CN2093687U

CN2093687U - New-type filter

Info

Publication number: CN2093687U
Application number: CN 91223112
Authority: CN
Inventors: 许琛
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-08-14
Filing date: 1991-08-14
Publication date: 1992-01-22

Abstract

The utility model relates to a new-type filter structure. Filter paper which originally only has one kind of identical folding specification is mainly converted into the filter paper having more than two different folding specifications, and a peak valley shape with different depth is formed. Filter paper with interphase peak valleys is formed by folding. A concave deflective surface which can cause folding layers to be mutually not easy to approached, squeezed and combined is arranged at each interseptal break angle. The side of the break angle forms a raised surface in the molded mode, the structural strength of the filter paper which is folded into a cylindrical shape is reinforced, and the utility model can obtain larger filter area and better circulation effect.

Description

New-type filter

The utility model relates to a kind of filter, it mainly is by changing the folded filter paper mode, also be about to filter paper and have only a kind of identical folding specification to change into to have two or more different folding specifications, and make the cylinder-shaped filter circumferential outer edge form the peak valley shape of the different depths from original.Strengthen structural strength and increase filter area and throughput.

Folded filter paper blade cylindraceous in the existing filter, the wedge angle of flanging has the effect of strengthening structural strength, but because have too many blade, so under a constant volume, on the contrary can be because of being close to the jammed filtering surface circulation that hinders mutually, in addition with regard to the filter paper knuckle, it is a wedge angle state, but its angle angle is very little, makes the air-flow can't be in filtering herein so be a high pressure district because of most advanced and sophisticated space is very little, and makes tip portion lose filtration.

In view of this, main purpose of the present utility model is to provide a kind of filter structure, and the filter throughput is improved, and long service life.Another purpose of the present utility model is to provide the filter paper structure of more knuckles and flanging, can prolong filter paper service time, reduces and changes number of times, more can increase structural strength.

Filter of the present utility model, the folded filter paper in it is the alternate shape of continuous peak valley, described filter paper forms the different peak valley shape of the depth.

Be folded into the filter paper of the alternate shape of peak valley, each every the knuckle place be provided with and can make tabs be difficult for each other the recessed inclined to one side face that closes near squeezing.

The side of described knuckle is formed with projecting surface with press moulding mode.

Further specify architectural feature of the present utility model and purpose below in conjunction with embodiment and accompanying drawing.

Fig. 1 is the expansion schematic diagram of filter paper of the present utility model;

Fig. 2 is the schematic perspective view of the utility model one embodiment;

Fig. 3 is the schematic perspective view of another embodiment of the utility model;

Fig. 4,5 is for the utility model and commonly use the product comparison diagram;

Fig. 6,7 is rolled into cross section comparison diagram after cylindric for the utility model and the product of commonly using;

Fig. 8,9 is the enforcement illustration of the utility model flanging.

Shown in Fig. 1,2,3, be respectively the schematic diagram that filter paper of the present utility model launches schematic diagram and two embodiment.Wherein tabs 1 has two kinds of width, and forms flanging with dark re-entrant angle 2 and the flanging with scrobicula angle 3, and the filter paper that has the different re-entrant angles of the depth thus can be rolled into cylindric shown in Fig. 2 and Fig. 3 embodiment.

Fig. 4, shown in Figure 5, be the utility model and the comparative descriptions figure that commonly uses product, wherein Fig. 4 is a filter paper structural representation of the present utility model, wide and the long tabs of its volume wide and long tabs of volume of commonly using product wide and shown in Figure 5 wide equating, be respectively W and A, among Fig. 4 four short tabs wide be B, four short tabs add that the volume of six long tabs equals the volume of eight long tabs of Fig. 5.And circulation spacing F is wide than circulation spacing E among Fig. 5 among Fig. 4, so the angle back-pressure starting point of circulation is in 3 places, tip of short flanging; And it is narrower and small and be recessed shape to commonly use the angle d of product and circulation spacing E, so the angle back-pressure starting point that circulates is in 2 places, tip of long flanging.Scrobicula angle a and re-entrant angle b, greater than the angle of commonly using product, therefore original circulating pressure is enough because the wide B of short tabs shortens half; And as the angle high pressure district of angle C three places are arranged among Fig. 4 and among Fig. 5 the angle high pressure district as angle d seven places are arranged, so it is relatively poor to commonly use the product filter effect, service life is shorter.

Fig. 6, Figure 7 shows that the utility model and the product of commonly using are rolled into comparative descriptions figure after cylindric, wherein Fig. 7 is rolled into sectional view cylindraceous for commonly using product filter paper, its central angle O, the wide A of long tabs, radius R, interior ring spacing P is identical with the utility model of Fig. 6, but the product of commonly using shown in Figure 7 through be rolled into cylindric after, outer ring diameter amplifies, loose and the wasting space of the flanging spacing that causes outer shroud, not as the utility model increases scrobicula angle 3 at outer shroud, can increase filter area, prolong the service time of filter paper.

Fig. 8,9 is the enforcement illustration of the utility model flanging state, wherein can promptly establish several recessed inclined to one side faces 6 on knuckle in filter every interval one summit 4 and a lowest point 5 as shown in Figure 8, and recessed by this inclined to one side face deformation can make tabs be difficult for each other lumping together near squeezing.Also can form projecting surface 7 as shown in Figure 9 with press moulding mode, close near squeezing mutually to prevent tabs at the knuckle lateral parts.

In sum, the utility model can make tubular filter paper structural strength strengthen by the different folding mode of the filter paper depth, and can obtain bigger filter area, can prolong the service life of filter paper widely.

Claims

1, a kind of filter, the folded filter paper in it is the alternate shape of continuous peak valley, it is characterized in that, described filter paper forms the different peak valley shape of the depth.

2, filter as claimed in claim 1 is characterized in that, is folded into the filter paper of the alternate shape of peak valley, each every the knuckle place be provided with and can make tabs be difficult for each other the recessed inclined to one side face that closes near squeezing.

3, filter as claimed in claim 1 is characterized in that, the side of knuckle is formed with projecting surface with press moulding mode.