TWI797031B - Mixed liquid separation device - Google Patents

Abstract

[Problem] To provide a mixed liquid separation device capable of achieving a higher recovery rate than conventional ones. [Solution] It has a cylindrical outer member 1, a rod-shaped inner member 2 coaxially arranged in the outer member 1 and relatively rotatable, and a driving means 3 for rotating the inner member. The outer peripheral side of the inner member 2 has a spiral The guide wall 21 of the shape is separated by conveying the specific substance along the guide wall 21 through the relative rotation of the outer part 1 and the inner part 2. The distance between the guide walls 21 arranged in a spiral shape is the valley width Vw mm) is 1.0 or more based on the mountain width Mw (mm) of the guide wall 21 , and the relationship (Vw+Mw)/πD with the outer diameter D (mm) is 0.01 or more and 0.20 or less.

Description

Mixed liquid separation device

The present invention relates to a mixed liquid separation device for separating a specified substance from a mixed liquid in which different components are not mixed but are used for cleaning or lubricating in factory equipment such as machine tools.

In manufacturing industries such as mechanical processing, coolants mainly composed of industrial water are used for various purposes such as lubrication or cooling during processing, cleaning or degreasing after processing, etc. To these coolants, various components such as cutting agents and cleaning agents are added according to the purpose of use, and after use, they are recovered in the state of discharge liquid mixed with foreign matter such as cutting chips or oil components for lubrication. Then, the recovered effluent is recycled after removal of foreign matter. Various devices have been conventionally used as such facilities for effluent treatment (see, for example, Patent Documents 1 and 2).

In the prior art shown in this patent document, a rod-shaped inner member that rotates relative to the outer member is arranged coaxially inside the cylindrical outer member, and a helical guide wall provided on the outer periphery of the inner member slides into contact with the outer member. A helical tube type liquid separation mechanism with a structure on the inner peripheral surface of the outer member. Then, at the time of actuation, the outer member and the inner member are relatively rotated with the lower portion of the helical tube immersed in the mixture to be separated. Thereby, the guide wall rotates while sliding on the inner peripheral surface of the outer member, and the separation target substances such as oil components floating on the liquid surface of the mixed liquid are transferred upward through the spiral surface of the guide wall and separated and recovered.

"Patent Documents" "Patent Document 1": Japanese Publication No. WO2005/038408 "Patent Document 2": Japanese Patent Publication No. 2014-050775

By the way, although the conventional mixed liquid separation device has high performance, it is required to reduce the operating load of the device and increase the life of the device by achieving higher performance. When the mixed liquid separation device becomes inoperable due to failure, the coolant will not be able to exert its original effect, and the adverse effect may also affect other devices in a chain, so it is required to be able to operate without problems for a long time.

The present invention was made in view of such a problem, and it is a problem to be solved by providing a mixed liquid separation device capable of realizing a recovery rate higher than conventional ones.

As a result of intensive research aimed at solving the above-mentioned problems, the inventors of the present invention found that the recovery speed can be increased by adopting a specific shape for the helical guide wall provided on the outer periphery of the inner member, and thus completed the following invention. That is, the mixed liquid separation device of the present invention is a mixed liquid separation device that separates and takes out a specific substance from a mixed liquid of at least two non-mixed liquid substances that are associated with different rotation characteristics, and has: A cylindrical outer member having a suction port for sucking the mixed liquid at one end and a discharge port for discharging the separated specific substance at the other end, arranged coaxially with the outer member and inside the outer member A rod-shaped inner member capable of relative rotation, and a driving means for relatively rotating the outer member and the inner member, wherein the outer peripheral side of the inner member has the ability to transfer the specific substance from the aforementioned one end through the relative rotation of the outer member and the inner member. A guide wall in the shape of a spiral leading to the other end is separated by transporting the specific substance along the guide wall to the other end through the relative rotation of the outer member and the inner member. The valley width Vw (mm) of the distance between the walls is based on the mountain width Mw (mm) which is the width of the above-mentioned guide wall, and is 1.0 or more, and the relationship with the outer diameter D (mm) (Vw+Mw)/πD It is not less than 0.01 and not more than 0.20.

(Vw+Mw)/πD is preferably not more than 0.15, and more preferably not less than 0.07. The aforementioned valley width Vw is preferably 6.3 mm or more.

The mixed liquid separation device of the present invention can achieve a high recovery rate by having the above structure.

Embodiments of the mixed liquid separation device of the present invention will be described below. The numerical range described in this specification can be set as an arbitrary range using the value described in the specification as an upper limit or a lower limit, and the upper limit and/or the lower limit of the set range may or may not contain it.

The mixed liquid separation device of the present invention is a mixed liquid separation device for separating a specific substance from a mixed liquid composed of at least two unmixed substances having different rotational characteristics. The mixed liquid separation device of the present invention is a device for separating a specific substance from a mixed liquid of two or more substances having different joint rotation characteristics with respect to inner members such as guide walls described later. The amount recovered from the mixed solution is affected by the joint rotation characteristics of the specific substance, the amount/existence ratio of the specific substance, and the like. Factors that exert an influence on joint rotation characteristics include viscosity, affinity, and the like. Those with high viscosity and high affinity are less likely to fall off from the inner part and become easy to rotate together. In particular, the height of the viscosity greatly affects the easiness of joint rotation. Therefore, as the mixed liquid that can be separated by the mixed liquid separating device of the present invention, a mixed liquid including a liquid with low viscosity and a liquid with high viscosity is desired. For example, water and oil, oils with different viscosities, etc. In particular, it is preferable to use oil with high viscosity as a specific substance. As the oil with high viscosity, the oil with high viscosity above VG32 (VG46, VG68, VG100, VG150, etc.) is better. In addition, the mixed liquid may be sludge or sludge containing metal chips such as chips or cutting powder, or a water-soluble or water-insoluble liquid.

For example, the mixed liquid contemplated by the mixed liquid separation device of this embodiment includes coolant and oil mixed in the coolant. In particular, high-viscosity oil is conceivable as a specific substance. Therefore, the viscosity difference becomes very large compared with that of the coolant, and the recovery speed of the oil through joint rotation becomes very high compared with the recovery speed of the coolant. The mixed liquid separation device of this embodiment can increase the recovery speed by having the structure described later.

Moreover, the mixed liquid separation device of the present invention is composed of an outer member, an inner member and a driving means.

The outer member is cylindrical and has a suction port at one end for sucking the mixed liquid and a discharge port for discharging the separated specific substance at the other end. Furthermore, the inner member is arranged coaxially with the outer member and is in the shape of a rod that is relatively rotatable within the outer member.

The material of the outer member and the inner member is not particularly limited, but it is desirable to have a material that is stable even if it is immersed in the mixed solution to be separated for a long time or comes into contact with the mixed solution. Therefore, its material must be properly selected according to the type of the mixed liquid, but for example, it is preferably made of metal or resin. In addition, since the size of the outer member and the inner member depends on the type of the mixed liquid to be separated or the amount of separation, it may be appropriately determined. Among the lengths of the inner member in the axial direction, the part above the liquid level may cause a decrease in the separation speed, but the separation accuracy can be improved.

The shape and size of the suction port of the outer member are not particularly limited as long as it can suck the liquid mixture into the outer member. For example, it is preferable to have one of the open ends of the cylindrical member or the opening formed on the outer peripheral surface. It is preferable that the suction port continuously sucks the mixed liquid from the suction port through the combined rotational force with respect to the outer member and the inner member while being immersed in the mixed liquid. Furthermore, when the substance to be separated is one floating on the liquid surface, the opening is preferably an opening extending in the axial direction. If it is an opening extending in the axial direction, if it is installed so that the axial direction of the mixed liquid separator intersects with the liquid surface, even if there is a fluctuation in the liquid surface, the vicinity of the liquid surface will be located at the opening, so that the It becomes possible to continuously inhale the mixed liquid containing the substance floating on the liquid surface from the opening. In the case of making the opening extending in the axial direction, it can also be the size of the entire axial direction of the outer member. For example, in the total length of the axial direction, the range in which the liquid level that can fluctuate can be made to be Open your mouth.

The form of the outlet of the outer member is not particularly limited as long as it can discharge the separated specific substance to the outside of the outer member. For example, it is preferably formed from one of the opening ends of the cylindrical member or an opening formed on the outer peripheral surface. In particular, if the discharge port is formed of an opening opened on the outer peripheral surface of the outer member, a specific substance can be efficiently discharged out of the device. The size or shape of the outlet is not particularly limited, and a tubular member protruding from the opening toward the outside of the device may also be provided to transport specific substances to a recovery box or the like.

And, as long as there is a specific substance receiving part that receives the specific substance discharged from the discharge port formed on the other end part of the outer member, the specific substance discharge that discharges the specific substance formed in the specific substance receiving part and stagnated in the specific substance receiving part The mixed liquid separation device that is part of the discharge means can discharge specific substances to the outside of the device with high efficiency.

The shape or size of the specific substance receiving part is not particularly limited as long as it can accept the specific substance discharged from the discharge port. Outflow from places other than the discharge part. In addition, since the cylindrical member is easy to process and inexpensive, it is easy to acquire. Furthermore, when a plate-like body is used as the transfer means in the discharge means described later, the specific substance receiving part is preferably cylindrical. As described later, since the plate-shaped body rotates relative to the specific substance receiving part, if the specific substance receiving part is not cylindrical (such as a square), there will be places where the plate-shaped body cannot reach, and specific substances that cannot be discharged may occur. possibility.

In addition, as long as the specific substance discharge part can discharge the specific substance accumulated in the specific substance receiving part, its form is not particularly limited. For example, if an opening is formed in the specific substance receiving part as the specific substance discharge part, the specific substance remaining in the specific substance receiving part will reach the opening and be sequentially discharged out of the device. Therefore, for example, it is only necessary to provide the opening on the bottom or the outer peripheral surface of the specific substance receiving portion having a bottomed cylindrical portion. In addition, when installing the device, it is preferable that the specific substance discharge portion is a discharge port that opens in the direction of gravity, since the specific substance remaining in the specific substance receiving portion can be efficiently discharged by its own weight. In addition, if the discharge port is opened along the direction of gravity, specific substances or garbage will not easily stay on the side of the discharge port, so it is possible to reduce the occurrence of solidification and agglomeration of specific substances at the discharge port or retention of garbage or silt. Blockage of discharge outlet.

In addition, it is preferable that the discharge means further has transfer means for transferring the specific substance remaining in the specific substance receiving part to the discharge port. As the transfer means, a plate-shaped body that is fixed to the inner member and relatively rotates with the specific substance receiving portion through the relative rotation of the outer member and the inner member to push the specific substance remaining in the specific substance receiving portion to the specific substance discharge portion is good. In the mixed liquid separation device of the present invention, since the outer member and the inner member rotate relative to each other, the plate body fixed to the inner member rotates relative to the specific substance receiving portion or discharge portion formed on the outer member. By rotating the plate-shaped body relative to the specific-substance receiving part, the specific substance remaining in the specific-substance receiving part can be pushed by the plate-shaped body and concentrated in the discharge part, and can be efficiently discharged. Furthermore, even if the specific substance is easy to solidify due to standing for a long time, it can flow through the plate-shaped body, so that it can be prevented from being solidified while remaining in the specific substance receiving part.

As long as the plate-like system has a surface capable of pushing a specific substance, its size or number is not particularly limited. In addition, the plate-shaped body may be an elastic body such as a rubber plate that elastically contacts the specific substance receiving portion, in addition to a metal plate or a resin plate having a certain degree of rigidity.

In addition, the installation directions of the outer member and the inner member are not particularly limited, but the axial direction is preferably the direction in which gravity acts. If it is installed so that the axial direction becomes the acting direction of gravity, the installation space may be small. In addition, the rotation of the outer member and the inner member becomes less likely to be eccentric due to gravity. In this case, the suction port may be located on the lower side and the discharge port may be located on the upper side. In addition, when the axial direction of the outer member and the inner member is provided at an angle with respect to the direction of gravity, if a support is used to support the two members so that they can rotate coaxially relative to each other, the outer member and the inner member can be prevented. The rotation is eccentric due to gravity.

The driving means relatively rotates the outer member and the inner member. The means of rotation is preferably made by motor. In addition, a circuit for controlling the motor may be provided so that the rotation speed of the device can be changed according to the type of the liquid mixture. Furthermore, the bearings may be provided so that the rotations of the outer member and the inner member are not eccentric.

In addition, the mixed liquid separation device of the present invention relatively rotates at a rotational speed at which specific substances in the mixed liquid can rotate together with the outer member and the inner member. Furthermore, the rotational speed depends on the size of the device, the type of the mixed solution, or the processing capacity, but is preferably 10 to 200 rpm. The centrifugal force generated at this time is about 0.002-0.9 G weak. Therefore, there is no such fast rotation as to push the substance to the inner peripheral surface side of the outer member or to generate a strong centrifugal force away from the inner member. However, if the recycling capacity of the material or the durability of the device is considered, 30-120 rpm is the best.

The outer peripheral side of the inner member has a helical guide wall that guides the specific substance from one end of the outer member to the other end through the relative rotation of the outer member and the inner member. Moreover, the specific substance is separated by being transported to the other end along the guide wall through the relative rotation of the outer member and the inner member. If the distance in the axial direction between the side-by-side guide walls is set as the valley width Vw (mm), and the width of the guide walls in the axial direction is set as the mountain width Mw (mm), then Vw/Mw is 1.0 or more .

In addition, if the outer diameter of the guide wall is defined as D (mm), (Vw+Mw)/πD is not less than 0.01 and not more than 0.20. The lower limit of (Vw+Mw)/πD is preferably any one of 0.04, 0.05, 0.07, and 0.09, and the upper limit value is preferably any one of 0.15, 0.14, 0.135, 0.13, 0.125, and 0.12.

The valley width Vw is preferably at least 5.0 mm, more preferably at least 6.3 mm, and more preferably at least 9.0 mm. The upper limit of Vw is not particularly specified, but examples include 13.0 mm, 10.5 mm, and 10 mm. Mw is preferably at most 3.0 mm, more preferably at most 2.0 mm, more preferably at most 1.2 mm. The lower limit of D is 10 mm, 15 mm, and 20 mm, and the upper limit is preferably 150 mm, 100 mm, and 50 mm. If D is large, the separation speed can be increased, and if D is small, the size of the mixed liquid separation device can be reduced.

In addition, the valley width Vw is the distance between guide walls provided in a spiral shape. The values of Mw and Vw can be evaluated over the whole guide wall, and it is preferable to evaluate them in the form of the values of the portion located near and above the liquid surface. In addition, when the values of Mw and Vw are not the same value over the entire evaluation range of the guide wall, they can be evaluated by an average value. In addition, the values of Mw and Vw should preferably fall within the range of 50 to 150% when the average value is taken as 100% in any part of 90% or more of the length of the evaluation range in the axial direction. It is preferable that the whole of the range falls within the range of 50 to 150%. 70% and 90% can be used as the lower limit of this range, and 130% and 110% can be used as the upper limit.

The measurement of the mountain width Mw is the width of the part of the guide wall at 0.1 mm from the outermost circumference (the point located in the outermost direction among the respective positions in the axial direction) (Fig. 1). For example, as shown in Figure 1(a), when the cross-sectional shape of the guide wall is rectangular, Mw is the same width as that of the outermost peripheral part; as shown in Figure 1(b), in the guide When the cross-sectional shape of the wall is wavy, it is the width at the portion shifted from the outermost periphery to the center side by 0.1 mm. Vw is a value measured at the site where Mw was measured. Therefore, the value obtained by subtracting Mw from the pitch P of the helix constituting the guide wall is Vw.

It is preferable that the outer member and the inner member have strong joint rotation properties with respect to a specific substance in the mixed liquid. For example, substances that tend to be physically or chemically attached to the outer member and the inner member are rotated jointly by the outer member and the inner member.

Furthermore, the shape of the outer member and the inner member is not particularly limited as long as at least one of the inner peripheral side of the outer member and the outer peripheral side of the inner member has a shape of a spiral guide wall. That is, it is preferable that the inner peripheral side of the outer member is cylindrical and the inner member has a spiral guide wall on the outer peripheral side. As the inner member having the helical guide wall on the outer peripheral side, a spring or a helically wound wire may be used instead of the external thread. At this time, the specific substance is jointly rotated by the cylindrical inner peripheral surface of the outer member and the guide wall (external thread) of the inner member through its adhesive force or frictional force. When it is desired to further improve the joint rotation characteristics, the inner peripheral side of the outer member or the outer peripheral side of the inner member may be made into a raised or brush-like uneven surface. In particular, powders such as metal chips are preferable because they tend to adhere to uneven surfaces. Furthermore, at least one of the inner peripheral side of the outer member and the outer peripheral side of the inner member may be a hydrophilic or hydrophobic surface, or may be a magnetic surface.

Moreover, the mixed liquid sucked by the suction port transports the specific substance in the mixed liquid to the other end along the guide wall through the relative rotation of the outer member and the inner member. At this time, the substances other than the specified substances in the mixed liquid (hereinafter referred to as "other substances") are not easily rotated by the outer part and the inner part, even if other substances are inhaled from the suction port together with the specific substance, the specific substance itself During the transfer from one end of the outer part to the other, other substances will also be separated from the outer part and the inner part. Moreover, even in the case of forming a concave-convex surface, as long as the concave-convex surface is formed with an elastic material, the specific substance attached to the concave-convex surface can be scraped by the spiral guide wall, and the scraped specific substance can be passed from the outer member along the guide wall. One end to the other end is smoothly conveyed.

In addition, even if the mixed liquid is a liquid having a small difference in the viscosity of the mixed liquid, it can be separated by adjusting the width of the gap between the outer member and the inner member or the number of revolutions of the rotating means. In addition, even if it is the same mixed liquid, because the amount of separation or the amount of other substances contained in the separated specific substance will change by adjusting the width of the gap or the number of revolutions of the rotating means, etc., there will be differences in the processing capacity, so the separation After that, it can be adjusted according to the use of the specific substance.

In the mixed liquid separation device of the present invention, for example, at least one tank for recovering waste liquid recovered in a metal processing process may be provided. In addition, when other substances are contained in the recovered specific substance, it can also be separated using a mixed liquid separation device that changes conditions such as the joint rotation characteristics of each member, the width of the gap between the members, or the number of revolutions.

The mixed liquid separation device of the present invention will be described in detail below according to the following examples. The drawings used in the following description are schematic diagrams, and the relative positions, sizes, etc. are not necessarily strict.

The mixed liquid separation device of this embodiment will now be described using Figures 2 and 3. Fig. 2 is a front view of the mixed liquid separation device of this embodiment, and Fig. 3 is a partially enlarged view of Fig. 2 .

The mixed liquid separation device of this embodiment is composed of an outer part 1 , an inner part 2 and a driving means 3 .

The outer member 1 is composed of an outer cylinder body 10 and a connecting portion 15 . The outer cylinder body 10 is a resin-made cylindrical piping material. A suction port 11 is formed on the outer peripheral surface of the outer cylinder body 10 . The suction port 11 is a 180° opening formed by cutting one end of the outer cylinder body 10 along the axial direction. Furthermore, the suction port 11 is divided by the axial opening end surfaces 111 and 113 extending in the axial direction and the circumferential opening end surface 112 . Here, when an opening is formed on the outer peripheral surface of a cylindrical member, cutting in the axial direction is usually cutting in the radial direction. However, its cut surface 111 is oriented in a direction that hinders the flow of the inhaled mixed liquid. Therefore, at the 180° opening, a thinned edge is provided on the side where the mixed liquid is sucked in (figure omitted). The flow of the liquid mixture is smoothed by forming the edge portion such that the axial opening end surface 111 is inclined to the inclined surface on the inner peripheral surface side.

Furthermore, a discharge port 16 is connected to the other end portion of the outer cylinder body 10 .

The connecting portion 15 is made of the same resin as the outer cylinder body 10 and has a cylindrical shape having a flange portion 151 at one end. The bottom surface of the other end of the connecting portion 15 becomes the installation surface 150 when it is installed in a mixed liquid tank or the like. Since the connecting portion 15 is shorter than the outer cylinder body 10 in the axial direction, the suction port 11 side of the outer cylinder body 10 protrudes below the installation surface 150 of the connecting portion 15 .

The inner part 2 is made of metal trapezoidal screws. The inner member 2 is arranged coaxially with the outer member 1 (outer cylinder body 10 ). At this time, it is arranged so that the gap provided between the outer member 1 and the inner member 2 becomes 1 mm or less. The outer peripheral side of the inner part 2 has a spiral guide wall 21 , and the specific substance is separated by being transported along the guide wall 21 through the relative rotation of the outer part 1 and the inner part 2 . The valley width Vw (mm) which is the distance between the guide walls 21 and the mountain width Mw (mm) which is the width of the guide walls 21 are regulated.

The driving means 3 is formed by a geared motor (not shown) and a box 31 for accommodating the geared motor. The case 31 has a flange portion 315 on the opening side, and the flange portion 315 is fixed to the flange portion 151 of the outer member 1 (connection portion 15 ) through bolts 313 . The geared motor 30 is connected to one end of the inner part 2 and drives the inner part 2 in rotation.

Moreover, the circuit for controlling the geared motor 30 is equipped with an inverter, so that the frequency of the motor can be controlled, and the number of revolutions of the inner member 2 can be set arbitrarily.

"Oil recovery measurement"

The recovery rate of a specific substance was evaluated using the mixed liquid separation device of the example. In the mixed liquid separation device of the present invention, it is expected to improve the recovery speed by changing the shape of the inner parts. Therefore, in this example it was decided to explore the recovery rate rather than the separation rate. Since it is not necessary to use a mixed liquid in order to evaluate the recovery rate, VG68 oil, which is a specific substance, was used alone instead of the mixed liquid. The test was performed by changing the type of the inner member as shown in Table 1. The inner part was rotated at 60 rpm, and the recovery of specific substances per 10 minutes was evaluated.

The number of guide walls with the leads shown in Table 1 is set at intervals of pitches exactly equal to the number of lines. It also changes the mountain width and valley width of the guide wall. The axial length of the inner part is 150 mm, and it is collected in such a way that the specific substance is lifted up to 100 mm from the liquid surface. The diameter D of the inner part is made 36 mm.

[Table 1] n L(lead) mm P (pitch) mm Mw (mountain width) mm Vw (valley width) mm Vw/Mw diameter mm (Vw+Mw)/πD Productivity mL/10min Test example 1 1 6 6 1.2 4.8 4.00 36 0.0531 160.0 Test example 2 1 9 9 5.7 3.3 0.58 36 0.0796 65.9 Test example 3 1 9 9 4.2 4.8 1.14 36 0.0796 140.0 Test example 4 1 9 9 4.2 4.8 1.14 36 0.0796 150.0 Test example 5 1 9 9 2.7 6.3 2.33 36 0.0796 170.0 Test example 6 1 9 9 1.2 7.8 6.50 36 0.0796 180.0 Test Example 7 1 12 12 7.2 4.8 0.67 36 0.1061 120.0 Test example 8 1 12 12 7.2 4.8 0.67 36 0.1061 135.0 Test example 9 1 12 12 4.2 7.8 1.86 36 0.1061 120.0 Test Example 10 1 12 12 1.2 10.8 9.00 36 0.1061 190.0 Test Example 11 1 15 15 10.2 4.8 0.47 36 0.1326 80.0 Test example 12 1 15 15 8.7 6.3 0.72 36 0.1326 220.0 Test Example 13 1 15 15 1.2 13.8 11.50 36 0.1326 170.0 Test Example 14 1 18 18 10.2 7.8 0.76 36 0.1592 98.0 Test Example 15 1 twenty four twenty four 13.2 10.8 0.82 36 0.2122 73.0

The relationship between (Vw+Mw)/πD and recovery speed is discussed in Table 1. From Test Examples 1, 6, 10, and 13 where the value of Vw/Mw is large, as shown in FIG. 4 , the recovery rate is particularly high in the range of 0.075 to 0.133.

When examining the relationship of Vw/Mw, it can be seen from FIG. 5 that a high recovery rate is exhibited when Vw/Mw is 1.0 or more. In addition, it can be seen that even if it exceeds 3.0, the recovery rate becomes almost constant.

1: Outer parts 10: Outer cylinder body 11: Suction port 15: Connecting part 16: spit out 111,113: Axial opening end face 112: Peripheral opening end face 150: set surface 151: flange part 2: inner parts 21: guide wall 21a, 21b: guide wall width 3: Driving means 31: box 313: Bolt 315: Flange

<Fig. 1> is a schematic diagram illustrating the position of measuring the mountain width Mw of the guide wall in the mixed liquid separation device of the present invention.

<Fig. 2> is a schematic front view of the mixed liquid separation device of the present invention.

<Fig. 3> is a partial enlarged view of the front of the mixed liquid separation device of the present invention.

<FIG. 4> is a graph showing the (Vw+Mw)/πD dependence of the recovery rate in the mixed liquid separation device of this embodiment.

<FIG. 5> is a graph showing the Vw/Mw dependence of the recovery rate in the mixed liquid separation device of this embodiment.

1: Outer parts

10: Outer cylinder body

11: Suction port

15: Connecting part

16: spit out

111,113: Axial opening end face

112: Peripheral opening end face

150: set surface

151: flange part

2: inner parts

21: guide wall

3: Driving means

31: box

313: Bolt

315: Flange

Claims (3)

A mixed liquid separation device, which is a mixed liquid separation device that separates and takes out a specific substance from a mixed liquid of at least two non-mixed liquid substances that are associated with different rotation characteristics, and has: a cylindrical shape and at one end thereof An outer member having a suction port for sucking in the mixed solution and a discharge port for discharging the separated specific substance at the other end, and a rod-shaped inner side arranged coaxially with the outer member and capable of relative rotation within the outer member component, and a driving means for relatively rotating the aforementioned outer component and the aforementioned inner component, and the outer peripheral side of the aforementioned inner component has a function of guiding the specific substance from the aforementioned one end to the aforementioned other end through the relative rotation of the outer component and the inner component A guide wall in a spiral shape is separated by transporting the specific substance along the guide wall to the other end through the relative rotation of the outer member and the inner member, which is the valley width of the distance between the guide walls Vw (mm) is 2.33 to 11.50 based on the mountain width Mw (mm), which is the width of the guide wall, and the relationship with the outer diameter D (mm) (Vw+Mw)/πD is 0.07 or more And below 0.13. The mixed liquid separation device according to claim 1, wherein the (Vw+Mw)/πD is 0.09 or more. The mixed liquid separation device according to claim 1 or 2, wherein the valley width Vw is greater than or equal to 6.3 mm.

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