JP5259546B2 - Solid-liquid separator - Google Patents

Description

  The present invention relates to a solid-liquid separator that separates and removes impurities from raw water.

  As an example of the water treatment process, a solid-liquid separation process such as gravity sedimentation, coagulation sedimentation, or pressurized flotation is used.

  In gravity sedimentation or coagulation sedimentation, raw water flows into the sedimentation tank, and the impurities that have a higher specific gravity than water are settled using the difference in specific gravity between the impurities to be separated and the water contained in the raw water. By using as the treated water, impurities and treated water are separated from the raw water. In this case, the sedimentation speed varies depending on the specific gravity and size of the impurities. For example, in the case of impurities with a slow sedimentation rate, the sedimentation rate can be improved by increasing the sedimentation rate by increasing the volume of the sedimentation tank, or by increasing the sedimentation efficiency using an inclined pipe or inclined plate. ing. On the other hand, even if the sedimentation efficiency is increased by using an inclined tube or an inclined plate as described above, a residence time of 1 hour or more is still required in the sedimentation tank, and not only there is a limit to shortening the residence time, There is also a problem with the size of the sedimentation tank.

  In addition, in the case of pressurized levitation, if there is levitation such as solid substances or fats and oils where the specific gravity of impurities is small, fine bubbles are generated by injecting air into the circulating water of the separation liquid and flowing it into the separation tank The impurities and the treated water are separated from the raw water by adhering to the impurities and floating and separating them. In this pressurized levitation, the rising speed of the impurities with bubbles attached is at most 200 mm / min. Therefore, there is a problem that the processing time becomes long even when the pressure is lifted.

  As described above, in order to shorten the processing speed which has been a problem in conventional weight settling and pressure flotation, for example, Patent Document 1 discloses that raw water is swirled in a container and impurities are centrifuged using centrifugal force. An apparatus is described.

Japanese Patent Laid-Open No. 11-333320

  However, in the conventional solid-liquid separator, hard solids such as sand particles are vigorously brought into fluid contact with the high-speed water flow, so that the inner wall of the hydrocyclone is significantly worn and reduced by erosion, The hydrocyclone needs to be repaired or replaced in a relatively short period of time, and the work for repairing or replacing this wear-damaged part requires a lot of labor and cost, resulting in an increase in maintenance costs. It was.

  The present invention has been made to solve the above problems, and provides a long-life solid-liquid separation device that can easily remove and replace a wear-damaged portion of a hydrocyclone and reduce maintenance costs. The purpose is to do.

(1) A solid-liquid separation device according to the present invention includes a liquid cyclone that precipitates solid impurity particles contained in raw water using centrifugal force when the raw water containing solid impurity particles is swirled, and an upper portion of the liquid cyclone. And an inflow pipe for flowing the raw water into the upper part of the hydrocyclone so that the raw water becomes a swirl flow, and an impurity connected to the lower part of the hydrocyclone and recovering the settled solid impurity particles from the lower part of the hydrocyclone A collection unit, an obstacle that prevents the collected solid impurity particles from returning from the impurity collection unit toward the hydrocyclone, and a solid impurity particle that has settled and is connected to an upper part of the hydrocyclone, is added to the impurity collection unit. An outflow pipe for allowing the treated water after the recovery to flow out from the liquid cyclone, and the liquid cyclone so as to cover an inner wall of the liquid cyclone Removably attached to each part therein, and having a resin color adjacent layers are different, and two or more layers of wear resistant member made of synthetic rubber or metallic material.

In the present invention, since the wear-resistant member has a structure that can be easily detached from the hydrocyclone body, the wear-resistant member damaged by a simple operation can be replaced with a new one.
According to the present invention, both the cylindrical part of the upper part of the cyclone where raw water flows from the inflow pipe and the funnel part of the lower part of the cyclone that discharges solid impurity particles (sand particles, metal powder, flocs, etc.) to the impurity collecting part Therefore, the wear damage amount of the wear-resistant member is larger than that of other parts, and a different color layer laminated to two or more layers having different colors of adjacent layers is adopted as the wear-resistant member of these parts. Thus, there is a merit that the progress degree of wear damage can be easily detected visually by monitoring that the surface layer is peeled off and a base layer having a different color appears. Two or more different color layers may be made of different materials or the same material.

  (2) In the invention of (1), the hydrocyclone includes a cylindrical part into which raw water flows from the inflow pipe, a conical part connected to the lower part of the cylindrical part, and a funnel part connected to the lower part of the conical part And a lid that closes the upper opening of the cylindrical portion and through which the outflow pipe penetrates. The wear-resistant member includes a cylindrical wear-resistant member corresponding to the inner surface shape of the cylindrical portion, a conical wear-resistant member corresponding to the inner surface shape of the conical portion, and the inner surface of the funnel portion. A funnel-type wear-resistant member corresponding to the shape, and a flat plate-type wear-resistant member with a central cylinder corresponding to the inner surface shape of the lid can be provided. In this case, it is preferable that the cylindrical portion, the conical portion, and the funnel portion are divided by a plane intersecting the axis of the hydrocyclone, and are connected to each other by a flange joint on the divided surface.

  According to the present invention, the wear-resistant member can be removed from the inside of the hydrocyclone only by performing a simple operation of releasing the flange joint. That is, the cylindrical wear-resistant member is disposed on the inner surface of the cylindrical portion of the hydrocyclone (FIG. 4), and the conical wear-resistant member is disposed on the inner surface of the conical portion of the hydrocyclone (FIG. 5). Since the shape of the member conforms to the inner surface of the hydrocyclone funnel (Fig. 6) and the flat-plate wear-resistant member with a central cylinder conforms to the inner surface of the hydrocyclone lid (Fig. 3), the removal work Not only can the installation work be performed quickly and smoothly, the work can be completed in a relatively short time, and maintenance costs can be greatly reduced.

  (3) In the invention of (1), the liquid cyclone closes an upper opening when the pair of left and right longitudinally divided housing assemblies divided in an axial symmetry and the pair of left and right longitudinally divided housing assemblies are combined, And a lid through which the outflow tube passes. The wear-resistant member may have a wear-resistant member having a shape corresponding to each of the inner surfaces of the pair of left and right vertically divided housing assemblies. In this case, it is preferable that the vertically divided housing assembly is divided by a plane parallel to the axis of the hydrocyclone, and is connected to each other by hinge joints on the divided surface (FIG. 9).

  According to the present invention, the wear-resistant member can be removed from the inside of the hydrocyclone only by performing a simple operation of releasing the hinge joint.

  According to the present invention, the amount of wear damage can be easily detected visually, and there is an advantage that the degree of progress of wear damage can be more easily grasped than the invention of (4).

(4) In the inventions of (1) to (3) , the wear-resistant member is a flange having a sealing function for preventing liquid leakage from a flange joint that connects the cylindrical portion, the conical portion, the funnel portion, and the lid to each other. It is preferable to have.

  According to the present invention, only one operation of exchanging the wear-resistant member can not only update the wear-damaged portion of the hydrocyclone, but also update the deteriorated portion of the liquid leakage prevention seal function. The effect is obtained.

  ADVANTAGE OF THE INVENTION According to this invention, the solid-liquid separation apparatus which can simplify the removal | desorption at the time of a maintenance check, can reduce a maintenance cost, and can aim at lifetime extension is provided.

The internal perspective sectional drawing which shows the solid-liquid separator of this invention. The block exploded view showing the hydrocyclone concerning the embodiment of the present invention. (A) is a perspective view which shows the abrasion-resistant member for lid | covers, (b) is a partial sectional side view which shows the lid | cover with an outflow pipe | tube with which the abrasion-resistant member was mounted | worn. (A) is a perspective view which shows the abrasion-resistant member for cylindrical parts, (b) is a fragmentary sectional side view which shows the cylindrical part which mounted | weared with the abrasion-resistant member. (A) is a perspective view which shows the wear-resistant member for cone parts, (b) is a fragmentary sectional side view which shows the cone part equipped with the wear-resistant member. (A) is a perspective view which shows the abrasion-resistant member for funnel parts, (b) is a fragmentary sectional side view which shows the funnel part equipped with the abrasion-resistant member. (A) is the elements on larger scale which show the flange of a funnel part, and the flange of an impurity collection | recovery part, (b) is a perspective view which shows the obstruction attached to the connection part of a funnel part / impurity collection part, a holding | maintenance part, and a sealing member. Sectional drawing of an abrasion-resistant member. The block exploded view which shows the hydrocyclone which concerns on other embodiment.

  Hereinafter, various modes for carrying out the present invention will be described with reference to the accompanying drawings.

(First embodiment)
First, a first embodiment of the present invention will be described with reference to FIGS.

The solid-liquid separator 1 is a process in which raw water containing solid impurity particles is introduced, and solid impurity particles (sand particles , metal powder, floc, etc.) are separated from the raw water by a centrifugal separation action utilizing a specific gravity difference to reduce solid impurity particles . A water treatment device for producing water. Among the solid impurity particles , the metal powder and sand particles have a specific gravity of about 2 to 10 and a diameter of about several millimeters to several micrometers. The floc has a specific gravity slightly larger than 1 and a diameter of about several millimeters to several tens of micrometers.

  As shown in FIG. 1, the solid-liquid separation device 1 according to the first embodiment includes a liquid cyclone 11, an inflow pipe 10 for flowing raw water into the liquid cyclone 11, an obstacle 16, an impurity recovery unit 18, An outflow pipe 20 through which treated water flows out from the hydrocyclone 11 and wear-resistant members 32, 33, 34, and 35 are provided.

  The hydrocyclone 11 is composed of a lid 15, a cylindrical portion 12, a conical portion 13 and a funnel portion 14 in order from the top, and these members 12 to 15 are assembled by connecting them in a fluid-tight manner with flange joints having a sealing property. It is formed as a vertically long casing that decreases in diameter as it moves downward. The cylindrical portion 12 has the largest inner diameter among the liquid cyclones 11, the inflow pipe 10 communicates with the side peripheral portion, and the lid 15 is covered on the upper opening. The inflow pipe 10 extends outward along a tangent line in contact with the inner peripheral surface of the cylindrical portion 12. The conical portion 13 has a large inner diameter at the top and gradually decreases as it moves downward, and is connected to the lower portion of the cylindrical portion 12 by a flange joint. The funnel portion 14 is formed by combining the upper half of the conical shape and the lower half of the cylindrical shape so as to form a funnel shape as a whole, and is connected to the lower portion of the conical portion 13 by a flange joint. . The lid 15 closes the upper opening of the cylindrical portion 12, and the outflow pipe 20 penetrates up and down in the center.

In such a hydrocyclone 11, raw water flows into the cylindrical portion 12 from the inflow pipe 10, and the direction of the flow is changed along the inner peripheral wall of the cylindrical portion 12 to form a swirling flow. Solid impurity particles such as floc having a specific gravity greater than that of water gather at the center of the vortex while descending while swirling along, and are further sucked into a narrow flow path narrowed by the funnel portion 12. On the other hand, the treated water after the solid impurity particles are separated is sent to the next process through the upper outlet pipe 20.

The impurity recovery part 18 is connected to the funnel part 14 at the lower part of the liquid cyclone by a flange joint, and recovers the settled solid impurity particles from the liquid cyclone 11. A discharge line 21 is connected to the bottom of the impurity recovery unit 18 so that the solid impurity particles recovered by opening the discharge valve 22 are discharged from the impurity recovery unit 18 to a reuse processing apparatus (not shown).

  As shown in FIG. 2, the wear-resistant members 32 to 35 are detachably attached to the respective parts 12 to 15 of the liquid cyclone 11 so as to cover the entire inner wall of the liquid cyclone 11. For example, as shown in FIG. 3B, a flat plate type wear-resistant member 35 with a central cylinder is attached along the inner surface shape of the lid 15, and the inner surface of the lid 15 and the outer peripheral surface of the outflow pipe 20 passing therethrough. Are covered with a wear-resistant member 35. As shown in FIG. 3A, the flat wear-resistant member 35 with a central cylinder includes a disk portion 35a corresponding to the inner surface shape of the lid 15 and a central cylinder corresponding to the outer peripheral surface shape of the outflow pipe 20. A portion 35b and a flange portion 35f serving as a seal of the flange joint are provided. As shown in FIG. 1, the flange portion 35f of the wear resistant member is sandwiched between the flange 15f of the lid and the flange 12f of the cylindrical portion, and the joint is liquid-tight so that water does not leak from the inside of the hydrocyclone 11. It seals.

  Next, the cylindrical wear-resistant member 32 will be described with reference to FIG.

  As shown in FIG. 4B, a cylindrical wear resistant member 32 is attached along the inner surface shape of the cylindrical portion 12, and the inner surface of the cylindrical portion 12 is covered with the wear resistant member 32. As shown in FIG. 4A, the cylindrical wear-resistant member 32 is formed on a cylindrical portion 32a corresponding to the inner surface shape of the cylindrical portion 12 and an end portion on one side of the cylindrical portion 32a. And a flange portion 32f serving as a seal of the joint. As shown in FIG. 1, the wear-resistant member flange portion 32 f is sandwiched between the lid flange 15 f and the cylindrical flange 12 f so that the joint is liquid-tight so that water does not leak from the inside of the hydrocyclone 11. It seals.

  Next, the conical wear-resistant member 33 will be described with reference to FIG.

  As shown in FIG. 5B, a conical wear-resistant member 33 is attached along the shape of the inner surface of the cone portion 13, and the inner surface of the cone portion 13 is covered with the wear-resistant member 33. As shown in FIG. 5A, the conical wear-resistant member 33 is formed at a conical portion 33a corresponding to the inner shape of the conical portion 13 and an end portion on one side of the conical portion 33a. And a flange portion 33f serving as a seal of the joint. As shown in FIG. 1, the flange portion 33 f of the wear-resistant member is sandwiched between the flange portion 12 f of the cylindrical portion and the flange portion 13 f of the conical portion, and prevents the water from leaking from the inside of the hydrocyclone 11. It seals tightly.

  Next, the funnel-type wear-resistant member 34 will be described with reference to FIG.

  As shown in FIG. 6B, a funnel-type wear-resistant member 34 is attached along the inner surface shape of the funnel portion 14, and the inner surface of the funnel portion 14 is covered with the wear-resistant member 34. As shown in FIG. 6A, the funnel-type wear-resistant member 34 has a conical portion corresponding to the inner surface shape of the upper half portion of the funnel portion 14 and an inner surface shape of the lower half portion of the funnel portion 14. A corresponding cylindrical portion and a flange portion 34f formed at the upper end portion of the conical portion and serving as a seal of the flange joint are provided. As shown in FIG. 1, the flange portion 34 f of the wear-resistant member is sandwiched between the flange portion 13 f of the conical portion and the flange portion 14 f of the funnel portion, and a joint is provided so that water does not leak from the inside of the hydrocyclone 11. It is a liquid-tight seal.

  Next, the obstacle 16 will be described with reference to FIG.

The obstacle 16 is attached to an appropriate flow path between the impurity recovery part 18 and the funnel part 14 and has a role of preventing the recovered solid impurity particles from returning from the impurity recovery part 18 toward the liquid cyclone 11. Is. As long as the flow path is between the impurity recovery part 18 and the funnel part 14, the obstacle 16 may be attached at any position. In the apparatus of this embodiment, as shown in FIG. 7 (a), the flange portion 14f of the funnel portion and the flange portion 18f of the impurity recovery portion are combined to form a flange joint, and FIG. As shown, a seal member 19 having an obstacle 16 is inserted between both flange portions 14f and 18f. That is, the obstacle 16 is disposed at the center of the flow path of the connection portion that fastens the flange portions 14f and 18f in a state where the obstacle 16 is held by the seal member 19 by a plurality of holding portions 17 made of wires or the like. Various obstacles such as a cone, a disk, a cylinder, a triangular pyramid, a quadrangular pyramid, and a rectangular plate can be used as the obstacle 16. Although the thickness of the obstacle 16 is not limited, it is preferably determined according to the pressure applied to the raw water, the holding force of the holding unit 17 and the like because it is easily damaged by the pressure applied to the raw water if it is too thin. .

A part of the raw water is also supplied to the impurity recovery unit 18 together with the solid impurity particles to be recovered. At this time, in the conventional apparatus, there is a problem that the solid impurity particles collected in the impurity collecting unit 18 flows and rolls up inside the impurity collecting unit 18 due to the movement of the raw water and is remixed in the raw water of the liquid cyclone 11. However, in the apparatus 1 of the present embodiment, as shown in FIG. 1, since the obstacle 16 is provided between the funnel portion 14 of the hydrocyclone and the impurity recovery portion 18, it is recovered by the impurity recovery portion 18. The solid impurity particles can be prevented from rolling up and being mixed again in the raw water of the hydrocyclone 11. In particular, since the solid impurity particles are often rolled up in the vicinity of the central axis of the swirling flow generated in the raw water, the provision of the obstacle 16 in the vicinity of the central axis of the swirling flow is effective in preventing re-mixing of the solid impurity particles. It is.

  According to the present invention, the wear-resistant member can be removed from the inside of the hydrocyclone only by performing a simple operation of releasing the flange joint. That is, the cylindrical wear-resistant member is disposed on the inner surface of the cylindrical portion of the hydrocyclone (FIG. 4), and the conical wear-resistant member is disposed on the inner surface of the conical portion of the hydrocyclone (FIG. 5). Since the shape of the member conforms to the inner surface of the hydrocyclone funnel (Fig. 6) and the flat-plate wear-resistant member with a central cylinder conforms to the inner surface of the hydrocyclone lid (Fig. 3), the removal work Not only can the installation work be performed quickly and smoothly, the work can be completed in a relatively short time, and maintenance costs can be greatly reduced.

  Next, the wear resistant member will be described in detail with reference to FIG.

  The inner wall of the hydrocyclone container, which is a large one, has a solid fluid such as sand particles with a diameter of several millimeters, and is in violent fluid contact with a high-speed water flow. For this reason, in the conventional apparatus, the life of the hydrocyclone is relatively short, which is a major factor for increasing the maintenance cost. Incidentally, the velocity of the water flow near the inner wall of the hydrocyclone is in the range of 2-6 m / sec under typical process conditions, in the range of 6-10 m / sec under somewhat severe process conditions, and 10 m under the most severe process conditions. / Sec is exceeded. Therefore, the role of the wear resistant member used in the device of the present invention is important.

  As the material of the wear-resistant member, various resins, synthetic rubbers, or metal materials can be used depending on the properties of the solid suspended in the liquid to be treated. When the resin is used for the wear resistant member, it is preferable to use a fluorine resin such as polytetrafluoroethylene (PTFE), a polyamide resin such as polyamide or polyamideimide, a polybutylene resin such as polybutylene, or the like. When synthetic rubber is used for wear-resistant members, nitrile butadiene rubber such as acrylonitrile butadiene rubber (NBR), styrene butadiene rubber such as styrene butadiene rubber (SBR), and urethane rubber such as urethane rubber. Etc. are preferably used. When a metal material is used for the wear resistant member, it is preferable to use various metal materials having both corrosion resistance and wear resistance, such as low alloy steel and stainless steel.

  The wear-resistant member is not limited to a single member made of a single material, and can be manufactured by combining a plurality of layers. For example, as shown in FIG. 8, a wear resistant member 35 having a three-layer structure in which a first layer 34a, a second layer 34b, and a third layer 34c are laminated and bonded can be used. These three layers 34a to 34c can be variously combined with different thicknesses, materials, and colors. For example, the first layer 34a can be the thickest, the second layer 34b can be the thinnest, and the third layer 34c can be an intermediate thickness. Further, for example, the first layer 34a and the third layer 34c can be made of acrylonitrile butadiene rubber (NBR), and the second layer 34b can be made of urethane rubber. Further, for example, the first layer 34a can be colored yellow, the second layer 34b can be colored red, and the third layer 34c can be colored white.

According to the present invention, both the upper part of the cyclone where raw water flows from the inflow pipe and the lower part of the cyclone which discharges solid impurity particles (floc) to the impurity recovery part are parts with significant wear damage. The wear damage amount of the adhesive member is large, and by adopting a laminate of two or more layers as the wear resistant member in these parts, it is possible to monitor the surface layer by peeling off and monitoring the appearance of the underlayer. There is an advantage that the progress of damage can be detected. In particular, by providing different layers on the wear-resistant member, there is an advantage that the amount of wear damage can be easily detected visually and the progress of wear damage can be more easily grasped.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIG. In addition, description of the part which this embodiment is in common with said embodiment is abbreviate | omitted.

  The solid-liquid separation device of this embodiment includes a pair of left and right vertically divided housing assemblies 11a and 11b obtained by vertically dividing the main body of the liquid cyclone 11A, and a plurality of sealing properties that connect these vertically divided housing assemblies 11a and 11b so as to be openable and closable. Hinge joint 28 and a wear-resistant member 36 corresponding to the inner surface shape of the vertically divided housing assemblies 11a and 11b. The pair of left and right longitudinally divided housing assemblies 11a and 11b are equally divided axially symmetrically along a plane parallel to the axis of the hydrocyclone 11A. The hinge joint 28 fastens and releases the two joint surfaces of the pair of left and right longitudinally divided housing assemblies 11a and 11b (only one on the front side is shown in the figure, but another hinge joint exists on the back side). Is.

  The wear-resistant member 36 is formed by integrally forming a shape corresponding to the inner surface shape of the vertically divided housing assemblies 11a and 11b, that is, a half cylindrical portion, a half conical portion, and a half funnel portion. Also in this embodiment, the wear-resistant member 36 can be formed of a plurality of layers as described above.

  According to the present embodiment, the wearable member can be easily removed from the inside of the hydrocyclone by opening the longitudinally divided housing assemblies 11a and 11b only by performing a simple operation of releasing the hinge joint. In addition, the wear-resistant member can be replaced simply by mounting the wear-resistant member inside the hydrocyclone, closing the longitudinally divided casing assemblies 11a and 11b, and returning the hinge joint.

DESCRIPTION OF SYMBOLS 1 ... Solid-liquid separator, 10 ... Inflow pipe,
11, 11A ... liquid cyclone,
11a, 11b ... Vertical division housing assembly,
12 ... cylindrical part, 13 ... conical part, 14 ... funnel part, 15 ... lid,
16 ... Obstacle, 17 ... Holding part, 18 ... Impurity recovery part,
12f, 13f, 14f, 15f, 18f ... flange, 19 ... seal member,
20 ... Outflow pipe, 21 ... Discharge line, 22 ... Valve, 28 ... Hinge joint,
32, 33, 34, 35, 36 ... wear-resistant members,
32a, 33a, 34a, 35a, 36a ... main body,
32f, 33f, 34f, 35f, 36f ... Flange.

Claims (4)

A liquid cyclone that sediments solid impurity particles contained in raw water using centrifugal force when swirling raw water containing solid impurity particles;
An inflow pipe that is connected to the upper part of the hydrocyclone and flows the raw water into the upper part of the hydrocyclone so that the raw water becomes a swirling flow;
An impurity recovery unit connected to the lower part of the hydrocyclone and recovering the settled solid impurity particles from the lower part of the hydrocyclone;
An obstruction that prevents the recovered solid impurity particles from returning from the impurity recovery part toward the hydrocyclone;
An outflow pipe connected to the upper part of the hydrocyclone and for allowing the treated water after the settled solid impurity particles are collected in the impurity collection unit to flow out from the hydrocyclone;
Two or more wear-resistant members made of resin, synthetic rubber, or metal material, each of which is detachably attached to each part inside the liquid cyclone so as to cover the inner wall of the liquid cyclone, and the color of adjacent layers are different from each other;
A solid-liquid separation device comprising: The hydrocyclone includes a cylindrical portion into which raw water flows from the inflow pipe, a conical portion connected to a lower portion of the cylindrical portion, a funnel portion connected to a lower portion of the conical portion, and an upper opening of the cylindrical portion. A lid through which the outflow tube passes,
The wear resistant member has a cylindrical wear resistant member corresponding to the inner surface shape of the cylindrical portion, a conical wear resistant member corresponding to the inner surface shape of the cone portion, and an inner surface shape of the funnel portion. A corresponding funnel-type wear-resistant member, and a flat plate-type wear-resistant member with a central cylinder corresponding to the inner shape of the lid,
2. The cylindrical portion, the conical portion, and the funnel portion are divided by a plane intersecting the axis of the hydrocyclone, and are connected to each other by a flange joint on the divided surface. Solid-liquid separator. The hydrocyclone comprises a pair of left and right longitudinally divided housing assemblies that are divided symmetrically, and a lid that closes an upper opening when the pair of left and right longitudinally separated housing assemblies are combined and through which the outflow pipe penetrates. Have
The wear-resistant member has wear-resistant members having shapes corresponding respectively to the inner surfaces of the pair of left and right vertically divided housing assemblies,
2. The solid-liquid separation according to claim 1, wherein the vertical division housing assembly is divided by a plane parallel to the axis of the hydrocyclone, and the division planes are connected to each other by a hinge joint. apparatus. The wear-resistant member includes a flange having a sealing function for preventing liquid leakage from a flange joint that connects the cylindrical portion, the conical portion, the funnel portion, and the lid to each other . The solid-liquid separation apparatus of any one of Claims .

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