CN202146660U - Improved filter - Google Patents

Abstract

The utility model discloses an improved filter, belonging to an internal pressure type liquid filter using a filter element. The filter comprises a lead-in pipe and a cylindrical shell which are arranged coaxially. The filter element is arranged between the lead-in pipe and the cylindrical shell. The filter element comprises three symmetrical folded regions formed by folding a piece of annular filter paper end to end and surrounding the lead-in pipe. The cross sections of various folded regions are fan-shaped. Buffer channels are arranged between every two adjacent folded regions and between each folded region and the lead-in pipe. The fan-shaped bottom surfaces of various folded regions are concave to form grooves in the direction away from the lead-in pipe. Because the fan-shaped bottom surfaces of various folded regions are concave to form the grooves in the direction away from the lead-in pipe, the spaces of the buffer channels are increased; therefore, the filter effect is better; simultaneously, the filter element material is also saved; and the cost is reduced.

Description

A kind of improved filter

Technical field

The utility model relates to a kind of inner pressed filter, a kind of inner pressed liquid filter that uses filter core of more specifically saying so.

Background technology

In wire cutting machine room equipment, need to come filtered water or oil with filter earlier, this filter is under the pressure of water pump, to make to need filtered liquid to ooze out through the filter paper of filter core.Filter paper is processed by materials such as polyester fiber, synthetic fibers or wood pulp papers usually; Filter core is after filter paper is folded into the fold of given shape, is coated with the liquid that is prone to do with colloid again at the folding line place and fixes, and puts into filtration device structure then, also need guarantee the side week of filter core and the sealing at two ends usually.The effect of filtering depends on multiple factors such as shape and the filter area of filter core.Chinese patent CN200820212586.8 discloses a kind of filter, and is as shown in Figure 1, and the filter core of this filter is made up of three folded regions that are uniformly distributed with 1 that link to each other; Being shaped as of each folded region 1 is broad in the middle, and be small in ends, and its buffer channel 2 is " Y " type; That is each folded region 1 nearly ingress pipe 3 side linearly, though its filter area is bigger, buffer channel 2 spaces are less; Liquid is leached outside the filter core owing to the pressure effect after flowing into buffer channel 2 from ingress pipe 3 fast, and filter effect is affected.

Summary of the invention

The purpose of the utility model is to provide the big and filter effect of a kind of cushion space filter preferably.

For realizing above-mentioned purpose, the technical scheme that the utility model adopts is following:

A kind of improved filter; Comprise ingress pipe and cylindrical shell that concentric is provided with; Between said ingress pipe and cylindrical shell, be provided with filter core; Said filter core is three symmetric fold districts around said ingress pipe that end to end annular filter paper is folded to form, and the cross section of each folded region is fan-shaped; Leave buffer channel between the adjacent pleats district and between folded region and the ingress pipe, the fan-shaped bottom surface of each folded region is to the formation groove that caves in away from the ingress pipe direction.

Further, the filter paper linkage section of adjacent said folded region is near said cylindrical shell one side.

Further, said filter core is the filter core that single-part stationery or multi-ply paper are processed.

Further, be equipped with via hole on the wall of said ingress pipe and cylindrical shell.

Further, also comprise the end cap that is positioned at said ingress pipe and cylindrical shell two ends.

Beneficial effect of the present invention is: 1, filter core is three symmetric fold districts, leaves buffer channel, and not only filter area is big, and flow direction is even, makes to filter evenly; 2, the fan-shaped bottom surface of each folded region is to the formation groove that caves in away from the ingress pipe direction, and this structure has increased the space of buffer channel, makes filter effect better, has also saved material for core simultaneously, has reduced cost.

Description of drawings

Fig. 1 is the cross section structural representation of background technology patent middle filtrator;

Fig. 2 is the utility model filter cross section sketch map.

The specific embodiment

Below in conjunction with concrete embodiment the utility model is done further explanation:

With reference to figure 2, plant improved filter, comprise ingress pipe 6 and cylindrical shell 7 that concentric is provided with; Wall around this ingress pipe 6 is provided with some first via holes; And the wall of cylindrical shell 7 is provided with second via hole of net distribution, between said ingress pipe 6 and cylindrical shell 7, is provided with filter core, and this filter core is folded to form by filter paper 8; This filter paper 8 is single-part stationery or multi-ply paper; This filter core is shaped as around ingress pipe 6 and forms three symmetrical zigzag fold districts 4, and the cross section of each folded region 4 is fan-shaped, and the adjacent pleats district 4 continuous side seal annular core that form; The filter paper 8 of adjacent pleats district 4 linkage sections is near said cylindrical shell 7 one sides; And leave the space between the adjacent pleats district 4 and between folded region 4 and the ingress pipe 6; Form one or three fork-shaped buffer channels 5; Wherein the fan-shaped bottom surface of each folded region 4 makes the core of three fork-shaped buffer channels 5 form bigger cushion space to the formation groove that caves in away from ingress pipe 6 directions; Two ends at ingress pipe 6 and cylindrical shell 7 also are provided with end cap (not shown).Need filtered liquid from ingress pipe 6 first via hole inflow filters, behind filter element filtering, flow out by second via hole of cylindrical shell 7 again.

Certainly; Above embodiment just is explanation rather than restriction the utility model; The above only is the preferred embodiment of the utility model, so all equivalences of being done according to the described scheme of the utility model patent claim change or modify, includes in the utility model patent claim.

Claims (5)

1. improved filter; Comprise ingress pipe and cylindrical shell that concentric is provided with; Between said ingress pipe and cylindrical shell, be provided with filter core; It is characterized in that: said filter core is three symmetric fold districts around said ingress pipe that end to end annular filter paper is folded to form, and the cross section of each folded region is fan-shaped; Leave buffer channel between the adjacent pleats district and between folded region and the ingress pipe, the fan-shaped bottom surface of each folded region is to the formation groove that caves in away from the ingress pipe direction.

2. a kind of improved filter according to claim 1 is characterized in that: the filter paper linkage section of adjacent said folded region is near said cylindrical shell one side.

3. a kind of improved filter according to claim 1 is characterized in that: said filter core is the filter core that single-part stationery or multi-ply paper are processed.

4. a kind of improved filter according to claim 1 is characterized in that: be equipped with via hole on the wall of said ingress pipe and cylindrical shell.

5. a kind of improved filter according to claim 1 is characterized in that: also comprise the end cap that is positioned at said ingress pipe and cylindrical shell two ends.

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