CN201361480Y

CN201361480Y - Folding filter element

Info

Publication number: CN201361480Y
Application number: CNU2009201145750U
Authority: CN
Inventors: 张应民; 卢红星
Original assignee: HANGZHOU FEIR FILTER TECHNOLOGY Co Ltd
Current assignee: HANGZHOU FEIR FILTER TECHNOLOGY Co Ltd
Priority date: 2009-03-02
Filing date: 2009-03-02
Publication date: 2009-12-16
Anticipated expiration: 2019-03-02

Abstract

The utility model discloses a folding filter element comprising an internal central tube, an external shell, an upper sealing end plate, a lower sealing end plate and a filter membrane clamped in the middle, wherein the central tube and the shell are cylinders densely distributed with pores; the upper sealing end plate and lower sealing end plate are welded together with the shell and the central tube; and the center of the lower sealing end plate is provided with the pore and communicated with the central tube. The filter membrane is formed by adopting a culmination-trough folding mode, namely taking a trough-peak-culmination-peak form to circularly fold, and then wound on the central tube, wherein the inner side thereof is a trough, the outer side thereof is a peak, and the middle of the two is a culmination. When in working, filtering liquid flows through the shell, the filter membrane and the central tube sequentially, and then flows out from the lower end to accomplish the whole filtering process. The folding filter element has high utilization ratio of the filter element space, large filtering surface area and fast filtering flow rate.

Description

A kind of foldable filter element

Technical field

The utility model belongs to a kind of filter core of crossing, and particularly a kind of filter membrane is through the folding filter core of high low ebb.

Background technology

At present, existing both at home and abroad folding tube filter core all is a Zhe shape foldable filter element, is central tube and shell inside and outside this filter core, and upper and lower side is sealed by end plate, accompanies the folding filter membrane of Zhe shape in the middle of the filter core.The foldable filter element of Zhe shape has caused waste to the space that utilizes of filter core, because always big than the folding density near housing parts near the folding density of central tube part, when folded inside density reached capacity, folded density did not also have saturated.

The utility model content

The purpose of this utility model is to provide a kind of novel foldable filter element, and this foldable filter element space availability ratio height, filter table area are big, and filtration flow-rate is fast.

Above-mentioned purpose of the present utility model is achieved through the following technical solutions:

A kind of foldable filter element comprises inner central tube, outside shell, last Seal end plate, lower seal end plate and the middle filter membrane that accompanies.Central tube and shell are the cylinder of the perforate of gathering, upper-lower seal end plate and shell, central tube seam; The perforate of lower seal end plate makes it be communicated with central tube.Filter membrane is shaped through high low ebb folding mode, and promptly with the form loop collapsing of low ebb-peak-Gao Gu-peak-low ebb, on central tube, the inboard is a low ebb then, and the outside is the peak, between the two be Gao Gu.

Further, for improving filter quality, filter membrane can be three layers of composite membrane, the inside and outside two-layer nonwoven that is respectively, and middle one deck is a microporous barrier.

Foldable filter element of the present utility model has higher filter core space availability ratio, bigger filter table area, filtration flow-rate faster than the foldable filter element of Zhe shape.

Description of drawings

Fig. 1 is the cross sectional representation of the foldable filter element of prior art;

Fig. 2 is a foldable filter element structural representation of the present utility model;

Fig. 3 is the cross sectional representation of foldable filter element of the present utility model

Wherein, the last Seal end plate of 1-, 2-filter membrane, 3-central tube, 4-shell, 5-lower seal end plate

The specific embodiment

Below in conjunction with accompanying drawing foldable filter element of the present utility model is described in detail.Fig. 2 and Fig. 3 have provided the structural representation of foldable filter element of the present utility model.Foldable filter element of the present utility model is the support frame of filter core with central tube 3 and shell 4, and central tube 3 and shell 4 are the PPC plastic cylinder of the perforate of gathering, and wall thickness all is 1mm, the central tube external diameter 20mm, the shell external diameter 68mm.Be filled with filter membrane 2 between central tube 3 and shell 4, this filter membrane 2 is three layers of composite membrane, inside and outside two-layer be the nonwoven that is used for water conservancy diversion and protective effect, middle one deck is to be used to hold back particulate, guarantees the microporous barrier of precision; The folding mode of filter membrane is that high low ebb is collapsible, and promptly with the form loop collapsing of low ebb-peak-Gao Gu-peak-low ebb, the folding filter membrane 2 that forms is on central tube 3, and the low ebb each point forms

The circle of 20～21mm, high paddy each point forms

The circle of 40～42mm, peak dot forms The circle of 64～66mm.Last sealing PPC plastic end panel 1 and shell 4, central tube 3 seam, lower seal PPC plastic end panel 2 and shell 4, central tube 3 seam.Open at center at lower seal end plate 2

The hole of 20mm is communicated with central tube 3.During work, filtrate flow through successively shell 4, filter membrane 2, central tube 3 flow out from the lower end then, finish whole filter process.

Claims

1, a kind of foldable filter element, comprise inner central tube (3), outside shell (4), last Seal end plate (1), lower seal end plate (5) and the middle filter membrane (2) that accompanies, central tube (3) and the cylinder of shell (4) for the perforate of gathering, the upper-lower seal end plate respectively and central tube (3), shell (4) seam sealing, lower seal end plate (5) center drilling, be communicated with central tube (3), it is characterized in that: said filter membrane (2) is shaped through high low ebb folding mode, promptly with the form loop collapsing of low ebb-peak-Gao Gu-peak-low ebb, be wound on the central tube (3), the inboard is a low ebb, and the outside is the peak, and in the middle of both is Gao Gu.

2, foldable filter element as claimed in claim 1 is characterized in that, said filter membrane (2) is three layers of composite membrane, inside and outside two-layer be nonwoven, middle one deck is a microporous barrier.