CN2372470Y

CN2372470Y - Filter element for filter

Info

Publication number: CN2372470Y
Application number: CN 99213453
Authority: CN
Inventors: 孟起; 王聚才
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-18
Filing date: 1999-06-18
Publication date: 2000-04-05
Anticipated expiration: 2009-06-18

Abstract

The utility model relates to a filter element for a filter. A filter element cylinder is made of homogeneous open type cellular structure composite material, the inner and the outer layers are composed of a plurality of curved faces, and the curvature radius in the radial direction on the top end of the curved face of the inner layer is smaller than the curvature radius in the radial direction on the top end of the curved face of the outer layer. The shape of the outer layer of the cross section of the filter element cylinder is in a plum blossom petal shape which is formed by the combination of a half catenary and a half lemniscate. The utility model has the advantages of large filtering area and high filter efficiency and the resistance to the fluid is small.

Description

A kind of filter element

The utility model belongs to a kind of filter element, particularly relates to a kind of filter element with microcellular structure that adopts the composite material manufacturing.

Internal-combustion engine is the high-accuracy mechanical motion mechanism that thermochemistry can be transformed into mechanical energy, especially concerning heavy duty, not only needing provides clean fuel oil, air to it, and to guarantee that its amount of fuel and air quantity fully supply with, that is to say and to seek a kind ofly can guarantee higher filtering efficiency, make the filter cleaner inflow-rate of water turbine reduce required fluid resistance fully greatly and as much as possible again.Simultaneously, the lubricant oil for reducing the mechanical motion friction should guarantee the filtering precision height equally, makes fluid resistance low again.Notification number discloses the novel filter core of a kind of engine filter for the CN2310612 utility model patent, its filter body is to contain the hollow wavy cylinder shape that the plastics of microcellular structure are made, internal and external layer is formed by many curved surfaces, and the radial buckling radius of internal and external layer curved surface is identical.Some shortcoming that it has overcome the papery filter element has to a certain extent improved filtering efficiency, has certain resistance to compression, antivibration, wear-resisting, corrosion resistant ability.But because the radial buckling radius of its filter inside and outside layer is identical, so just limited the filtration Zhe number of filter body greatly, cause its filter area less, the resistance of filter body convection cell increases, not only limited its application area greatly, and cause the impurity in the short period inner fluid that filter core is blocked easily, thereby just significantly reduced its working life.Say that in some sense lower-powered motor uses its filter core still can reach using effect, but it is big to require height, inflow-rate of water turbine to require for filtering precision, fluid resistance requires low heavy duty, and this filter core has just lost use value.

The purpose of this utility model is to provide that a kind of filter area is big, the filter element that resistance is little, filter efficiency is high of convection cell.

For achieving the above object, the utility model is by the following technical solutions: a kind of filter element, the filter core cylinder adopts even open type microcellular structure composite material to make, and internal and external layer is formed by many curved surfaces, and the radial buckling radius on internal layer curved surface top is less than the radial buckling radius on outer curved surface top.

It is petal that the skin of filter core cylinder cross section is shaped as the plum that is combined to form with half catenary and half lemniscate.

The axial dimension of filter core is 10-1000mm, and radial dimension is 5-500mm, and wall thickness is 0.5-30mm.

Because the radial buckling radius on the utility model filter core cylinder internal layer curved surface top is less than the radial buckling radius on outer curved surface top, the filtration Zhe number of filter body and the width of the Zhe width of cloth just can increase greatly, filter area correspondingly also increases greatly, reduced the original resistance of convection cell, improved filter efficiency, prolonged its working life more.Under same boundary dimension condition, filter body Zhe number can increase about 30%, and has higher bending resistance structural characteristics.Zhe fabric width degree can increase more than 15%, can reach better that heavy duty filter cleaner filter efficiency height, fluid resistance are low, the requirement of long service life.The surface filtration area can increase 30-40%, and the fluid resistance in flow field is littler.After testing, original resistance＜80kpa, original filtering efficiency＞95%, high comprehensive performance.

Further specify the utility model below in conjunction with accompanying drawing and by embodiment:

Fig. 1 is the filter body section figure of prior art;

Fig. 2 is embodiment's a structural representation;

Fig. 3 is the cross sectional representation of Fig. 2;

Embodiment: filter core cylinder 1 is by having the superhigh molecular weight polyethylene material compression molding that evenly is distributed the hole structure that declines, its internal and external layer is formed by many curved surfaces, and the radial buckling radius on internal layer 2 curved surface tops is less than the radial buckling radius on outer 3 curved surface tops, utilized useful area between the internal and external layer to form maximum filtration flow field area to greatest extent.The skin of filter core cylinder cross section is shaped as with the plum of half catenary 4 and half lemniscate, 5 combination formings petal, has the characteristic that fluid displacement is big, the flow field resistance is little.Adopt the curve shape transition of half catenary and half lemniscate combination smooth, more help mould-forming, to guarantee the technological requirement of large-scale industrial production.

Present embodiment adopts computer CAD design, and shape is optimized more, can guarantee that heavy duty fuel oil, air-filtering precision reach international specified standard requirement.The axial dimension of filter core can be from 10mm to 1000mm, and radial dimension can be from 5mm to 500mm, and wall thickness can be from 0.5mm to 30mm.

Claims

1, a kind of filter element, filter core cylinder adopt even open type microcellular structure composite material to make, and internal and external layer is formed by many curved surfaces, it is characterized in that, the radial buckling radius on internal layer curved surface top is less than the radial buckling radius on outer curved surface top.

2, filter element as claimed in claim 1 is characterized in that, it is petal that the skin of filter core cylinder cross section is shaped as the plum that is combined to form with half catenary and half lemniscate.

3, filter element as claimed in claim 1 or 2 is characterized in that, the axial dimension of filter core is 10-1000mm, and radial dimension is 5-500mm, and wall thickness is 0.5-30mm.