KR19990071704A - Filter cartridges and how to play them - Google Patents

Abstract

The present invention relates to a filter cartridge regeneration method and a tool using the regeneration method. Molded carbon fiber reinforced plastic materials provide cartridges with sufficient strength and can therefore be reused. The cartridge is injection molded by using the shape of 60% by weight nylon melts with 40% by weight chopped glass fibers. The resin has a melting temperature of 200 ° C. or higher. The filter element 11 comprises a 100% cellulose element 12 that is reusably shaped or otherwise pressurized by the reinforcing carbon fiber center core 13. The filter element and the core 13 are pressed together or in turn installed in the cartridge 10. Next, in this embodiment, the cartridge 10 includes an annular flare 14 that acts as a filter element lead-in guide and is used to feed the filter element into the cartridge. The tool 20 comprises a clutter assembly 21 using a manually expandable expander 22, so that the expander 22 is inserted into the jaw of the clutter assembly by inserting the clutter assembly 21 into the filter element 11. It is installed to move the 23 to the position 24. The lever 25 is used to extract the clutch assembly 21 and the filter element 11 from the cartridge 10. Once the spent filter element is removed from the cartridge, the cartridge can be reinstalled and returned and reused over and over.

Description

Filter cartridges and how to play them

Current methods for the filtration of fuel or oil in built-in fashion lead to uneco-friendly disposal of saturated filter elements.

In one of the known methods of the art, the built-in fuel or oil filtration of a vehicle uses a flexible filter medium surrounded by a disposable metal can. To replace the spent filter, the user simply replaces the entire can so that the can and the filter media are disposed of simultaneously.

In other conventionally known methods the can is not employed and the flexible filter element is placed directly into the fixed permanent housing of the vehicle. This second method is more preferable from an environmental point of view because only contaminated flexible filter elements are disposed of, but the method of disposal is not transparent at all because it is disposed of in an uncontrolled manner by the end user. not. On the other hand, the method is less user friendly since it must remove oily elements, and in addition, replacement of the filter elements may be performed incorrectly, thereby reducing the filter efficiency.

Since effective filter action is achieved by ensuring that the things to be filtered are correctly passed through the filter, a method of using disposable metal cans is possible because the filter element can be placed very firmly inside the can under controlled manufacturing conditions. More effective. Because of the controlled manufacturing conditions, there is a small risk of incorrect installation due to the geometry of the can and the housing in which the can installation is defined.

Another problem associated with existing filters is that filter elements tend to break up due to the presence of small amounts of water. A small portion of the filter media tends to flow with the filtrate and can block the device downstream of the filter. Also, filter media to date have not been made using paper rolls that are usually made for other purposes, such as, for example, toilet paper rolls. This means that the efficiency of the filter treatment is not optimized.

Another problem with existing can type cartridges is that as the can is an assembly of several parts, it is desirable to reduce the number and improve the durability of the various parts.

Current manufacturing techniques insert filter elements into cans. The filter element is compressed and pushed into the can by the use of pressure. This results in distortion of the filter element to snuggle inside the can. Although it was raised by the Applicant that the can could be recycled, it can be seen that it is a waste of effort to remove the filter element consumed by the can's distortion from the can and to insert a new filter element into the can. there was. Applicants conducted experiments from the point of view of recycling existing cans, but distorted results were obtained by torsion of the cans.

The present invention also solves the problem of known can breakage when existing metal cans are placed under certain circumstances. For example, moving thick oil in cold climates will result in a virtual pressure differential across the can and the can tends to break.

It is an object of the present invention to provide a filter cartridge which at least somewhat mitigates the above mentioned deficiencies with respect to environmental risks and at the same time ensures effective filter action.

It is a further object of the present invention to provide a filter cartridge which provides a useful alternative to the prior art.

Notwithstanding the deficiencies associated with the above-mentioned discardable can type filters, there are other disadvantages and the present invention once again solves these problems. For example, the metal cans are formed in a single unit but must include separate spacer means for retaining filter elements in the can base or the cans may be clogged and obstruct the flow.

The present invention relates to filter cartridges, and in particular, is not limited to recyclable filter cartridges made of reinforcement plastic materials using molding techniques.

DETAILED DESCRIPTION OF THE INVENTION The present invention is described in detail with reference to the accompanying drawings, which more easily understand the present invention and describe suitable embodiments of the invention for practical application.

1 is a flow chart illustrating a preferred embodiment of a playback method according to the present invention.

2 is a perspective view of a representative filter assembly.

3 is a cross-sectional view of a representative filter assembly.

4 is a cross-sectional view of another embodiment of the present invention.

5 is a cross-sectional view illustrating a representative end wall.

6 is a cross-sectional view illustrating an additional embodiment of a center tube suitable for use with the filter assembly according to the present invention.

In a suitable embodiment of the invention, the method for regenerating a filter cartridge comprises the following steps:

(Iii) providing a reproducible filter cartridge;

(Ii) inserting a filter element into the cartridge;

(Iii) continuously inserting the filter cartridge and the elements included therein into the vehicle's filter housing;

(Iii) performing a filtering process with the filter cartridge and the filter element until the element is exhausted;

(Iii) removing the filter cartridge and the spent element from the filter housing;

(Iii) extracting the spent filter element from the cartridge;

(Iii) reusing the cartridge by repeating steps (iii) to (iii).

In another suitable shape, the present invention is directed to a filter cartridge adapted to receive a filter element under compression for firm assembly between the cartridge and the element, the cartridge being hollow and repeatedly removing the filter element from the cartridge. It has sidewalls of sufficient strength for complex use, for example.

The cartridge can be made from any material that can be reused without twisting the cartridge. Molded carbon fiber reinforced cartridges can be used as one of the suitable forms. Suitably the cartridge has an integrated structure and the side wall has an inner surface and becomes an inner cross wall, the inner wall including a filter element support grating for moving the filter across the inner wall of the cartridge through the support grating and at the same time Support very uniformly for the filter element across the inner wall. The inner wall of the can is generally thicker than the side wall to prevent twisting of the inner wall.

The carbon fiber reinforced plastics used in the molding process are suitably made from 60% to 40% of the "Maranyl" nylon reinforced with glass fibers by DuPont, and the nylon is cast in an injection molding process. The cartridge is injection molded at a molding temperature of typically 90 ° C. to 120 ° C. at a high rate to ensure mold filling and reduce the stress of the finished cartridge. The drying time is standard at 3-4 hours at 85 degreeC.

Other suitable molding methods can be used which can operate under extreme deformation under oil temperatures, in which a melting of 260 ° C. is generally provided to provide a limit above the normal oil temperature which can rise to 200 ° C. or higher. The temperature is suitable.

In another aspect, the cartridge holds a filter element for a filler, the cartridge comprising:

An open end, a side wall, and a second end facing the open end of the cartridge, forming an inlet for a filter element;

At least one filter element in a cartridge arranged relative to a center tube defining an outlet passage for the filter arranged as above;

A filtered feedstock that penetrates the inlet for each filter element and will pass through a cross flow path in an outlet passage surrounded by a central tube;

Each filter element wound on a center tube to seal seal with a side wall of said center tube and cartridge;

The feedstock generally axially penetrates through the filter medium into the cross flow path;

Each filter medium contains a substance that cannot be broken down into microorganisms.

Suitable materials that cannot be broken down into microorganisms in each filter medium are fine tissue papers. More suitably the tissue paper is made of virgin pulp. Since virgin pulp is not treated with coloring, the problem of coloring contamination in oil is avoided.

The tissue paper can be selected from a range of grades based on the required flexibility and thickness. Applicants have found that paper flexibility is a factor influencing filter efficiency. The reason is that the softer the tissue, the more sticky the contamination is in oil or fuel. Thus, filters having soft tissue as the filter media have more retention or collection and have a more effective cleaning effect. In addition, soft tissues allow more tissue layers in a given space than hard tissues. This amount also improves the cleaning effect. The paper tissue to which the tissue paper for each filter element is wound and processed must be able to resist tension during winding, thus allowing the filter media to be wound tightly without tearing. The Applicant has confirmed that the paper, rated at about 17 grams per square meter (GSM), is suitable to be wound sufficiently firmly without tearing.

Tissue paper, supplied by Carter Holt Harvey and having a production code number of 5799 10/20 2 plies, is most suitable for filter media made from virgin pulp and rated at 17GSM without defects.

Each filter medium is wound on a center tube in the form of a roll. Advantageously the filter medium has one of the ends adhered to the center tube by means of adhesion. Suitably the adhesive means is inert to lubricants or oils. An example of a sticking means suitable for the filter element of the present invention is 3M Scotch ECR1675 manufactured by 3M. The 3M adhesive does not foam under oil fuel.

By using 17GSM tissue paper, the center tube on which the paper is wound is reduced from a diameter of 38 mm to a diameter of 25 mm, as in a toilet roll in circulation, and its length is 170 mm from a length of 90 mm as in a toilet roll in circulation. Increased in length, while the same outer diameter persists as in toilet rolls used in filter elements in circulation. Such an arrangement of filter media according to the invention is permitted between 43 m and 46 m of tissue paper to be rotated, with about 30 mm to 35 mm width used per filter element forming an annular roll.

Suitably, an inner surface of the cartridge side wall is valleyed or otherwise profiled to prevent traces of feedstock between the side wall and each filter element.

The cross flow path may optionally be filled with a material having a high cross porosity, such as a fabric gauze or in addition to a forming grid.

If two or more filter elements are used, the elements can simply be stacked together in a cartridge. If necessary, adjacent filter media may be spaced apart by spacer means. Suitably the spacer means is a spacer molded of the same material as the cartridge was made.

The cartridge may have a single inlet for introducing the cartridge into an open end for lubricating oil or oil. Optionally, the cartridge may have a separate inlet at the opposite end, and the dispensed cross wall mediates the opposite end, thus forming a continuous filter.

When the inlet is provided at both ends of the cartridge, the center tube and the cross flow path can be arranged between adjacent filter elements on opposite sides of the dispensed wall.

The filter cartridge is properly regenerated, but once each filter element is completely replaced with the solid received and retained, it can be discarded along the filter element.

In another aspect, the invention belongs to a filter housing for filtering a feedstock, and includes the following elements:

Body or housing;

An inlet of the housing such that the supply of feedstock is filtered out of the housing;

An outlet of the housing for flowing filtered feedstock or for filtering from the housing;

A hollow center post coaxially arranged in the housing, the wall of the post having a fluid communication port between its outer side and the bore, the bore being connected to the housing outlet;

A filter cartridge in the housing;

Filter cartridge installation means for providing a loose sealing device of the filter cartridge in the housing to flow the feedstock from the inlet to the outlet through the filter cartridge.

Suitably the housing is closed at its bottom and opened at the top, the top being closed by a cap assembled with sealing means for binding the walls of the housing.

Suitably the housing inlet and the housing outlet are located at the bottom of the housing as discharge ports which allow the contaminated feedstock to be discharged to form the bottom of the housing.

Suitably, the open end (ie inlet) of the (top) filter cartridge is adjacent to the top of the housing such that the feedstock flows upwards from the housing inlet through an annular passageway defined by the housing and the wall of the cartridge.

Suitably, the hollow center post is arranged in the center tube and is sealingly connected to the center tube.

Suitably, the sealing means counteracts the flow of fluid between the housing and the center tube, such that the filtrate of the center tube is arranged to flow through the fluid communication port into the bore of the center post and then to the housing outlet.

Suitably, a filter medium bearing the ring is provided around the upper end of the center tube and supports against the top of the filter medium. A compression spring around the center post is suitably inserted between the housing cap and the retaining ring to seal the top end of the center tube and force the retaining ring with the filter element to retain the filter medium of the cartridge.

Suitably, a pressure knob mounted by screwing onto the center post is supported against the closed end of the cartridge to promote upward the filter cartridge against the compression spring.

Suitably, the individual sealing means seals the center post to the coaxial hole through the retaining ring and the second end of the cartridge.

The filter element is suitably a roll of good quality tissue paper of a standard size. However, filter media that cannot be decomposed into various microorganisms may be used, such as, but not limited to, cotton, hemp, artificial or synthetic fibers or other suitable porous or microporous materials.

The housing, cartridge, center tube, center post, lead and other hardware is preferably made of reusable polymer, ceramic or synthetic and renewable materials.

Suitably, the sealing is performed with an oil resistant elastomer. However, permanently deformed or solid sealing materials can also be used.

The filter cartridge is generally installed in the filter housing. Suitably the filter element has a reusable forming center core so that, during assembly, the filter element and its associated center core are inserted into the cartridge. The central core is generally a tube. Continuously the center tube slides into the core, the center tube having an end flange radially outwardly located around the center core and embedded in a filter element, so that the center core remains the same in the cartridge. Can be clamped against the filter element. A sealing means is suitably provided between the center core and the center tube to prevent traces of the filter between the center tube and the core. The center tube includes a plurality of recesses or grooves at its ends that are operatively located adjacent to the cross end walls of the cartridge to assist in the passage of filtrate moving from the lattice into the center tube. The filter returns to the tube with a small opening generally located concentrically in the center tube.

The filter element support grating is suitably a grating of the leads that extends across the end wall with some of the leads that are deeper than the other to facilitate the movement of the filtrate across the cross end walls. At the same time, the leads are spaced adjacent to support the filter element uniformly and sustain it thereon, and from the cartridge end wall to suppress failure.

Suitably, the cartridge has a wide mouse that narrows toward the main body, which provides a lead-in guide for leading the filter element into the cartridge during assembly. Suitably, the central core of the filter element also includes an inclined lower edge to help guide the core to the filter element position during assembly. Additionally, the center tube also suitably also has an inclined edge to facilitate assembly.

In order to prevent traces of the filter around the filter element along the inner wall of the cartridge, the cartridge suitably includes an inner annular rib.

The seal between the center core and the center tube is generally by using annular grooves on the outer surface of the center tube where the O-ring is located, such that the O-ring is sealed against the core when the center tube is in place. Is formed. Other functions may be installed identically.

In another aspect, the present invention provides a method for regenerating a filter cartridge, the method installs a filter element extraction tool for binding and removing a variable filter element from within a solid filter cartridge, the tool comprising a spent filter And a filter element grip means adapted to be inserted into the filter cartridge to bind the element and to extract the filter element from the cartridge. In general, the tool has a claw adapted to extend under the inflow into the adjacent cartridge to clamp the filter element and is equally retained to pull the filter element out of the cartridge in extracting the tool from within the cartridge. .

In the following, suitable use of an improved cartridge used as a renewable cartridge will be described, but it will be appreciated that the cartridge can be used as a disposable cartridge.

1 schematically illustrates a regeneration method according to the present invention and a suitable tool using the regeneration method.

As shown in the upper left corner of the flowchart, the cartridge is made according to the instructions of the present invention, in which case the cartridge is made of molded carbon fiber reinforced plastic material so that the cartridge can be reused by having sufficient strength. The cartridge is injection molded by using the shape of 60% by weight nylon fusion resin with 40% by weight chopped glass fibers. The resin has a melting temperature of 200 ° C or higher.

The filter element 11 comprises a 100% cellulose element 12 that is reusably shaped or otherwise pressurized by the reinforcing carbon fiber center core 13. The filter element and the core 13 are pressed together or in turn installed in the cartridge 10.

Next, in the above-described embodiment, the cartridge 10 includes an annular flare 14 which acts as a filter element lead-in guide and is used to feed the filter element into the cartridge.

The above-described end wall 15 also includes a raised head which will be described below, and the side wall includes spaced annular leads. The protrusion allows the filter element to be continuously spaced from the end wall, so that the filtrate can move across the end wall 15 into the central core 13. The annular lease is used to prevent the filtrate from moving between the filter element and the wall of the cartridge.

Once the filter element and cartridge are assembled, the center tube 17 is then pressed into the assembly. In this case the center tube comprises a 0-ring 18 shaped sealing means for sealing against the core 13 to prevent the filtrate from moving between the center tube 17 and the core 13.

The filter cartridge is then placed in place in the filter housing as described below.

The housing is associated with the truck 19 outlined and once the filter element 11 is exhausted the entire cartridge is returned from the vehicle 19 to the shop for regeneration. The center tube 17 is withdrawn and then a suitable tool 20 schematically shown in FIG. 1 is used to extract the spent filter element 11 from the cartridge.

As shown, the tool 20 comprises a clutch assembly 21 using a manually expandable expander 22, and thus the expander 22 by inserting the clutter assembly 21 into the filter element 11. Is installed to move the jaw 23 of the clutch assembly to position 24. The lever 25 is used to extract the clutch assembly 21 and the filter element 11 from the cartridge 10. Once the spent filter element is removed from the cartridge, the cartridge can be reloaded and returned and reused over and over.

2 and 3 illustrate how the filter cartridge 10 and its associated elements are used in the filter housing, while FIG. 4 shows the filter assembly 10 and the above in which the filter cartridge is effectively continuous in the case 26. Another embodiment is described in which the filter element has a size of 1/2 and a center wall having a continuous grating is formed at 27. The core and center tube are also both half the size, and substantially the cartridge described in FIG. 4 is a continuous cartridge 10. This special cartridge is installed in the same manner as the cartridge described above, and reproduced in the same general manner. The cartridge of FIG. 3 according to its large capacity is generally used for oil filtration, while FIG. 4 is used for fuel filtration.

A representative end wall of each cartridge described in FIGS. 3 and 4 is shown in FIG. 5, while the end of a suitable center tube with flow passage 28 is shown in FIG. 6.

The foregoing detailed description describes only exemplary embodiments of the invention, and it is understood by those skilled in the art that modifications and variations are possible without departing from the scope of the appended claims of the invention.

Claims (26)

A filter cartridge adapted to receive a filter element under pressure to form a rigid assembly between the cartridge and the element, the cartridge having a hollow shape and having various uses including repeatedly inserting and removing the filter element from the cartridge. Filter cartridges with side walls that are sufficiently rigid for the purpose. 2. The cartridge of claim 1, wherein the cartridge has an integrated structure and the side wall has an inner surface and becomes an inner cross wall, the inner wall including a filter element support grid for moving the filter across the inner wall of the cartridge through the support grid. At the same time providing a very uniform support for the filter element across the inner cross wall of the cartridge. The cartridge of claim 1 or 2, wherein the cartridge comprises a filter element for a filter, the cartridge comprising: An open end, a side wall, and a second end facing the open end of the cartridge, forming an inlet for a filter element; At least one filter element in a cartridge arranged relative to a center tube defining an outlet passage for the filter arranged as above; A filtered feedstock that penetrates the inlet for each filter element and will pass through a cross flow path in an outlet passage surrounded by a central tube; Each filter element wound on a center tube to seal seal with a side wall of said center tube and cartridge; The feedstock generally axially penetrates through the filter medium into the cross flow path; Each filter medium comprises a filter cartridge comprising a substance that cannot be broken down into microorganisms. 4. The filter cartridge of claim 3, wherein the filter element is a tightly wound paper roll and the machine is wound using virgin pulp paper of sufficient strength for the winding machine. The filter cartridge of claim 4, wherein the paper is rated at least 17GSM. 6. The filter cartridge of claim 5, wherein the paper is adhered to the roll by an inert adhesive. 3. The filter cartridge of claim 2, wherein the filter element is wound with paper of 43 m to 46 m. 3. The filter cartridge of claim 2, wherein an inner surface of the cartridge sidewall is corrugated or otherwise profiled to prevent traces of feedstock along the cartridge sidewall. 2. The filter cartridge of claim 1, wherein the cartridge can have individual inlets at opposite ends, and wherein the distributed cross walls mediate the opposite ends, thus forming a continuous filter. A filter assembly coupled with a filter housing for filtering a feedstock and comprising a filter cartridge according to claim 1, the filter assembly comprising: A body or housing; An inlet of the housing such that the supply of feedstock is filtered out of the housing; An outlet of the housing for flowing filtered feedstock or for filtering from the housing; A hollow center post coaxially arranged in the housing, the wall of the post having a fluid communication port between its outer side and the bore, the bore connected to the housing outlet; A filter cartridge in the housing; Filter cartridge installation means for providing a releasable sealing device of the filter cartridge in the housing for flowing the feedstock from the inlet to the outlet through the filter cartridge. 11. The housing of claim 10 wherein the housing is closed at its bottom and open at the top, the top closed by a cap assembled with sealing means for engaging the walls of the housing, the housing inlet and the housing outlet being contaminated. A discharge port for causing the feedstock to form to discharge from the bottom of the housing, the filter assembly located at the bottom of the housing. The method of claim 11, wherein the sealing means is sealed against the flow of fluid between the housing and the center tube, such that the filtrate of the center tube is arranged to flow through the fluid communication port into the bore of the center post and then to the housing outlet. Filter assembly. 13. The filter medium of claim 12, wherein the filter medium holding the ring is provided around an upper end of the center tube and is supported against the top of the filter cartridge, wherein the compression spring around the center post seals the top of the center tube and A filter assembly suitably inserted between the housing cap and the retaining ring for forcing the retaining ring with the filter element to retain the filter medium. 3. The filter element according to claim 2, wherein the filter element has a reusable forming center core such that during assembly the filter element and its associated center core are inserted into a cartridge and the center tube having an end flange and located in the core is radially outward. A filter cartridge that protrudes, is located about a central core, and is embedded in a filter element, such that the center core can be clamped against the filter element to hold the same in the cartridge. 15. The filter cartridge of claim 14, wherein a sealing means is provided between the center core and the center tube to prevent traces of the filter between the center tube and the core. 15. The system of claim 14, wherein the center tube includes a plurality of recesses or grooves at its ends that are operatively located adjacent to the cross end walls of the cartridge to assist in the flow path of the filtrate moving from the grid into the center tube. Filter cartridge. 3. The filter of claim 2, wherein the filter element support grating is a grate of a lease that extends across the cross wall with a slight amount that is deeper than other leads to facilitate movement of the filtrate across the cross wall. cartridge. The filter assembly according to claim 1, wherein the cartridge has a wide mouse narrowed towards the main body, the mouse providing a lead-in guide for leading the filter element into the cartridge during assembly. 15. The filter cartridge of claim 14, wherein the central core of the filter element also includes an inclined lower edge to assist in guiding the core to the filter element position during assembly. 15. The center core and the center tube of claim 14, by using annular grooves on the outer surface of the center tube where the O-ring is located, such that the O-ring is sealed against the core when the center tube is in place. Filter cartridge shaped. (A) providing a reproducible filter cartridge; (B) inserting a filter element into the cartridge; (C) continuously inserting the filter cartridge and the elements included therein into the vehicle's filter housing; (D) performing a filtering process with the filter cartridge and the filter element until the element is consumed; (E) removing the filter cartridge and the spent element from the filter housing; (F) extracting spent filter elements from the cartridge; (G) reusing the cartridge by repeating steps (a) to (g). 22. A filter element extraction tool as recited in claim 21, wherein a filter element extraction tool is installed for binding and removing the variable filter element from within the solid filter cartridge, wherein the tool binds the spent filter element and into the filter cartridge for extracting the filter element from the cartridge. A filter cartridge regeneration method having filter element grip means adapted to be inserted. 22. The tool of claim 21, wherein the tool has a claw adapted to extend under the inflow into the adjacent cartridge to clamp the filter element, the same being adapted to pull the filter element out of the cartridge in extracting the tool from within the cartridge. Filter cartridge recycling method retained. The filter cartridge of claim 1, wherein the cartridge is injection molded using nylon reinforcement produced from glass fibers having a melting temperature of 200 ° C. or higher. 22. The method of claim 21, wherein the cartridge is injection molded using nylon reinforced with glass fibers having a melting temperature of 200 [deg.] C. or higher. 23. The method of claim 22, wherein the cartridge is injection molded using nylon reinforcement produced with glass fibers having a melting temperature of at least 200 ° C.