CN108278142A - A kind of ceramic honey comb plug-hole structure - Google Patents
A kind of ceramic honey comb plug-hole structure Download PDFInfo
- Publication number
- CN108278142A CN108278142A CN201711447285.3A CN201711447285A CN108278142A CN 108278142 A CN108278142 A CN 108278142A CN 201711447285 A CN201711447285 A CN 201711447285A CN 108278142 A CN108278142 A CN 108278142A
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- China
- Prior art keywords
- grid
- honey comb
- ceramic honey
- face
- area
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
Abstract
The present invention relates to ceramic honeycomb filter fields, disclose a kind of ceramic honey comb plug-hole structure, including：Import ceramic honey comb face and outlet ceramic honey comb face, import ceramic honey comb face and outlet ceramic honey comb face include the second area grid of the first area grid and S ＞ 25% of S≤25% in skin edge, and whole first area grid are blocked in inlet face and/or exit face；Wherein, S is that the imperfect grid area of some grid accounts for the ratio of complete grid area.A kind of ceramic honey comb plug-hole structure provided by the invention, small imperfect grid is selectively blocked, meets emission request, and back pressure is small, thermal shock resistance is good, low manufacture cost, good filtration effect.
Description
Technical field
The present invention relates to ceramic honeycomb filter fields, more particularly to a kind of ceramic honey comb plug-hole structure.
Background technology
Ceramic honey comb wall-flow filter can remove the carbon black in gasoline engine and diesel engine vent gas.Traditional filter is set
Meter, it has inlet and outlet, and the porous wall that inlet and outlet are separated.Filter is divided into import by these walls being connected with each other
Channel and exit passageway.To capture carbon black and ash, the outlet end of intake channel is blocked, and the import of exit passageway is blocked.This
Chessboard of the structure that the interval of sample is blocked as chess.This design can force tail gas to pass through from porous wall so that
Grain object is deposited in channel or on wall.In general, inlet and outlet channel has the square section of same area.When amount of carbon blacks reaches one
Determine degree, regenerative process occurs, these carbon blacks of meeting burning-off.
In the production of ceramic honeycomb filter, cellular structure is completed by extrusion molding.In the process, it mutually interconnects
The wall connect forms ceramic honey comb structure with outmost wall (also known as skin).The grid that the wall largely interconnected is formed is logical
Road is complete square shape.But the grid that some walls are formed with skin is irregular structure, these grid are endless integral lattice
Son.For theoretically, these imperfect grid can be according to common checkerboard type plug-hole mode.But in fact, for by squeezing out
The imperfect grid that skin and the wall of connection are formed, it is very difficult to realize the plug-hole technique of high quality.Some problems are filters
Extrusion quality cause, some are to be caused by laser boring technique, etc..Therefore, it is necessary to artificial detection after plug-hole and manual envelopes
The stifled grid omitted.Because the requirement of granule number (PN) environmental protection, these problems must solve.
Imperfect grid number (N near skinp), it can be estimated by following formula：
Np=π Nd (1)
Wherein π is pi, NdIt is total number of the grid on diameter line.It can be seen that from this formula (1), imperfect grid
With prodigious quantity, so the considerations of cannot ignoring, in particular meet PN emission regulations and back pressure.
Although there is very common technique to block complete grid, it is not a simple thing to block imperfect grid.
For large-sized filter, after usual technique is cylindrical grinding, then skin material is put and (be skin-grafting technique).It is making skin graft
In the process, imperfect grid can automatically be filled by skin material.For the filter of small size, skin is in an extrusion process
It is formed, it is necessary to there is method to block these imperfect grid.
In the prior art to a kind of processing mode of imperfect grid：The closure of imperfect grid is and normal complete lattice
It is sub the same.In production, it is found that some grid be do not block or block it is wrong.These problems are caused there are many reason, some
It is because squeezing out quality, some are to be based on drilling technology.Therefore, it is necessary to spend more time to correct these imperfect grid closure and ask
Topic.
In the prior art to a kind of processing mode of imperfect grid：Imperfect grid is blocked by extruded material, just as
The wall of extrusion is the same.Such method can have high filtration effect to meet the emission request of particle weight (PM).But due to more
More materials is squeezed into this small region, and Research on Structural Modulus increases, and so as to cause being encountered in regeneration, thermal shock resistance is inadequate to ask
Topic.
In the prior art to a kind of processing mode of imperfect grid：All imperfect grid do not block.Although this
Scheme can meet some pervious emission requests, but to new emission request, such as numbers of particles (PN) requirement, this scheme can not
It takes.
So to have a kind of method blocking imperfect grid, and this method cannot discharge PN, back pressure and thermal stress cause
Negatively influencing.
Invention content
(1) technical problems to be solved
The object of the present invention is to provide a kind of ceramic honey comb plug-hole structure, solve in the prior art because to imperfect grid not
Emission request is not met caused by processing or excessively processing, back pressure increases and the problem of thermal shock resistance difference.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of ceramic honey comb plug-hole structures, which is characterized in that including：
Import ceramic honey comb face and outlet ceramic honey comb face, import ceramic honey comb face and the outlet ceramic honey comb face include being in
The first area grid of S≤25% of skin edge and the second area grid of S ＞ 25%, whole first area grid exist
Inlet face and/or exit face block；Wherein, S is that the imperfect grid area of some grid accounts for the ratio of complete grid area.
Wherein, the first area grid is the grid of S≤12.5%, and the second area grid is S ＞'s 12.5%
Grid.
Wherein, all the first area grid is blocked in inlet face, is open in exit face.
Wherein, all the first area grid is blocked in exit face, is open in inlet face.
Wherein, the inlet face of the second area grid and exit face are that interval blocks.
(3) advantageous effect
A kind of ceramic honey comb plug-hole structure provided by the invention, small imperfect grid is selectively blocked, and is met
Emission request, and back pressure is small, thermal shock resistance is good, low manufacture cost, good filtration effect.
Description of the drawings
Fig. 1 is the local structural graph in 1 import ceramic honey comb face of the embodiment of the present invention；
Fig. 2 is the local structural graph that the embodiment of the present invention 1 exports ceramic honey comb face；
Fig. 3 is the local structural graph in 2 import ceramic honey comb face of the embodiment of the present invention；
Fig. 4 is the local structural graph that the embodiment of the present invention 2 exports ceramic honey comb face；
Fig. 5 is the local structural graph in 3 import ceramic honey comb face of the embodiment of the present invention；
Fig. 6 is the local structural graph that the embodiment of the present invention 4 exports ceramic honey comb face；
In figure, 1, first area grid；2, second area grid.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As shown in figs 1 to 6, the present invention discloses a kind of ceramic honey comb plug-hole structure, including：Import ceramic honey comb face and go out
Mouth ceramic honey comb face, import ceramic honey comb face and outlet ceramic honey comb face include the firstth area of S≤25% in skin edge
The second area grid 2 of domain grid 1 and S ＞ 25%, whole first area grid 1 are blocked in inlet face and/or exit face；Its
In, S is that the imperfect grid area of some grid accounts for the ratio of complete grid area.
The present invention be directed to ceramic honeycomb filter, structure is the import and export channel structure interconnected by porous wall
At.Intake channel is blocked in outlet end, and exit passageway is blocked in input end.It utilizes such structure, tail gas can be forced
It flows into from intake channel, is flowed out by porous wall, then from exit passageway.Therefore, this plugging pattern (similar checkerboard type knot
Structure) it can be particulate collection in channel.The filter of the present invention has skin, this filter can be round, oval or other shapes
Shape, this filter are formed by expressing technique.In general, the material of this filter is ceramic material, such as cordierite, silicon carbide,
Aluminium titanates and mullite etc., but can also be other extrudable materials, such as glass, glass ceramics, plastics and metal.Generally
For, the porosity of filter of the present invention is between 20% to 70%.It is average to gasoline engine and diesel exhaust filtration device, stomata
Size is more likely between 5 to 50 microns between 10 to 30 microns.Ceramic honeycomb filter has 50 to 350 lattice per square inch
Son is more likely to 100 to 300 grid.Wall thickness can be more likely to 0.1 to 0.4 millimeter from 0.05 to 0.5 millimeter.
Specifically, S is the index for weighing imperfect grid.When S is close to 1, imperfect grid is similar to complete grid.It is false
If all imperfect grid are to be evenly distributed by S numerical value, then S is accounted for all imperfect equal to or less than 25% imperfect grid
The 25% of grid.It is crammed by common checkerboard type, the grid of half is not stifled.And from the present invention, these grid are crammed,
Generate extra closure grid.Assume again that these imperfect grid all have S values 25%, then all relative areas of these grid
(relative to the complete grid on diameter line) is：
25%* π * (25%/2)=9%
It is Conservative estimation above, all there is S to be equal to 25% because not being involved imperfect grid.Due on diameter line
Grid number be less than entire filter 5%, therefore, this design influence region be less than entire filter grid number 0.5%,
Or less than usual chessboard plug-hole mode not plug-hole grid 1%.Thus, if the grid that all S are equal to or less than 25% is crammed,
Influence to back pressure is very little.
Design is crammed for above, can be used for import or export end or both ends while cramming.When this method is used for both ends
When stifled simultaneously, the influence to back pressure is below 2%.
Preferably, first area grid 1 is the grid of S≤12.5%, and second area grid 2 is the grid of S ＞ 12.5%.
Wherein, whole first area grid 1 are blocked in inlet face, are open in exit face.
Wherein, whole first area grid 1 are blocked in exit face, are open in inlet face.
Wherein, the inlet face of second area grid 2 and exit face are that interval blocks.
Embodiment 1：
As depicted in figs. 1 and 2, by the input end of the first area grid 1 of all S≤25% block, outlet end not
It blocks.It is more than 25% second area grid 2 for S, is carried out by common checkerboard type and block compartment closure.Through testing and counting
It calculates, influence of the present embodiment to back pressure is less than 1%.
Embodiment 2：
As shown in Figure 3 and Figure 4, by the outlet end of the first area grid 1 of all S≤25% block, input end not
It blocks.It is more than 25% second area grid 2 for S, is carried out by common checkerboard type and block compartment closure.Through testing and counting
It calculates, influence of the present embodiment to back pressure is less than 1%.
Embodiment 3：
As shown in Figure 5 and Figure 6, the inlet end and an outlet end of the first area grid 1 of all S≤25% is blocked.
It is more than 25% second area grid 2 for S, is carried out by common checkerboard type and block compartment closure.Through testing and calculating, this
Influence of the embodiment to back pressure is less than 2%.
In addition, if expressing technique and laser boring processing quality are good, S values can be further decreased to 12.5% without accurate
The problem of spending, such as following example 4-embodiment 6.
Embodiment 4：
The present embodiment is substantially the same manner as Example 1, brief for description, during the description of the present embodiment, no longer
Technical characteristic same as Example 1 is described, only illustrates the present embodiment difference from Example 1：
The first area grid 1 of the present embodiment is the grid that S is less than or equal to 12.5%, and second area grid 2.Firstth area
The input end of domain grid 1 blocks, and is not blocked in outlet end.Second area grid 2 is carried out by common checkerboard type and blocks compartment
It blocks.
Embodiment 5：
The present embodiment is substantially the same manner as Example 2, brief for description, during the description of the present embodiment, no longer
Technical characteristic same as Example 2 is described, only illustrates the present embodiment difference from Example 2：
The first area grid 1 of the present embodiment is the grid that S is less than or equal to 12.5%, and second area grid 2.Firstth area
The outlet end of domain grid 1 blocks, and is not blocked in input end.Second area grid 2 is carried out by common checkerboard type and blocks compartment
It blocks.
Embodiment 6：
The present embodiment is substantially the same manner as Example 3, brief for description, during the description of the present embodiment, no longer
Technical characteristic same as Example 3 is described, only illustrates the present embodiment difference from Example 3：
The first area grid 1 of the present embodiment is the grid that S is less than or equal to 12.5%, and second area grid 2.Firstth area
The inlet end and an outlet end of domain grid 1 blocks.Second area grid 2 is carried out by common checkerboard type and blocks compartment closure.
Through testing and calculating, influence of the present embodiment to back pressure is less than 1%.
A kind of ceramic honey comb plug-hole structure provided by the invention, small imperfect grid is selectively blocked, and is met
Emission request, and back pressure is small, thermal shock resistance is good, low manufacture cost, good filtration effect.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (5)
1. a kind of ceramic honey comb plug-hole structure, which is characterized in that including：Import ceramic honey comb face and outlet ceramic honey comb face, institute
State import ceramic honey comb face and the outlet ceramic honey comb face include S≤25% in skin edge first area grid
(1) it is blocked in inlet face and/or exit face with the second area grid of S ＞ 25% (2), whole first area grid (1)；
Wherein, S is that the imperfect grid area of some grid accounts for the ratio of complete grid area.
2. ceramic honey comb plug-hole structure as described in claim 1, which is characterized in that the first area grid (1) be S≤
12.5% grid, the second area grid (2) are the grid of S ＞ 12.5%.
3. ceramic honey comb plug-hole structure as claimed in claim 1 or 2, which is characterized in that all first area grid (1)
It blocks in inlet face, is open in exit face.
4. ceramic honey comb plug-hole structure as claimed in claim 1 or 2, which is characterized in that all first area grid (1)
It blocks in exit face, is open in inlet face.
5. ceramic honey comb plug-hole structure as described in claim 1, which is characterized in that the import of the second area grid (2)
Face and exit face are that interval blocks.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711447285.3A CN108278142A (en) | 2017-12-27 | 2017-12-27 | A kind of ceramic honey comb plug-hole structure |
| CN201811375072.9A CN109356688A (en) | 2017-12-27 | 2018-11-19 | A kind of ceramic honey comb plug-hole structure |
| PCT/CN2018/116704 WO2019128561A1 (en) | 2017-12-27 | 2018-11-21 | Honeycomb ceramic hole-plugging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711447285.3A CN108278142A (en) | 2017-12-27 | 2017-12-27 | A kind of ceramic honey comb plug-hole structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108278142A true CN108278142A (en) | 2018-07-13 |
Family
ID=62802466
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711447285.3A Pending CN108278142A (en) | 2017-12-27 | 2017-12-27 | A kind of ceramic honey comb plug-hole structure |
| CN201811375072.9A Pending CN109356688A (en) | 2017-12-27 | 2018-11-19 | A kind of ceramic honey comb plug-hole structure |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811375072.9A Pending CN109356688A (en) | 2017-12-27 | 2018-11-19 | A kind of ceramic honey comb plug-hole structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN108278142A (en) |
| WO (1) | WO2019128561A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128561A1 (en) * | 2017-12-27 | 2019-07-04 | 山东国瓷功能材料股份有限公司 | Honeycomb ceramic hole-plugging structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112778018B (en) * | 2020-07-07 | 2022-09-09 | 山东浦创流体技术有限公司 | Novel method for blocking hole by square brick |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3768550B2 (en) * | 1994-03-11 | 2006-04-19 | 日本碍子株式会社 | Ceramic honeycomb structure |
| JP2003260322A (en) * | 2002-03-08 | 2003-09-16 | Ngk Insulators Ltd | Honeycomb structure, method for manufacturing the same, and system for cleaning waste gas |
| US7247184B2 (en) * | 2003-09-25 | 2007-07-24 | Corning Incorporated | Asymmetric honeycomb wall-flow filter having improved structural strength |
| KR20060117321A (en) * | 2003-11-06 | 2006-11-16 | 히타치 긴조쿠 가부시키가이샤 | Ceramic honeycomb filter, exhaust gas-purifying device, and exhaust gas-purifying method |
| EP1946840B1 (en) * | 2005-11-04 | 2019-08-21 | NGK Insulators, Ltd. | Honeycomb structure and honeycomb catalyst |
| US7485170B2 (en) * | 2005-11-30 | 2009-02-03 | Corning Incorporated | Narrow pore size distribution cordierite ceramic honeycomb articles and methods for manufacturing same |
| WO2009141892A1 (en) * | 2008-05-20 | 2009-11-26 | イビデン株式会社 | Honeycomb structure |
| JP2010024072A (en) * | 2008-07-16 | 2010-02-04 | Tokyo Yogyo Co Ltd | Honeycomb assembly |
| FR2969696B1 (en) * | 2010-12-23 | 2013-01-04 | Saint Gobain Ct Recherches | PARTICLE FILTER ASSEMBLY TYPE |
| JP2013212493A (en) * | 2012-03-30 | 2013-10-17 | Ngk Insulators Ltd | Honeycomb structure |
| MX2017001123A (en) * | 2014-07-25 | 2017-10-04 | Corning Inc | Defect tolerant honeycomb structures. |
| JP7029221B2 (en) * | 2016-02-17 | 2022-03-03 | 日本碍子株式会社 | Sealed honeycomb structure and method for manufacturing the sealed honeycomb structure |
| CN108278142A (en) * | 2017-12-27 | 2018-07-13 | 山东国瓷功能材料股份有限公司 | A kind of ceramic honey comb plug-hole structure |
-
2017
- 2017-12-27 CN CN201711447285.3A patent/CN108278142A/en active Pending
-
2018
- 2018-11-19 CN CN201811375072.9A patent/CN109356688A/en active Pending
- 2018-11-21 WO PCT/CN2018/116704 patent/WO2019128561A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128561A1 (en) * | 2017-12-27 | 2019-07-04 | 山东国瓷功能材料股份有限公司 | Honeycomb ceramic hole-plugging structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109356688A (en) | 2019-02-19 |
| WO2019128561A1 (en) | 2019-07-04 |
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