JP2006297366A - Solid and liquid separator and solid and liquid separating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the purity of obtained solid substances relating to a solid and liquid separator for separating liquid substances and solid substances from a mixed body and a solid and liquid separating method. <P>SOLUTION: The solid and liquid separator 10 for separating the liquid substances and the solid substances from the mixed body S comprises a filtration part 11a onto the surface of which the mixed body S is supplied, a seal device 12 having a frame-shaped or annular seal material 12a supported so as to be advanced to and retreated from the surface of the filtration part 11a, and a pressurizing device 13 pressurizing the mixed body S fed to the surface of the filtration part 11a. The opening surface of the seal material 12a is pressed, on its all the periphery, by the surface of the filtration part 11a or the mixed body S fed to the surface and supported so that they can be fitted to each other. Additionally, the pressurizing device 13 pressurizes the mixed body S positioned on the opening surface inner side of the seal material 12a fitted to the surface of the filtration part 11a or the mixed body S fed to the surface and separates the liquid substances. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a solid-liquid separation device and a solid-liquid separation method for separating a liquid substance and a solid substance from a mixture.

As this type of solid-liquid separation device, for example, as shown in Patent Document 1 below, a filtration unit in which the mixture is supplied to the surface, and a pressurizing unit applied to the surface of the filtration unit. There is known a configuration in which a pressure unit and a recovery unit that recovers the liquid substance are provided on the back side of the filtration unit. Furthermore, the pressurizing means of this document 1 includes a pressurizing plate in which a plurality of through-holes are formed, and a surface on which these through-holes open contacts and pressurizes the mixture. A pressure fluid is passed through the through-hole in a state where it is in contact with the mixture, whereby the mixture is pressurized with the pressure plate and the pressure fluid.
As described above, the mixture is pressurized by both the pressure plate and the pressure fluid, and the liquid substance is squeezed out from the mixture, and at the same time, the mixture is recovered by the recovery means, so that the mixture is liquid. The substance and the solid substance can be separated.
Japanese Patent No. 3311417

  By the way, in the conventional solid-liquid separation device, when the mixture is pressurized by the pressure plate, the through-hole is opened, and the back surface side (hereinafter referred to as “pressurization region”) that pressurizes in contact with the mixture. Since the mixture is simply pressed toward the surface side of the filtration part, the mixture is outside the pressure region in the direction along the surface of the filtration part during the pressurization. There was a risk of being extruded or scattered. The mixture extruded in this manner has a larger amount of liquid substance remaining than that located in the pressure region, resulting in variations in the purity of the solid substance, resulting in a decrease in the purity of the solid substance. There was a problem that it was difficult to improve.

  The present invention has been made under such a background, and at the time of pressurization, the mixture is extruded or scattered outside the pressurization region in the direction along the surface of the filtration part. An object of the present invention is to provide a solid-liquid separation device and a solid-liquid separation method capable of preventing the above-described problem and suppressing the dispersion of the purity of the obtained solid substance and improving the purity of the solid substance. .

  In order to solve such problems and achieve the above object, the solid-liquid separation device of the present invention is a solid-liquid separation device that separates a liquid substance and a solid substance from a mixture, and the mixing is performed on the surface. A filtration unit to which a body is supplied, a sealing means having a frame-like or annular sealing material supported so as to be able to advance and retreat toward the surface of the filtration unit, and the mixture supplied to the surface of the filtration unit. Pressurizing means for pressurizing, and the sealing material can be brought into intimate contact by being pressed against the surface of the filtration part or the mixture supplied to the surface over the entire circumference. The pressurizing means pressurizes the liquid located on the surface of the filtration part or on the inner side of the opening of the sealing material in close contact with the mixture supplied to the surface. It is configured to separate substances

  According to the present invention, the sealing material is supported so that the opening surface thereof can be brought into close contact with the surface of the filtration unit or the mixture supplied to the surface over the entire circumference. In addition, the pressurizing unit pressurizes the mixture located inside the opening surface of the sealing material in close contact with the surface of the filtration unit or the mixture supplied to the surface to separate the liquid substance. Therefore, when the mixture is pressurized by the pressurizing means, the mixture is pushed outward or scattered from the inside of the opening surface of the sealing material in the direction along the surface of the filtration part. It becomes possible to prevent that. That is, it becomes possible to pressurize the mixture located inside the opening surface of the sealing material while keeping the mixture inside. As a result, not only can the solid-liquid separation efficiency be improved, but also the purity of the obtained solid substance can be suppressed and the purity of the solid substance can be improved.

  Furthermore, when the driving means for driving the sealing material and the driving means for driving the pressurizing means are provided independently, the sealing material and the pressurizing means can be driven independently. The pressure applied by the sealing material can be appropriately changed according to, for example, the properties of the mixture, and when the mixture is pressurized by the pressurizing means, the mixture is moved outward. Extrusion or scattering can be prevented regardless of the type of the mixture. As a result, even when various types of mixtures are squeezed and ventilated, stable filtration can be performed without scattering the mixture, and solid-liquid separation efficiency can be improved. It becomes possible to improve the handleability of this solid-liquid separator.

The sealing material is preferably formed of a material that is elastically deformed. As such a material, for example, foamed rubber, single-foam sponge, or urethane can be used.
In this case, it is possible to pressurize the mixture located inside the opening surface of the sealing material while the sealing material is elastically deformed and brought into close contact with the surface of the filtration part or the mixture supplied to the surface. It becomes possible to reliably suppress the mixture from being extruded from the inside of the opening surface of the sealing material to the outside during the pressurization, improving the solid-liquid separation efficiency and It is possible to reliably reduce the variation in purity.

Further, as the sealing material that is elastically deformed, a diaphragm can be used as another one. By supplying a pressure fluid into the diaphragm, it can be expanded and elastically deformed.
In this case, it is possible to achieve the same effect as the sealing material formed of the material, and when the pressure fluid is directly supplied into the diaphragm, it expands and elastically deforms to the surface of the filtration unit. Since they are in close contact with each other, it is possible to reliably realize the sealing of the mixture by the sealing material with a simple configuration.

The sealing material may be capable of being pressed against the surface of the filtration unit or the mixture supplied to the surface independently of each other in a region divided into a plurality in the circumferential direction.
In this case, since it becomes possible to vary the close contact force to the surface of the filtration part for each circumferential position of the seal material, this close contact force is sealed according to, for example, the properties of the mixture or restrictions on the apparatus. By adjusting each position in the circumferential direction of the material, it is possible to make the close contact state with the surface of the filtration part uniform over the entire circumference of the sealing material. Accordingly, it is possible to reliably suppress the mixture from being pushed outward from the inside of the opening surface of the sealing material.

Furthermore, the pressurizing means may pressurize the mixture with a pressure fluid supplied to the inside of the opening surface of the sealing material.
Further, the pressurizing means includes a pressurizing plate in which a plurality of through holes are formed, and a surface on which the through holes are open contacts and pressurizes the mixture, and the pressurizing plate is attached to the mixture. You may make it pressurize the said mixture with the said pressurization board and the said pressure fluid by allowing a pressure fluid to pass through the said through-hole in the state contacted. In this case, it is possible to reliably improve the solid-liquid separation efficiency and reduce the variation in the purity of the solid substance.

Furthermore, a recovery means for recovering the separated liquid substance may be provided on the back surface side of the filtration unit, and the recovery means may be connected to a vacuum suction device.
In this case, the mixture supplied to the surface of the filtration unit can be not only pressurized by the pressurizing means from the upper side, but also vacuumed by the vacuum suction device from the lower side. Efficiency and purity of the resulting solid material can be further improved.

Further, the surface of the filtration part is constituted by a filter cloth provided on the apparatus main body so as to be able to run substantially horizontally, and a plurality of the recovery means are provided below the filter cloth in the running direction of the filter cloth, and a vacuum is provided. It is composed of a vacuum tray connected to a suction device, and the mixture supplied onto the filter cloth is liquidized by being vacuum sucked through the filter cloth by the vacuum tray while being pressurized by the pressurizing means. You may be set as the structure which isolate | separates a substance and a solid substance.
In this case, it is possible to perform solid-liquid separation by pressurizing the mixture while moving it intermittently or continuously with a filter cloth, and the solid-liquid separation process with improved purity of the obtained solid substance is highly efficient. Can be implemented.

  Further, the solid-liquid separation method of the present invention uses the solid-liquid separation device according to any one of claims 1 to 9 to surround and seal the mixture supplied to the surface of the filtration part by the sealing material. In addition, the liquid substance is separated from the solid substance by pressurizing the mixture located inside the opening surface by the pressurizing means.

Furthermore, the solid-liquid separation method of the present invention uses the solid-liquid separation device according to claim 8 or 9 to surround and seal the mixture supplied to the surface of the filtration unit by the sealing material, When separating the liquid substance from the solid substance by pressurizing the mixture located inside the opening surface by the pressurizing means, the mixture supplied to the surface of the filtration part is separated from the back surface of the filtration part by the recovery means. It is characterized by vacuum suction from the side.
In these cases, not only can the solid-liquid separation efficiency be improved, but also the purity of the obtained solid substance can be suppressed and the purity of the solid substance can be improved.

  Not only can the solid-liquid separation efficiency be improved, but also the purity of the obtained solid substance can be suppressed and the purity of the solid substance can be improved.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
In the solid-liquid separation device 10 according to the present embodiment, the filtration unit 11a to which the mixture is supplied to the surface, the sealing means 12 having the frame-shaped sealing material 12a, and the mixture supplied to the surface of the filtration unit 11a are added. There are provided pressurizing means 13 for pressing, and recovery means 14 provided on the back side of the filtration part 11a for recovering the liquid substance separated from the mixture.

In this embodiment, the filtration part 11a is comprised by a part of filter cloth 11 provided in the apparatus main body 10a so that a substantially horizontal run is possible. That is, as shown in FIG. 4, the filter cloth 11 is stretched endlessly on a number of guide rolls 15 rotatably provided on the apparatus main body 10a, and is horizontally stretched on the upper side of the apparatus main body 10a. A portion (hereinafter referred to as “horizontal portion”) 11a constitutes the filtering portion (hereinafter, the horizontal portion 11a is referred to as “filtering portion 11a”).
A plurality of (four in the illustrated example) recovery means 14 is provided on the back surface side of the filtration unit 11a along the traveling direction F of the filtration unit 11a, and is connected to a vacuum suction device (not shown). Consists of trays A1 to A4. The mixture is a so-called slurry S containing a solid substance in a liquid substance.

  As shown in FIGS. 1 and 2, the upper surfaces of the plurality of vacuum trays A1 to A4 each have a horizontal portion 14b at the center of the cross section when viewed from the running direction F of the filtration portion 11a, and both ends of the horizontal portion 14b. It is made into the substantially V shape by which the inclination part 14c which stands | starts up diagonally upward toward the part was provided in a row. Here, the filtration part 11a is arranged on the upper surface of the vacuum trays A1 to A4, so that the filtration part 11a is also substantially V-shaped along the upper surface of the vacuum trays A1 to A4. A plurality of through holes are formed on the horizontal part 14b and the horizontal part 14b side of the inclined part 14c in the upper surface of the vacuum trays A1 to A4, and the filtering part 11a is formed through the through holes. A vacuum suction force acts on the slurry S supplied to the surface, and the liquid material from the slurry S flows into the vacuum trays A1 to A4.

  The plurality of vacuum trays A1 to A4 are independently connected to a control valve (not shown) and a filtrate tank, and each filtrate tank is connected to a vacuum pump and a filtrate pump (not shown). And each vacuum tray A1-A4 can perform a required vacuum pressure and air release operation independently. Moreover, the filter cloth 11 on each vacuum tray A1-A4, ie, the filtration part 11a, is respectively divided into a cake formation section, a first and second washing section, and a dehydration section.

  Above the filtering unit 11a, the slurry supply device 16 supported by the moving frame 10b and the first and second cleaning devices 17a and 17b are reciprocated along the traveling direction F of the filtering unit 11a in a state where they are connected to each other. It is provided movably. The slurry supply device 16 supplies the slurry S to the cake forming section, and the cleaning devices 17a and 17b respectively supply a second cleaning filtrate (second cleaning section to the first and second cleaning sections). Permeated recovered liquid) and fresh cleaning liquid (for example, tap water) are supplied.

Further, as shown in FIG. 4, a support member 19 is attached to the lower part of the apparatus main body 10a, and a traveling carriage 18 is disposed on the support member 19 so as to be able to travel along the traveling direction F of the filter portion 11a. Has been. The traveling carriage 18 is provided with a clamping cylinder (not shown) that holds the filter cloth 11 located below the vacuum trays A1 to A4 from the thickness direction.
Furthermore, a moving cylinder 20 is suspended from the lower part of the apparatus main body 10a so that the axis extends in the traveling direction F, and one end portion (rear end portion in the traveling direction F) 20a of the moving cylinder 20 is provided. It is connected to the traveling carriage 18.

As described above, the one end side 20a of the moving cylinder 20 is moved in the direction opposite to the traveling direction F in a state where the holding cylinder holds the filter cloth 11 located below the vacuum trays A1 to A4. Then, the traveling carriage 18 and the filter cloth 11 positioned below the vacuum trays A1 to A4 are caused to travel toward the side opposite to the traveling direction F, and the filtering unit 11a is traveled toward the traveling direction F. It has become so.
A cleaning pipe 21 is connected to the other end portion (front end portion in the traveling direction F) 20b of the moving cylinder 20, and is obtained at the tip of the cleaning pipe 21 (front end portion in the traveling direction F). A cleaning nozzle 22 for cleaning the filter cloth 11 after the solid material is peeled off is provided surrounded by a cover 23 for preventing scattering of the cleaning water.

  In the solid-liquid separation device 10 of the present embodiment, above the filtration unit 11a, the second cleaning liquid supply means 17b is located in front of the traveling direction F (in the illustrated example, at the front end in the traveling direction F). The pressurizing means 13 and the sealing means 12 are arranged at the arrangement position of the vacuum tray A4. Note that the pressurizing means 13 and the sealing means 12 are disposed at the same position in the traveling direction F of the filtration part 11a, and can simultaneously act on the same slurry S on the surface of the filtration part 11a. ing.

  As shown in FIGS. 1 to 3, the pressurizing means 13 includes a main body portion 13a having a rectangular shape in plan view, and a flat vent plate disposed on the lower surface side of the main body portion 13a facing the surface of the filtration portion 11a. 13b, a pressurizing means driving portion 13c that supports the main body portion 13a and the ventilation plate 13b so as to be able to advance and retreat toward the surface of the filtration portion 11a, and a pressure fluid supply means (not shown) that supplies the main body portion 13a with a pressure fluid. It has been.

  As shown in FIG. 2, openings 13e and 13f that open to the surface of the filtration part 11a are provided on the lower surface of the main body part 13a. A plurality of openings 13e and 13f of the present embodiment are provided, and a main opening 13e that opens at the center in the width direction on the surface of the filtration part 11a and a sub-opening 13f that opens at both ends in the width direction on the surface of the filtration part 11a. , 13f. The insides of these openings 13e and 13f are communicated with the pressure fluid supply means via a pressure fluid supply hole 13h so that the pressure fluid can be supplied. In this embodiment, air is used as the pressure fluid.

  Further, a pressurizing means driving unit 13c is connected to the upper surface of the main body part 13a, and by driving the driving part 13c, the main body part 13a can move forward and backward with respect to the surface of the filtering part 11a together with the ventilation plate 13b. It is like that.

  The ventilation plate 13b is attached to the lower surface of the main body 13a so as to close the openings 13e and 13f. The ventilation plate 13b has a plurality of through holes 13g penetrating in the thickness direction, so that the pressure fluid supplied to the openings 13e and 13f through the pressure fluid supply hole 13h passes therethrough. The slurry S that passes through the hole 13g and contacts the surface of the filtration part 11a is supplied and can be pressurized.

  As shown in FIGS. 1 to 3, the sealing means 12 includes a frame-shaped sealing material 12a, a backup plate 12b bonded to the upper surface of the sealing material 12a, and an upper surface of the backup plate 12b. And a sealing material driving means 12c such as a cylinder device that supports the sealing material 12a together with the sealing material 12a so as to be able to advance and retreat. The vacuum tray A4 extends over the entire circumference of the opening surface of the sealing material 12a. The surface of the filtration part 11a located in a part corresponding to the inclined part 14c of the material and the slurry S supplied to the surface can be pressed and brought into close contact with each other. The sealing material driving means 12c is constituted by another component different from the pressurizing means driving section 13c, and is located in a portion corresponding to the inclined portion 14c of the vacuum tray A4 independently of the ventilation plate 13b. The surface of the filtration part 11a and the slurry S supplied to the surface can be pressed.

The sealing means 12 is provided on the outer peripheral edge of the main body portion 13a of the pressurizing means 13, the sealing material 12a is disposed so that the lower surface side thereof protrudes from the lower surface of the main body portion 13a, and the backup plate 12b is The seal member driving means 12c is disposed on the inner surface of the main body 13a, and is disposed on the upper surface of the main body 13a.
As shown in FIG. 1, the backup plate 12b is disposed so as to cover substantially the entire upper surface of the sealing material 12a, and is divided into a plurality of parts in the circumferential direction. That is, the backup plate 12b presses the portion of the sealing material 12a that presses the surface of the filtration portion 11a that is located in the portion corresponding to the inclined portion 14c of the vacuum tray A4, and the slurry S that is supplied to the surface. It is set as the structure divided | segmented into the part.

  A plurality of sealing material driving means 12c are provided corresponding to a plurality of divided backup plates 12b, and each of the divided backup plates 12b is separately applied to the surface of the filtration part 11a by a plurality of sealing material driving means 12c. They are advanced and retracted independently of each other. As a result, the integrally formed sealing material 12a presses the part that presses the surface of the filtration part 11a located at the part corresponding to the inclined part 14c of the vacuum tray A4 and the slurry S supplied to the surface. The close contact force is made different between the portions to be made, and these close contact states can be made uniform over the entire circumference of the sealing material 12a. The sealing material 12a of the present embodiment is formed of, for example, foamed rubber, single foam sponge, or urethane, and is supplied to the surface of the filtration unit 11a located at a portion corresponding to the inclined portion 14c of the vacuum tray A4 and the surface. When it is pressed and brought into close contact with the slurry S, it is elastically deformed.

  Here, in a plan view of the sealing means 12 and the pressurizing means 13, the inner peripheral edge shape of the sealing material 12a is substantially the same as the outer peripheral edge shape of the vent plate 13b of the pressurizing means 13, and these inner peripheral edges are the same. There is almost no gap between the outer peripheral edge and the outer peripheral edge. That is, the ventilation plate 13b and the sealing material 12a of the present embodiment are configured such that a part of the outer peripheral edge of the ventilation plate 13b bites into the inner peripheral edge of the sealing material 12a.

  Further, when the sealing material 12a is moved forward, as shown in FIG. 2, the outer peripheral edge side in the width direction of the filtration part 11a is on the upper surface of the inclined part 14c of the vacuum tray A4, as shown in FIG. The inner peripheral edge in the width direction of the filtration part 11a is in close contact with the outer peripheral edge of the slurry S in the width direction. Further, both ends of the lower surface of the sealing material 12a in the traveling direction F are in close contact with the slurry S as shown in FIG.

Next, a method for separating the slurry S into a liquid substance and a solid substance by the solid-liquid separation apparatus 10 configured as described above will be described.
First, after the vacuum suction to each of the vacuum trays A1 to A4 is suspended, the one end portion 20a of the moving cylinder 20 is placed in a state where the filter cloth 11 positioned below the vacuum trays A1 to A4 is sandwiched by the sandwiching cylinder. It is moved by a predetermined distance in the direction opposite to the traveling direction F. Accordingly, the filter cloth 11 positioned below the vacuum trays A1 to A4 is moved toward the opposite side of the traveling direction F, and the filtering unit 11a is moved by a predetermined distance toward the traveling direction F.

  Next, vacuum suction of the vacuum trays A1 to A4 is started. At this time, the slurry S is uniformly supplied to the cake forming section on the upper surface of the vacuum tray A1 by the slurry supply device 16, and the first and second cleaning devices 17a and 17b are used to supply the first and second surfaces on the upper surfaces of the vacuum trays A2 and A3. The second washing filtrate and the fresh washing liquid are uniformly sprayed on the second washing section, respectively, and the cake-like slurry S formed in the first and second washing sections is washed. Washing water is supplied to the filter cloth 11 to wash the filter cloth 11. In the dewatering section, dehydration and drying are performed by vacuum suction of the washed slurry S.

  As described above, the filter unit 11a is intermittently moved by a predetermined distance in the traveling direction F by the sandwiching cylinder and the moving cylinder 20, and the slurry S is supplied to the surface of the filter unit 11a by the slurry supply device 16 and vacuumed. After the cake-like slurry S is obtained, the slurry S is supplied to the slurry S by the first and second cleaning devices 17a and 17b and sucked in vacuum, and further washed. The slurry S is dehydrated and dried by vacuum suction, and is removed from the filter cloth 11 by a scraper (not shown) as a solid substance and collected.

  Here, in this embodiment, the filter cloth 11 is stopped when the second cleaning filtrate and the slurry S supplied with the cleaning liquid are vacuum-sucked in the vacuum tray A4 located at the most distal portion in the traveling direction F. In this state, the pressurizing means driving part 13c of the pressurizing means 13 is moved forward toward the surface of the filtering part 11a, and the main body part 13c is moved forward together with the ventilation plate 13b toward the surface of the filtering part 11a.

At the same time, the sealing material driving means 12c of the sealing means 12 is driven forward toward the surface of the filtering portion 11a, and the sealing material 12a is moved forward toward the surface of the filtering portion 11a via the backup plate 12b to The lower surface of the material 12a is pressed and brought into close contact with the surface of the filtration unit 11a located at a portion corresponding to the inclined portion 14c of the vacuum tray A4 and the slurry S supplied to the surface. At this time, the sealing material 12a is elastically deformed in the thickness direction.
As described above, the lower surface of the ventilation plate 13b is surrounded by the sealing material 12a at substantially the same time as the lower surface of the sealing material 12a is pressed and brought into close contact with the surface of the filtration part 11a and the slurry S supplied to the surface. Contact the sealed slurry S.

  Then, in a state where the surrounding of the slurry S by the sealing material 12a is maintained, the pressure fluid supply means is operated, and the pressure fluid is supplied to the openings 13e through the pressure fluid supply holes 13h formed in the main body portion 13a. 13f. As a result, the inside of the openings 13e and 13f of the main body 13a is blocked by the ventilation plate 13b and the slurry S, and the internal pressure increases. Then, the increased internal pressure and the pressure fluid supplied to the openings 13e and 13f act on the slurry S through the through holes 13g formed in the ventilation plate 13b.

  As described above, the slurry S located inside the opening surface of the sealing material 12a is pressurized by the pressure fluid supplied into the openings 13e and 13f. At this time, the slurry S is separated into a solid substance and a liquid substance by evacuating the lower surface side of the filtration part 11a with the vacuum tray A4.

  As described above, according to the solid-liquid separation device 10 according to the present embodiment, the sealing material 12a is pressed against the surface of the filtration unit 11a and the slurry S supplied to the surface over the entire circumference. The pressurizing means 13 is supported on the surface of the filtration unit 11a or the inner side of the opening surface of the sealing material 12a in close contact with the slurry S supplied to the surface. Since the liquid substance is separated by pressurizing the slurry, when the slurry S is pressurized by the pressurizing means 13, the slurry S is more outward than the inside of the opening surface of the sealing material 12a in the direction along the surface of the filtration part 11a. It is possible to prevent extrusion or scattering.

  That is, it is possible to pressurize the slurry S located on the inner side of the opening surface of the sealing material 12a while keeping the slurry S inside. As a result, not only can the solid-liquid separation efficiency be improved, but also the purity of the obtained solid substance can be suppressed and the purity of the solid substance can be improved.

  Further, since the sealing material 12a is formed of the elastically deformable material, the sealing material 12a is elastically deformed and brought into close contact with the surface of the filtration portion 11a and the slurry S supplied to the surface. The slurry S located inside the opening surface of the material 12a can be pressurized and solid-liquid separated, and at the time of the pressing, the slurry S is extruded from the inside of the opening surface of the sealing material 12a to the outside. This can be reliably suppressed, and the solid-liquid separation efficiency can be improved and the variation in the purity of the solid substance can be further suppressed.

  Since the sealing material 12a is supported by the sealing material driving means 12c via the backup plate 12b so as to be able to move forward and backward, the sealing material 12a is formed of the material and has high flexibility. Therefore, the seal material 12a can be moved forward and backward easily and reliably by the seal material driving means 12c.

  Furthermore, since the sealing material 12a can be pressed against the surface of the filtration part 11a and the slurry S supplied to the surface independently of each other in a region divided into a plurality in the circumferential direction. For each circumferential position of the material 12a, that is, in this embodiment, the portion that presses the surface of the filtration portion 11a located in the portion corresponding to the inclined portion 14c of the vacuum tray A4, and the slurry S supplied to the surface is pressed. It becomes possible to make the close force different from the part that does. For example, the pressing force in the portion that presses the slurry S can be made smaller than the pressing force in the portion that presses the surface of the filtration part 11a. This makes it possible to make the intimate state uniform over the entire circumference of the sealing material 12a, and to ensure that the slurry S is pushed outward from the inside of the opening surface of the sealing material 12a. Can be suppressed.

  Furthermore, in the solid-liquid separation device 10 of the present embodiment, the surface of the filtration unit 11a is constituted by the filter cloth 11 provided on the device main body 10a so as to be able to run substantially horizontally, and the recovery means 14 is provided with the filtration unit 11a. A plurality of pressure filters 11 are provided in the traveling direction F of the filtration unit 11a, and are constituted by vacuum trays A1 to A4 connected to a vacuum suction device (not shown), and the slurry S supplied to the surface of the filtration unit 11a is pressurized. 13, while the liquid material and the solid material are separated by vacuum suction through the filter cloth 11 by the vacuum tray A <b> 4 while being pressurized by 13, the slurry S is moved intermittently by the filter cloth 11. It is possible to perform solid-liquid separation by applying pressure, and the solid-liquid separation process in which the purity of the obtained solid substance is improved can be performed with high efficiency.

  Further, the sealing material driving means 12c is constituted by another component different from the pressurizing means driving portion 13c, and is located in a portion corresponding to the inclined portion 14c of the vacuum tray A4 independently of the ventilation plate 13b. Since the surface of the filtration part 11a and the slurry S supplied to the surface can be pressed, the ventilation plate 13b and the sealing material are selected according to the properties of the slurry S supplied to the surface of the filtration part 11a, for example. It becomes possible to change suitably the load of the said press toward the surface of the filtration part 11a of 12a. Thereby, when the slurry S is pressurized by the pressurizing means 13, the slurry S can be prevented from being pushed out or scattered regardless of the type of the slurry S. As a result, even when various types of slurry S are squeezed and ventilated, stable filtration can be performed without scattering the slurry S, and the solid-liquid separation efficiency can be improved. The handling property of the solid-liquid separator 10 can be improved.

Next, a second embodiment according to the present invention will be described with reference to FIG. 5. The same parts as those in the first embodiment will be denoted by the same reference numerals, and the description thereof will be omitted.
The sealing means 40 includes a sealing material driving means 41 made of a diaphragm instead of the sealing material driving means 12c made of a cylinder device or the like of the sealing means 12. That is, when the pressure fluid is supplied to the pressure fluid supply hole 42 formed in the main body portion 13a of the pressurizing means 13 and the pressure fluid is supplied into the seal material driving means 41, the seal material driving means 41 is Elastically expanding and deforming, and the deformation causes the sealing material 12a to move forward toward the surface side of the filtration part 11a, and the surface of the filtration part 11a located at a part corresponding to the inclined part 14c of the vacuum tray A4; and The slurry S supplied to the surface can be pressed.

  In the present embodiment, a plurality of sealing material driving means 41 are provided, and a plurality of pressure fluid supply holes 42 are formed in the main body portion 13a in accordance with the number of these sealing material driving means 41, and each pressure fluid supply hole is formed. The pressure fluid can be supplied from 42 to the inside of each sealing material driving means 41 independently of each other. Thereby, in the sealing material 12a, the pressing force can be made different between a portion that presses the surface of the filtering portion 11a and a portion that presses the slurry S supplied to the surface of the filtering portion 11a. Yes.

  Also in the present embodiment, it is possible to achieve substantially the same operational effects as in the first embodiment. In particular, as compared with the sealing means 12 of the first embodiment, it is possible to reduce the number of components of the sealing means 40, improve handling, and increase the cost of the apparatus. Can be suppressed.

Next, a third embodiment according to the present invention will be described with reference to FIG. 6, but only differences from the first embodiment will be described.
The sealing means 30 of the present embodiment is provided with a sealing material 31 formed of a diaphragm instead of the sealing material 12a and the backup plate 12b of the first embodiment, and the main body 13a of the pressurizing means 13 is provided with a sealing material. A pressure fluid supply hole 32 is provided to connect the inside of 31 and a pressure fluid supply means (not shown). Then, the pressure fluid is supplied into the seal material 31 through the pressure fluid supply hole 32, whereby the seal material 31 expands and deforms, whereby the lower surface of the seal material 31 becomes the surface of the filtration part 11a. In close contact with the elastically deformed state.
Also in the present embodiment, it is possible not only to achieve the same effects as the first and second embodiments, but also to further reduce the components of the sealing means 30.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the configuration in which the filter cloth 11 is intermittently moved in the traveling direction F is shown, but the present invention can also be applied to a case where the filter cloth 11 is continuously moved. Moreover, although the structure which employ | adopted what is called a horizontal vacuum filter as shown in FIG. 4 as the solid-liquid separation apparatus 10 was shown, not only this but the filtration part 11a is not supported so that driving | running | working, The present invention can also be applied to a configuration in which the surface of the filtration unit 11a to which the mixture is supplied is fixed. Furthermore, although the structure which showed vacuum tray A1-A4 as the collection | recovery means 14 was shown, it is not restricted to this, Moreover, the structure which does not have the collection means 14, ie, the surface of the filtration part 11a was supplied. The slurry S may be subjected to solid-liquid separation simply by pressurization by the pressurizing means 13 without vacuum suction by a vacuum suction device.

Furthermore, in the above-described embodiment, the configuration is shown in which air is used as the pressure fluid. However, a liquid such as water or a cleaning liquid may be used. Moreover, you may employ | adopt the solid-liquid separation apparatus 10 which does not have the ventilation board 13b.
Furthermore, you may use the ventilation board 13b as a pressurization board which pressurizes the slurry S supplied to the surface of the filtration part 11a. That is, when the pressurizing means driving unit 13c is driven forward with respect to the surface of the filtration unit 11a, the slurry S on the surface of the filtration unit 11a is pressurized by the lower surface of the ventilation plate 13b, and the pressure applied by the ventilation plate 13b is increased. You may make it pressurize the slurry S with the said pressure fluid in the state which maintained the pressure. In this case, the solid-liquid separation efficiency and the purity of the solid substance can be improved more reliably. Furthermore, it is also possible to pressurize the slurry S using a pressure plate in which the through hole 13g is not drilled instead of performing the pressurization with the pressure fluid, instead of the ventilation plate 13b.

  As modes for pressurizing the slurry S by the pressurizing means 13, there are three modes: one using only the pressure fluid, one using both the pressure fluid and the vent plate 13b as the pressurizing plate, and one using only the pressurizing plate. In each of these aspects, the slurry S supplied to the surface of the filtration part 11a by the collecting means 14 may or may not be vacuumed from below.

  Moreover, it may replace with the sealing means 30 shown in FIG. 6, and the structure which divided | segmented the sealing material 31 into plurality in the circumferential direction may be employ | adopted. In other words, in the sealing means 40 shown in FIG. 5, the sealing material 12a may be removed, and a plurality of sealing material driving means 41 formed of a diaphragm may be used as the sealing material. In this case, when the pressure fluid is separately supplied to the inside of the plurality of sealing materials (sealing material driving means 41) via the pressure fluid supply holes 42 and the respective sealing materials are expanded and deformed, the lower surfaces thereof are changed. The peripheral edge of the sealing material driving means 41 which is in close contact with the surface of the filtration part 11a located in the part corresponding to the inclined part 14c of the vacuum tray A4 and the slurry S supplied to the surface and adjacent in the circumferential direction It is desirable that the parts be in close contact with each other in an elastically deformed state.

  Further, in the first embodiment shown in FIG. 1 to FIG. 3 and the second embodiment shown in FIG. 5, sealing material driving means 12c, 41 for moving the sealing material 12a forward and backward toward the surface of the filtration part 11a, The main body portion 13a and the ventilation plate 13b are configured by components other than the pressurizing means driving portion 13c that is supported so as to be able to advance and retreat toward the surface of the filtration portion 11a. Instead, the sealing material 12a is pressurized. You may make it move forward / backward toward the surface of the filtration part 11a by the means drive part 13c. That is, in the first and second embodiments, a solid-liquid separator that does not include the sealing material driving units 12c and 41 and the backup plate 12b may be employed. Even in such a configuration, the sealing member 12a is moved forward and backward toward the surface of the filtering part 11a together with the main body part 13a and the ventilation plate 13b or the pressing plate by the pressing means driving part 13c. When the slurry S supplied to the surface is pressed by the pressing means 13, the slurry S can be surrounded by the sealing material 12a.

  At the time of pressurization, it becomes possible to prevent the mixture from being extruded or scattered outside the pressurization region in the direction along the surface of the filtration part, and the purity of the obtained solid substance is It is possible to suppress variation and improve the purity of the solid substance.

It is the principal part schematic of the solid-liquid separator shown as 1st Embodiment of this invention. In the solid-liquid separator of FIG. 1, it is the cross-sectional top view seen from the running direction of the filter cloth. In the solid-liquid separator of FIG. 1, it is the cross-sectional top view seen from the direction orthogonal to the running direction of a filter cloth. It is the whole solid-liquid separator shown as one embodiment of the present invention. It is the principal part schematic of the solid-liquid separator shown as 2nd Embodiment of this invention. It is a principal part schematic of the solid-liquid separator shown as 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Solid-liquid separator 10a Apparatus main body 11 Filter cloth 11a Filter part 12, 30, 40 Sealing means 12a, 31 Sealing material 13 Pressurizing means 14 Recovery means A1-A4 Vacuum tray F Running direction of filter cloth S Slurry (mixture)

Claims (11)

A solid-liquid separator for separating a liquid substance and a solid substance from a mixture,
A filtration part to which the mixture is supplied on the surface, a sealing means having a frame-like or annular sealing material supported so as to be able to advance and retreat toward the surface of the filtration part, and the supply to the surface of the filtration part A pressurizing means for pressurizing the mixture,
The sealing material is supported so that its opening surface can be pressed and intimately contacted with the surface of the filtration unit or the mixture supplied to the surface over the entire circumference, and the pressurizing unit Is configured so as to separate the liquid substance by pressurizing the mixture located inside the opening surface of the sealing material in close contact with the surface of the filtration unit or the mixture supplied to the surface. A solid-liquid separator characterized by. The solid-liquid separator according to claim 1,
The sealing material is formed of a material that is elastically deformed. The solid-liquid separator according to claim 2,
The solid-liquid separation device, wherein the sealing material is made of foamed rubber, single-foam sponge, or urethane. The solid-liquid separator according to claim 2,
The sealing material is a diaphragm, and is configured to expand and elastically deform when a pressure fluid is supplied into the diaphragm. In the solid-liquid separation device according to any one of claims 1 to 4,
The sealing material is capable of being pressed against the surface of the filtration unit or the mixture supplied to the surface independently of each other in a region divided in the circumferential direction. Solid-liquid separation device. In the solid-liquid separation device according to any one of claims 1 to 5,
The solid-liquid separation device, wherein the pressurizing means is configured to pressurize the mixture with a pressure fluid supplied to the inside of the opening surface of the sealing material. The solid-liquid separator according to claim 6,
The pressurizing means includes a pressure plate in which a plurality of through holes are formed, and a surface on which the through holes are open contacts and pressurizes the mixture, and the pressure plate is brought into contact with the mixture. The solid-liquid separation device is configured to pressurize the mixture with the pressure plate and the pressure fluid by allowing the pressure fluid to pass through the through-hole in a state where the pressure is applied. In the solid-liquid separation device according to any one of claims 1 to 7,
A solid-liquid separation device characterized in that a recovery means for recovering the separated liquid substance is provided on the back surface side of the filtration section, and the recovery means is connected to a vacuum suction device. The solid-liquid separator according to claim 8,
The surface of the filtration part is constituted by a filter cloth provided on the apparatus main body so as to be able to run substantially horizontally, and a plurality of the recovery means are provided below the filter cloth in the running direction of the filter cloth, and a vacuum suction device Consists of vacuum trays connected to
The mixture supplied on the filter cloth is separated from the liquid substance and the solid substance by vacuum suction through the filter cloth by the vacuum tray while being pressurized by the pressurizing means. A solid-liquid separator characterized by that.   The solid-liquid separation device according to claim 1 is used to surround and seal the mixture supplied to the surface of the filtration part by the sealing material, and to be mixed inside the opening surface. A solid-liquid separation method, wherein a body is pressurized by the pressurizing means to separate a liquid substance from a solid substance. The solid-liquid separation device according to claim 8 or 9 surrounds and seals the mixture supplied to the surface of the filtration unit by the sealing material, and the mixture located inside the opening surface is sealed with the mixture. When the liquid material is separated from the solid material by being pressurized by the pressurizing means, the mixture supplied to the surface of the filtration part is vacuum-sucked from the back side of the filtration part by the recovery means. Liquid separation method.

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