CN100336575C - Metal filtering core and production thereof - Google Patents
Metal filtering core and production thereof Download PDFInfo
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- CN100336575C CN100336575C CNB2005100344429A CN200510034442A CN100336575C CN 100336575 C CN100336575 C CN 100336575C CN B2005100344429 A CNB2005100344429 A CN B2005100344429A CN 200510034442 A CN200510034442 A CN 200510034442A CN 100336575 C CN100336575 C CN 100336575C
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Abstract
The present invention relates to a metal filter element. The metal filter element comprises a filter element unit group which is folded, welded and pressed by multiple layers of porous metal sheet bands, and metal slivers which are encapsulated on two end surfaces in the vertical weld direction of the filter element unit group, wherein columnar supporting conduits which are mutually malposed are respectively extruded on the surfaces of the two adjacent layers of porous metal sheet bands, and a tail gas filtering passage is formed by space formed by the two adjacent columnar supporting conduits between the two adjacent porous metal sheet bands. Because the present invention adopts the structure that the filter element unit group is formed by folding, welding and pressing multiple layers of porous metal sheet bands with supporting conduits which are mutually malposed between partitions, on one hand, larger passage area which is equivalent to the passage area of a honeycombed ceramic substrate filter in limited space can be obtained by smaller volume offset, and meanwhile, the metal filter element has the specific performance of shock resistance and vibration resistance of metal; on the other hand, soot can be effectively intercepted for diesel vehicles with larger exhaust degree because of using high-sulfur diesel oil and primitive soot, and the soot can be regenerated through blowback.
Description
Technical field
The present invention relates to a kind of metal filtering core and manufacture method thereof of removing the black smoke particle, particularly relate to the diesel vehicle that adopts metal polyporous material to make and catch carbon soot particles metal filtering core and manufacture method thereof.
Background technology
Contain a large amount of soot particles in the diesel engine truck exhaust, these particulates mainly are made up of the carbonaceous material and the hydrocarbon soluble of black, and average grain diameter is little, are easy to be suspended in the atmosphere, very easily sucked and be deposited in the alveolar by people's respiratory tract, extremely harmful to health.In order to reduce particulate emission, known a kind of filter that constitutes by ceramic honeycomb matrix, filtration channel in the tail gas inflow filter to be clean of discharging, adjacency channel is alternately closed, make tail gas behind filter inlet end admission passage, penetrate ceramic wall, and the process adjacency channel is discharged at the filter outlet end again, its major defect is the anisotropy of physical parameter, being radially expanded coefficient is the twice of axial expansion coefficient, therefore thermal stress damage easily takes place, and opposing is simultaneously impacted, the poor-performing of vibration.In order to address these problems, people utilize good toughness of metallic filter material and impact resistance, made metal filtering core, the open No.Hei9-245938 of Japan Patent, disclosed traditional metallic filter among No.Hei11-257048 and the 2002-27915, be to be design concept with open filtration system, has the metal porous main body formation of wavy or convex-concave shape with what vortex form coiling was made along swirl direction, peak portion or paddy portion at wavy or convex-concave shape form many through holes, each through hole all has burr shape or the yoke shape projection that forms in its marginal portion, the state that burr shape or yoke shape projection are engaged with each other with metal porous main body is positioned within the metal porous main body surfaces opposite to each other and forms the tail gas path, enter in the tail gas path that unburned carbon contained smoke particle in the tail gas of turbulent condition is caught by the peak portion of metal porous main body or paddy portion surface and the burr shape or the yoke shape projection that further are used as obstacle caught, but because the passage sections area is less and the area that contacts with black smoke zone thus and the ratio of passage sections area can not improve, therefore cause many black smokes to spray with tail gas, and do not caught by metallic filter, can not be by the efficient of expecting that the black smoke particle is removed in realization.Japan Patent discloses 200410045256.2 and improves on the basis of the above, by increasing obstacle distributive law and the direction by through hole edge protuberance in the metal porous main body that changes wavy or convex-concave shape in the hope of obtaining higher passage sections area in the confined space, thereby make metallic filter can strengthen capture rate, but still can not realize the removal fully of soot, especially for using the bigger diesel vehicle of high sulfur diesel, original soot emissions degree, capture rate is still undesirable.
Summary of the invention
The objective of the invention is the existence at the problems referred to above, providing a kind of is to provide a kind of under the design concept to have bypass channel and obtain laminated metal filter core and manufacture method thereof than the MP major path area in the confined space with non-open filtration system.
The objective of the invention is to be achieved through the following technical solutions:
A kind of metal filtering core of the present invention is characterized in comprising:
It is rectangular to fold the metal that welds filter core cell population that compresses and the vertical weld direction both ends of the surface that are packaged in this filter core cell population by multi-layer porous metal sheet band, wherein the surface of adjacent two layers porous metals strip extrudes mutual dislocation respectively, can support the columnar stays conduit on the other side plane mutually, and the space that is formed by adjacent two columnar stays conduits between the adjacent two porous metals strips forms the tail gas filtering passage that can catch and remove the black smoke particle that is included in the diesel engine vent gas.
The manufacture method of a kind of metal filtering core of the present invention is characterized in may further comprise the steps:
The 1st the step, metal dust, binding agent and woven wire are made the porous metals strip by coating, sintering, rolling method;
The 2nd step, the porous metals strip is cut into one one required flake porous metal sheet band according to the requirement of the filter core overall dimensions to be processed and the area of passage;
The 3rd step, with flake porous metal sheet band along its length evenly subregion wherein the length of each subregion is identical in the length that filter core flows through with filter core entire length or air-flow, and extrude a vertical folding trace in the central authorities of the flake porous metal sheet band of adjacent two subregions, and it is on the flake porous metal sheet band of adjacent two subregions, be positioned at the cross-brace conduit that can support the other side plane mutually that the position that folds the trace both sides extrudes mutual dislocation respectively, and the flake porous metal sheet band of described each subregion is folding by certain angle along its folding trace;
The 4th step, will be through mold pressing and the flake porous metal sheet band of a plurality of subregions after folding by press welder it is welded to connect to form and has multiple filtration passage filter core cell population;
The 5th step, the both ends of the surface of the vertical weld direction of filter core cell population are encapsulated form the cuboid metal filtering core.
In wherein above-mentioned the 1st step metal dust, binding agent and woven wire are made the porous metals strip and may further comprise the steps by coating, sintering, rolling method:
The 1.1st goes on foot, uses the metal dust of granularity 0.5～200 μ m, presses the 500ml/Kg metal dust and adds water-soluble binder, is mixed into the metal dust slip;
The 1.2nd the step, above-mentioned metal dust slip evenly is coated on the woven wire coating thickness 0.5～1mm;
The 1.3rd step, with the woven wire that applies at 105 ℃ of oven dry 10min. down;
Woven wire sintering under vacuum or protection of reducing atmosphere after the 1.4th step, the oven dry, sintering temperature is lower than 20～400 ℃ of the fusing points of metal dust, sintering time 30～90min.;
Woven wire behind the 1.5th step, the rolling smooth sintering obtains described porous metals strip.
In above-mentioned the 5th step both ends of the surface of the vertical weld direction of filter core cell population are encapsulated and form the cuboid metal filtering core and may further comprise the steps:
The 5.1st step, the marginal portion between each subregion use metal rectangular successively at interval;
The 5.2nd step, the method that adopts industrial welding under impaction state effectively are connected with the filter core cell population metal is rectangular on two encapsulation end faces.
The present invention is owing to adopt multilayer to have the porous metals strip of support conduit of mutual dislocation between the subregion by folding, weld, compress the structure that forms the filter core cell population, making the present invention is to provide a kind of under the design concept to have bypass channel and obtain laminated metal filter core than the MP major path area in the confined space with non-open filtration system, remedy on the one hand and can obtain suitable with the ceramic honeycomb matrix filter area of passage bigger in the confined space, have the distinctive shock resistance of metal, vibration performance simultaneously with smaller volume; For using high sulfur diesel, diesel vehicle that original soot emissions degree is bigger can realize effective interception of soot, can be regenerated on the other hand, perhaps be got final product holomorphosis with the cleaning of general category metal cleaner by simple loading and unloading by blowback.
Description of drawings
Below in conjunction with detailed basic structure of the present invention of accompanying drawing and implementation method
Fig. 1 is that structure of the present invention is formed schematic diagram;
Fig. 2 is the structural representation of filter core cell population of the present invention;
Fig. 3 is a sectional structure schematic diagram of the present invention;
Fig. 4 is the structural representation of porous metals strip of the present invention.
The specific embodiment
As Fig. 1～shown in Figure 4, a kind of metal filtering core of the present invention comprises:
By the multi-layer porous metal sheet band 1 folding metal rectangular 2 that welds filter core cell population that compresses and the vertical weld direction both ends of the surface that are packaged in this filter core cell population, wherein the surface of adjacent two layers porous metals strip 1 extrudes mutual dislocation respectively, can support the columnar stays conduit 12 on the other side plane mutually, and the space that is formed by adjacent two columnar stays conduits 12 between the adjacent two porous metals strips 1 forms the tail gas filtering passage 11 that can catch and remove the black smoke particle that is included in the diesel engine vent gas.
The manufacture method of metal filtering core of the present invention may further comprise the steps:
The 1st the step, metal dust, binding agent and woven wire are made porous metals strip 1 by coating, sintering, rolling method; This moment, described porous metals strip can be metal fiber felt, metal flexible micropore strip, metal single layer or multi-layer silk screen etc.
The 2nd the step, according to the size of filter core integral body to be processed and the requirement of the area of passage porous metals strip is cut into one one required flake porous metal sheet band;
The 3rd step, with flake porous metal sheet band 1 along its length evenly subregion wherein the length of each subregion is identical in the length that filter core flows through with filter core entire length or air-flow, and extrude a vertical folding trace in the central authorities of the flake porous metal sheet band of adjacent two subregions, and it is on the flake porous metal sheet band 1 of adjacent two subregions, be positioned at the cross-brace conduit 12 that can support the other side plane mutually that the position that folds the trace both sides extrudes mutual dislocation respectively, and the flake porous metal sheet band 1 of described each subregion is folding by certain angle along its folding trace; Wherein each lateral channel two ends and porous metals strip planar section are answered smooth transition, and each subregion press folding direction and folded accordingly at the equity place after each conduit extrudes degree of depth.Simultaneously on each subregion between conduit the width of transition zone be subjected to the conduit restricted number, transition zone was smooth after the suggestion conduit extruded is advisable, the marginal zone width of each subregion is inequality, but with the marginal zone of adjacent sectors to identical on the angular direction, purpose is to make conduit district conduit mutual dislocation on the adjacent sectors of folding back, can support the other side plane mutually.In the adjacent sectors up and down two conduit district conduits to depress direction identical, for the tail gas path, the space between its adjacent subregion is as filtering the back current path.
The 4th step, will be through mold pressing and the flake porous metal sheet band 1 of a plurality of subregions after folding by press welder it is welded to connect and forms filter core cell population with multiple filtration passage;
The 5th step, the both ends of the surface of the vertical weld direction of filter core cell population are encapsulated form the cuboid metal filtering core.
In wherein above-mentioned the 1st step metal dust, binding agent and woven wire are made the porous metals strip and may further comprise the steps by coating, sintering, rolling method:
The 1.1st goes on foot, uses the metal dust of granularity 0.5～200 μ m, press the 500ml/Kg metal dust and add water-soluble binder, be mixed into the metal dust slip, wherein metal dust can be stainless steel, iron, nickel, titanium, copper or aluminium powder, and water-soluble binder can be CMC, polyvinyl alcohol or polyethylene glycol oxide;
The 1.2nd goes on foot, above-mentioned metal dust slip evenly is coated on the woven wire, coating thickness 0.5～1mm, and wherein woven wire can be stainless steel, iron, nickel, titanium, copper or aluminium wire netting;
The 1.3rd step, with the woven wire that applies at 105 ℃ of oven dry 10min. down;
Woven wire sintering under vacuum or protection of reducing atmosphere after the 1.4th step, the oven dry, sintering temperature is lower than 20～400 ℃ of the fusing points of metal dust, sintering time 30～90min.;
Woven wire behind the 1.5th step, the rolling smooth sintering obtains described porous metals strip 1.
In above-mentioned the 5th step both ends of the surface of the vertical weld direction of filter core cell population are encapsulated and form the cuboid metal filtering core and may further comprise the steps:
The 5.1st step, the marginal portion between each subregion use metal rectangular successively at interval, wherein a rectangular end and the folding back folding transition zone that forms of adjacent sectors of metal matches, the rectangular length suggestion of metal is not less than the length of folding back subregion, the rectangular width suggestion of metal is not more than the minimum widith of subregion marginal zone, forms the tail gas path with height and filter the back current path under the effect of compaction direction.Because the weldering property mutually of metal species, under impaction state, adopt the general industrial welding method effectively to be connected with filter assemblies metal is rectangular;
The 5.2nd goes on foot, adopts under impaction state the method for industrial welding on two encapsulation end faces metal rectangular 2 effectively to be connected with the filter core cell population.
The present invention simultaneously is as the part of whole metallic filter, encapsulating structure that it is last and step are can adopt common wrapping up such as the fire-retardent fiber felt-rug class in the encapsulation that enters the filter core direction with tail gas or filter vertical four lateral surfaces of filter core of back air flow stream outgoing direction, the connection class shell 4 that can adopt common metal species sheet material to make at last to have flange is connected with other assemblies, the three-dimensional hint effect of whole metal filtering core as shown in Figure 1, wherein lifting one's head of metal rectangular 2 blocks with baffle plate 21, finally forms filter space 3.
Claims (4)
1, a kind of metal filtering core is characterized in that comprising:
By the folding metal rectangular (2) that welds filter core cell population that compresses and the vertical weld direction both ends of the surface that are packaged in this filter core cell population of multi-layer porous metal sheet band (1), wherein the surface of adjacent two layers porous metals strip (1) extrudes mutual dislocation respectively, can support the columnar stays conduit (12) on the other side plane mutually, and the space that is formed by adjacent two columnar stays conduits (12) between the adjacent two porous metals strips (1) forms the tail gas filtering passage (11) that can catch and remove the black smoke particle that is included in the diesel engine vent gas.
2, a kind of manufacture method of metal filtering core is characterized in that may further comprise the steps:
The 1st the step, metal dust, binding agent and woven wire are made porous metals strip (1) by coating, sintering, rolling method;
The 2nd step, porous metals strip (1) is cut into one one required flake porous metal sheet band according to the requirement of the filter core overall dimensions to be processed and the area of passage;
The 3rd step, with flake porous metal sheet band (1) along its length evenly subregion wherein the length of each subregion is identical in the length that filter core flows through with filter core entire length or air-flow, and extrude a vertical folding trace in the central authorities of the flake porous metal sheet band of adjacent two subregions, and it is on the flake porous metal sheet bands of adjacent two subregions (1), be positioned at the cross-brace conduit (12) that can support the other side plane mutually that the position that folds the trace both sides extrudes mutual dislocation respectively, and the flake porous metal sheet band of described each subregion (1) is folding by certain angle along its folding trace;
The 4th step, will be through mold pressing and the flake porous metal sheet band of a plurality of subregions (1) after folding by press welder it is welded to connect and forms filter core cell population with multiple filtration passage;
The 5th step, the both ends of the surface of the vertical weld direction of filter core cell population are encapsulated form the cuboid metal filtering core.
3, the manufacture method of metal filtering core according to claim 2 is characterized in that in above-mentioned the 1st step metal dust, binding agent and woven wire being made porous metals strip (1) by coating, sintering, rolling method may further comprise the steps:
The 1.1st goes on foot, uses the metal dust of granularity 0.5～200 μ m, presses the 500ml/Kg metal dust and adds water-soluble binder, is mixed into the metal dust slip;
The 1.2nd the step, above-mentioned metal dust slip evenly is coated on the woven wire coating thickness 0.5～1mm;
The 1.3rd step, with the woven wire that applies at 105 ℃ of oven dry 10min. down;
Woven wire sintering under vacuum or protection of reducing atmosphere after the 1.4th step, the oven dry, sintering temperature is lower than 20～400 ℃ of the fusing points of metal dust, sintering time 30～90min.;
Woven wire behind the 1.5th step, the rolling smooth sintering obtains described porous metals strip (1).
4, the manufacture method of metal filtering core according to claim 2 is characterized in that in above-mentioned the 5th step that both ends of the surface with the vertical weld direction of filter core cell population encapsulate to form the cuboid metal filtering core and may further comprise the steps:
The 5.1st step, the marginal portion between each subregion are with metal rectangular (2) successively at interval;
The 5.2nd goes on foot, adopts under impaction state the method for industrial welding on two encapsulation end faces metal rectangular (2) effectively to be connected with the filter core cell population.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100344429A CN100336575C (en) | 2005-04-30 | 2005-04-30 | Metal filtering core and production thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100344429A CN100336575C (en) | 2005-04-30 | 2005-04-30 | Metal filtering core and production thereof |
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| Publication Number | Publication Date |
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| CN1712102A CN1712102A (en) | 2005-12-28 |
| CN100336575C true CN100336575C (en) | 2007-09-12 |
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| CNB2005100344429A Expired - Fee Related CN100336575C (en) | 2005-04-30 | 2005-04-30 | Metal filtering core and production thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104827032A (en) * | 2015-04-28 | 2015-08-12 | 成都易态科技有限公司 | Honeycomb-shaped metal filter core forming method and mold |
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| CN103372338A (en) * | 2012-04-24 | 2013-10-30 | 常州高度新能源科技有限公司 | Three-dimensional multi-layer valve opening containing filter element |
| CN105664611A (en) * | 2016-04-21 | 2016-06-15 | 北京高鑫伟业滤清器有限责任公司 | Filter |
| CN105664591B (en) * | 2016-04-21 | 2019-06-25 | 北京高鑫伟业滤清器有限责任公司 | Filtration members |
| CN105697105B (en) * | 2016-04-21 | 2020-07-17 | 北京高鑫伟业滤清器有限责任公司 | Filter disc |
| CN105771462A (en) * | 2016-04-21 | 2016-07-20 | 北京高鑫伟业滤清器有限责任公司 | Filter |
| CN115430834B (en) * | 2022-09-27 | 2024-05-10 | 山西奇色环保科技股份有限公司 | Method for preparing large-size sintered felt by folding method |
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| US4652286A (en) * | 1982-02-16 | 1987-03-24 | Matsushita Electric Industrial Co., Ltd. | Exhaust gas filter |
| US5300133A (en) * | 1992-01-17 | 1994-04-05 | Mercedes-Benz Ag | Soot particle exhaust-gas filter |
| CN1278454A (en) * | 2000-07-07 | 2001-01-03 | 清华大学 | Filter material and filter for reverse spray to regenerate carbon smoke filter |
| JP2003172122A (en) * | 2001-12-06 | 2003-06-20 | National Institute Of Advanced Industrial & Technology | Exhaust gas filter |
| CN2586819Y (en) * | 2002-10-26 | 2003-11-19 | 阮瑞平 | Black smoke particles filter for diesel engine |
| CN1573040A (en) * | 2003-06-05 | 2005-02-02 | 株式会社欧登 | Metal filter, black smoke minute particle removing apparatus having metal filter, and diesel engine automobile |
| CN1608772A (en) * | 2004-11-22 | 2005-04-27 | 广州有色金属研究院 | Prepn process of porous metal materrial |
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2005
- 2005-04-30 CN CNB2005100344429A patent/CN100336575C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4652286A (en) * | 1982-02-16 | 1987-03-24 | Matsushita Electric Industrial Co., Ltd. | Exhaust gas filter |
| US5300133A (en) * | 1992-01-17 | 1994-04-05 | Mercedes-Benz Ag | Soot particle exhaust-gas filter |
| CN1278454A (en) * | 2000-07-07 | 2001-01-03 | 清华大学 | Filter material and filter for reverse spray to regenerate carbon smoke filter |
| JP2003172122A (en) * | 2001-12-06 | 2003-06-20 | National Institute Of Advanced Industrial & Technology | Exhaust gas filter |
| CN2586819Y (en) * | 2002-10-26 | 2003-11-19 | 阮瑞平 | Black smoke particles filter for diesel engine |
| CN1573040A (en) * | 2003-06-05 | 2005-02-02 | 株式会社欧登 | Metal filter, black smoke minute particle removing apparatus having metal filter, and diesel engine automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104827032A (en) * | 2015-04-28 | 2015-08-12 | 成都易态科技有限公司 | Honeycomb-shaped metal filter core forming method and mold |
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| CN1712102A (en) | 2005-12-28 |
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