CN101596376A

CN101596376A - Filter

Info

Publication number: CN101596376A
Application number: CNA2009101464074A
Authority: CN
Inventors: 马丁·路透
Original assignee: Marco Systemanalyse und Entwicklung GmbH
Current assignee: Marco Systemanalyse und Entwicklung GmbH
Priority date: 2008-06-03
Filing date: 2009-06-02
Publication date: 2009-12-09
Anticipated expiration: 2029-06-02
Also published as: PL218714B1; CN101596376B; DE102008026552B4; DE102008026552A1; RU2397798C1; UA92977C2; PL388173A1

Abstract

The present invention relates to a kind of filter that is used for the scavenging solution hydraulic fluid, this filter has unique winding (Wickelstreifen) as filtrate, and this winding is wound into spiral shape.

Description

Filter

Technical field

The present invention relates to a kind of filter that is used for the scavenging solution hydraulic fluid.

Background technology

In addition, the filter that is used for the scavenging solution hydraulic fluid is made of woven wire cloth.When this filter for example must must bear high pressure and pressure differential in underground mining, then manufacturing expense was very big by contrast.Disclosed filter has the supporting cage (Stuerzkorb) of the inside of being made by the pipe of leaving the hole and the coarse net of being made by wire, and this coarse net is supporting screen pack truly.Originally can be provided with the net that is used to protect filter once more on one's body at screen pack.Here the problem of Cun Zaiing is, screen pack must manufacture the shape and the soldered or bonding one-tenth cylinder on plane.It is very little that being used to of this filter held dirty volume.In this known filter, the fastness between leading section and the rearward end only relies on the support column of leaving the hole to keep.

Summary of the invention

The objective of the invention is to, propose a kind of improved filter that is used for the scavenging solution hydraulic fluid, this filter can be made by cost very cheaply.

This purpose is by the feature of claim 1 and realize that especially thus promptly filter has unique winding as filtrate, and this winding is wound into two fermat spiral shapes.

Two fermat spiral shapes can be made thus with simple method, are about to winding and pack in the spool and rotating scroll subsequently in heart place approximately therein.After winding process finished, the winding of coiling had just formed tubular coiling body, and wherein two of winding ends all are resisted against on the neighboring.

Can be by filter according to the present invention with the purification of simple method realization to hydraulic fluid, wherein this filter has very high fastness and deep layer effect, thereby makes dirty also can the alluvial in the darker layer of filter.Therefore the volume of filter significantly improves.The winding of reeling has formed firm hollow cylinder, and it is made by filtrate separately.

In specification, accompanying drawing and dependent claims, advantageous embodiments of the present invention is described.

According to first advantageous embodiments, winding can be by made with the woven wire cloth of wire screen pack type of attachment, and wherein the broadwise of woven wire cloth and warp-wise wire extend with the about 45 with respect to the longitudinal extension direction of winding.

The wire screen pack is the firm net that is used for fine filter, and wherein the warp-wise wire is different with broadwise wire thickness.Produce not only firm thus but also have the net of pore, yet this net has visibly different intensity on warp-wise and broadwise.What be worth expectation in addition is, promptly filter is under the situation that ambient pressure increases and demonstrate the trend of elongation.This layout by warp-wise in the winding and the about 45 of broadwise wire, can obtain the characteristic of this expection, wherein according to of the present invention, have the filter that is wound into two fermat spiral shapes and also have the attendant advantages that on two kinds of torsional directions, has identical torsional rigidity.Because it is diameter and then girth all can increase in winding process, therefore different with broadwise sensing wiry and produced smooth coiling body based on the warp-wise of each layer.

According to another advantageous embodiments, the winding of coiling has tubular peripheral profile, wherein only on cylindrical two end faces that form like this supporting mass is set, and this supporting mass and coiling body are for example bonding or particularly weld together.Such filter has very firmly but very simple structure, and this is because do not need other support unit two supporting masses on two end faces.In order to realize firm connection, can be for example two supporting masses on the end face be welded together with the woven wire cloth of winding in vacuum drying oven by means of the nickel scolder.

According to another advantageous embodiments, can on the neighboring of the winding of reeling, make an end of winding cover its another end, for example cover and be approximately 20 to 90 °, particularly be approximately 45 ° angular range.In this way, an end of winding covers its another above end, this can realize by following method, promptly when the beginning of winding process, need not accurately spool be arranged on the center of winding, but remove a segment distance from the center, this distance is approximately greater than half girth of completed coiling body.

Make coiling body like this, promptly the flow passage resistance along periphery passes the flow passage resistance of coiling body greater than this.By this method, needn't seal between the layer.

A kind of according to the method that is used to produce aforementioned filter of the present invention, this method comprise the following steps: with by textile material made, particularly pack in the spool and be wound into two fermat spiral shapes in heart place approximately therein by the made unique winding of woven wire cloth.As previously mentioned, in the time should being in overlapping covering state between the end portion section of winding, then will winding accurately in the center is packed spool into, or will accurately not be erected in the winding by spool in the center of winding.Certainly winding is packed in the spool in addition or alternatively scroll rack is located in this winding.

Description of drawings

With reference to accompanying drawing is pure the present invention described exemplarily according to an advantageous embodiments below.Shown in the figure:

Fig. 1 shows the sectional view of the filter in the shell endoporus of packing into;

Fig. 2 shows the vertical view of the winding that is wound into two fermat spiral shapes; With

Fig. 3 shows another embodiment of the winding that is wound into two fermat spiral shapes.

The specific embodiment

Fig. 1 shows the filter 10 that is used for the scavenging solution hydraulic fluid, and this filter has by what woven wire cloth was made and is wound into cylindrical winding 12.

As particularly shown in Figure 2, became the winding of rectangle to be wound into two fermat spiral shapes originally, thereby come the method for winding roll film 12 to obtain to have the coiling body of columniform peripheral profile by the spool that utilizes the center that approximately is arranged on winding.Can come winding roll film like this by reversing spool (Fig. 2) in the clockwise direction, thereby produce columniform coiling body shown in Figure 1, this coiling body welds together with supporting

mass

14 and 16 respectively on two end face.

As ground as indicated in Fig. 1, supporting mass 14 is designed to peviform and has through hole 15 at the center, the basin inside of wherein winding 12 of being reeled being packed into.Supporting mass 16 on Fig. 1 the right equally also has peviform portion section, winding is packed into and is welded in this section.Supporting mass 16 also has external screw thread 17, can utilize this external screw thread that supporting mass is screwed in the hole 18.

Fig. 3 shows another embodiment of filter, and this filter is made by the unique winding 12 that is wound into two fermat spiral shapes.In this embodiment, winding 12 end A has covered about 45 ° angular range of another end B of winding.

Filter shown in Figure 3 by with the made roll of strip of the woven wire cloth of wire screen pack type of attachment around forming, have the size of 230 * 25mm, wherein the size of filtering holes is 25 μ m.The warp-wise of winding 12 and broadwise wire are with the 45 guiding with respect to the longitudinal extension direction of winding.Winding 12 is that axle coiling 6mm, that slot in the center forms around diameter.The angle starting point is greatly about the center of winding, yet slightly removes a segment distance from the center (along the longitudinal extension direction of winding), to realize the overlapping covering of end A and B.The cylinder that is produced has and is approximately 10 to the external diameter of 11mm according to the method.

Claims

1. a filter that is used for the scavenging solution hydraulic fluid is characterized in that, described filter has unique winding (12) as filtrate, and described winding is wound into two fermat spiral shapes.

2. device according to claim 1, it is characterized in that, described winding (12) is made by the woven wire cloth that connects with the wire screen pack, and the broadwise of wherein said woven wire cloth and warp-wise wire extend with the about 45 with respect to the longitudinal extension direction of described winding.

3. filter according to claim 1 and 2 is characterized in that, the described winding (12) of coiling has columniform peripheral profile; And only on these cylindrical two end faces supporting mass (14,16) is set, described supporting mass is especially bonding or weld together with the described winding (12) of reeling.

4. according to each described filter at least in the aforementioned claim, it is characterized in that, on the neighboring of the described winding (12) of reeling, the end (A) of described winding covers another end (B) of described winding, preferably covers and is approximately 20-90 °, particularly is approximately 45 ° angular range.

5. a method that is used to produce the filter that is used for the scavenging solution hydraulic fluid is characterized in that, will be by the made unique winding of textile material greatly in the center of described winding is packed spool into and be wound into two fermat spiral shapes.

6. method according to claim 5 is characterized in that, the mesh grid of applied metal silk is used as textile material, and the broadwise of described woven wire cloth and warp-wise wire extend with the about 45 with respect to the longitudinal extension direction of described winding.

7. according to claim 5 or 6 described methods, it is characterized in that the described winding of coiling welds together with supporting mass respectively subsequently on two end faces of described winding.