JP4277278B2 - Cyclone centrifuge - Google Patents

Description

  The present invention relates to a cyclone type centrifugal separation device that separates and removes fine substances such as fine powdery debris contained in a fluid.

  For example, in a machining apparatus, cutting is performed while supplying a cutting fluid from a supply tank, and the cutting fluid contains fine powder cutting scraps. The cutting fluid containing the fine powdery cutting waste is supplied to the filter device, the cutting waste is removed by the filter device, and the cutting fluid is returned to the supply tank (for example, Patent Document 1).

  In such filter devices, for example, there is a device that removes cutting debris by a filter film or by removing precipitation, and all of them remove fine powder-like cutting debris contained in a large amount in the cutting fluid. There is a problem that it cannot be reliably removed in a short time by the apparatus. In addition, the filter membrane may be clogged. If the filter membrane is clogged, the filter device must first be disassembled and the filter membrane must be cleaned. When this cleaning work or use becomes impossible, replacement work occurs. In addition, when the filter membrane is used repeatedly, the filtration accuracy is deteriorated and the filter membrane is likely to be clogged.

When a cyclone centrifugal separator is used instead of such a filter device, a liquid containing fines is swirled at a predetermined flow rate from the liquid inflow passage, and the fines are moved outwardly in a centrifugal state from the liquid outflow passage. Since the fluid from which the fine objects are separated is discharged and the separated fine objects are settled by decelerating the spiral, problems such as clogging are eliminated (for example, Patent Document 2 and Patent Document 3).
JP 2001-137743 A JP-A-10-286493 JP 2000-288425 A

  By the way, in the cyclone type centrifugal separator, there is only one liquid inflow passage, and in order to improve the separation performance, it is necessary to restrict the liquid inflow passage and increase the flow speed of the spiral. While increasing, it is difficult to obtain a processing flow rate.

  In addition, since a swirl flow is created from one liquid inflow passage, a predetermined flow velocity cannot be obtained, the swirl flow is disturbed, and it is difficult to reduce the separation particle size and a predetermined separation accuracy cannot be obtained. There's a problem.

  For this reason, if a plurality of liquid inflow passages are provided and supplied from the pipe, the processing flow rate can be ensured, but there is a problem that it is difficult to ensure the arrangement space because the apparatus is provided with a plurality of pipes.

  The present invention has been made in view of such circumstances, and it is possible to easily secure a processing flow rate with a small size, and to improve the separation accuracy by reducing the separation particle size. It is an object of the present invention to provide a cyclone type centrifugal separator that can be easily changed.

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

According to the first aspect of the present invention, the liquid containing the fine substance is supplied from the liquid discharge passage to generate the vortex at a predetermined flow rate, and the fine object is moved outward in the centrifugal state to separate the fine substance from the liquid outflow passage. A cyclone section for discharging the fluid and decelerating the spiral to settle the separated fines;
The liquid discharge passage is arranged at a plurality of locations,
A hydraulic chamber formed in communication with the periphery of the liquid discharge passages at the plurality of locations;
A liquid introduction passage for introducing a liquid containing the fine substance into the hydraulic chamber;
Have
An introduction pipe portion having the liquid introduction passage;
An orifice ring that is disposed inside the introduction pipe portion and has the liquid discharge passage formed at a plurality of locations;
Have
The cyclone centrifugal apparatus is characterized in that the hydraulic chamber is formed between the introduction pipe portion and the orifice ring .

According to the second aspect of the present invention, the liquid containing the fine substance is supplied from the liquid discharge passage to generate a vortex at a predetermined flow rate, and the fine substance is moved outward in the centrifugal state to separate the fine substance from the liquid outflow passage. Disposing the fluid, arranging a plurality of cyclone parts in parallel to decelerate the spiral and settle the separated fines,
The liquid discharge passages are arranged at a plurality of locations in each of the cyclones,
The hydraulic chamber formed in communication with the plurality of liquid discharge passages;
A liquid introduction passage for introducing a liquid containing the fine substance into the hydraulic chamber;
An external discharge part that collects and discharges the liquid outflow passages of the respective cyclone parts;
Provided,
An introduction pipe portion having the liquid introduction passage;
An orifice ring disposed inside the introduction pipe portion and having the liquid discharge passage formed at a plurality of locations;
The cyclone centrifugal apparatus is characterized in that the hydraulic chamber is formed between the introduction pipe portion and the orifice ring .

The invention according to claim 3 is the cyclone centrifugal device according to claim 1 or 2 , wherein the liquid discharge passages are arranged at a plurality of symmetrical positions as viewed from the axial direction. is there.

The invention according to claim 4 is the cyclone centrifugal separator according to any one of claims 1 to 3 , wherein the liquid discharge passages are arranged at equal intervals.

The invention described in claim 5, wherein the liquid discharge passage, cyclone according to any one of claims 1 to 4, characterized in that flowing the liquid in a tangential direction of the inner wall of the orifice ring It is a centrifuge.

A sixth aspect of the present invention is the cyclone centrifugal apparatus according to any one of the first to fifth aspects, wherein the liquid discharge passage is formed in a curved shape.

A seventh aspect of the present invention is the cyclone according to any one of the first to sixth aspects, wherein the liquid discharge passage has a cross-sectional area on the inlet side larger than a cross-sectional area on the outlet side. Type centrifuge.

According to an eighth aspect of the present invention, the liquid discharge passage has a straight straight passage surface parallel to a tangent to the inner wall of the orifice ring, and a convex curved passage surface on the straight passage surface side. The cyclone-type centrifuge according to claim 7 .

According to a ninth aspect of the present invention, a liquid inflow portion having the liquid discharge passage formed at the upper portion in the vertical direction of the cyclone portion, the upper portion being opened,
A lid that closes the opening of the liquid inflow portion and has the liquid outflow passage;
The cyclone centrifugal device according to any one of claims 2 to 8 , wherein the orifice ring is detachably supported between the liquid inflow portion and the lid.

The invention according to claim 10 is the cyclone centrifugal device according to claim 2, wherein the external discharge portion is arranged on a line different from an extension line of the liquid introduction passage.

The invention according to claim 11, wherein the external discharge unit is a cyclone centrifugal separator according to claim 2, characterized in that arranged on the extension of the liquid introduction passage.

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

In the first aspect of the present invention, the liquid containing the fine substance is introduced from the liquid introduction passage into the hydraulic pressure chamber, and the liquid containing the fine substance is supplied from the hydraulic pressure chamber to the cyclone portion through the liquid discharge passages at a plurality of locations. A vortex is generated at a predetermined flow rate. By disposing and increasing the liquid discharge passages for supplying the liquid at a plurality of locations, the processing flow rate can be increased. In addition, the supply pressure of the liquid discharge passages at multiple locations is made uniform by the hydraulic chamber, and a liquid swirl containing rectified fines without turbulence can be obtained. As a result, the flow velocity increases and the separation particle size is reduced. Is possible and the separation accuracy is improved. In addition, the treatment flow rate can be increased from a pipe connected to one liquid introduction passage by the hydraulic chamber, and there is no need to provide a plurality of pipes, and the arrangement space can be easily secured with a small size. In addition, by arranging an orifice ring with multiple liquid discharge passages in the introduction pipe section, a fluid pressure chamber communicating with the liquid discharge passage can be easily formed between the introduction pipe section and the orifice ring. can do. In addition, the separation particle size can be easily changed by sliding the inner ring body and the outer ring body of the orifice ring in the circumferential direction to change the liquid inflow amount of the liquid discharge passage.

In the second aspect of the present invention, a plurality of cyclones are arranged in parallel, a liquid containing fine substances is introduced from the liquid introduction passage into the hydraulic pressure chamber, and the fine objects are discharged from the hydraulic pressure chamber by a plurality of liquid discharge passages. It is possible to further increase the treatment flow rate by supplying a liquid containing a cyclone to each cyclone unit to generate a vortex at a predetermined flow rate and increasing the cyclone unit. In addition, the supply pressure of the liquid discharge passages at a plurality of locations in each cyclone section is made uniform by the hydraulic chamber, and a liquid swirl containing rectified fines without disturbance in each cyclone section can be obtained. As the flow rate increases, the separation particle size can be reduced and the separation accuracy is improved. In addition, the treatment flow rate can be increased from the pipe connected to one liquid introduction passage by the hydraulic chamber, there is no need to provide a plurality of pipes, and even if a plurality of cyclone parts are arranged in parallel, it is small and easy to secure an arrangement space. It is. In addition, by arranging an orifice ring with multiple liquid discharge passages in the introduction pipe section, a fluid pressure chamber communicating with the liquid discharge passage can be easily formed between the introduction pipe section and the orifice ring. can do. In addition, the separation particle size can be easily changed by sliding the inner ring body and the outer ring body of the orifice ring in the circumferential direction to change the liquid inflow amount of the liquid discharge passage.

In the third aspect of the invention, the liquid discharge passages are arranged at a plurality of symmetrical positions as viewed from the axial direction, so that a vortex of the rectified liquid without disturbance can be obtained, and as a result, the flow velocity is increased. The separation particle size can be reduced and the separation accuracy can be improved.

In the invention described in claim 4 , the liquid discharge passages are arranged at equal intervals, and a vortex of the rectified liquid without disturbance can be obtained. As a result, the flow velocity is increased and the separation particle size can be reduced. Separation accuracy is improved.

In the invention according to claim 5 , the liquid discharge passage allows the liquid to flow in the tangential direction of the inner wall of the orifice ring, thereby obtaining a rectified swirl without disturbance along the inner wall of the orifice ring. The flow rate increases and the separation particle size can be reduced, improving the separation accuracy.

In the invention according to claim 6 , since the liquid discharge passage is formed in a curved line, a turbulent rectification without turbulence along the inner wall of the orifice ring can be obtained. The separation accuracy can be improved.

In the invention according to claim 7 , the liquid discharge passage has a larger cross-sectional area on the inlet side than a cross-sectional area on the outlet side, the flow velocity from the liquid discharge passage is increased, and the separation particle size can be reduced and the separation accuracy can be reduced. Will improve.

In the invention described in claim 8 , since the liquid discharge passage has a straight straight passage surface and a curved passage surface, the flow velocity is increased by the straight passage surface and the curved passage surface, and a predetermined separation processing amount and separation performance can be obtained. Obtainable.

According to the ninth aspect of the present invention, the orifice chamber is detachably supported between the liquid inflow portion and the lid on the upper portion of the cyclone portion in the vertical direction, so that the hydraulic pressure chamber communicating with the liquid discharge passage can be simplified. Can be formed.

In the invention according to claim 10 , the external discharge part is arranged on a line different from the extension line of the liquid introduction passage, and the cyclone type centrifugal is changed without changing the pipe direction when the pipe direction of the external discharge part and the liquid introduction passage is different. Separation devices can be arranged.

In the invention according to claim 11 , the cyclone centrifugal device is arranged without changing the piping direction when the external discharge portion is arranged on the extension line of the liquid introduction passage and the piping directions of the external discharge portion and the liquid introduction passage are the same. Can be arranged.

  Hereinafter, although the embodiment of the cyclone centrifugal separator of the present invention will be described, the present invention is not limited to this embodiment. The embodiment of the present invention shows the most preferable mode of the present invention, and the terminology of the present invention is not limited to this.

  The cyclone centrifuge of this embodiment is used for filtering fine materials such as pharmaceutical, chemical, food and beverage ingredients, and for collecting fine materials such as cutting powders for automobiles, machine tools and processing industries. Used for filtration of circulating water and wastewater in factories, water treatment, etc., removal of fines such as impurities such as semiconductors and biotechnology, and removal of fines such as washing water and solvents, etc. Widely used for separating and removing contained fines.

  An example of the cyclone centrifugal apparatus of this embodiment is shown in FIGS. 1 is a cross-sectional view of a cyclone-type centrifuge, FIG. 2 is a plan view of the cyclone-type centrifuge, and FIG. 3 is a cross-sectional view taken along line III-III of FIG.

  In this embodiment, a case of using for collecting fine objects such as machine tools and cutting powder of processing industry will be described. In this embodiment, although it is used about the case where the fine thing of fine powdery waste contained in a liquid is removed, it should just be a fine thing and is not limited to fine powdery waste.

  The cyclone centrifugal device 1 of this embodiment has a cyclone part 3 and a particle collecting part 4 in a vertical direction in a sealed cylinder 2, and the sealed cylinder 2 is formed of a metal such as SUS or aluminum. There is strength.

  The cyclone part 3 has two upper and lower tapered parts 3 a and 3 b, and the lower tapered part 3 b communicates with the particle collecting part 4 through the communication hole 5. A fluid containing fines is supplied from the liquid discharge passage 10 in the cyclone unit 3 to generate a vortex at a predetermined flow rate, and the fines are separated from the liquid outflow passage 11 by moving the fines outward in a centrifugal state. Discharge and decelerate the vortex to settle the separated fines.

  The separated fines settled in the cyclone section 3 fall and accumulate in the particle collecting section 4 through the communication holes 5. In the particle collecting unit 4, a drain valve 6 is connected to a lower discharge hole 4 a, and fine drainage accumulated in the particle collecting unit 4 is discharged by the drain valve 6.

  The cyclone centrifuge 1 of this embodiment includes a liquid pressure chamber 12 formed by disposing the liquid discharge passages 10 at a plurality of locations and communicating around the liquid discharge passages 10 at the plurality of locations. And a liquid introduction passage 13 for introducing a liquid containing fine substances. A plurality of liquid discharge passages 10 are formed in an orifice ring 14, and the orifice ring 14 is disposed inside an introduction pipe portion 20 having a liquid introduction passage 13 for introducing a liquid containing a fine substance. A fluid pressure chamber 12 communicating with the liquid discharge passage 10 is formed between the nozzle ring 14 and the orifice ring 14.

  In this embodiment, the introduction pipe part 20 is formed in the upper part of the cyclone part 3 in the vertical direction with an upper opening and is constituted by a liquid inflow part 20a having a liquid discharge passage 10, and the liquid inflow part 20a The opening is closed with a lid 20b having a liquid outflow passage 11, and the orifice ring 14 is detachably supported between the liquid inflow portion 20a and the lid 20b. The packing 30 is engaged with the annular groove 20a1 of the liquid inflow portion 20a, the packing 31 is engaged with the annular groove 20b1 of the lid 20b, and the orifice ring 14 is liquid-tightly supported between the packing 30 and the packing 31. Has been. The orifice ring 14 is provided in a replaceable manner.

  Between the orifice ring 14 and the cylindrical portion 20b2 forming the liquid outflow passage 11 of the lid 20b, an introduction chamber 19 communicating with the upper taper portion 3a of the cyclone portion 3 is formed. The cutting fluid, which is a fluid, is supplied from a plurality of liquid discharge passages 10 to the introduction chamber 19 and enters the upper taper portion 3a as a vortex.

  The cyclone-type centrifugal separation device 1 of this embodiment is arranged in a system that performs cutting while supplying a cutting fluid that is a fluid, for example, and uses a cyclone to remove a cutting fluid that contains fine powder-like cutting scraps that are fine objects. This is supplied to the mold centrifuge 1 and the cutting waste is removed by the cyclone centrifuge 1 to return the cutting fluid to a supply tank or the like.

  The cutting fluid is introduced into the hydraulic pressure chamber 12 from the liquid inflow passage 13 of the cyclone centrifugal separator 1, and the cutting fluid is supplied from the hydraulic pressure chamber 12 to the upper tapered portion 3 a of the cyclone portion 3 through the liquid discharge passages 10. To generate a vortex at a predetermined flow rate. From this upper taper portion 3a to the lower taper portion 3b, a vortex is generated at a predetermined flow rate, resulting in a centrifugal state. Due to this action, fine objects are moved outward, and fine fluid from which fine objects have been removed flows from the axial direction to the liquid outflow passage 11 direction. Ascend to flow. By decelerating the spiral from the upper taper portion 3a to the lower taper portion 3b, the fine matter settles and is guided to the communication hole 5 and sequentially enters the lower particle collecting portion 4, and the fine matter 40 is transferred to the particles. It settles in the collection part 4.

  In the cyclone centrifugal separator 1 of this embodiment, the processing flow rate can be increased by increasing the liquid discharge passage 10. Further, the supply pressures of the liquid discharge passages 10 at a plurality of locations are made uniform by the fluid pressure chamber 12, and a vortex of the rectified cutting fluid without any disturbance can be obtained. As a result, the flow velocity is increased and the separation particle size is reduced. Possible and improved separation accuracy. Further, the treatment flow rate can be increased from the pipe 41 connected to the liquid introduction passage 13 at one location by the hydraulic pressure chamber 12, and it is not necessary to provide a plurality of pipes, and it is small and it is easy to secure an arrangement space.

  In addition, by arranging an orifice ring 14 in which the liquid discharge passage 10 is formed at a plurality of locations inside the introduction pipe portion 20, a liquid communicating with the liquid discharge passage 10 is provided between the introduction pipe portion 20 and the orifice ring 14. The pressure chamber 12 can be easily formed.

  4 to 6 show another embodiment of the cyclone centrifugal device, FIG. 4 is a sectional view of the cyclone centrifugal device, FIG. 5 is a plan view of the cyclone centrifugal device, and FIG. It is sectional drawing which follows a VI-VI line.

  The cyclone centrifuge 1 of this embodiment has a plurality of cyclone sections 3 arranged in parallel as in the embodiment of FIGS. 1 to 4, and the embodiment of FIGS. The same components as those in FIG.

  In this embodiment, five cyclone units 3 are arranged, and each cyclone unit 3 is supplied with a liquid containing fine substances from the liquid discharge passage 10 to generate a vortex at a predetermined flow rate, and the fine objects are centrifuged. Is moved outward to discharge the fluid from which the fine objects have been separated from the liquid outflow passage 11, and the spiral is decelerated to settle the separated fine objects. A plurality of liquid discharge passages 10 are arranged in each cyclone portion 3, and a fluid pressure chamber 12 is formed in communication with the plurality of liquid discharge passages 10. The fluid pressure chamber 12 is formed in the orifice ring 14, and a liquid introduction passage 13 that communicates with the liquid discharge passage 10 and introduces a liquid containing a fine substance is formed. Moreover, the external discharge part 50 which collects and discharges the liquid outflow passage 11 of each cyclone part 3 is formed.

  In this way, a plurality of cyclone portions 3 are arranged in parallel, and a liquid cutting fluid containing fine substances is introduced from the liquid introduction passage 13 into the hydraulic chamber 12, and a plurality of liquid discharge passages 10 are provided from the hydraulic chamber 12. By supplying a liquid containing fines to each cyclone unit 3 to generate a vortex at a predetermined flow rate and increasing the cyclone unit 3, the processing flow rate can be further increased. Further, the supply pressures of the liquid discharge passages 10 at the plurality of locations of each cyclone unit 3 are made uniform by the hydraulic chambers 12, and a liquid swirl containing rectified fines without any disturbance is obtained in each cyclone unit 3. As a result, the flow rate is increased and the separation particle size can be reduced, and the separation accuracy is improved. Further, the processing flow rate can be increased from the pipe 51 connected to one liquid introduction passage 13 by the hydraulic pressure chamber 12, so that it is not necessary to provide a plurality of pipes 51, and a plurality of cyclone portions 3 can be arranged in a small size. It is easy to secure space.

  In this embodiment, the external discharge part 50 is arranged on a line L2 different from the extension line L1 of the liquid introduction passage 13. In the case where the external discharge part 50 is arranged on a line L2 orthogonal to the extension line L1 of the liquid introduction passage 13, and the cyclone centrifugal device 1 is arranged in a corner part of equipment or facility, the external discharge part When the piping direction of 50 and the liquid introduction passage 13 is different, the cyclone centrifugal device 1 can be arranged without changing the piping direction.

  7 to 9 show still another embodiment of the cyclone centrifugal separator, FIG. 7 is a sectional view of the cyclone centrifugal separator, FIG. 8 is a plan view of the cyclone centrifugal separator, and FIG. It is sectional drawing which follows the IX-IX line.

  The cyclone centrifuge 1 of this embodiment has a plurality of cyclone sections 3 arranged in parallel as in the embodiment of FIGS. 1 to 4, and the embodiment of FIGS. The same components as those in FIG.

  Further, in this embodiment, five cyclone portions 3 are arranged as in the embodiment of FIGS. 4 to 6, but the external discharge portion 50 is arranged on the extension line L <b> 1 of the liquid introduction passage 13. Yes. The external discharge part 50 is arranged on the extension line L1 of the liquid introduction passage 13, and in the case where the external discharge part 50 is arranged on a straight line or the like between devices, the piping direction of the external discharge part 50 and the liquid introduction passage 13 is the same. In this case, the cyclone centrifugal separator 1 can be arranged without changing the piping direction.

  Next, the embodiment of the cyclonic centrifugal device shown in FIG. 1 to FIG. 3, the embodiment shown in FIG. 4 to FIG. 6, and the embodiment of the orifice ring 14 used in the embodiment shown in FIG. 7 to FIG. Are shown in FIGS.

  In the orifice ring 14 of the embodiment of FIG. 10, the liquid discharge passages 10 are disposed at a plurality of two symmetrical positions as viewed from the axial direction, and are positioned at equal intervals of 180 degrees. 10A to 10C, the liquid discharge passage 10 is linearly formed so that liquid flows in the tangential direction of the inner wall 14c of the orifice ring 14.

  FIG. 10 (d) shows another embodiment of the liquid discharge passage 10, where the cross-sectional area of the inlet side 100 of the liquid discharge passage 10 is larger than the cross-sectional area of the outlet side 101, and the liquid moves from the inlet side 100 to the outlet side 101. Accordingly, the flow velocity from the liquid discharge passage 10 is increased, and the separation particle size can be reduced and the separation accuracy is improved.

  FIG. 10E shows another embodiment of the liquid discharge passage 10, which is configured in the same manner as FIG. 10D, but is a straight straight line parallel to the tangent line in the cross section orthogonal to the axial direction. The passage surface 10g1 has a curved passage surface 10g2 having a convex curve on the straight passage surface side. The straight passage surface 10g1 and the curved passage surface 10g2 increase the flow velocity from the liquid discharge passage 10 to reduce the separation particle size and improve the separation accuracy.

  The orifice ring 14 of the embodiment of FIG. 11 is configured in the same manner as in FIG. 10, but the liquid discharge passages 10 are arranged at a plurality of four symmetrical positions as viewed from the axial direction, and are positioned at equal intervals of 90 degrees. is doing.

  In the orifice ring 14 of the embodiment shown in FIG. 12, the liquid discharge passages 10 are arranged at a plurality of four symmetrical positions as viewed from the axial direction, and are positioned at equal intervals of 90 degrees. Further, the liquid discharge passage 10 is formed in a curved shape so that the liquid flows in the tangential direction of the inner wall 14 c of the orifice ring 14.

In this way, the orifice ring 14 can obtain a vortex of rectified liquid without any disturbance by arranging the liquid discharge passages 10 at a plurality of symmetrical positions when viewed from the axial direction, resulting in a flow velocity. The separation particle size can be reduced and the separation accuracy is improved. Further, the liquid discharge passages 10 are arranged at equally spaced positions, and a turbulent liquid swirl without turbulence can be obtained. As a result, the flow velocity is increased, the separation particle size can be reduced, and the separation accuracy is improved. Further, the liquid discharge passage 10 allows liquid to flow in the tangential direction of the inner wall 14c of the orifice ring 14, thereby obtaining a rectified swirl without disturbance along the inner wall of the orifice ring.
As a result, the flow rate increases and the separation particle size can be reduced, and the separation accuracy is improved.

  Furthermore, as shown in FIG. 12, since the liquid discharge passage 10 is formed in a curve, it is possible to obtain a rectified spiral without turbulence along the inner wall 14c of the orifice ring 14, resulting in an increase in the flow velocity. Separation particle size can be reduced and separation accuracy is improved.

  FIG. 12 (d) shows another embodiment of the liquid discharge passage 10, where the cross-sectional area of the inlet side 100 of the liquid discharge passage 10 formed in a curve is larger than the cross-sectional area of the outlet side 101, and the liquid is on the inlet side 100. Is gradually reduced from the outlet side 101 toward the outlet side 101, whereby the flow velocity from the liquid discharge passage 10 is increased, and the separation particle size can be reduced and the separation accuracy is improved.

  The orifice ring 14 of the embodiment of FIG. 13 includes an inner ring body 14a having an outlet side liquid discharge passage 10a and an outer ring body 14b having an inlet side liquid discharge passage 10b. In the inner ring body 14a and the outer ring body 14b, holding pieces 14b1 formed at both ends of the outer ring body 14b hold both ends of the inner ring body 14a, and the inner ring body 14a and the outer ring body 14b slide in the circumferential direction. It is possible to move.

  By sliding the inner ring body 10a and the outer ring body 10b in the circumferential direction, the restriction of the liquid discharge passage 10 changes depending on the degree of overlap between the outlet side liquid discharge passage 10a and the inlet side liquid discharge passage 10b. Thereby, the amount of liquid inflow through the liquid discharge passage 10 is variable, and the separation particle size can be easily changed.

  FIG. 13 (d) shows another embodiment of the liquid discharge passage 10, where the cross-sectional area of the inlet side 110 of the outlet-side liquid discharge passage 10 a formed in a curve is larger than the cross-sectional area of the outlet side 111, and the inlet side. The cross-sectional area of the inlet side 120 of the liquid discharge passage 10b is larger than the cross-sectional area of the outlet side 121, and the liquid is gradually squeezed from the inlet side to the outlet side, whereby the flow velocity from the liquid discharge passage 10 is increased and separated. The particle size can be reduced and the separation accuracy is improved.

  FIG. 13E shows another embodiment of the liquid discharge passage 10, which is configured in the same manner as FIG. 13D, but is a straight straight line parallel to the tangent line in the cross section orthogonal to the axial direction. The passage surfaces 10g11 and 10g12 and the curved passage surfaces 10g21 and 10g22 having convex curves are provided on the straight passage surface side. The straight passage surfaces 10g11 and 10g12 and the curved passage surfaces 10g21 and 10g22 increase the flow velocity from the liquid discharge passage 10 and enable the separation particle size to be reduced, thereby improving the separation accuracy.

The position and the number of the liquid discharge passages 10 are not particularly limited, and a structure in which the flow rate of liquid discharged from the hydraulic pressure chamber 12 to the introduction chamber 19 is preferable, and this structure is not particularly limited.
[Example]
(Comparative example)
A cyclonic centrifuge with a porous inlet shown in FIGS. 1 to 3 and a cyclone centrifuge with a single hole inlet shown in FIGS. 14 and 15 are used as comparative examples. A dispersion medium containing ion-exchanged water containing particles was used as a sample. The separation efficiency was measured by changing the flow rate of the sample powder.

  As a comparative example, a cyclone type centrifugal separator having a single-hole inlet shown in FIGS. 14 and 15 has a fluid outlet at the shaft core, a fluid inlet at a position displaced from the shaft core, and a fine object from the fluid inlet. Is supplied at a predetermined flow rate to generate a swirl, and in a centrifugal state, the fine object is moved to the outside to discharge the fluid from which the fine object has been separated, and the swirl is decelerated to remove the separated fine object. Settling.

  The results are shown in FIG.

  The measurement conditions shown in FIG. 16 are as follows.

Sample powder: Silica particles Dispersion medium: Ion exchange water Dispersion medium temperature T: 41 ° C
Dispersion medium flow rate Q: 600 l / h, 800 l / h, 1000 l / h
Dispersion medium concentration Cp: 0.5 wt%
In the measurement result shown in FIG. 16, even when the flow rate of the dispersion medium was changed, the particle diameter Dp could be separated only to about 10 μm.
(Example)
Separation processing was performed using the cyclone type centrifugal separator of the embodiment shown in FIGS. As a liquid containing fine substances, a dispersion medium of ion-exchanged water containing silica particles was used as a sample.

  The cyclone type centrifugal separator of this embodiment supplies a liquid containing fine substances from a liquid discharge passage to generate a vortex at a predetermined flow rate, moves the fine objects outward in a centrifugal state, and removes the fine substances from the liquid outflow passage. It is formed by discharging the separated fluid, decelerating the vortex and allowing the separated fine objects to settle, an orifice ring having two liquid discharge passages, and the periphery of the two liquid discharge passages. And a liquid introduction passage for introducing a liquid containing a fine substance into the hydraulic pressure chamber, and the liquid discharge passage is formed in the tangential direction of the inner wall of the orifice ring.

  The sample powder was separated using this cyclone type centrifugal separator, and the result is shown in FIG.

  The measurement conditions shown in FIG. 19 are as follows.

Sample powder: Silica particles Dispersion medium: Ion exchange water Dispersion medium temperature T: 40 ° C
Dispersion medium flow rate Q: 540 l / h
Dispersion medium concentration Cp: 0.5 wt%
Blow-down flow rate ratio Qb (ratio flowing out to the lower chamber): 15%
Under these measurement conditions, the relationship between the separation particle diameter and the separation efficiency was shown when there were two liquid discharge passages, the width of the liquid discharge passage was 1 mm, and the length was 6 mm. Thus, in the measurement result of the example shown in FIG. 19, the particle diameter Dp can be separated to about 1 μm, and in the measurement result of the comparative example shown in FIG. 16, the particle diameter Dp is separated as compared with about 10 μm. The performance could be improved.

  This cyclone centrifuge is used for filtering fine materials such as pharmaceuticals, chemicals, foods, and beverages, and for collecting fines such as cutting powder from automobiles, machine tools, and processing industries. Used for filtration of circulating water, wastewater, etc., for removal of fine substances such as semiconductors, bio, and other impurities, and for removal of fine substances such as washing water and solvents, etc. Is widely used for the separation and removal.

It is sectional drawing of a cyclone type centrifuge. It is a top view of a cyclone centrifuge. It is sectional drawing which follows the III-III line of FIG. It is sectional drawing of a cyclone type centrifuge. It is a top view of a cyclone centrifuge. It is sectional drawing which follows the VI-VI line of FIG. It is sectional drawing of a cyclone type centrifuge. It is a top view of a cyclone centrifuge. It is sectional drawing which follows the IX-IX line of FIG. It is a figure which shows embodiment of an orifice ring. It is a figure which shows embodiment of an orifice ring. It is a figure which shows embodiment of an orifice ring. It is a figure which shows embodiment of an orifice ring. It is sectional drawing of the cyclone type centrifuge of a comparative example. It is a top view of the cyclone type centrifuge of a comparative example. It is a figure which shows the separation efficiency of a comparative example. It is sectional drawing of the cyclone type centrifuge of an Example. It is a figure which shows the orifice ring of the cyclone type centrifuge of an Example. It is a figure which shows the separation efficiency of an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cyclone type centrifuge 3 Cyclone part 10 Liquid discharge passage 11 Liquid outflow passage 12 Hydraulic pressure chamber 13 Liquid introduction passage

Claims (11)

A liquid containing fine substances is supplied from the liquid discharge passage to generate a vortex at a predetermined flow rate, and the fine substance is moved outward in a centrifugal state to discharge the fluid that has separated the fine substance from the liquid outflow passage, and the vortex is decelerated. Equipped with a cyclone section that settles the separated fines,
The liquid discharge passage is arranged at a plurality of locations,
A hydraulic chamber formed in communication with the periphery of the liquid discharge passages at the plurality of locations;
A liquid introduction passage for introducing a liquid containing the fine substance into the hydraulic chamber;
Have
An introduction pipe portion having the liquid introduction passage;
An orifice ring that is disposed inside the introduction pipe portion and has the liquid discharge passage formed at a plurality of locations;
Have
A cyclone centrifugal apparatus characterized in that the hydraulic chamber is formed between the introduction pipe section and the orifice ring . A liquid containing fine substances is supplied from the liquid discharge passage to generate a vortex at a predetermined flow rate, and the fine substance is moved outward in a centrifugal state to discharge the fluid that has separated the fine substance from the liquid outflow passage, and the vortex is decelerated. A plurality of cyclone parts that settle the separated fine objects are arranged in parallel,
The liquid discharge passages are arranged at a plurality of locations in each of the cyclones,
The hydraulic chamber formed in communication with the plurality of liquid discharge passages;
A liquid introduction passage for introducing a liquid containing the fine substance into the hydraulic chamber;
An external discharge part that collects and discharges the liquid outflow passages of the respective cyclone parts;
Provided,
An introduction pipe portion having the liquid introduction passage;
An orifice ring disposed inside the introduction pipe portion and having the liquid discharge passage formed at a plurality of locations;
A cyclone centrifugal apparatus characterized in that the hydraulic chamber is formed between the introduction pipe section and the orifice ring . The cyclone centrifugal device according to claim 1 or 2 , wherein the liquid discharge passages are arranged at a plurality of symmetrical positions as viewed from the axial direction. The cyclone centrifugal apparatus according to any one of claims 1 to 3 , wherein the liquid discharge passages are arranged at equally spaced positions. It said liquid discharge passage, the cyclonic centrifugal separator according to any one of claims 1 to 4, characterized in that flowing the liquid in a tangential direction of the inner wall of the orifice ring. The cyclone centrifugal device according to any one of claims 1 to 5 , wherein the liquid discharge passage is formed in a curved shape. The cyclone centrifugal device according to any one of claims 1 to 6 , wherein the liquid discharge passage has a cross-sectional area on the inlet side larger than a cross-sectional area on the outlet side. Said liquid discharge passage, according to claim 7, wherein said having a tangent parallel straight linear path surface of the inner wall of the orifice ring, and a convex curved curve path surface to the straight path side Cyclone type centrifuge. A liquid inflow portion that is formed in the upper portion of the cyclone portion in the vertical direction and has an upper opening, and has the liquid discharge passage;
A lid that closes the opening of the liquid inflow portion and has the liquid outflow passage;
The cyclonic centrifugal device according to any one of claims 2 to 8 , wherein the orifice ring is detachably supported between the liquid inflow portion and the lid.   The cyclone centrifugal device according to claim 2, wherein the external discharge unit is arranged on a line different from an extension line of the liquid introduction passage.   The cyclone centrifugal apparatus according to claim 2, wherein the external discharge unit is disposed on an extension line of the liquid introduction passage.

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