller, volume
Score also substantially remains in 54-55%, when the pH of slurry is adjusted to 8.8~9.0, you can ensures the stability of reaction system.Cause
The stability of this utility model ceramic slurry is preferable, easily controllable, and dry body strength is higher made from each embodiment, and dry body is received
Shrinkage is smaller, essentially identical.
1 to 4 gained compound alumina ceramic filter of embodiment is tested, as a result see the table below 2：
The test data of 2 embodiment of table, 1 to 4 gained compound alumina ceramic filter
As seen from the above table, there is superior performance, water suction according to ceramic filter made from the utility model method
Rate is smaller, and oxygen porosity is relatively low, not only has higher bulk density and hardness, and flexural strength is also higher.It is widely used as
The heat-radiating substrate of filtering sheet for tea, chemical industry mixer filter and electric product.
It should be understood by those skilled in the art that the present utility model is not limited to the above embodiments, above-described embodiment and
Only illustrate the principles of the present invention described in specification, on the premise of not departing from the spirit and scope of the utility model,
The utility model also has various changes and improvements, these changes and improvements both fall within claimed the scope of the utility model
It is interior.The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (5)
1. compound alumina ceramic filter, including filter ontology（1）, the filter ontology（1）It is equipped with a plurality of mistakes
Filter opening（2）, which is characterized in that with filter ontology（1）Central point centered on, except closest to central point filter hole（2）Outside,
The filter hole（2）It is circumferentially arranged successively from the inside to the outside from central point, the filter hole（2）Equidistantly it is arranged in
On each circumference, and each filter hole（2）Center be located on the circumference.
2. compound alumina ceramic filter according to claim 1, which is characterized in that described closest to each of central point
Filter hole（2）It is in equilateral triangle to be arranged.
3. compound alumina ceramic filter according to claim 1, which is characterized in that the mistake closest to central point
Filter opening（2）Center and circumference adjacent thereto on and the filter hole coaxial with central point（2）The distance between center, be equal to
The distance between adjacent two circumference.
4. compound alumina ceramic filter according to claim 3, which is characterized in that the mistake closest to central point
Filter opening（2）Center and filter ontology（1）The distance between central point be 0.86mm, the filtering closest to central point
Hole（2）Center and circumference adjacent thereto on and the filter hole coaxial with central point（2）The distance between center be
1.71mm。
5. compound alumina ceramic filter according to claim 1, which is characterized in that the filter ontology（1）For
Circle, and thickness is 0.9mm, the filter ontology（1）It is equipped with 9 groups of filter hole, each group filtering altogether from the inside to the outside from central point
The number in hole is respectively：3,11,16,20,26,36,40,51,60, the filter hole（2）A diameter of 0.5-0.7mm, it is described
Filter ontology（1）A diameter of 28-33mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721595090.9U CN207769381U (en) | 2017-11-25 | 2017-11-25 | Compound alumina ceramic filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721595090.9U CN207769381U (en) | 2017-11-25 | 2017-11-25 | Compound alumina ceramic filter |
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| Publication Number | Publication Date |
|---|---|
| CN207769381U true CN207769381U (en) | 2018-08-28 |
Family
ID=63233830
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108096928A (en) * | 2017-11-25 | 2018-06-01 | 福建省德化县稀德利精密陶瓷有限公司 | Compound alumina ceramic filter and preparation method thereof |
-
2017
- 2017-11-25 CN CN201721595090.9U patent/CN207769381U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108096928A (en) * | 2017-11-25 | 2018-06-01 | 福建省德化县稀德利精密陶瓷有限公司 | Compound alumina ceramic filter and preparation method thereof |
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