Mixed liquid separation device

Abstract

The present invention provides a mixed liquid separation device capable of achieving a higher recovery rate than before. The device comprises a cylindrical outer member (1), a rod-shaped inner member (2) coaxially arranged in the outer member (1) and relatively rotatable, and a driving unit (3) for rotating the inner member, wherein the outer peripheral side of the inner member (2) comprises a spiral guide wall (21), and a specific substance is transported along the guide wall (21) and separated by relative rotation of the outer member (1) and the inner member (2). The distance between the spirally arranged guide walls 21, i.e., the valley width Vw (mm), is greater than 1.0, based on the width of the guide wall (21), i.e., the peak width Mw (mm), and the relationship with the outer diameter D (mm) is (Vw+Mw) / πD is greater than 0.01 and less than 0.27.

Description

Technical Field

[0001] The present invention relates to a mixed liquid separation device for separating a predetermined substance from a mixed liquid in which different types of components that are immiscible (Japanese: non-mixable) are mixed and used for cleaning, lubrication, etc. in factory equipment such as lathes. Background Art

[0002] In manufacturing industries such as mechanical processing, cooling liquids with industrial water as the main component are used for various purposes such as lubrication, cooling during processing, cleaning and degreasing after processing. These cooling liquids are added with various components such as cutting agents and cleaning agents according to the purpose of use. After use, the liquid is recovered in the form of drainage mixed with foreign matter such as chips and oil supplied for lubrication. Then, the recovered drainage is recycled after removing foreign matter. Various devices have been used in the past as equipment for such drainage treatment (for example, refer to patent documents 1 and 2).

[0003] In the prior art shown in the patent document, a spiral tube type liquid separation mechanism is adopted with the following structure: inside the cylindrical outer member, a rod-shaped inner member is coaxially arranged to rotate relative to the outer member, and a spiral guide wall provided on the outer periphery of the inner member is in sliding contact with the inner peripheral surface of the outer member. Then, during operation, the outer member and the inner member are relatively rotated while the lower part of the spiral tube is immersed in the mixed liquid of the separation object. Thus, the guide wall rotates while sliding contact with the inner peripheral surface of the outer member, and the separation object material such as oil floating on the liquid surface of the mixed liquid is transferred upward by the spiral surface of the guide wall and separated and recovered.

[0004] Patent Document 1: Japanese Patent Re-publication No. WO2005 / 038408

[0005] Patent Document 2: Japanese Patent Application Publication No. 2014-050775

[0006] However, although the existing mixed liquid separation device has high performance, it is required to reduce the operating volume of the device and extend its life by achieving higher performance. If the mixed liquid separation device does not work due to a malfunction, the coolant cannot exert its original effect, which may have a negative impact on other devices in a chain reaction, so it is required to be able to operate without problems for a long time. Summary of the invention

[0007] The present invention has been made in view of such problems, and an object of the present invention is to provide a mixed liquid separation device capable of achieving a higher recovery rate than conventional devices.

[0008] In order to solve the above problems, the inventors conducted in-depth research and found that the recovery speed can be improved by adopting a specific shape of the spiral guide wall provided on the outer periphery of the inner member, thereby completing the following invention. That is, the mixed liquid separation device of the present invention is a mixed liquid separation device for separating and extracting a specific substance from a mixed liquid of at least two immiscible liquid substances with different driven rotation characteristics, wherein it has:

[0009] The outer member is cylindrical and has a suction port at one end thereof for sucking in the mixed liquid and a discharge port at the other end thereof for discharging the separated specific substance;

[0010] an inner member in the shape of a rod, arranged coaxially with the outer member and relatively rotatable within the outer member; and

[0011] The driving unit causes the outer member and the inner member to rotate relative to each other.

[0012] The inner member has a spiral guide wall on its outer circumference, and the guide wall guides the specific substance from the one end to the other end through the relative rotation of the outer member and the inner member.

[0013] The specific substance is transported along the guide wall toward the other end portion by the relative rotation of the outer member and the inner member, thereby separating the specific substance.

[0014] Taking the width of the guide wall, i.e. the peak width Mw (mm), as a reference, the distance between the guide walls, i.e. the valley width Vw (mm), is greater than 1.0, and its relationship with the outer diameter D (mm) is (Vw+Mw) / πD, which is greater than 0.01 and less than 0.20.

[0015] (Vw+Mw) / πD is preferably 0.15 or less, and is also preferably 0.07 or more. The valley width Vw is preferably 6.3 mm or more.

[0016] The mixed liquid separation device of the present invention can achieve a higher recovery rate by having the above-mentioned structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram for explaining the position at which the peak width Mw of the guide wall in the mixed liquid separation device of the present invention is measured.

[0018] Figure 2 It is a schematic front view of the mixed liquid separation device of the present invention.

[0019] Figure 3 It is a partial enlarged front view of the mixed liquid separation device of the present invention.

[0020] Figure 4 This is a graph showing the (Vw+Mw) / πD dependency of the recovery rate of the mixed liquid separation device of this example.

[0021] Figure 5 This is a graph showing the Vw / Mw dependency of the recovery rate of the mixed liquid separation device of this example. DETAILED DESCRIPTION

[0022] The numerical range described in this specification can be set to any range using the value described in the specification as the upper limit or lower limit, and may include or exclude the upper limit and / or lower limit of the set range.

[0023] 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 immiscible substances with different driven rotation 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 with different driven rotation characteristics relative to the inner parts such as the guide wall described later. The amount recovered from the mixed liquid is affected by the driven rotation characteristics of the specific substance and the amount and ratio of the specific substance (Japanese: amount and ratio). As factors that affect the driven rotation characteristics, there are viscosity, affinity, etc. The side with higher viscosity and the side with higher affinity are difficult to fall off from the inner parts and are easy to drive and rotate. In particular, the level of viscosity has a greater impact on the ease of driving and rotating. Therefore, as a mixed liquid that can be separated by the mixed liquid separation device of the present invention, it is preferably a mixed liquid containing a liquid with lower viscosity and a liquid with higher viscosity. For example, water and oil, oils with different viscosities, etc. In particular, it is preferred to use oil with higher viscosity as a specific substance. As the oil with high viscosity, preferably, the oil with high viscosity of VG32 or above (VG46, VG68, VG100, VG150, etc.) In addition, the mixed liquid may be oil sludge or sediment sludge containing metal chips such as chips and cutting powder, and may also be water-soluble or water-insoluble liquid.

[0024] For example, the mixed liquid envisioned by the mixed liquid separation device of this embodiment can include coolant and oil mixed in the coolant. In particular, as a specific substance, oil with a high viscosity is envisioned. Therefore, the viscosity difference is very large compared to the coolant, and the speed at which the oil is recovered by driving the rotation becomes very high compared to the speed at which the coolant is recovered. The mixed liquid separation device of this embodiment can increase the recovery speed by having a structure described later.

[0025] Furthermore, the mixed liquid separation device of the present invention is composed of an outer member, an inner member, and a driving unit.

[0026] The outer member is cylindrical, has a suction port at one end thereof for sucking the mixed liquid, and has a discharge port at the other end thereof for discharging the separated specific substance. In addition, the inner member is coaxially arranged with the outer member, and is in the shape of a rod that can rotate relatively in the outer member.

[0027] The material of the outer member and the inner member is not particularly limited, but preferably is a material that is stable even if it is immersed in the mixed solution to be separated for a long time and contacts with the mixed solution. Therefore, its material needs to be appropriately selected according to the type of the mixed solution, for example, preferably metal, resin. In addition, the size of the outer member and the inner member depends on the type and separation amount of the mixed solution to be separated, so it is appropriately determined. In the axial length of the inner member, when the part above the liquid level is longer, although the separation speed can decrease, the separation accuracy can be improved.

[0028] The shape and size of the suction port of the outer member are not particularly limited as long as the mixed liquid can be sucked into the outer member. For example, it is preferably composed of an open end of a cylindrical member or an opening formed on the outer peripheral surface. The suction port is preferably in a state where the mixed liquid is immersed in the mixed liquid, and the mixed liquid is continuously sucked from the suction port by the driven rotational force relative to the outer member and the inner member. In addition, when the substance to be separated is a substance 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, then in the case where the axial direction of the mixed liquid separation device is set to intersect with the liquid surface, even if there is a change in the liquid surface, the opening is located near the liquid surface, and the mixed liquid including the substance floating on the liquid surface can be continuously sucked from the opening. In the case of an opening extending in the axial direction, it can also be a size that covers the entire axial direction of the outer member, for example, the range in the entire axial length where the changing liquid surface may exist can be set as the opening.

[0029] The form of the discharge port 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 composed of an open end of a cylindrical member or an opening formed on the outer peripheral surface. In particular, if the discharge port is composed of an opening opened on the outer peripheral surface of the outer member, the specific substance can be efficiently discharged to the outside of the device. The size and shape of the discharge port are not particularly limited, and a tubular member extending and protruding from the opening toward the outside of the device can also be provided to transport the specific substance to a recovery box, etc.

[0030] In addition, if the mixed liquid separation device has a discharge unit, the specific substance can be efficiently discharged to the outside of the device, wherein the discharge unit is composed of a specific substance receiving part that receives the specific substance discharged from a discharge port formed at the other end of the outer part, and a specific substance discharge part formed in the specific substance receiving part and discharges the specific substance accumulated in the specific substance receiving part.

[0031] As long as the specific substance receiving part can receive the specific substance discharged from the discharge port, its shape and size are not particularly limited, but for example, if there is a bottomed cylindrical part fixed coaxially with the outer part, it can prevent outflow from places other than the specific substance discharge part. In addition, cylindrical parts are easy to process and cheap, so they are easy to obtain. Moreover, in the case of using a plate-like body as a transfer unit in the discharge unit described later, the specific substance receiving part is preferably cylindrical. As described later, the plate-like body rotates relative to the specific substance receiving part, so if the specific substance receiving part is not cylindrical (for example, square), there may be places that the plate-like body cannot reach, resulting in specific substances that will not be discharged.

[0032] In addition, the form of the specific substance discharge part is not particularly limited as long as it can discharge the specific substance accumulated in the specific substance receiving part. For example, if an opening is formed in the specific substance receiving part as the specific substance discharge part, the specific substance accumulated in the specific substance receiving part is discharged to the outside of the device in sequence after reaching the opening. Therefore, for example, an opening can be provided at the bottom and the outer peripheral surface of the specific substance receiving part having a bottomed cylindrical part. In addition, when the device is set, if the specific substance discharge part is a discharge port opened in the direction of gravity, the specific substance accumulated in the specific substance receiving part is efficiently discharged by its own weight, so it is preferred. In addition, if the discharge port is open in the direction of gravity, it becomes difficult for specific substances, garbage, etc. to be retained on the side of the discharge port, so it is possible to reduce the blockage of the discharge port caused by the solidification of the specific substance at the discharge port, or the accumulation of garbage, sludge, etc.

[0033] In addition, the discharge unit is further preferably provided with a transfer unit for transferring the specific substance accumulated in the specific substance receiving part to the discharge port. As the transfer unit, it is preferably a plate-like body, which is fixed to the inner part and rotates relative to the specific substance receiving part by the relative rotation of the outer part and the inner part, so that the specific substance accumulated in the specific substance receiving part is pushed and concentrated to the specific substance discharge part. In the mixed liquid separation device of the present invention, the outer part and the inner part rotate relative to each other, so the plate-like body fixed to the inner part rotates relative to the specific substance receiving part and the discharge part formed on the outer part. By rotating the plate-like body relative to the specific substance receiving part, the specific substance accumulated in the specific substance receiving part can be pushed and concentrated to the discharge part by the plate-like body, and can be discharged efficiently. In addition, even if the specific substance is a substance that is easily solidified due to long-term placement, it will flow due to the plate-like body, so it can be prevented from solidifying under the state of being accumulated in the specific substance receiving part.

[0034] As long as the plate-like body has a surface that can push the specific substance, its size and quantity are not particularly limited. In addition, except for metal plates, resin plates with a certain degree of rigidity, etc., the plate-like body can also be an elastic body such as a rubber plate that elastically contacts the specific substance receiving portion.

[0035] In addition, the installation direction of the outer component and the inner component is not particularly limited, but it is preferred that the axial direction is the direction of action of gravity. If it is set so that the axial direction becomes the direction of action of gravity, a smaller installation location can be used. In addition, the rotation of the outer component and the inner component is not easy to be eccentric due to gravity. At this time, it is preferred that the suction port is located on the lower side and the discharge port is located on the upper side. In addition, in the case where the axial direction of the outer component and the inner component is set to have an angle with respect to the direction of action of gravity, if a support is used to support the two components so that they can rotate coaxially relative to each other, the rotation of the outer component and the inner component can be prevented from being eccentric due to gravity.

[0036] The driving unit causes the outer member and the inner member to rotate relative to each other. The rotating unit is preferably composed of a 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 mixed liquid. Furthermore, a bearing may be provided so that the rotation of the outer member and the inner member is not eccentric.

[0037] In addition, the mixed liquid separation device of the present invention rotates relatively at a rotation speed at which a specific substance in the mixed liquid can be driven to rotate by the outer component and the inner component. Moreover, the rotation speed depends on the size of the device, and also depends on the type of the mixed liquid and the processing capacity, and is preferably 10 to 200 rpm. The centrifugal force generated at this time is a weak centrifugal force of about 0.002 to 0.9G. Therefore, it is not a fast rotation to the extent that a strong centrifugal force is generated to push the substance toward the inner peripheral surface side of the outer component and away from the inner component. In addition, if the recovery capacity of the substance and the durability of the device are considered, it is preferably 30 to 120 rpm.

[0038] The outer peripheral side of the inner member has a spiral guide wall for guiding the specific substance from one end of the outer member to the other end by the relative rotation of the outer member and the inner member. Moreover, the specific substance is transported to the other end along the guide wall by the relative rotation of the outer member and the inner member, thereby separating the specific substance. If the axial distance between the parallel guide walls is set as the valley width Vw (mm), and the axial width of the guide wall is set as the peak width Mw (mm), then Vw / Mw is greater than 1.0.

[0039] Furthermore, when the outer diameter of the guide wall is set to D (mm), (Vw+Mw) / πD is greater than or equal to 0.01 and less than or equal to 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 is preferably any one of 0.15, 0.14, 0.135, 0.13, 0.125, and 0.12.

[0040] The valley width Vw is preferably 5.0 mm or more, more preferably 6.3 mm or more, and further preferably 9.0 mm or more. The upper limit of Vw is not particularly specified, and examples thereof include 13.0 mm, 10.5 mm, 10 mm, etc. As Mw, it is preferably 3.0 mm or less, more preferably 2.0 mm or less, and further preferably 1.2 mm or less. As D, the lower limit is preferably 10 mm, 15 mm, 20 mm, and the upper limit is preferably 150 mm, 100 mm, 50 mm. If D is large, the separation speed increases, and if D is small, the size of the mixed liquid separation device can be reduced.

[0041] In addition, the valley width Vw is the distance between the guide walls arranged in a spiral shape. The values ​​of Mw and Vw can be evaluated for the entire guide wall, but it is particularly preferred to evaluate them as the values ​​of the portion near the liquid surface and located above the liquid surface. Moreover, when the values ​​of Mw and Vw are not the same value within the entire evaluation range of the guide wall, they can be evaluated using the average value. In addition, when the average value of the value of Mw and Vw of any portion of more than 90% of the length of the axial evaluation range is regarded as 100%, it is preferred that it falls within the range of 50% to 150%, and more preferably falls within the range of 50% to 150% within the entire axial evaluation range. 70% and 90% can be used as the lower limit of the range, and 130% and 110% can be used as the upper limit.

[0042] The peak width Mw is measured as the width of the guide wall at a portion 0.1 mm from the outermost circumference (the point located in the outermost direction among various positions in the axial direction) ( Figure 1 ). For example, Figure 1 As shown in (a), when the cross-sectional shape of the guide wall is a rectangle, Mw is the same width as the width of the outermost peripheral portion, as shown in FIG. Figure 1 As shown in (b), when the cross-sectional shape of the guide wall is wavy, it is the width at a position moved 0.1 mm from the outermost circumference to the center side. Vw is the value measured at the position where Mw is measured. Therefore, the value obtained by subtracting Mw from the pitch P of the spiral constituting the guide wall is Vw.

[0043] The outer member and the inner member preferably have a property of relatively strongly driving and rotating a specific substance in the mixed liquid. For example, a substance that is easily physically or chemically attached to the outer member and the inner member is driven and rotated by the outer member and the inner member.

[0044] In addition, the shape of the outer part and the inner part is not particularly limited as long as at least one of the inner circumference of the outer part and the outer circumference of the inner part has a spiral guide wall. That is, it is preferred that the inner circumference of the outer part is cylindrical, and the inner part has a spiral guide wall on its outer circumference. As the inner part with a spiral guide wall on the outer circumference, in addition to the external threaded part, it can also be a spring or a wire rolled into a spiral shape. At this time, the specific substance is driven to rotate by the cylindrical inner circumference of the outer part and the guide wall (external threaded part) of the inner part due to its adhesion, friction, etc. In the case of wishing to further improve the driving rotation characteristics, the inner circumference of the outer part or the outer circumference of the inner part can also be set to a fluffy, brush-like concave and convex surface. In particular, powder bodies such as metal chips are easily attached to the concave and convex surface, so it is preferred. In addition, at least one of the inner circumference of the outer part and the outer circumference of the inner part can also be set to a hydrophilic or hydrophobic surface, or a surface with magnetic force.

[0045] Therefore, for the mixed liquid sucked from the suction port, the specific substance in the mixed liquid is transported to the other end along the guide wall due to the relative rotation of the outer part and the inner part. At this time, the substances other than the specific substance in the mixed liquid (hereinafter referred to as "other substances") are difficult to be driven and rotated by the outer part and the inner part. Therefore, even if other substances are sucked from the suction port together with the specific substance, they will be separated from the outer part and the inner part during the period when the specific substance is transported from one end of the outer part to the other end. In addition, even if a concave-convex surface is formed, 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 smoothly transported from one end of the outer part to the other end along the guide wall.

[0046] Furthermore, even if the mixed liquid is composed of liquids with a small difference in viscosity of the mixed liquid, it can be separated by adjusting the width of the gap between the outer member and the inner member and the rotation speed of the rotating unit. In addition, even if it is the same mixed liquid, by adjusting the width of the gap and the rotation speed of the rotating unit, the separation amount and the amount of other substances contained in the separated specific substance will change, and the processing capacity will also be different, so it is preferable to adjust according to the use of the separated specific substance.

[0047] For example, for a tank that recycles waste liquid recovered in a metal processing process, at least one mixed liquid separation device of the present invention can be provided. In addition, when the recovered specific substance also contains other substances, separation can also be performed using a mixed liquid separation device that changes the driving rotation characteristics of each component, the width of the gap between the components, the rotation speed and other conditions.

[0048] The mixed liquid separation device of the present invention is described in detail below based on the following embodiments. The drawings used in the following description are schematic diagrams, and their relative positions, sizes, etc. are not necessarily accurate.

[0049] use Figure 2 and 3 The mixed liquid separation device of this embodiment will be described. Figure 2 is a front view of the mixed liquid separation device of this embodiment, Figure 3 yes Figure 2 A partial enlarged view of .

[0050] The mixed liquid separation device of this embodiment is composed of an outer component 1 , an inner component 2 and a driving unit 3 .

[0051] The outer member 1 is composed of an outer tube body 10 and a connecting portion 15. The outer tube body 10 is a resin-made cylindrical pipe. A suction port 11 is formed on the outer peripheral surface of the outer tube body 10. The suction port 11 is a 180° opening formed by axially cutting from one end of the outer tube body 10. Moreover, the suction port 11 is divided by axial opening end faces 111, 113 extending axially and a circumferential opening end face 112. Here, when an opening is formed on the outer peripheral surface of a cylindrical member, the axial cutting is usually performed radially. However, the cutting surface 111 faces the direction that hinders the flow of the mixed liquid being sucked. Therefore, at the 180° opening, a thinned edge portion (not shown) is provided on one side of the mixed liquid being sucked. The edge portion is formed so that the axial opening end face 111 becomes an inclined surface inclined toward the inner peripheral surface side, so that the flow of the mixed liquid becomes smooth.

[0052] Furthermore, a discharge port 16 is connected to the other end of the outer tube body 10 .

[0053] The connection part 15 is made of resin like the outer cylinder body 10 and is cylindrical with a flange part 151 at one end. The bottom surface of the other end of the connection part 15 serves as a setting surface 150 when it is set in a mixed liquid tank or the like. The connection part 15 is shorter in the axial direction than the outer cylinder body 10, so the suction port 11 side of the outer cylinder body 10 protrudes from below the setting surface 150 of the connection part 15.

[0054] The inner member 2 is composed of a metal trapezoidal screw. The inner member 2 is coaxially arranged with the outer member 1 (outer cylinder body 10). At this time, the gap between the outer member 1 and the inner member 2 is arranged to be less than 1 mm. The outer peripheral side of the inner member 2 has two spiral guide walls 21, and the specific substance is transported along the guide walls 21 by the relative rotation of the outer member 1 and the inner member 2, thereby separating the specific substance. The distance between the guide walls 21, that is, the valley width Vw (mm), and the width of the guide wall 21, that is, the peak width Mw (mm) are limited.

[0055] The drive unit 3 is composed of a geared motor (not shown) and a housing 31 for accommodating the geared motor. The housing 31 has a flange 315 on the opening side, and the flange 315 and the flange 151 of the outer member 1 (connecting portion 15) are fixed by bolts 313. The geared motor 30 is connected to one end of the inner member 2 to drive the inner member 2 to rotate.

[0056] Furthermore, an inverter may be installed in the circuit for controlling the geared motor 30 to control the frequency of the motor and thereby set the rotation speed of the inner member 2 as desired.

[0057] 《Oil recovery measurement》

[0058] The recovery rate of a specific substance was evaluated using the mixed liquid separation device of the embodiment. In the mixed liquid separation device of the present invention, the recovery rate is expected to be improved by changing the shape of the inner component. Therefore, in this embodiment, the recovery rate rather than the separation rate is studied. It is not necessary to use a mixed liquid specifically for evaluating the recovery rate, so VG68 oil is used alone as a specific substance instead of the mixed liquid. Regarding the shape of the inner component, the test was carried out by changing it as shown in Table 1. The inner component rotated at 60 rpm, and the recovery amount of the specific substance every 10 minutes was evaluated.

[0059] The number of guide walls with the lead shown in Table 1 is set at the interval of the pitch. The peak width and valley width of the guide wall are also changed. The axial length of the inner part is 150 mm, and the specific substance is lifted from the liquid surface to a position of 100 mm and recovered. The diameter D of the inner part is set to 36 mm.

[0060] [Table 1]

[0061]

[0062] According to Table 1, the relationship between (Vw+Mw) / πD and recovery rate is studied. From the test examples 1, 6, 10, and 13 where the Vw / Mw value is large, it can be seen that if Figure 4 As shown, the recovery rate in the range of 0.075 to 0.133 is particularly high.

[0063] If the relationship between Vw / Mw is studied, then according to Figure 5 It is known that a high recovery rate is exhibited when Vw / Mw is 1.0 or more, and it is known that the recovery rate is almost constant even when Vw / Mw exceeds 3.0.

Claims

1. A mixed liquid separation device for separating and extracting a specific substance from a mixed liquid of at least two immiscible liquid substances having different driven rotational characteristics, characterized in that: have: The outer member is cylindrical and has a suction port at one end thereof for sucking in the mixed liquid and a discharge port at the other end thereof for discharging the separated specific substance; The inner member is in the shape of a rod, is coaxially arranged with the outer member, and is relatively rotatable within the outer member; as well as A driving unit causes the outer member and the inner member to rotate relative to each other. The inner member has a spiral guide wall on its outer circumference, and the guide wall guides the specific substance from the one end to the other end through the relative rotation of the outer member and the inner member. The specific substance is transported toward the other end along the guide wall by the relative rotation of the outer member and the inner member, thereby separating the specific substance. Taking the width of the guide wall, i.e. the peak width Mw, as a reference, the distance between the guide walls, i.e. the valley width Vw, is greater than 2.33 and less than 11.50, and its relationship with the outer diameter D is (Vw+Mw) / πD is greater than 0.07 and less than 0.

13. The units of the peak width Mw, the valley width Vw and the outer diameter D are all mm.

2. The mixed liquid separation device according to claim 1, characterized in that: The (Vw+Mw) / πD is greater than or equal to 0.

09.

3. The mixed liquid separation device according to claim 1 or 2, characterized in that: The valley width Vw is greater than or equal to 6.3 mm.

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