JP2007054677A - Cyclone filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a general-purpose cyclone filter constituted so as to ensure a predetermined separating and removing capacity without being replaced even if the viscosity of a dirty liquid or the shape or specific gravity of the foreign matter getting mixed in the dirty liquid changes. <P>SOLUTION: An inner cylinder 8, which is formed into a cylindrical shape by alternately superposing a plurality of arcuate threshold plates at a plurality of the regions on the circumference of a circle so as to leave flowing gaps and can be positionally varied in its radial direction, and an intermediate cylinder 9, which is formed into a cylindrical shape by alternately, superposing a plurality of arcuate threshold plates at a plurality of the regions on the circumference of a circle between the inner cylinder and an outer cylinder so as to leave flowing gaps and can be positionally varied in its radial direction, are provided in a cyclone cylinder 1 comprising an outer cylinder 2 having a conical cylinder 3 having a foreign matter taking-out port 4 formed to the lower part of its cylindrical part Z. A dirty liquid injection port 5 and a filtrate outflow port 7 are provided to the upper part of the outer cylinder and the positions in the radial directions of the inner cylinder and the outer cylinder are made alterable corresponding to a change in the viscosity of the dirty liquid or the shape or specific gravity of the foreign matter getting mixed in the dirty liquid. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cyclone filtration device for centrifuging foreign matters mixed in sewage.

  Cyclone filtration devices that collect foreign substances in a liquid by centrifugation are provided in various structures. In these various cyclone filtration apparatuses, the structures shown in FIGS. 7 and 8 are provided. That is, an inner cylinder arranged with a gap H between the outer cylinder 2 in the cyclone cylinder 1 of the outer cylinder 2 in which a conical cylinder 3 having a foreign substance extraction port 4 is formed in the lower part of the cylindrical portion Z; 80 is a cyclone filtering device constituted by

In such a cyclone filtration device using centrifugal force, the size of the device (radius R1 of the outer cylinder 2, radius R2 of the inner cylinder 80) is calculated as follows from the viscosity of the sewage and the shape and specific gravity of the mixed foreign matter. And the clearance H) between the outer cylinder 1 and the inner cylinder 2 is determined.
Liquid settling depth h = R1-R2 = H
Liquid flow length L = (R1 + R2) / 2 * Number of turns of the flow path → Length of the cylindrical portion Z Gravitational acceleration g = Cyclone centrifugal force G
Centrifugal force G = 1.12 × 10 ⁻⁵ × r × rpm ²
Centrifugal force is proportional to the radius of rotation and proportional to the square of the rotational speed.

In such a cyclone filtration device, the separation and removal ability decreases when the viscosity of the sewage or the shape and specific gravity of the contaminated foreign matter change due to changes in temperature or materials. In order to solve this problem, it is necessary to replace the cyclone filtering device in which the radius R1 of the outer cylinder 2 or the gap H between the outer cylinder 1 and the inner cylinder 2 is changed to change the settling depth h. As a matter of course, there is a problem in that it is necessary to prepare several cyclone filtration devices whose design is changed based on the above calculation, resulting in high costs.
JP 2001-205137 A JP 2003-093925 A

  An object of the present invention is to provide a versatile cyclone filtration device that ensures a predetermined separation and removal capability without replacing the cyclone filtration device even if the viscosity of the sewage or the shape / specific gravity of the mixed foreign matter changes. is there.

  In order to achieve the above object, the present invention provides a plurality of arc-shaped threshold plates on the circumference in a cyclone cylinder of an outer cylinder in which a conical cylinder having a foreign substance take-out port is formed in the lower part of a cylindrical part. An inner cylinder that is formed in a cylindrical shape that is alternately stacked with a flow gap at a plurality of portions, and whose position can be varied in the radial direction, and a plurality of arc-shaped threshold plates between the inner cylinder and the outer cylinder An intermediate cylinder that is formed in a cylindrical shape with a flow gap at a plurality of locations on the circumference in a staggered manner and that is variable in the radial direction is provided, and a sewage inlet and a filtrate flow are provided above the outer cylinder. And a position in the radial direction of the inner cylinder and the intermediate cylinder can be changed in accordance with changes in the viscosity of the sewage and the shape and specific gravity of the contaminated foreign matter.

  According to the present invention, when the viscosity of the sewage and the shape / specific gravity of the mixed foreign matter change and the separation / removal ability is lowered, the predetermined separation / removal ability is secured by changing the radial positions of the inner cylinder and the intermediate cylinder. It can be used with a single cyclone filter without changing to a cyclone filter with a specified separation and removal capability, and can be used in accordance with changes in the viscosity of contaminated liquid, the shape and specific gravity of contaminants. It has the effect of abolishing the replacement work of the cyclone filtration device and reducing the cost.

  The best mode for carrying out the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a cyclone cylinder. The cyclone cylinder 1 is constituted by an outer cylinder 2 in which a conical cylinder 3 having a foreign substance outlet 4 is formed in a lower part of a cylindrical portion Z. Further, a sewage injection port 5 is provided on the upper side of the cylindrical portion Z, and an upper lid 6 is attached to the upper portion of the cylindrical portion Z. A filtrate outlet 7 is provided on the side of the upper lid 6. Is provided.

  In the cyclone cylinder 1, an inner cylinder 8 and an intermediate cylinder 9 are disposed between the inner cylinder 8 and the outer cylinder 1. Both the inner cylinder 8 and the intermediate cylinder 9 have circulation gaps 8a and 9a (see FIG. 2) at a plurality of portions on the circumference, and the position can be varied in the radial direction.

  A specific configuration example of the inner cylinder 8 and the intermediate cylinder 9 will be described with the inner cylinder 8 as a representative in FIG. That is, a circular arc-shaped threshold plate made of an elastic metal or resin material that divides the circumference into a plurality of sheets is formed in a cylindrical shape by alternately overlapping the flow gaps 8a in a plurality of portions on the circumference, The ring 10 attached to the outer surface of each threshold plate is secured to a cylindrical shape by a coil spring 11 that can be expanded and contracted.

  As shown in FIG. 4, the means for enabling the inner cylinder 8 and the intermediate cylinder 9 to be variable in the radial direction is based on an upper sill disc 12 and a lower sill disc 13 coupled by a rod 14 at the center.

  As shown in FIG. 5, the upper sill disc 12 is formed with a plurality of circular grooves 12a having different diameters around the rod 14 on the lower surface of the upper sill plate 12, and bolt insertion holes 12b at a plurality of peripheral positions. have. In addition, as shown in FIG. 6, the lower sill plate 13 is formed with a plurality of circular grooves 13 a having different diameters around the rod 14 on the upper surface of the lower sill plate 13.

  As shown in FIG. 4, when the upper lid 6 is joined to the upper portion of the cylindrical portion Z by bolting with the flange 15, the outer periphery of the upper threshold disc 12 is sandwiched between the flange 15 and the upper portion of the cylindrical portion Z. It is fixed at the top.

  The inner cylinder 8 and the intermediate cylinder 9 have their upper ends inserted into the circular grooves 12a of the upper sill disc 12 and their lower ends inserted into the circular grooves 13a of the lower sill plate 13 so that the upper sill disc 12 and the lower sill plate 13 It becomes a sandwiched form.

  Therefore, in order to change the radius of the inner cylinder 8 and the intermediate cylinder 9, the upper lid 6 is removed from the cylindrical portion Z, and the upper sill disc 12 and the lower sill plate 13 connected by the rod 14 are taken out from the cylindrical portion Z. Then, the rod 14 is removed, and the inner cylinder 8 and the intermediate cylinder 9 are set in arbitrary circular grooves 12a and 13a. At this time, since the inner cylinder 8 and the intermediate cylinder 9 are formed in a cylindrical shape by being alternately overlapped by an arc-shaped threshold plate made of an elastic metal or resin material whose circumference is divided into a plurality of pieces, the radial direction It is smoothly expanded and contracted to be changed to a radius based on the diameters of the circular grooves 12a and 13a, and since it is secured by the expandable and contractible coil spring 11, a cylindrical shape with a changed radius is maintained.

  Thus, after changing the radii of the inner cylinder 8 and the intermediate cylinder 9, the upper sill disc 12 and the lower sill plate 13 are joined by the rod 14, inserted into the cylindrical part Z, and the upper lid 6 is put on the cylindrical part Z. And tighten the bolts.

  In the cyclone filtration device of the present invention, since the inner cylinder 8 and the intermediate cylinder 9 are configured to be variable in the radial direction, an arbitrary rotation radius is set without changing the flow rate in the cyclone cylinder 1. Therefore, the radius of rotation of the flow path can be arbitrarily changed without replacing the cyclone filtration device.

  Accordingly, when the viscosity of the dirty liquid and the shape / specific gravity of the contaminated foreign matter are changed and the separation / removal ability is lowered, the inner cylinder 8 is changed as described above according to the change of the viscosity of the dirty liquid and the shape / specific gravity of the mixed foreign matter. Further, by changing the position of the intermediate cylinder 9 in the radial direction, an appropriate centrifugal force corresponding to the viscosity of the liquid and the shape and specific gravity of the mixed foreign matter can be obtained.

  Therefore, according to the cyclone filtration device of the present invention, it is possible to respond to changes in the viscosity of contaminated liquid, the shape and specific gravity of contaminated foreign matter by a single cyclone filtration device without changing to a cyclone filtration device having a predetermined separation and removal capability. It has the versatility that it can follow, and has the advantages of eliminating the replacement work of the cyclone filter and reducing the cost.

Longitudinal sectional view of the device of the present invention Cross section of cylindrical part Partial perspective view showing the configuration of the inner cylinder and the intermediate cylinder Longitudinal sectional view showing a variable position structure in the radial direction of the inner cylinder and the intermediate cylinder Figure showing top sill board Figure showing the underlaying board Longitudinal cross section of conventional device Cross-sectional view of the cylindrical part of the conventional device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cyclone cylinder 2 Outer cylinder 3 Conical cylinder 4 Foreign substance taking out port 5 Contamination inlet 6 Upper lid filtrate outlet 7 Filtrate outlet 8 Inner cylinder 8a Flow gap 9 Intermediate cylinder 9a Flow gap 10 Ring 11 Coil spring 12 Overlay circle Plate 12a Circular groove 13 Underlay disk 13a Circular groove 14 Rod 15 Flange

Claims (1)

  A plurality of arc-shaped threshold plates are alternately stacked in a plurality of locations on the circumference in a cyclone cylinder of an outer cylinder in which a conical cylinder having a foreign matter outlet is formed at the lower part of the cylindrical portion. A cylindrical inner cylinder whose position can be changed in the radial direction, and a plurality of arc-shaped threshold plates between the inner cylinder and the outer cylinder are provided with flow gaps at a plurality of locations on the circumference. An intermediate cylinder that is formed in a cylindrical shape that is alternately stacked and is capable of changing its position in the radial direction is provided, and a sewage inlet and a filtrate outlet are provided at the upper part of the outer cylinder, and the viscosity of the sewage and the contaminated foreign matter A cyclone filtration device characterized in that the position of the inner cylinder and the intermediate cylinder in the radial direction can be changed in accordance with changes in the shape and specific gravity.

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