CN1981942B - Substrate coating method - Google Patents
Substrate coating method Download PDFInfo
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- CN1981942B CN1981942B CN2005101296297A CN200510129629A CN1981942B CN 1981942 B CN1981942 B CN 1981942B CN 2005101296297 A CN2005101296297 A CN 2005101296297A CN 200510129629 A CN200510129629 A CN 200510129629A CN 1981942 B CN1981942 B CN 1981942B
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- slip
- stream
- matrix material
- pressed
- container
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Abstract
A method for coating on a basic material which has multiple parallel flow channels with two open ends includes such steps as quantitatively filling the coating slurry in a container, pressing the basic material into the coating slurry, and turning over the container along with the basic material while blowing air through the flow channels on basic material to make the coating slurry to be diffused on the inner surface of each flow channel.
Description
Technical field
The present invention relates to make in a kind of many streams that on matrix material, form side by side slip to expand, cover the coating unit and the method for the matrix material of this stream inwall; The present invention be specially adapted on cellular stream inwall coated catalysts with slip, form catalyst, said cellular stream inwall is formed on the monolith as the catalyst matrix material of exhaust gas purification catalyst.
Background technology
As equably and coated catalysts is not with the method for slip lavishly on cellular stream inwall, known have slip that attraction measures in advance and the vacuum covering that applies, and said cellular stream forms on the monolith as the catalyst matrix material.
No. 2737837 communique of patent documentation 1 patent
This method is shown in Fig. 8 (a); After in slip container 51, supplying with the slip S of metering in advance; Open end as the cellular stream 53 of the monolith M of catalyst matrix material is contacted down and with above-mentioned liquid level 52; Open upper end portion side through from cellular stream 53 is carried out vacuum attraction, and S picks up with slip, and the slip of the amount of metering is flowed among each cellular stream 53... equably.
So, on monolith M, can not adhere to remaining slip, so removed the trouble of removal, recovery, recycle remainder from.
But,, have following problem under the situation of monolith upper end vacuum attraction slip; That is, shown in Fig. 8 (b), owing to compare with the cellular stream 53A of peripheral part; The slip S that the cellular stream 53B of middle body attracts is more; Therefore, even for example hope to apply the half the length of cellular stream 53, can not apply according to uniform coated length with slip S.
In addition; If control the influx of slip S with this through many cellular streams are controlled its vacuum respectively; Though then in theory can to the cellular stream of each bar attract same amount slip S, apply according to uniform length, this mechanism and control is too complicated, lack the possibility that realizes.
Summary of the invention
Therefore technical task of the present invention is in each the bar stream that on matrix material, forms side by side, to flow into the slip of metering in advance conscientiously and equably, realizes the raising of quality.
In order to solve this problem; The invention of technical scheme 1 is a kind of substrate coating method, and with the stream inwall of slip covering matrix material, this matrix material is formed with many streams side by side with the mode at the both ends of the surface opening; It is characterized in that; Have: hold and stay operation, hold to stay at this and in the slip container, hold the slip that stays aequum in operation, this slip container can be pressed into the end face that opening has the matrix material of above-mentioned stream; Be pressed into operation, this be pressed into make above-mentioned matrix material in the operation end face down, and this matrix material is pressed into the slip container, it is immersed in the slurry level; The expansion operation under the state that the slip container is together overturn together with matrix material, through with each bar stream ventilation orifice, expands slip in this expansion operation on the stream inwall.
Adopt substrate coating method of the present invention, in the container that holds the slip that leaves aequum, the matrix material end face that opening is had many streams and is pressed into this matrix material in the slip container down, and it is immersed in the slurry level.
At this moment because slip has certain viscosity, so the resistance that flows in the stream is very big, therefore, can be before flowing into each bar stream attached to the matrix material end face on, make slurry level level and smooth, if further be pressed into, then will flow in each bar stream.
If particularly matrix material is pressed into to the bottom of slip container, then can be filled to respectively in each bar stream holding all slips that stay in the slip container according to identical amount.
Next; Under the state that the slip container is together overturn together with matrix material; For example, if open the airport that forms on the slip container bottoms, the downward matrix material end side vacuum attraction through never being pressed into the slip container, from being pressed into the matrix material end side air supply that makes progress of slip container; Perhaps carry out above-mentioned two actions simultaneously; With each bar stream ventilation orifice, will flow into the slip of same amount with this in then all streams, it is expanded to each bar stream inwall equably.
Description of drawings
Fig. 1 is the process chart of an example of expression method of the present invention.
Fig. 2 is the key diagram of the slip container that uses among the present invention of expression.
Fig. 3 is the process chart of other painting methods of expression.
Fig. 4 is the key diagram of other slip containers of expression.
Fig. 5 is the process chart that the painting method of above-mentioned slip container is used in expression.
Fig. 6 is the key diagram that expression utilizes the example of the catalyst that method of the present invention makes.
Fig. 7 is the key diagram that expression utilizes the example of the catalyst that method of the present invention makes.
Fig. 8 representes the key diagram of technology in the past.
The specific embodiment
In this embodiment, adopting very simply, structure has realized making effectively in the cellular stream of slip each bar of inflow that measures in advance, the problem of raising qualification rate.
Fig. 1 is the process chart of an example of expression method of the present invention; Fig. 2 is the key diagram of the slip container that uses among the present invention of expression; Fig. 3 is the process chart of other painting methods of expression; Fig. 4 is the key diagram of other slip containers of expression, and Fig. 5 is the process chart that the painting method of other slip containers is used in expression, and Fig. 6 and Fig. 7 are the key diagrams that expression utilizes the example of the catalyst that the inventive method makes.
Substrate coating method shown in Figure 1 is the process chart of the following method of expression,, stays operation P through holding that is
1-be pressed into operation P
2-expansion operation P
3, utilize air pressure to make catalyst flow among many cellular stream 1... of the last formation of monolith (catalyst matrix material) M with slip S and expand, apply cellular stream inwall 1w, manufacturing automobile and other exhaust gas purification catalyst.
M is as shown in Figure 2 for this monolith, for example, forms the cylindrical of length about several cm～tens of cm, and axially connecting the sectional area that is formed on both ends of the surface 2 and 3 upper sheds along it simultaneously is 1mm
2About many cellular streams 1.
In addition, stay operation P holding
1In, shown in Fig. 1 (a), in slip container 4, hold the slip S that stays aequum.
And, the aequum that uses when measuring on the cellular stream 1... of each bar of monolith M the slip S that applies specific length in advance, and it is held stay in this slip container 4.
Next, be pressed into operation P
2In, shown in Fig. 1 (b),, and monolith M is pressed in the slip container 4 if make a end face 2 that opening has a cellular stream 1... down, this end face 2 is immersed in the slurry level, then the liquid level of slip S will be by to end face 2 extruding and smoothings.
And; If further monolith M is pressed into; Then slip S will lose the place of escape and be filled to respectively among each bar stream 1... according to identical amount; If monolith M is pressed into to the bottom of slip container 4, then shown in Fig. 1 (c), holding the slip S that stays in the slip container 4 will all be filled to respectively among each bar stream 1... according to identical amount.
At expansion operation P
3In, shown in Fig. 1 (d), with monolith M upset and with suction inlet 12 that vavuum pump 11 is connected on installation other end 3; Pull up the stopper 6 of the airport 7 on the bottom surface 4a that is formed at slip container 4; Air among each bar stream 1... of vacuum attraction, from slip side air supply, perhaps carry out above-mentioned two kinds of actions simultaneously, if with each bar stream ventilation orifice; Then shown in Fig. 1 (e), slip S will expand identical length equably on each bar stream inwall 1w.
At this moment; Shown in the expanded view of Fig. 1 (d); Because according to the rules spacing forms air guiding groove 5 in length and breadth on the 4a of the bottom surface of slip container 4; So the air of introducing from airport 7 is directed to all cellular streams 1 along the inboard of bottom surface 4a, cellular stream 1 can be in the bottom surface of slip container 4 4a blocked.
So, at expansion operation P
3After the end,, produce automobile exhaust gas purifying catalyst through carrying out with identical in the past drying or baking.
Fig. 3 representes other substrate coating methods of the present invention.And, the part mark identical symbol identical with Fig. 1, and omit detailed description to it.
This embodiment also is that a kind of process is held and stayed operation P
11-be pressed into operation P
12-expansion operation P
13Make the method for automobile and other exhaust gas purification catalyst, but this method is not pressed into monolith M to the bottom of slip container 4, but applies making under an end face 2 and the slurry level state of contact.
Stay operation P holding
11In, shown in Fig. 3 (a), hold the slip S that leaves ormal weight.
Next be pressed into operation P
12In, an end face 2 that makes cellular stream 1... opening is pressed into monolith M in the slip container 4, and its end face 2 is immersed in the slurry level down.
And, if monolith M is pressed in the slip container 4, then slip S will lose escape the place, flow among each bar stream 1..., at this moment, for any stream 1..., the degree of depth of slip S all is certain, so flow into respectively according to identical amount.
Monolith M is pressed into to the appropriate location of slip container 4, will shifts to expansion operation P
13
At expansion operation P
13In, after this container 4 is together overturn together with monolith M,, slip S is expanded on stream inwall 1w through with each bar stream 1... ventilation orifice.
At this moment, the other end 3 of down monolith M is installed on the suction inlet 12 that is connected with vavuum pump 11, if pull up the stopper 6 of slip container 4, then air will be imported in the slip container 4 through airport 7.
In addition because according to the rules spacing is formed with air guiding groove 5 in length and breadth on the 4a of the bottom surface of slip container 4, so the inboard of the air 4a along the bottom surface that imports from airport 7 extends to each corner, can be at an easy rate 4a goes up slip S is peeled off from the bottom surface.
In addition; Because residual slip S has certain height with respect to any stream 1... in the space of monolith M and slip container 4; So the time with its vacuum attraction; Slip S will flow into respectively among all stream 1... according to identical amount, and expansion equably on each bar stream inwall 1w, and coated length also equates.
So, at expansion operation P
13After the end,, make automobile exhaust gas purifying catalyst through carrying out with identical in the past drying or baking.
In addition; Slip according to design in advance applies profile, and is not hoping when specific stream (the for example cellular stream 1A... of middle body) is gone up coating slip S, as shown in Figure 4; With this specific cellular stream 1A... accordingly in the 4a of the bottom surface of slip container 4; Use is provided with the slip container 14 of seal 13, and the liquid level of said seal 13 when holding the slip S that leaves ormal weight is high, pressurized being contracted under this liquid level when being pressed into monolith M.
And, stay operation P holding
21In, shown in Fig. 5 (a), if hold the slip S that stays ormal weight, then the head of seal 13 will be in the state that exposes on liquid level.
Next, be pressed into operation P
22In, if monolith M is pressed in the slip container 4, then shown in Fig. 5 (b), the cellular stream 1A... of middle body will contact with seal 13, its peristome will be plugged.
And then; If seal 13 is compressed under the liquid level of slip S, then slip S will be crushed on the end face 2 before in each stream 1B... that is not clogged by seal 13, flowing into, and after with this liquid level smoothing; Lose the place of escape, flow into equably among the stream 1B....
Here, same as described above, shift to expansion operation P
23, shown in Fig. 5 (c), after with monolith M upset, shown in Fig. 5 (d), if with this stream 1B ventilation orifice, then slip S will expand on the stream 1B... of the circumference that is not stopped up by seal 13 equably.
Fig. 6 is the example of expression catalyst that the inventive method is combined to form.
For example, when the total length that spreads all over cellular stream 1... applied slip S, metering applied the slip S of the amount of total length, can join in the slip container 4 then, but the slip S that also can apply half length respectively from both ends of the surface 2 and 3 sides of monolith M.
That is, stay operation P through repeating above-mentioned holding
1, P
11-be pressed into operation
P2, P
12-expansion operation P
3, P
13From end face 2 sides monolith M is pressed into and holds the slip container 4 that leaves slip S; After the distolateral peristome from cellular stream 1 only applies the slip S of half length; From other end 3 sides monolith M is pressed into and holds the slip container 4 that leaves slip S, if only apply the slip S of half length from the other end side opening portion of cellular stream 1, the total length that then can spread all over cellular stream 1 applies slip S.
At this moment; Through holding the amount of staying in the increase and decrease container 4; Be not limited in shown in Fig. 6 (a) situation that applies congener slip S1 from both sides equably; Can also shown in Fig. 6 (b), make it overlapping, or shown in Fig. 6 (c), vacate the gap, also can be shown in Fig. 6 (d) ratio according to random length applies the different slip S of exhaust gas purification characteristic from both sides
1And S
2
And then, repeat to hold and stay operation P
1, P
11, P
21-be pressed into operation P
2, P
12, P
22-expansion operation P
3, P
13, P
23, shown in Fig. 7 (a), through being coated with slip S in the total length that spreads all over cellular stream 1...
1The end face 2 of monolith M stress the folded slip S that applies identical type
1, can partly change slip S
1Thickness, perhaps through 3 stressing folded different types of slip S of coating in the other end
2, also can make stepped construction.
In addition, use the slip container 14 of the seal 13 be provided with arbitrary shape, stay operation P through repeating to hold
21-be pressed into operation P
22-expansion operation P
23, the coating profile shown in Fig. 7 (b) also is possible.
Utilize diameter to be divided into cellular stream 1C of the side of the peripheral part of two-part monolith M, with slip S here,
1And S
2The ratio of length (for example each 1/2) applies according to the rules, and cellular stream 1D is with slip S
3And S
4The ratio of length (for example each 1/2) applies according to the rules, and cellular stream 1E is carrying out the slip S that bottom applies
5And S
6Both end sides, be coated with slip S respectively
5And S
7
As stated,, be not limited to above-mentioned embodiment, can make the catalyst of various coating profiles, so also have the effect that improves the design freedom that applies profile according to this embodiment.
In addition; Through matrix material being pressed in the slip container, can in each bar stream, distribute slip respectively according to identical amount effectively, so pass through with each bar stream ventilation orifice; Can make slip expansion equably on the inwall of each bar stream, have very excellent effect.
Utilize possibility on the industry
The present invention be specially adapted on cellular stream inwall coated catalysts with slip, form catalyst, said cellular stream inwall is formed on as on the monolith of the catalyst matrix material of automobile or other exhaust gas purification catalyst etc.
Claims (6)
1. substrate coating method covers the stream inwall of matrix material with slip, and this matrix material is formed with many streams side by side with the mode at the both ends of the surface opening, it is characterized in that having:
Hold and stay operation, hold to stay at this and in the slip container, hold the slip that stays aequum in operation, this slip container can be pressed into the end face of an opening of the matrix material with above-mentioned stream;
Be pressed into operation, this be pressed into make above-mentioned matrix material in the operation end face down, and this matrix material is pressed into the slip container, it is immersed in the slurry level;
The expansion operation under the state that the slip container is together overturn together with matrix material, through with each bar stream ventilation orifice, expands slip in this expansion operation on the stream inwall.
2. substrate coating method as claimed in claim 1 is characterized in that, in above-mentioned expansion operation, opens the airport that on container bottoms, forms, with each bar stream ventilation orifice.
3. substrate coating method as claimed in claim 1; It is characterized in that; Slip according to design in advance applies profile; Corresponding with the specific stream of not hoping to apply slip; Liquid level and the pressurization be higher than slip are set on the bottom surface of slip container in advance are contracted to subsurface seal, be pressed in the operation when in the slip container, being pressed into matrix material, it is immersed in the slurry level making its end face and above-mentioned seal contact, clog under the state of peristome of specific stream above-mentioned.
4. substrate coating method as claimed in claim 1 is characterized in that, stays operation-be pressed into operation-expansion operation through repeating above-mentioned holding, and the repeatedly overlapping coating of slip of the same race or not of the same race is formed.
5. substrate coating method as claimed in claim 1; It is characterized in that; Stay operation-be pressed into operation-expansion operation through repeating above-mentioned holding; From an end face side matrix material is pressed into and holds the slip container that leaves slip, and apply the slip of specific length, then from an end face side opening portion of stream; From the other end side matrix material is pressed into and holds the slip container that leaves the slip of the same race or not of the same race, apply the slip of specific length from the other end side opening portion of stream with above-mentioned slip.
6. substrate coating method as claimed in claim 1; It is characterized in that; Through using the catalyst matrix material that is formed with many streams side by side as above-mentioned matrix material; And use catalyst with slip as above-mentioned slip, coated catalysts is with slip, formation catalyst on the stream inwall of catalyst matrix material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101296297A CN1981942B (en) | 2005-12-14 | 2005-12-14 | Substrate coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101296297A CN1981942B (en) | 2005-12-14 | 2005-12-14 | Substrate coating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1981942A CN1981942A (en) | 2007-06-20 |
| CN1981942B true CN1981942B (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005101296297A Expired - Fee Related CN1981942B (en) | 2005-12-14 | 2005-12-14 | Substrate coating method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2983196A1 (en) * | 2015-04-21 | 2016-10-27 | Umicore Ag & Co. Kg | Method, device and apparatus for coating an inner surface of a substrate |
| JP6244421B1 (en) | 2016-07-27 | 2017-12-06 | 株式会社キャタラー | Exhaust gas purification catalyst manufacturing method and manufacturing apparatus |
| JP6746104B2 (en) * | 2018-04-13 | 2020-08-26 | 株式会社豊田中央研究所 | In-cell coating device and method for manufacturing reaction container using the same |
| CN110711682B (en) * | 2019-10-18 | 2023-10-03 | 浙江达峰汽车技术有限公司 | Gasoline engine particulate matter filters carrier catalyst coating device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2625273A (en) * | 1949-12-02 | 1953-01-13 | Arthur A Schuller | Invertible filter unit |
| US3873350A (en) * | 1973-02-20 | 1975-03-25 | Corning Glass Works | Method of coating honeycombed substrates |
| US4039482A (en) * | 1974-10-21 | 1977-08-02 | Universal Oil Products Company | Method of coating and impregnating catalyst support members |
| US4208454A (en) * | 1978-01-19 | 1980-06-17 | General Motors Corporation | Method for coating catalyst supports |
-
2005
- 2005-12-14 CN CN2005101296297A patent/CN1981942B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2625273A (en) * | 1949-12-02 | 1953-01-13 | Arthur A Schuller | Invertible filter unit |
| US3873350A (en) * | 1973-02-20 | 1975-03-25 | Corning Glass Works | Method of coating honeycombed substrates |
| US4039482A (en) * | 1974-10-21 | 1977-08-02 | Universal Oil Products Company | Method of coating and impregnating catalyst support members |
| US4208454A (en) * | 1978-01-19 | 1980-06-17 | General Motors Corporation | Method for coating catalyst supports |
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| Publication number | Publication date |
|---|---|
| CN1981942A (en) | 2007-06-20 |
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