JP2016087519A - Filter device and fluid purification system, and replaceable filter cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter device which is capable of securely removing fine matters, can be securely cleaned by a simple cleaning operation without replacement, and is low-cost.SOLUTION: A filter device 50 which filters liquid to remove fine matters mixed into the liquid comprises a filter chamber 11 for filtering liquid, in which a pair of filtration plates 21,22 and a plurality of fiber yarns 100 running between the pair of filtration plates 21,22 constitute a filter part 20, the filter part 20 is arranged in the filter chamber 11, at least one of the pair of filtration plates 21,22 is movable to make a gap between the pair of filtration plates 21,22 variable, a gap between the pair of filtration plates 21,22 is narrowed to make a plurality of fiber yarns 100 become a compressed state and liquid is filtered by the fiber yarns 100 in the compressed state, and the gap between the pair of filtration plates 21,22 is widened to cancel the compressed state of the plurality of fiber yarns 100 and clean the fiber yarns 100.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a filter device, a fluid purification system, and a replaceable filter for removing fine powdered debris contained in a fluid, fine matters such as foreign matters and contaminants in the fluid, contaminants, light dust such as threads and fibers, etc. This relates to the cartridge.

  For example, in a machining apparatus, cutting is performed while supplying a cutting fluid from a supply tank, and the cutting fluid contains fine powdered cutting debris, foreign matter, contaminants, contaminants and other fine matters.

  The cutting fluid containing the fine material is supplied to the filter device, the fine material is removed by the filter device, and the cutting fluid is returned to the supply tank (for example, Patent Document 1).

JP 2001-137743 A

  As such a filter device, for example, there is one that captures and removes fines by a filter membrane, or removes by precipitation, but the filter membrane may be clogged, and if it is clogged, a cleaning solution is used. The filter membrane must be cleaned by flowing it in the direction opposite to the filtration direction, or by disassembling the filter device.

  For example, in the case of washing the filter membrane by flowing the washing liquid from the direction opposite to the filtration direction, it is difficult to wash the filter membrane sufficiently, and the washing operation for disassembling and washing is troublesome. In addition, when the filter membrane is used repeatedly, the filtration accuracy is deteriorated and the filter membrane is likely to be clogged. Therefore, most of the filter membrane is a disposable filter membrane, which is expensive.

  Furthermore, there are some that remove fines with a centrifugal separator or the like, but there is a problem that light waste such as thread or fiber causes removal omission and algae is generated even if it is cleaned.

  The present invention has been made in view of the above circumstances, and it is possible to surely remove fine objects, and it is possible to surely perform washing with a simple washing operation without replacement, and a low-cost filter device and fluid purification system. An object of the present invention is to provide a replaceable filter cartridge.

  In order to solve the above-described problems and achieve the object, the present invention is configured as follows.

Invention of Claim 1 is a filter apparatus which removes the fine substance mixed in a liquid by filtering a liquid,
Equipped with a filtration chamber for filtering liquid,
A filter part is composed of a pair of filtration plates and a plurality of fiber yarns stretched between the pair of filtration plates,
Placing the filter part in the filtration chamber;
At least one of the pair of filtration plates is movable and the interval between the pair of filtration plates is variable,
Narrow the gap between the pair of filtration plates to compress the plurality of fiber yarns into a compressed state and filter the liquid with the compressed fiber yarns,
The filter device is characterized in that the fiber yarn is washed by widening the interval between the pair of filtration plates to release the compressed state of the plurality of fiber yarns.

According to a second aspect of the present invention, the filter section reduces the diameter of the plurality of fiber yarns stretched between the pair of filtration plates stepwise from the outside toward the center, or has a different function. Place more than one kind of fiber yarn,
The filter device according to claim 1, wherein a liquid is supplied from the outside and filtered, and the filtered liquid is discharged from a center side.

In the invention according to claim 3, the filter portion reduces the diameter of a plurality of fiber yarns continuously stretched between the pair of filtration plates from the outside toward the center side,
The filter device according to claim 1, wherein a liquid is supplied from the outside and filtered, and the filtered liquid is discharged from a center side.

  The invention according to claim 4 is provided with filtration density control means for controlling the filtration density by changing the compression state of the plurality of fiber yarns by changing the interval between the pair of filtration plates. It is a filter apparatus of any one of Claim 1 thru | or 3.

  Invention of Claim 5 is equipped with the stirring means which stirs a washing | cleaning liquid when releasing the compression state of these fiber yarns and wash | cleaning the said fiber yarn. It is a filter device given in any 1 paragraph.

The invention according to claim 6 is a centrifugal separator that separates fines contained in a fluid by centrifugal force;
The filter device according to any one of claims 1 to 5, which is disposed downstream of the centrifugal separator.
The filter device includes:
The fluid purification system is characterized in that the remaining fine matter separated by the centrifugal separator is removed.

The invention according to claim 7 is an exchangeable filter cartridge that removes fine substances mixed in the liquid by filtering the liquid,
A filter cartridge comprising a pair of filtration plates and a plurality of fiber yarns stretched between the pair of filtration plates.

  According to an eighth aspect of the present invention, in the filter section, the diameter of the plurality of fiber yarns stretched between the pair of filtration plates in a stepwise manner from the outside toward the center side is reduced, or two different functions are provided. The replaceable filter cartridge according to claim 7, wherein more than one kind of fiber yarns are arranged.

  The invention according to claim 9 is characterized in that the filter portion has a reduced diameter of a plurality of fiber yarns continuously stretched between the pair of filtration plates from the outside toward the center side. Item 8. The replaceable filter cartridge according to Item 7.

  According to a tenth aspect of the present invention, the filtration density can be controlled by changing the compression state of the plurality of fiber yarns by changing the interval between the pair of filtration plates. The replaceable filter cartridge according to any one of items 9.

  With the above configuration, the present invention has the following effects.

  In the first aspect of the invention, the interval between the pair of filtration plates is narrowed so that a plurality of fiber yarns are in a compressed state, and the liquid is filtered with the compressed fiber yarns, thereby reliably removing fine matters mixed in the liquid. When cleaning, widen the gap between the pair of filtration plates to release the compressed state of multiple fiber yarns and clean the fiber yarns, ensuring that the fiber yarns are not disassembled or replaced. Can be used after washing.

  In the second aspect of the invention, the filter portion gradually decreases the diameter of the plurality of fiber yarns stretched between the pair of filtration plates from the outside toward the center, and the liquid is supplied from the outside. Since the filtered and filtered liquid is discharged from the center side, the center side where the filtered liquid is discharged has a higher filtration density than the outside, and it is possible to reliably remove fine substances mixed in the liquid. In addition, by arranging two or more types of fiber yarns with different functions on the outside and inside, one element can handle various types of filtration. For example, oil / water separation (oil adsorption) is performed from the outside, and solid matter removal is performed. And can be decolorized.

  In the invention according to claim 3, the filter portion is configured such that the diameter of the plurality of fiber yarns continuously stretched between the pair of filtration plates from the outside toward the center side is reduced, and the liquid is supplied from the outside. Since the filtered and filtered liquid is discharged from the center side, the center side where the filtered liquid is discharged has a higher filtration density than the outside, and it is possible to reliably remove fine substances mixed in the liquid.

  In the invention according to claim 4, it is possible to easily meet the required filtration conditions by changing the compression state of the plurality of fiber yarns by changing the interval between the pair of filtration plates to control the filtration density. Can do.

  According to the fifth aspect of the present invention, the fiber yarn can be easily and reliably washed by stirring the washing liquid when the fiber yarn is washed by releasing the compressed state of the plurality of fiber yarns.

  According to a sixth aspect of the present invention, there is provided the filter device according to any one of the first to fifth aspects, wherein fine substances contained in the fluid are separated by a centrifugal separator and further disposed at a subsequent stage of the centrifugal separator. By removing the remaining fine material separated by the centrifugal separator, it is possible to more reliably remove the fine material.

  The invention according to claim 7 is an exchangeable filter cartridge that filters a liquid to remove fine matters mixed in the liquid, and a pair of filtration plates and a plurality of fibers stretched between the pair of filtration plates A filter part is comprised with a thread | yarn, a some fiber thread is made into a compression state with a pair of filtration plate, and a liquid can be filtered with the fiber thread of a compression state. Also, for example, when the filtration accuracy decreases after a predetermined period of use, the replaceable filter cartridge can be removed from the liquid flow path and replaced with a new replaceable filter cartridge.

  In the invention according to claim 8, the filter portion discharges the filtered liquid by reducing the diameter of the plurality of fiber yarns stretched between the pair of filtration plates stepwise from the outside toward the center side. The center side to be used has a higher filtration density than the outer side, and it is possible to reliably remove fine matters mixed in the liquid. In addition, by arranging two or more types of fiber yarns with different functions on the outside and inside, one element can handle various types of filtration. For example, oil / water separation (oil adsorption) is performed from the outside, and solid matter removal is performed. And can be decolorized.

  In the invention according to claim 9, the filter portion discharges the filtered liquid by reducing the diameter of the plurality of fiber yarns continuously stretched between the pair of filtration plates from the outside toward the center side. The center side to be used has a higher filtration density than the outer side, and it is possible to reliably remove fine matters mixed in the liquid.

  In the invention according to claim 10, it is possible to control the filtration density by changing the compression state of the plurality of fiber yarns by changing the interval between the pair of filtration plates, thereby easily satisfying the required filtration conditions. can do.

It is a figure which shows the filter apparatus of 1st Embodiment. It is a figure which shows the filter apparatus of 2nd Embodiment. It is a figure which shows the filter apparatus of 3rd Embodiment. It is a figure which shows the filter apparatus of 4th Embodiment. It is a figure which shows the filter apparatus of 5th Embodiment. It is a figure which shows the filter apparatus of 6th Embodiment. It is a figure which shows the filter apparatus of 7th Embodiment. It is a figure which shows the filter apparatus of 8th Embodiment. It is a figure which shows a fluid purification system. It is a figure which shows a replaceable filter cartridge. It is a figure which shows a replaceable filter cartridge. It is a figure which shows a replaceable filter cartridge.

  Embodiments of a filter device, a fluid purification system, and a replaceable filter cartridge according to the present invention will be described below. The embodiment of the present invention shows the most preferable mode of the present invention, and the present invention is not limited to this.

  The filter device, fluid purification system, and replaceable filter cartridge of the present invention are used to remove fine substances contained in other fluids such as pharmaceuticals, chemicals, foods, and beverages, and for automobiles, precision instruments, machine tools, and processing industries. Impurities contained in fluids such as semiconductors and biotechnology, as well as removal of fines such as cutting powder contained in liquid fluids, removal of fines contained in circulating water and drainage fluid of each factory, water treatment, etc. It is used for removal of fine substances such as, and for removal of fine substances that are foreign matters contained in fluids such as washing water and solvents. Thus, it is widely used for capturing and removing fines contained in liquid and gaseous fluids.

[Filter device]
(First embodiment)
The filter device of this embodiment will be described with reference to FIG. Fig.1 (a) shows the filtration state of a filter apparatus, FIG.1 (b) shows the washing | cleaning state of a filter apparatus.

  The filter device 50 according to this embodiment is a device that removes fine substances mixed by filtering a liquid, and includes a filter chamber 11 for filtering the liquid in the device main body 10, and the filter chamber 11 includes a filter unit. 20 is arranged. The filter unit 20 includes a pair of filtration plates 21 and 22 and a plurality of fiber yarns 100 stretched between the pair of filtration plates 21 and 22. The configuration in which the plurality of fiber yarns 100 are stretched is firmly fixed by using a fixing means such as adhering both ends of the fiber yarns 100 to the pair of filtration plates 21 and 22 with an adhesive, or fixing them with an adhesive. .

  At least one of the pair of filtration plates 21 and 22 is movable so that the distance between the pair of filtration plates 21 and 22 can be varied. In this embodiment, the filtration plate 22 is fixed and is driven by the driving means 110 via the operation shaft 23. Thus, the filtration plate 21 is moved. The drive means 110 is configured to move the rod 23 using a cylinder or a motor as a drive source. A mesh plate having a large number of holes is used for the pair of filtration plates 21 and 22.

  The filtration chamber 11 is disposed in a flow path for flowing a liquid, and the liquid is flowed from the flow path 1a on one side to the flow path 1b on the other side to be filtered, but the liquid is filtered from the flow path 1b on the other side. The liquid may be allowed to flow through a flow path on either side. At the time of filtration, the filtration plate 21 is moved by the operation shaft 23, the interval between the pair of filtration plates 21, 22 is narrowed, the plurality of fiber yarns 100 are compressed, the liquid is filtered by the compressed fiber yarns 100, and mixed into the liquid The fines to be captured are captured and removed (FIG. 1 (a)).

  Although the fine substance mixed by filtering a liquid is removed by the fiber yarn 100 in the compressed state, the fine fiber is trapped and removed by the fiber yarn 100 in the compressed state, which may cause clogging. For this purpose, cleaning is performed by flowing liquid from one channel 1a to the other channel 1b and flowing liquid from the other channel 1b to one channel 1a. The filtration plate 21 is moved by the operation shaft 23, the interval between the pair of filtration plates 21 and 22 is widened, the compressed state of the plurality of fiber yarns 100 is released, and the fiber yarns 100 are washed (FIG. 1 (b)). The cleaning liquid is a cleaning liquid mixed with chemicals, tap water, filtered liquid, pure water, steam or the like, and may be not only cleaned but also heat treated with sterilization, sterilization, steam, or the like.

  In this way, by narrowing the distance between the pair of filtration plates 21 and 22 and making the plurality of fiber yarns 100 into a compressed state, the liquid is filtered by the compressed fiber yarns 100 to reliably remove fine matters mixed in the liquid. During cleaning, the interval between the pair of filtration plates 21 and 22 is widened to release the compressed state of the plurality of fiber yarns 100 to wash the fiber yarns 100, and the filter unit 20 is disassembled or replaced. The fiber yarn can be used without washing.

<Fiber yarn>
As the fiber yarn, a flexible yarn such as a spun yarn or a processed yarn can be used. These are synthetic fibers, and single or mixed yarns of these fibers or resin-impregnated yarns can be used. The diameter of the fiber yarn is preferably 0.5 μm to 30 μm.

  By making the fiber yarn into a compressed state, a filtration membrane is formed by the fiber yarn, and this filtration membrane preferably has an average pore diameter in the range of 0.01 μm to 10 μm. Preferably they are 0.45 micrometer or more and 3 micrometers or less, and 0.45 micrometer or less is preferable. Alternatively, it is preferably 0.02 μm or more and 0.2 μm or less, and most preferably 0.02 μm or more and 0.1 μm or less. The filtration density is set by the average pore diameter of the filtration membrane in the compressed state of the fiber yarn.

  For example, in fluid filtration applications such as pharmaceuticals, chemicals, foods, beverages and other fluid filtration products, 0.45 μm or more and 3 μm or less are often used, and in fluid filtration applications of cutting fluids in automobiles, precision equipment, machine tools, and processing industries. Particularly suitable is 0.02 μm or more and 8.0 μm or less. In addition, 0.45 μm or more and 5 μm or less are often used for circulating water and wastewater fluid filtration applications such as water treatment, and 0.02 μm or more and 0.2 μm or less especially for fluid filtration applications such as semiconductors and biotechnology. Things are suitable. As the degree of integration of the semiconductor increases, the pore diameter of the membrane used preferably decreases, and is most preferably 0.02 μm or more and 0.1 μm or less.

(Second Embodiment)
The filter device of this embodiment will be described with reference to FIG. Fig.2 (a) shows the filtration state of a filter apparatus, FIG.2 (b) shows the washing | cleaning state of a filter apparatus.

  The filter unit 20 of this embodiment is configured in the same manner as in the first embodiment, and switching valves 2a and 2b are arranged in flow paths 1a and 1b through which liquid flows. The switching valves 2a and 2b are for switching between the filtration side and the washing side. By setting the switching valves 2a and 2b to the filtration side, the liquid flows from the flow path 1a to the filtration chamber 11 and is filtered by the compressed fiber yarn 100 (FIG. 2 (a)). By setting the switching valves 2a and 2b to the washing side, the liquid flows from the flow path 1d to the filtration chamber 11 in the direction opposite to the washing filtration direction, thereby widening the distance between the pair of filtration plates 21 and 22 and the fiber yarn. When the fiber yarn 100 is washed by releasing the compression state of the fiber 100, the fiber yarn 100 is washed by the pressure at which the liquid flows, and the liquid used for washing is discharged from the flow path 1c (FIG. 2B). The liquid flowing from the flow path 1d to the filtration chamber 11 is a cleaning liquid mixed with chemicals, tap water, filtered liquid, pure water, steam, and the like. In addition to cleaning, heat treatment with sterilization, sterilization, steam, and the like is performed. You can do it.

(Third embodiment)
The filter device of this embodiment will be described with reference to FIG. 3A and 3B show the filtering state of the filter device, and FIG. 3C shows the cleaning state of the filter device.

  The filter device 50 of this embodiment is configured similarly to the first embodiment, but includes a filtration density control means 120. The filtration density control means 120 changes the compression state of the plurality of fiber yarns 100 by changing the interval between the pair of filtration plates 21 and 22 to control the filtration density. The filtration density control means 120 controls the stroke of the filtration plate 21 through the rod 23 using a cylinder or a motor as a drive source. For example, in FIG. 3B, the interval between the pair of filtration plates 21 and 22 is narrower than that in FIG. 3A, and a plurality of fiber yarns 100 can be obtained by varying the interval between the pair of filtration plates 21 and 22. By changing the compression state, the filtration density can be controlled to easily meet the required filtration conditions.

(Fourth embodiment)
The filter device of this embodiment will be described with reference to FIG. FIG. 4A is a diagram applied to the filter device of the first embodiment, and FIG. 4B is a diagram applied to the filter device of the second embodiment.

  In the embodiment of FIG. 4 (a), there is provided a stirring means 130 that stirs when the fiber yarns 100 are washed by widening the interval between the pair of filtration plates 21, 22 to release the compressed state of the plurality of fiber yarns 100. . The agitation means 130 is composed of an injector that injects a cleaning liquid, and can agitate the liquid in the filtration chamber 11 to release the compression state and effectively clean the fiber yarn 100. The stirring means 130 may be constituted by an ultrasonic oscillator that oscillates ultrasonic waves, and may be stirred by oscillating ultrasonic waves into the filtration chamber 11 to give vibration. In the embodiment of FIG. 4B, not only the liquid flows into the filtration chamber 11, but also the switching valves 2a and 2b are closed, the liquid is accumulated in the filtration chamber 11, stirred and washed, and the drain is discharged. Is possible.

(Fifth embodiment)
The filter device of this embodiment will be described with reference to FIG. FIGS. 5A to 5C are diagrams applied to the filter device of the fourth embodiment.

  This embodiment is applied to the filter device of the fourth embodiment. In the embodiment of FIG. 5A, the switching valves 2a and 2b are opened at the time of filtration to filter the liquid. The liquid is filtered by the fiber yarn 100 in a compressed state after flowing into the chamber 11 to remove the fine matters. At the time of washing, the liquid is put into the filtration chamber 11, the switching valves 2 a and 2 b are closed to the washing side, the liquid is accumulated inside the filtration chamber 11, and the mixture is stirred and washed. When draining, the switching valve 2a is closed to the discharging side, and the switching valve 2b is opened to discharge the drain.

  In the embodiment of FIG. 5B, the configuration is the same as that of the embodiment of FIG. 5A, but at the time of cleaning, the switching valve 2b is closed to the cleaning side, and the switching valve 2a is opened to the cleaning side to perform filtration. The chamber 11 is supplied with cleaning liquid mixed with chemicals, tap water, filtered liquid, pure water, steam, etc., stirred and cleaned, and not only cleaning but also sterilization, sterilization, heat treatment with steam, etc. At the time of discharge, the switching valve 2a is closed to the discharge side, the switching valve 2b is opened to the discharge side, and the drain is discharged.

  In the embodiment of FIG. 5C, the configuration is the same as that of the embodiment of FIG. 5A, and the switching valves 2a and 2b are opened at the time of filtration to make the filtration side open. The liquid is filtered by the fiber yarn 100 to remove the mixed fine matters, and the filtrate is stored in the washing liquid tank 90 during the filtration. At the time of cleaning, the switching valve 2b is closed to the cleaning side, the switching valve 2a is opened and the cleaning side is set, the liquid is supplied to the filtration chamber 11, stirred and cleaned, and the filtrate stored in the cleaning liquid tank 90 is poured at the end of the cleaning. When the drain is discharged, the switching valve 2b is opened to the discharge side, and the drain is discharged.

(Sixth embodiment)
The filter device of this embodiment will be described with reference to FIGS. 6 (a) to 6 (c). In FIG. 6A, although it is comprised similarly to 1st Embodiment, the center part 22a of the filtration plate 22 is made into the column shape, and the surface area of the filtration plate 22 is enlarged. By increasing the surface area of the filtration plate 22, the filtration area of the fiber yarn 100 in a compressed state is expanded.

  In FIG. 6B, the apparatus main body 10 has a configuration in which a cylindrical case 24 is provided in the filtration chamber 11, and a portion of the cylindrical case 24 positioned inside the filtration chamber 11 is used as a filtration plate 22. The filtration plate 21 is provided so as to be movable inside the cylindrical case 24, and the portion of the cylindrical case 24 located inside the filtration chamber 11 is used as the filtration plate 22, thereby expanding the filtration area of the fiber yarn 100 in the compressed state. doing. When draining, the switching valve 2c is opened, and the drain after cleaning is discharged from the discharge path 1f.

  In FIG. 6C, the configuration is the same as in the embodiment of FIG. 6B, but the portion of the cylindrical case 24 located inside the filtration chamber 11 is recessed in a cylindrical shape inside by the filtration plate 22. The portion of the cylindrical case 24 positioned inside the filtration chamber 11 is made into a mesh, thereby expanding the filtration area of the fiber yarn 100 in the compressed state.

(Seventh embodiment)
The filter device of this embodiment will be described with reference to FIG. Fig.7 (a) shows the filtration state of a filter apparatus, FIG.7 (b) shows the washing | cleaning state of a filter apparatus. The filter unit 20 of this embodiment includes a pair of filtration plates 21 and 22, and the filtration plates 21 and 22 have inner cylindrical portions 21a and 22a and outer cylindrical portions 21b and 22b, respectively, and the inner cylindrical portions 21a and 22a. A large number of small holes are formed in the outer cylindrical portions 21b and 22b.

  The inner cylindrical portion 21a and the outer cylindrical portion 21b of the filtration plate 21 are provided so as to be movable in contact with the inner cylindrical portion 22a and the outer cylindrical portion 22b of the filtration plate 22, respectively, and between the inner cylindrical portion 21a and the outer cylindrical portion 21b. A plurality of fiber yarns 100 are stretched between the inner cylindrical portion 22a and the outer cylindrical portion 22b. In this embodiment, the diameters of the plurality of fiber yarns 100 are reduced stepwise from the outside toward the center, and the diameters of the plurality of fiber yarns 100 are increased from the outside toward the center, for example, 3 μm, 20 μm, 10 μm, 1 μm. The diameter is gradually reduced. The liquid is supplied from the outside of the outer cylindrical portions 21b and 22b and filtered, and the filtered liquid is discharged from the center side of the inner cylindrical portions 21a and 22a.

  At least one of the pair of filtration plates 21 and 22 is movable so that the distance between the pair of filtration plates 21 and 22 can be varied. In this embodiment, the filtration plate 22 is fixed and is driven by the driving means 110 via the operation shaft 23. Thus, the filtration plate 21 is moved. The drive means 110 is configured to move the rod 23 using a cylinder or a motor as a drive source. In this embodiment, the filter unit 20 gradually reduces the diameter of the plurality of fiber yarns 100 stretched between the pair of filtration plates 21 and 22 from the outside toward the center, and the liquid is supplied from the outside. Since the filtered liquid is discharged from the center side, the center side that discharges the filtered liquid has a higher filtration density than the outside, and it is possible to reliably remove fine matters mixed in the liquid. is there. In addition, by arranging two or more types of fiber yarns with different functions on the outside and inside, one element can handle various types of filtration. For example, oil / water separation (oil adsorption) is performed from the outside, and solid matter removal is performed. And can be decolorized.

(Eighth embodiment)
The filter device of this embodiment will be described with reference to FIG. Fig.8 (a) shows the filtration state of a filter apparatus, FIG.8 (b) shows the washing | cleaning state of a filter apparatus. This embodiment is configured in the same manner as the seventh embodiment, but in this embodiment, a plurality of continuous stretches between a pair of filtration plates 21 and 22 from the outside toward the center side. The diameter of the fiber yarn 100 is reduced, liquid is supplied from the outside and filtered, and the filtered liquid is discharged from the center side. The center side for discharging the filtered liquid has a higher filtration density than the outside. Thus, it is possible to reliably remove fine matters mixed in the liquid.

[Fluid purification system]
The fluid purification system of this embodiment will be described with reference to FIG. This embodiment includes a centrifugal separator 60 that separates fines contained in a fluid by centrifugal force, and a filter device 50 that is disposed at a subsequent stage of the centrifugal separator 60. The filter device 50 of the first to eighth embodiments is used, and the filter device 50 removes the remaining fine material separated by the centrifugal separator 60. In the embodiment of FIG. 8A, the centrifugal separator 60 and the filter device 50 are connected by piping, and in the embodiment of FIG. It is the structure which arranged.

  In the centrifugal separator 60, the liquid flows in from the inlet 66, and the liquid is a liquid containing fine substances. When the liquid is introduced at a predetermined flow rate, a vortex is generated, and the fine objects are moved outward in a centrifugal state. On the outside, the vortex is decelerated and the separated fines settle. The liquid from which the fine objects have been separated is sent to the filtration chamber of the filter device 50. By removing the remaining fine material separated by the centrifugal separator 60 with the filter device 50, it is possible to more reliably remove the fine material. The centrifuge 60 is provided with a discharge pipe 68 at the bottom, and the discharge pipe 68 is provided with a discharge valve 69, and the discharge valve 69 is opened to discharge the precipitated fine matter. The structure of the centrifugal separator 60 is not limited to this embodiment, and may be a general centrifugal separator structure.

[Replaceable filter cartridge]
The replaceable filter cartridge according to this embodiment will be described with reference to FIGS. The exchangeable filter cartridge K of this embodiment is configured to remove the fine matter mixed in the liquid by filtering the liquid, and the same configuration as the actual mode of FIGS. Description is omitted.

  In the embodiment of FIG. 10A, the outer cylindrical portion 21 b of the filtration plate 21 is provided in contact with the outer cylindrical portion 22 b of the filtration plate 22, and is stretched between the filtration plate 21 and the filtration plate 22. The filter unit 20 is constituted by a plurality of fiber yarns 100. The replaceable filter cartridge K is disposed in a liquid flow path, and a plurality of fiber yarns 100 are compressed by a pair of filtration plates 21 and 22, and the liquid is filtered by the compressed fiber yarns. When the filtration accuracy decreases, the replaceable filter cartridge K is removed from the liquid flow path and replaced with a new replaceable filter cartridge.

  In the embodiment of FIG. 10B, the outer cylindrical portion 21 b of the filtration plate 21 is provided so as to be movable in contact with the outer cylindrical portion 22 b of the filtration plate 22, and between the filtration plate 21 and the filtration plate 22. The filter unit 20 is composed of a plurality of stretched fiber yarns 100. This replaceable filter cartridge K is disposed in the liquid flow path, and the interval between the pair of filtration plates 21 and 22 is narrowed so that the plurality of fiber yarns 100 are compressed, and the liquid is filtered by the compressed fiber yarns 100, It is possible to reliably remove the fine matters mixed in the liquid. At the time of washing, the interval between the pair of filtration plates 21 and 22 is widened to release the compressed state of the plurality of fiber yarns 100, and the fiber yarns 100 are washed. Is removed from the liquid flow path and replaced with a new replaceable filter cartridge.

  In the embodiment of FIG. 11A, the inner cylindrical portion 21a and the outer cylindrical portion 21b of the filtration plate 21 are provided in contact with the inner cylindrical portion 22a and the outer cylindrical portion 22b of the filtration plate 22, respectively, and the inner cylindrical portion 21a. A plurality of fiber yarns 100 are stretched between the outer cylindrical portion 21b and the inner cylindrical portion 22a and the outer cylindrical portion 22b. In this embodiment, the diameters of the plurality of fiber yarns 100 are reduced stepwise from the outside toward the center, and the diameters of the plurality of fiber yarns 100 are increased from the outside toward the center, for example, 3 μm, 20 μm, 10 μm, 1 μm. The diameter is gradually reduced. The liquid is supplied from the outside of the outer cylindrical portions 21b and 22b and filtered, and the filtered liquid is discharged from the center side of the inner cylindrical portions 21a and 22a. In addition, by arranging two or more types of fiber yarns with different functions on the outside and inside, one element can handle various types of filtration. For example, oil / water separation (oil adsorption) is performed from the outside, and solid matter removal is performed. And can be decolorized.

  The exchangeable filter cartridge K is disposed in a liquid flow path, and a plurality of fiber yarns 100 are compressed by a pair of filtration plates 21 and 22, and the liquid is filtered by the compressed fiber yarns. The diameter of the plurality of fiber yarns 100 stretched between the pair of filtration plates 21 and 22 stepwise from the outside toward the center side is reduced, the liquid is supplied from the outside to be filtered, and the filtered liquid is centered. Since the center side that discharges the filtered liquid has a higher filtration density than the outside, it is possible to reliably remove fine matters mixed in the liquid. Is lowered, the replaceable filter cartridge K is removed from the liquid flow path and replaced with a new replaceable filter cartridge.

  In the embodiment of FIG. 11 (b), the inner cylindrical portion 21a and the outer cylindrical portion 21b of the filtration plate 21 are provided so as to be movable in contact with the inner cylindrical portion 22a and the outer cylindrical portion 22b of the filtration plate 22, respectively. A plurality of fiber yarns 100 are stretched between the cylindrical portion 21a and the outer cylindrical portion 21b, and between the inner cylindrical portion 22a and the outer cylindrical portion 22b, and the plurality of fiber yarns 100 are stepwise from the outside toward the center side. The diameter is reduced, and the diameters of the plurality of fiber yarns 100 are reduced in three steps, for example, 20 μm, 10 μm, and 1 μm, from the outside toward the center. This replaceable filter cartridge K is disposed in the liquid flow path, and the interval between the pair of filtration plates 21 and 22 is narrowed so that the plurality of fiber yarns 100 are compressed, and the liquid is filtered by the compressed fiber yarns 100, It is possible to reliably remove the fine matters mixed in the liquid. In addition, by arranging two or more types of fiber yarns with different functions on the outside and inside, one element can handle various types of filtration. For example, oil / water separation (oil adsorption) is performed from the outside, and solid matter removal is performed. And can be decolorized. At the time of washing, the interval between the pair of filtration plates 21 and 22 is widened to release the compressed state of the plurality of fiber yarns 100, and the fiber yarns 100 are washed. Is removed from the liquid flow path and replaced with a new replaceable filter cartridge.

  In the embodiment of FIG. 12A, the inner cylindrical portion 21a and the outer cylindrical portion 21b of the filtration plate 21 are provided in contact with the inner cylindrical portion 22a and the outer cylindrical portion 22b of the filtration plate 22, respectively, and the inner cylindrical portion 21a. A plurality of fiber yarns 100 are stretched between the outer cylindrical portion 21b and the inner cylindrical portion 22a and the outer cylindrical portion 22b. In this embodiment, the diameters of the plurality of fiber yarns 100 are continuously reduced from the outside toward the center, and the diameters of the plurality of fiber yarns 100 are continuously increased from, for example, 20 μm to 1 μm from the outside to the center. The diameter is reduced. The liquid is supplied from the outside of the outer cylindrical portions 21b and 22b and filtered, and the filtered liquid is discharged from the center side of the inner cylindrical portions 21a and 22a.

  The exchangeable filter cartridge K is disposed in a liquid flow path, and a plurality of fiber yarns 100 are compressed by a pair of filtration plates 21 and 22, and the liquid is filtered by the compressed fiber yarns. The diameter of the plurality of fiber yarns 100 continuously stretched between the pair of filtration plates 21 and 22 from the outside toward the center side is reduced, the liquid is supplied from the outside to be filtered, and the filtered liquid is centered. Since the center side that discharges the filtered liquid has a higher filtration density than the outside, it is possible to reliably remove fine matters mixed in the liquid. Is lowered, the replaceable filter cartridge K is removed from the liquid flow path and replaced with a new replaceable filter cartridge.

  In the embodiment of FIG. 12B, the inner cylindrical portion 21a and the outer cylindrical portion 21b of the filtration plate 21 are provided so as to be movable in contact with the inner cylindrical portion 22a and the outer cylindrical portion 22b of the filtration plate 22, respectively. A plurality of fiber yarns 100 are stretched between the cylindrical portion 21a and the outer cylindrical portion 21b, and between the inner cylindrical portion 22a and the outer cylindrical portion 22b, and continuously from the outside toward the center side. The diameter is reduced. This replaceable filter cartridge K is disposed in the liquid flow path, and the interval between the pair of filtration plates 21 and 22 is narrowed so that the plurality of fiber yarns 100 are compressed, and the liquid is filtered by the compressed fiber yarns 100, It is possible to reliably remove the fine matters mixed in the liquid. At the time of washing, the interval between the pair of filtration plates 21 and 22 is widened to release the compressed state of the plurality of fiber yarns 100, and the fiber yarns 100 are washed. Is removed from the liquid flow path and replaced with a new replaceable filter cartridge.

  10 (b), FIG. 11 (b), and FIG. 12 (b), the filtration density is changed by changing the compression state of the plurality of fiber yarns by changing the distance between the pair of filtration plates 21 and 22. It is possible to control the filtration conditions easily required.

  The present invention relates to a filter device, a fluid purification system, and a replaceable filter for removing fine powdered debris contained in a fluid, fine matters such as foreign matters and contaminants in the fluid, contaminants, light dust such as threads and fibers, etc. It can be applied to cartridges, can remove fine objects reliably, can be reliably cleaned with a simple cleaning operation without replacement, and is low in cost.

1a, 1b, 1c, 1d Flow path 2a, 2b, 2c Switching valve 10 Device body 11 Filtration chamber 20 Filter part 21, 22 Filtration plate 21a, 22a Inner cylindrical part 21b, 22b Outer cylindrical part 23 Operation shaft 24 Cylindrical case 50 Filter Device 60 Centrifugal device 68 Discharge pipe 69 Discharge valve 90 Washing liquid tank 100 Fiber yarn 110 Drive means 120 Filtration density control means 130 Stirring means K Exchangeable filter cartridge

Claims (10)

It is a filter device that removes fines mixed in the liquid by filtering the liquid,
Equipped with a filtration chamber for filtering liquid,
A filter part is composed of a pair of filtration plates and a plurality of fiber yarns stretched between the pair of filtration plates,
Placing the filter part in the filtration chamber;
At least one of the pair of filtration plates is movable and the interval between the pair of filtration plates is variable,
Narrow the gap between the pair of filtration plates to compress the plurality of fiber yarns into a compressed state and filter the liquid with the compressed fiber yarns,
A filter device that cleans the fiber yarns by widening the interval between the pair of filtration plates to release the compressed state of the plurality of fiber yarns. The filter unit is configured to reduce the diameter of a plurality of fiber yarns stretched between the pair of filtration plates stepwise from the outside toward the center side, or arrange two or more types of fiber yarns having different functions,
2. The filter device according to claim 1, wherein a liquid is supplied and filtered from the outside, and the filtered liquid is discharged from the center side. The filter portion reduces the diameter of a plurality of fiber yarns continuously stretched between the pair of filtration plates from the outside toward the center side,
2. The filter device according to claim 1, wherein a liquid is supplied and filtered from the outside, and the filtered liquid is discharged from the center side.   The filtration density control means which controls the filtration density by changing the compression state of the plurality of fiber yarns by changing the interval between the pair of filtration plates is provided. 2. The filter device according to item 1.   5. The filter device according to claim 1, further comprising a stirring unit that stirs the cleaning liquid when the fiber yarns are cleaned by releasing the compressed state of the plurality of fiber yarns. . A centrifuge for separating fines contained in the fluid by centrifugal force;
The filter device according to any one of claims 1 to 5, which is disposed downstream of the centrifugal separator.
The filter device includes:
The fluid purification system, wherein the remaining fine substance separated by the centrifugal separator is removed. It is a replaceable filter cartridge that removes fines mixed in the liquid by filtering the liquid,
A replaceable filter cartridge comprising a pair of filtration plates and a plurality of fiber yarns stretched between the pair of filtration plates.   The filter portion has a diameter of a plurality of fiber yarns stretched between the pair of filtration plates stepwise from the outside toward the center side, or two or more types of fiber yarns having different functions are disposed. The replaceable filter cartridge according to claim 7.   8. The replaceable filter cartridge according to claim 7, wherein the filter portion has a reduced diameter of a plurality of fiber yarns continuously stretched between the pair of filtration plates from the outside toward the center side. . 10. The filtration density can be controlled by changing the compression state of the plurality of fiber yarns by changing the interval between the pair of filtration plates. 10. Replaceable filter cartridge.