JP2016215149A - Filter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter device that is able to reduce maintenance work and to recover separated solids.SOLUTION: A filter part 11 is formed by arranging a plurality of rod-like members 11A in a cylindrical form, and a slit is provided between rod-like members 11A. The filter part 11 is rotatable in a circumferential direction, and is disposed such that while a rotation shaft is inclined with respect to the surface of a liquid M1 to be filtered, part of it is exposed from the surface of the liquid M1 to be filtered. On the inside of the filter part 11, washing means 15 is provided for washing adhering solids by jetting a fluid towards the outside of the filter part 11, exposed from the liquid M1 to be filtered.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a filtration device for separating a solid contained in a liquid to be filtered.

  In cutting or grinding of metal or the like, the generation of heat is suppressed and workability is ensured by flowing a grinding fluid through the blade and the workpiece. Grinding fluid is circulated and used, but solids such as cuttings and grinding powder are mixed in the grinding fluid, so it is necessary to remove the solids, and a typical method is to use a filter. ing. However, if the filter is continuously used, solid matter accumulates and becomes clogged, and its function is lost. For this reason, maintenance such as periodic backwashing and replacement of the filter is necessary, which is expensive and time-consuming for replacement work. In addition, solid materials may contain expensive metals such as gold and silver, and rare-valued substances represented by rare earths. If these substances can be separated and recovered, resources can be regenerated and recycled. It is preferable because it leads to use.

Japanese Patent Application Laid-Open No. 5-293313

  Patent Document 1 describes a filtration device including a bottomed cylindrical drum filter disposed so that a central axis is substantially horizontal. The outer peripheral wall and the bottom wall of the drum filter are provided with a filter cloth on a rough net-like outer surface, and a cleaning nozzle for backwashing the filter cloth is provided in the drum filter. However, the present invention has a specific configuration different from that of Patent Document 1, and according to the present invention, maintenance work such as filter cloth replacement work can be reduced, and separated solids can be easily removed. It can be recovered.

  The present invention has been made based on such a problem, and an object of the present invention is to provide a filtration device that can reduce maintenance work and collect separated solid matter.

  The filtration device of the present invention has a cylindrical filtration part, and separates solids contained in the filtration target liquid by allowing the filtration target liquid to pass from the outside to the inside of the filtration part. Is formed in a cylindrical shape by arranging a plurality of rod-shaped members, slits are provided between the rod-shaped members, and can be rotated in the circumferential direction, with the rotation axis inclined with respect to the liquid surface of the liquid to be filtered, At the time of filtration, a part is arranged so as to be exposed from the liquid surface of the liquid to be filtered, and on the inside of the filtration part, the fluid is jetted toward the outside exposed from the liquid to be filtered of the filtration part and filtered. A cleaning means for cleaning the solid matter adhering to the section is provided, and a rotating means for rotating the filtration section is provided.

  According to the present invention, a plurality of rod-shaped members are arranged to form a filtration unit, and a slit is provided between the rod-shaped members. Therefore, by injecting fluid from the inside of the filtration unit by the cleaning means, Solid matter attached to the outside can be easily removed. Therefore, maintenance work can be reduced. Further, the filtration unit is disposed so that a rotation axis is inclined with respect to the liquid surface of the filtration target liquid and a part thereof is exposed from the liquid surface of the filtration target liquid, and is exposed from the filtration target liquid of the filtration unit. Since the fluid is ejected toward the outside by the cleaning means, the solid matter adhering to the outside of the filtration unit can be separated from the liquid to be filtered and easily recovered. Thus, resource recycling and reuse can be achieved.

  Also, if the rotator is provided with a wing that rotates the filtration unit using the flow of the filtrate filtered by the filtration unit, the filtration unit is automatically rotated using the flow of the filtrate. Can do.

  Further, if the rotating means has a rotating nozzle that rotates the wing by jetting a fluid, the filtration unit can be rotated more easily.

It is a figure showing the structure of the filtration apparatus which concerns on one embodiment of this invention. It is a figure which decomposes | disassembles and represents a part of filtration apparatus shown in FIG. (A) is the end elevation along the III-III line shown in FIG. 2, (B) is the enlarged view of the part shown with the broken line in (A). FIG. 4 is an end view taken along line IV-IV shown in FIG. 3. Fig. 2 illustrates an arrangement example of the filtration device illustrated in Fig. 1. FIG. 3 shows another arrangement example of the filtration device shown in FIG. 1. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a configuration of a filtration device 10 according to an embodiment of the present invention. FIG. 2 shows a part of the filtering device 10 in an exploded manner. 3 and 4 show an end face configuration of the filtration device 10. This filtration device 10 has a cylindrical filtration part 11, and separates solids contained in the filtration target liquid M <b> 1 by passing the filtration target liquid M <b> 1 from the outside to the inside of the filtration part 11. is there.

  The filtration unit 11 is formed in a cylindrical shape by arranging a plurality of rod-like members 11A, and slits 11B are provided between the rod-like members 11A. Thereby, the solid matter larger than the width of the slit 11 </ b> B cannot pass through the filtration unit 11, and the filtrate M <b> 2 from which the solid matter is separated passes through the inside of the filtration unit 11. The diameter of the filtration unit 11 is preferably about 100 mm to 300 mm, for example. Each rod-like member 11A has, for example, a cylindrical shape, and preferably has a diameter of about 2 mm to 5 mm and a length of about 100 mm to 400 mm. The width of each slit 11B is determined by the size of the solid matter to be separated, but is preferably about 2 μm to 300 μm, for example, and determined by the application.

  The filtration unit 11 is rotatable in the circumferential direction, and is supported by, for example, a support shaft 12 disposed on the rotation shaft. The upper side of the filtration unit 11 in the rotation axis direction is disposed so as to be rotatable with respect to the support shaft 12 by an upper arrangement member 13, for example. The lower side of the filtration unit 11 in the rotation axis direction is disposed so as to be rotatable with respect to the support shaft 12 by a lower arrangement member 14, for example.

  The upper disposing member 13 holds the upper end portion of the rod-shaped member 11A, for example, by sandwiching the upper end portion between the top rib 13A and the top plate 13B in which the upper rib 13A is formed protruding downward at the peripheral edge. And an alignment substrate 13C. For example, an O-ring 13D is preferably disposed inside the upper rib 13A. The upper alignment substrate 13C has, for example, an annular shape, and a plurality of concave grooves 13E in which the rod-like members 11A are disposed are formed on the outer peripheral surface facing the upper rib 13A. The concave groove 13E is preferably a V-shaped groove, for example. The upper disposing member 13 also includes an upper bearing 13F that disposes the top plate 13B so as to be rotatable with respect to the support shaft 12.

  For example, as in the case of the lower arrangement member 13, the lower arrangement member 14 is configured such that the lower end portion of the rod-shaped member 11A is interposed between the base plate 14B that protrudes upward at the peripheral edge and the lower rib 14A is formed, and the lower rib 14A. And a lower alignment substrate 14C that is held while being sandwiched and aligned. For example, an O-ring is preferably disposed inside the lower rib 14A. For example, the base plate 14B is provided with a discharge opening 14D for discharging the filtrate M2 filtered by the filter unit 11. The lower alignment substrate 14C has, for example, an annular shape, and a plurality of concave grooves in which the rod-like members 11A are disposed are formed on the outer peripheral surface facing the lower rib 14A. For example, the concave groove is preferably a V-shaped groove. The lower arrangement member 14 also has a lower bearing 14F that arranges the main plate 14B so as to be rotatable with respect to the support shaft 12.

  The support shaft 12 is disposed obliquely with respect to the liquid surface of the filtration target liquid M1, for example. Thereby, the filtration part 11 is arrange | positioned with the rotation axis inclined with respect to the liquid level of the filtration object liquid M1, ie, the rotation axis inclined with respect to a horizontal surface. The filtration unit 11 is disposed so that a part thereof is immersed in the filtration target liquid M1 and a part thereof is exposed from the liquid surface of the filtration target liquid M1 during filtration. For example, it is preferable that the upper side of the filtration unit 11 disposed obliquely is exposed from the filtration target liquid M1 and the lower side of the half is immersed in the filtration target liquid M1.

  Inside the filtration unit 11, there is provided a cleaning means 15 for cleaning the solid matter adhering to the filtration unit 11 by spraying fluid toward the outside exposed from the filtration target liquid M <b> 1 of the filtration unit 11. The cleaning unit 15 includes, for example, an ejection fluid channel 15A that is provided inside the support shaft 12 and guides the fluid to be ejected, and a plurality of cleaning nozzles 15B that communicate with the ejection fluid channel 15A. It is preferable. For example, each cleaning nozzle 15B is preferably arranged in a straight line with an interval from the support shaft 12. The tip of each cleaning nozzle 15B is preferably extended to, for example, the vicinity of the filtration part 11 exposed from the filtration target liquid M1. For example, a gas such as air is preferable as the fluid. In order to facilitate cleaning by the cleaning means 15, it is preferable to adjust the surface roughness of the rod-shaped member 11A to adjust the adhesion of the solid matter to the rod-shaped member 11A. The surface roughness of the rod-shaped member 11A is preferably about 2 μm to 10 μm, but is not limited thereto.

  The filtration device 10 also includes a rotating means 16 that rotates the filtration unit 11. The rotating means 16 is disposed so as to rotate integrally with the filtering unit 11 on the lower side in the rotation axis direction of the filtering unit 11, for example, and uses the flow of the filtrate M2 filtered by the filtering unit 11. It is preferable to have one or a plurality of wings 16 </ b> A that rotate the filtering unit 11. This is because the filtration unit 11 can be automatically rotated using the flow of the filtrate M2.

  The rotating means 16 preferably further includes one or a plurality of rotating nozzles 16B that rotate the wings 16A by injecting fluid onto the wings 16A. This is to assist the rotation of the filtration unit 11 by the flow of the filtrate M2 and to rotate the filtration unit 11 more easily. For example, the rotary nozzle 16B is preferably connected to the jet fluid channel 15A. It is because the filtration part 11 can be rotated using the fluid for injecting to the filtration part 11, and a structure can be simplified. The tip of the rotary nozzle 16B is preferably extended to the vicinity of the wing 16A.

  The filtration device 10 also includes a storage unit 17 that stores the filtration unit 11, for example. For example, the storage portion 17 is provided with an inflow portion 17A for inflow of the filtration target liquid M1. On the lower side in the rotation axis direction of the filtration unit 11 of the storage unit 17, for example, a filtrate discharge unit 17B that discharges the filtrate M2 is provided. On the side where the filtration unit 11 of the storage unit 17 is exposed from the liquid surface of the filtration target liquid M1, for example, a solid discharge unit 17C that discharges the solid separated from the filtration target liquid M1 is provided.

  In the filtration device 10, for example, when the filtration target liquid M1 flows into the storage part 17 from the inflow part 17, solids are separated outside the filtration part 11 immersed in the filtration target liquid M1, and the filtrate M2 Passes inside the filtration unit 11 and is discharged from a filtrate discharge unit 17B provided on the lower side of the filtration unit 11 in the rotation axis direction. At that time, the filtrate M2 hits the wings 16A, the rotating means 16 is rotated by the flow of the filtrate M2, and the filtration unit 11 is rotated. Thereby, when the part immersed in the filtration object liquid M1 of the filtration part 11 is exposed from the filtration object liquid M1 and comes to the vicinity of the washing nozzle 15B, the filtration part is caused by a fluid such as air ejected from the washing nozzle 15B. 11 is blown off and discharged from the solid discharge unit 17C.

  For example, when the flow rate of the filtration target liquid M1 is large, as shown in FIG. 5, a plurality of filtration devices 10 can be arranged in parallel. Also, for example, when it is necessary to separate the solids for each size, as shown in FIG. 6, a plurality of filtration devices 10 are arranged in series, and the width of the slit 11B is set downstream. By gradually decreasing the size, the solid can be separated according to the desired size.

  As described above, according to the present embodiment, the plurality of rod-shaped members 11A are arranged to form the filtration unit 11, and the slits 11B are provided between the respective rod-shaped members 11A. By ejecting the fluid by 15, the solid matter attached to the outside of the filtration unit 11 can be easily removed. Therefore, maintenance work can be reduced. Further, the filtration unit 11 is disposed so that a rotation axis is inclined with respect to the liquid surface of the filtration target liquid M1, and a part thereof is exposed from the liquid surface of the filtration target liquid M1, and the filtration target liquid M1 of the filtration unit 11 is disposed. Since the fluid is jetted by the cleaning means 15 toward the outside exposed from the solids, the solid matter adhering to the outside of the filtration unit 11 can be separated from the filtration target liquid M1 and easily recovered. Thus, resource recycling and reuse can be achieved.

  Further, if the rotating means 16 has the wings 16A for rotating the filtration unit 11 using the flow of the filtrate M2 filtered by the filtration unit 11, the rotation means 16 automatically uses the flow of the filtrate M2. The filtration part 11 can be rotated.

  Further, if the rotating means 16 has a rotating nozzle 16B that jets and rotates a fluid to the wing 16A, the filtering unit 11 can be rotated more easily.

  The present invention has been described with reference to the embodiment. However, the present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above embodiment, each component has been specifically described. However, it is not necessary to include all the components, and other components may be included.

  It can be used when separating the solid contained in the liquid to be filtered.

  DESCRIPTION OF SYMBOLS 10 ... Filtration apparatus, 11 ... Filtration part, 11A ... Rod-shaped member, 11B ... Slit, 12 ... Support shaft, 13 ... Upper arrangement member, 13A ... Upper rib, 13B ... Top plate, 13C ... Upper alignment board, 13D ... O Ring, 13E ... concave groove, 13F ... upper bearing, 14 ... lower arrangement member, 14A ... lower rib, 14B ... ground plane, 14C ... lower alignment substrate, 14D ... discharge opening, 14F ... lower bearing, 15 ... cleaning means, 15A ... jetting fluid flow path, 15B ... cleaning nozzle, 16 ... rotating means, 16A ... wing, 16B ... rotating nozzle, 17 ... storage part, 17A ... inflow part, 17B ... filtrate discharge part, 17C ... solid matter discharge part

Claims (5)

A filtration device that has a cylindrical filtration part and separates solid matter contained in the filtration target liquid by allowing the filtration target liquid to pass from the outside to the inside of the filtration part,
The filtration unit is formed in a cylindrical shape by arranging a plurality of rod-shaped members, and slits are provided between the rod-shaped members and can be rotated in the circumferential direction. The rotation axis is inclined with respect to the liquid surface of the liquid to be filtered. Then, during filtration, a portion is disposed so as to be exposed from the liquid surface of the liquid to be filtered,
Inside the filtration unit, there is provided a cleaning means for cleaning the solid matter adhering to the filtration unit by ejecting fluid toward the outside exposed from the filtration target liquid of the filtration unit,
A filtration device comprising a rotation means for rotating the filtration unit. The rotating means is disposed so as to rotate integrally with the filtering unit at a lower side in a rotation axis direction of the filtering unit, and the filtering unit utilizes a flow of the filtrate filtered by the filtering unit. The filtration apparatus according to claim 1, further comprising: a wing that rotates the wing. The filtration device according to claim 2, wherein the rotating means includes a rotating nozzle that jets fluid to the wing to rotate the wing. A support shaft for supporting the filtration unit;
An upper arrangement member that rotatably arranges the upper side of the filtration unit on the support shaft;
And a lower arrangement member provided on the support shaft so that the lower side of the filtration part is rotatably arranged and provided with a discharge opening for discharging the filtrate filtered by the filtration part. The filtration device according to any one of claims 1 to 3.   The storage unit includes a storage unit, and the storage unit is provided with an inflow portion for allowing the liquid to be filtered to flow in, and the lower side of the storage unit in the rotation axis direction of the filtration unit is provided with a filtration unit. There is provided a filtrate discharge part for discharging the liquid, and on the side where the filtration part of the storage part is exposed from the liquid surface of the liquid to be filtered, there is a solid substance discharge part for discharging the solid separated from the liquid to be filtered. The filtration device according to any one of claims 1 to 4, wherein the filtration device is provided.

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