A new type of biomass fiber pm filter with guide vanes
A technology of biomass fibers and guide vanes, which is applied in the direction of machines/engines, noise reduction devices, engine components, etc., can solve the problems of small effective filtration surface area, complicated manufacturing process and heavy filter burden, and achieve long replacement cycle, Low cost and long service life
Inactive Publication Date: 2018-04-24
NORTHEAST FORESTRY UNIVERSITY +2
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Problems solved by technology
At present, the filter element structure used in common diesel vehicle PM filter devices is a solid cylinder, and the materials are mostly cordierite, honeycomb ceramics, and silicon carbide, which are relatively expensive and have complex manufacturing processes.
The structural characteristics of this filter body are: high strength, good heat resistance, and stable structure; the disadvantages are: high cost, small effective filtration surface area, heavy filter burden on the filter element, short filter element life and short replacement cycle
Method used
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Embodiment Construction
[0007] The metal mesh is made into a gear-shaped outer skeleton with double folds and a cylindrical inner skeleton. Cut wood, bamboo and other biomass materials into biomass fibers about 0.05-1mm thick, 0.5-5mm wide, and 20-50mm long, and heat-treat them, then mix the prepared biomass fibers with glass fibers, and add Stir the resin evenly, put it into the middle of the cylindrical inner and outer skeleton of the metal mesh, and dry it for preparation. The prepared filter element, the front and rear sealing covers and the front and rear end surfaces are glued together with heat-resistant glue, the front sealing cover is covered with guide vanes, and the upper end surfaces of the guide vanes are equipped with conical vane guide caps.
[0008] Place the filter body in the filter chamber so that the edge of the vane deflector cap is just nested on the inner wall of the filter chamber. On the premise that the filter body is coaxial with the filter cavity, the rear sealing cover o...
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The invention relates to a novel biomass fiber PM filter with guide blades, namely a PM filter with a pre-filter guide device and a gear-shaped biomass fiber filter element, which includes a filter chamber and a filter body; The chamber is composed of vane guide cap, guide vane and filter cavity; the filter body is composed of front and rear sealing covers, front and rear end covers, inner support, outer fixed net sleeve and gear-shaped biomass fiber filter element composed of several double pleats; The double pleat shape on the outer wall of the filter element of the device not only ensures the stability of the structure but also increases the effective filtering surface area; when the exhaust gas enters the filter element, it passes through the diversion device to reduce drag, and then distributes evenly on the effective filtering area of the filter element, improving the efficiency of the filter element. Filtration efficiency of the filter element; the clean gas filtered by the filter element flows out from the inner cavity of the filter element, and is discharged into the atmosphere from the exhaust port; the device has high filtration efficiency, good utilization rate of the filter element, long service life, low cost, green environmental protection, and can effectively Reduce particulate matter emissions from diesel vehicles.
Description
Technical field: [0001] The invention relates to the technical field of a diesel engine PM filter, in particular to a PM filter with a pre-filter guide device and a gear-shaped biomass fiber filter element. Background technique: [0002] The filter body is an important part of the diesel vehicle PM filter device, and its filtration efficiency and service life directly affect the development of diesel vehicles in my country and environmental protection issues. At present, the filter element structure used in common diesel vehicle PM filter devices is a solid cylinder, and the materials are mostly cordierite, honeycomb ceramics, and silicon carbide, which are relatively expensive and have complex manufacturing processes. The structural characteristics of this kind of filter body are: high strength, good heat resistance, and stable structure; the disadvantages are: high cost, small effective filtering surface area, heavy filtering burden of the filter element, short life of the...
Claims
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IPC IPC(8): F01N3/022
Inventor 郭秀荣梁中钰杜丹丰
Owner NORTHEAST FORESTRY UNIVERSITY