JP3266640B2 - Method and apparatus for reproducing micro-slit type filter element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for regenerating a micro-slit type filter element.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional filter element. The filter element 31 includes a cylindrical support body 31 ₁ having a large number of through holes (not shown) formed in the outer wall, and a thin wire 31 ₂ wound on the support body 31 ₁ at a predetermined pitch.
And By adjusting the pitch, the slit width is regulated, and filtration accuracy is ensured. The support 3
1 ₁ in the center has a flow hole 31 ₃ along the axis. When using the filter element 31, for example, immersing the filter element 31 to be filtered stock solution, if suction from the circulation hole 31 _3, the liquid being filtered through the slits is in the liquid flow path is collected through the flow hole 31 ₃ You.

However, inorganic substances such as diatomaceous earth as a filter aid and contaminants contained in the undiluted solution are entrapped in the slits and the like, and proteins and saccharides and the like in the undiluted filter solution are fixed, and the function of the filter element 31 is reduced. Lower it. Therefore, conventionally, (1) a method by high-pressure cleaning, (2) calcination and ash treatment, and (3) cleaning with a chemical such as NaOH, etc., are performed to remove the above-mentioned adhered substances and the like.

[0004]

In the above-mentioned conventional method for regenerating a filter element, in the case of (1), it is not easy to clean a relatively deep position of the slit, and in the cases of (2) and (3), the organic material is not easily cleaned. Although it is an object, there is a problem that ash and the like cannot be sufficiently removed, and it is finally disposed of by disposal.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a method and an apparatus which can easily remove foreign substances at a deep position in a liquid passage of a filter element and foreign substances of any substance and regenerate the filter element. And

[0006]

According to the method for regenerating a filter element of the present invention, a flow hole is provided along a central axis,
A method for regenerating a micro-slit type filter element, wherein fine wires are wound at a predetermined pitch so as to form a slit on a cylindrical support provided with a large number of through holes communicating with the flow holes on the outer wall. Rotating the filter element about a central axis, inserting a cleaning blade into the slit of the rotating filter element, mechanically scraping foreign matter in the slit, and pressure-feeding a cleaning material to a flow hole of the filter element. Then, the slit from which the foreign matter has been scraped is cleaned. Preferably, the cleaning material is water or air.

In the filter element regenerating apparatus of the present invention, a slit is formed in a cylindrical support having a through hole provided along a central axis, and a plurality of through holes formed in an outer wall of the through hole. A micro-slit type filter element regenerating apparatus in which fine wires are wound at a predetermined pitch so as to constitute the filter element, wherein one end of the filter element is held and the filter element is rotated around a center axis of the filter element. A turntable, an element supporting member rotatably supporting the other end of the filter element, and a cleaning material guided to a flow hole of the filter element; and the filter element held between the turntable and the element support member. A guide shaft arranged in parallel, and held between the turntable and the element support member A cleaning plate that inserts the tip of the cleaning blade into the slit of the filter element, moves the cleaning blade along the slit with the rotation of the filter element, and moves on the guide shaft while scraping foreign matter in the slit; A cleaning material pressure-feeding device for pressure-feeding the cleaning material to the member and cleaning the slit from which the cleaning blade has scraped off the foreign matter. Preferably, the cleaning material is water or air.

[0008]

The micro-slit type filter element, which requires regeneration, has one end fixed to a turntable, rotated about a central axis, and a cleaning blade of a cleaning plate is inserted into the slit of the rotating filter element to remove foreign matter in the slit. Is mechanically scraped, and a cleaning material is pressure-fed to the flow hole of the filter element via the element supporting member to clean the slit from which the foreign matter has been scraped off and to regenerate the filter element.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing a regenerating device for a micro-slit type filter element of the present invention, and FIG. 2 is an enlarged view of the relationship between the cleaning plate and the cleaning blade of the embodiment of FIG. 1 and the filter element.

[0010] The filter element 11, the center has a flow hole 11 _3, constituting a support ₁₁₁ having a number of through holes leading to the circulation holes 11 ₃ in the outer wall (not shown), a slit in the support 11 ₁ consists fine wire 11 ₂ Metropolitan wound at a predetermined pitch so as to be one end fixed to the center of the rotating disk 13 which is supported by the support frame 12 is rotated. The other end of the filter element 11 is attached to a rotation shaft 15 (an anvil is also possible) rotatably supported by the support frame 14. The rotary shaft 15 has a through hole 15 ₁ is provided along the central axis, the pressure water WS is supplied to the flow hole 11 ₃ of the filter element 11 through the through-hole 15 _1. The guide shaft 16 has a support frame 1 at both ends.
2, 14 attached to the support arms 12 ₁ ,
Attached to 14 _1, and is fixed so as to be parallel to the filter element 11 which is rotated by the turntable 13. Cleaning plate 17 has a cleaning blade 17 ₁ fixed to the distal end, while inserting the tip of the cleaning blade 17 ₁ between the thin wire 11 _{and second} filter element 11 which constitutes the slit, sliding on the guide shaft 16 It is attached to the guide shaft 16 so that it can move freely. The motor 18 rotates the turntable 13 via a pulley and a belt.

Next, the operation of this embodiment will be described. One end of the filter element 11 that has been used for filtration for a predetermined period and needs regeneration treatment is attached to the rotating disk 13, and the other end is attached to the rotating shaft 15. Cleaning plate 17
Is moved to one end of the filter element 11 in accordance with the rotation direction of the turntable 13 and the cleaning blade 1 is moved.
7 ₁ of the tip is set between fine wire 11 ₂ so as to contact the support 11 the _first filter element 11. Next, motor 1
8 is started, the turntable 13 is rotated, and the filter element 11 is rotated. The cleaning blade 17 ₁ is moved on the guide shaft 16 together with the cleaning plate 17 along between thin line 11 _2. Since when rotating the filter element 11 is supplied with a pressure water WS toward the filter element 11 into the through hole 15 ₁ of the rotary shaft 15, a cleaning blade 17 ₁ between fine wire 11 ₂ which has passed through the pressurized water WS Is automatically cleaned by

[0012] Incidentally, in the above embodiment, the cleaning blade 17 _1, or a itself an elastic member, is also preferred to as being pressed at a predetermined pressure to the filter element 11 side by the elastic member. Cleaning blade 17 ₁ may be a plurality. Cleaning blade 17 _first width is preferably 1 / 2-2 / 3 of the thin wire 11 ₂ between the slit width of the filter element 11. The pressurized water may be compressed air.

Next, when the test was regenerated, the following results were obtained. (Test result 1) The amount of water when flowing water at a constant pressure from the inside of the element was measured and compared.

Element of φ30 mm × 500 mml Water pressure of 0.1 kgf / cm ² Before use 40 l / min After filtration test 25 〃 (62.5, 100 before use) After treatment 40 〃 (〃 〃)
100) (Test result 2) When the state of clogging was compared with a microscope by microscopy, it was as shown in FIGS. 3A and 3B before and after regeneration, and foreign matter was almost completely removed from the slit.

[0015]

As described above, according to the present invention, while rotating the micro-slit type filter element for the regeneration required processing, the foreign matter clogged in the slit of the filter element is mechanically scraped, and the cleaning hole is pressure-fed. By cleaning with a material, there is an effect that foreign matter at a deep position of the slit or foreign matter that cannot be removed by the chemical treatment can be removed, and furthermore, there is an effect that a filter element that has been conventionally discarded can be used.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a reproducing apparatus for a micro-slit type filter element of the present invention.

FIG. 2 is an enlarged configuration diagram showing a relationship between a cleaning plate and a filter element in the embodiment of FIG.

FIGS. 3 (a) and 3 (b) are views showing the state of a slit as viewed with a microscope before and after the test.

FIG. 4 is a diagram showing a conventional filter element.

[Explanation of symbols]

REFERENCE SIGNS LIST 11 filter element 11 ₁ support 11 ₂ fine wire 11 ₃ flow hole 12, 14 support frame 12 ₁ , 14 ₁ support arm 13 turntable 15 rotation axis 15 ₁ through hole 16 guide shaft 17 cleaning plate 17 ₁ cleaning blade

Continued on the front page (72) Inventor Yoshimitsu Yoshida 1-1, Namiki Motomachi, Kawaguchi City, Saitama Prefecture Sapporo Beer Co., Ltd. Plant Business Development Department (72) Inventor Ryo Sakazume 1-1, Namiki Motomachi, Kawaguchi City, Saitama Prefecture Sapporo Beer Plant Business (56) References JP-A-59-32432 (JP, A) JP-A-61-129012 (JP, A) JP-A-60-104212 (JP, U) (58) Fields investigated (Int. . ^7, DB name) B01D 41/04

Claims (4)

(57) [Claims] 1. A cylindrical support having a through hole provided along a central axis and having a plurality of through holes communicating with the through hole on an outer wall is provided with thin wires at a predetermined pitch so as to form a slit. In the method of regenerating a wound micro-slit type filter element, the filter element is rotated around a central axis, a cleaning blade is inserted into the slit of the rotating filter element, and foreign matter in the slit is mechanically removed. A method for regenerating a filter element, comprising: scraping off a cleaning material under pressure to a flow hole of the filter element to clean the slit from which foreign matter has been scraped off. 2. The method according to claim 1, wherein the cleaning material is water or air. 3. A cylindrical support provided with a flow hole along a central axis and provided with a large number of through holes communicating with the flow hole on the outer wall is provided with thin wires at a predetermined pitch so as to form a slit. In a reproducing device for a wound micro-slit type filter element, a turntable for holding one end of the filter element and rotating the filter element around a center axis of the filter element, and rotating the other end of the filter element An element supporting member that freely supports and guides a cleaning material to a flow hole of the filter element; a guide shaft disposed in parallel with the filter element held between the turntable and the element support member; Clean the slit of the filter element held between it and the element support member. The cleaning blade is inserted along the slit along with the rotation of the filter element, the cleaning blade moves on a guide shaft to scrape foreign matter in the slit, and the cleaning material is pressure-fed to the element support member. And a cleaning blade for ejecting a cleaning material from the slit from which the cleaning blade has scraped off the foreign matter to clean the slit. 4. An apparatus according to claim 3, wherein said cleaning material is water or air.