JP2023181547A - Cleaning device for filter press device and filter press device - Google Patents

Abstract

To discharge a liquid contained in a solid-liquid mixture smoothly when the solid-liquid mixture is dehydrated in a filter press device.SOLUTION: A cleaning device 100 is used for a filter press device having a plurality of filter plates 10, and a drainage receiving part 160 for receiving drainage flowing from the plurality of filter plates 10 and guiding the drainage toward a drainage route 162. The cleaning device 100 has: a water discharge part 150 having a discharge port for discharging washing water; and a positioning part for fixing or adjusting a position of the discharge port 152 of the water discharge part 150. The washing water discharged from the discharge port 152, whose position has been fixed or adjusted by the positioning part, is supplied into the drainage receiving part 160.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a cleaning device for a filter press device and a filter press device.

Patent Document 1 discloses an example of a filter press device. This type of filter press device has filter plates arranged in a predetermined direction, and has a configuration in which a plurality of filter plates can approach and separate from each other. Mud water, etc. is injected into the filter chamber configured as follows.

JP2006-247464A

In a filter press device, a method is adopted in which the filter plate is washed with washing water in order to remove dirt, solid matter, etc. from the filter plate. In this way, when cleaning the filter plate with washing water, it is necessary to appropriately treat the waste water flowing from the filter plate, and one example of this is to use a gutter or the like to allow the waste water to flow through a predetermined route. However, the washing water flowing from the filter plate may contain a large amount of solids, and solids tend to accumulate or precipitate when flowing through a drainage receiving part such as a gutter.

In order to solve at least one of the above-mentioned problems, the present disclosure provides a technology that easily prevents solids from accumulating in a drainage receiving part when the drainage water flowing from a plurality of filter plates of a filter press device is guided through the drainage receiving part. I will provide a.

A cleaning device for a filter press device according to the present disclosure includes:
multiple filter plates;
a drainage receiving part that receives the drainage water flowing from the plurality of filter plates and guides the drainage water toward a discharge path;
A cleaning device used for a filter press device having
a water discharge part having a discharge port for discharging cleaning water;
a positioning part that fixes or adjusts the position of the discharge port;
has
The washing water discharged from the discharge port whose position is fixed or adjusted by the positioning section is supplied into the drainage receiving section.

The technology according to the present disclosure can easily prevent solids from accumulating in the drainage receiving part when the wastewater flowing from the plurality of filter plates of the filter press device is guided through the drainage receiving part.

FIG. 1 is a side view conceptually showing a filter press device according to a first embodiment. FIG. 2 is an explanatory diagram conceptually showing an example in which a part of the filter press device of FIG. 1 is embodied. FIG. 3 is an explanatory diagram conceptually illustrating the configuration of a part of the filter press device of FIG. 1 viewed from above. FIG. 4 is an explanatory diagram conceptually illustrating the configuration of a part of the filter press device of FIG. 1 viewed from the front side. (A) is an explanatory diagram illustrating how one of the sets of adjacent filter plates is viewed from above in the first holding state, and (B) is an explanatory diagram illustrating a state in which the set of filter plates is separated and the cake is caked. FIG. 2 is an explanatory diagram illustrating a state in which (residues) are dropped. FIG. 6 is an explanatory diagram illustrating a state in which one filter plate and another filter plate are spaced apart in the filter plate structure of the filter press device according to the first embodiment. FIG. 7 is an explanatory diagram illustrating a state in which a solid-liquid mixture flows in a state where one filter plate and another filter plate are in close contact with each other in the filter plate structure of the filter press device according to the first embodiment. It is a front view of one filter plate of the filter press apparatus concerning a 1st embodiment. FIG. 9 is a front view illustrating a state in which the filter cloth of FIG. 8 is omitted from the filter plate. FIG. 10 is a front view illustrating a state in which the covering portion is further omitted from the configuration of FIG. 9. FIG. 11 is a rear view of the filter plate of FIG. 8. FIG. 12 is a rear view illustrating the filter plate of FIG. 11 with the filter cloth omitted. FIG. 13 is a rear view illustrating a state in which the covering portion is further omitted from the configuration of FIG. 12. FIG. 14 is a side view conceptually showing a filter press device according to the second embodiment. FIG. 15 is a side view conceptually showing a filter press device according to a third embodiment.

In the following, embodiments of the disclosure are listed and illustrated. Note that the features [1] to [6] exemplified below may be combined in any manner as long as there is no contradiction.

[1] A plurality of filter plates,
a drainage receiving part that receives the drainage water flowing from the plurality of filter plates and guides the drainage water toward a discharge path;
A cleaning device used for a filter press device having
a water discharge part having a discharge port for discharging cleaning water;
a positioning part that fixes or adjusts the position of the discharge port;
has
A cleaning device for a filter press device, wherein the cleaning water discharged from the discharge port whose position is fixed or adjusted by the positioning portion is supplied into the drainage receiving portion.

The cleaning device for filter press equipment in [1] above can supply cleaning water from the water discharge part to the drainage receiving part, so solids that have entered the drainage receiving part are easily washed away by the washing water. It is easy to prevent solids from continuing to precipitate or accumulate. Therefore, in this cleaning device, when the wastewater flowing from the plurality of filter plates of the filter press device is guided through the wastewater receiving portion, it is easy to prevent solids from accumulating in the wastewater receiving portion. Moreover, since the position of the water outlet is fixed or adjusted by the positioning part, it is easy to reduce or omit the labor required by the operator to fix or adjust the position of the water outlet.

[2] The cleaning device for a filter press device according to [1], wherein the cleaning water supplied from the discharge port into the drainage receiving portion causes the drainage in the drainage receiving portion to flow toward the discharge path side.

The washing device for the filter press equipment in [2] above can guide wastewater to the discharge path side by the flow caused by the washing water, so it is possible to further suppress the accumulation of solids in the wastewater receiving part. can.

[3] The drainage receiving portion has a first receiving portion that is displaced between a lower position that receives liquid falling from the plurality of filter plates and a retreated position that is evacuated from the lower position,
The filter according to [1] or [2], wherein the washing water is supplied from the discharge port whose position is fixed or adjusted by the positioning part into the first receiving part located at the lower position or the retracted position. Cleaning equipment for press equipment.

Even if the cleaning device for the filter press equipment described in [3] above has a configuration in which the drainage receiving section can be moved between the lower position and the retracted position, the water discharging section whose position is fixed or adjusted cleans the inside of the drainage receiving section. Water can be supplied and it is easy to prevent solids from accumulating in the drainage receiver.

[4] The cleaning device for a filter press device according to any one of [1] to [3], wherein the water discharge section is fixed to the drainage receiving section.

In the above [4] cleaning device for filter press equipment, the water discharge part is fixed to the drainage receiving part, so it is possible to suppress the displacement of the washing water caused by the misalignment of the positional relationship between the water discharge part and the drainage receiving part. This allows cleaning water to be more stably supplied into the drainage receiving section.

[5] The water discharge part is fixed at a position different from the drainage receiving part,
The cleaning device for a filter press device according to any one of [1] to [3], wherein the drainage receiving part is displaceable with respect to the water discharge part.

The cleaning device for a filter press device described in [5] above can displace the drainage receiving portion in a manner that is highly independent of the water discharge portion.

[6] The water discharge part is fixed at a different position from the drainage receiving part,
The cleaning device for a filter press device according to [3], wherein the cleaning water is supplied from the water discharge section to the drainage receiving section when the drainage receiving section is in the lower position.

The cleaning device for the filter press equipment described in [6] above can displace the drainage receiving part in a manner that is highly independent of the water discharge part, and moreover, the drainage receiving part can be moved in the lower position. can be washed.

[7] The washing water is water supplied through an introduction pipe provided at a position different from the water discharge part, and the drainage receiving part is configured to be displaced relative to the introduction pipe,
Furthermore, it has a communication pipe forming a path for flowing the washing water from the introduction pipe side to the water discharge part side,
The cleaning device for a filter press device according to [4], wherein the communication pipe is configured to be flexibly deformable, and the communication pipe is deformed when the drainage receiving portion moves.

The cleaning device for the filter press equipment described in [7] above must maintain a state in which the flow path between the introduction pipe and the water discharge part is secured by the communication pipe even if the drainage receiving part and the water discharge part are displaced. This makes it possible to appropriately achieve both a configuration in which wash water is introduced into the drainage receiving section from the outside and a configuration in which the drainage receiving section is displaced.

[8] An introduction pipe for introducing cleaning water;
a first supply pipe that is a path for supplying cleaning water to the filter plate cleaning device;
a second supply pipe that is a path for supplying cleaning water to the water discharge section;
a valve capable of switching the destination of the cleaning water introduced from the introduction pipe to at least the first supply pipe and the second supply pipe;
The cleaning device for a filter press device according to any one of [1] to [7].

The cleaning device for the filter press device in [8] above can switch the supply destination of the cleaning water introduced from the introduction pipe to the drainage receiving section and the filter plate cleaning device, and supply the water through a common path. The washed water can be used for different purposes.

[9] A filter press device including a cleaning device for a filter press device according to any one of [1] to [8].

The filter press device described in [6] above can provide the same effects as the cleaning device for a filter press device described in any one of [1] to [5] above.

<First embodiment>
The following description relates to a cleaning device for a filter press device and a filter press device 1 according to the first embodiment. In addition, each drawing referred to in the following explanation is used to explain technical features, and unless there is a specific description, it is not intended to limit the drawings only, and is merely an example of explanation. .

(Overview of filter press equipment)
The following description relates to an overview of the filter press device 1.
The filter press device 1 dehydrates a solid-liquid mixture (for example, slurry of sludge, excavated soil, cement, etc. mixed in water) and discharges a solidified object (cake) of the residue after dehydrating the solid-liquid mixture. It is a device that can

As shown in FIGS. 2 and 3, the filter press device 1 includes a filter plate group 5 including a plurality of filter plates 10 that move in a predetermined direction. In addition, in the following description, the direction (predetermined direction) in which the several filter plate 10 moves is the front-back direction. In the example shown in FIG. 3 and the like, the thickness direction of each filter plate 10 when the plurality of filter plates 10 are in close proximity (when adjacent filter plates are in contact with each other) is the front-rear direction. ing. In the example shown in FIG. 3 and the like, in the front-rear direction, the supply path 62 side (the side where the solid-liquid mixture is injected) is the front side, and the opposite side is the rear side. Further, among the directions perpendicular to the front-back direction, a predetermined first direction is the up-down direction. In the example shown in FIG. 4 and the like, in the filter plate 10 configured in a rectangular shape (specifically, a square shape when viewed from the front), the direction (vertical direction) in which both side portions extend is the up-down direction. The up-down direction is preferably a vertical up-down direction, but may be a direction slightly inclined with respect to the vertical up-down direction. The direction perpendicular to the front-rear direction and the up-down direction is the left-right direction. In the example shown in FIG. 4 and the like, the direction in which the upper and lower ends of the rectangular filter plate 10 extend is the left-right direction.

In the filter press device 1, as shown in FIG. 3 and FIG. A solid-liquid mixture is injected into the filter chamber 40 (accommodating section). In the filter press device 1, when the plurality of filter plates 10 are in a spaced apart state, the residue of the solid-liquid mixture contained in the filter chamber 40 (accommodating section) is discharged.

As shown in FIGS. 1 to 3, etc., the filter press device 1 uses a filter plate structure 3, and this filter plate structure 3 has a configuration in which filter plates 10 are arranged in series. The filter plate 10 is a plate-shaped portion that has the function of receiving a solid-liquid mixture and discharging liquid from the solid-liquid mixture. The filter plate 10 has a structure in which a filter cloth 18 is stretched so as to cover a plate-shaped substrate portion 11 in which a through hole 16 is formed in the center. The filter press device 1 has an approach/separation device (detailed illustration is omitted in FIGS. 1 and 2) that can move the plurality of filter plates 10 constituting the filter plate structure 3 toward and away from each other. When supplying a solid-liquid mixture, the filter press device 1 is configured to supply a solid-liquid mixture (for example, muddy water, etc.) in a stacked state (see FIGS. 1, 2, 7, etc.) with adjacent filter plates 10 in close contact with each other. slurry) is pressed into the through holes 16 of each filter plate 10 using a pump. The injected solid-liquid mixture remains under high internal pressure in the filter chamber (filtration chamber) 40 shown in FIGS. 2, 7, etc., and water is discharged through minute gaps in the filter cloth 18. Then, between the adjacent filter plates 10 (specifically, between the filter cloths 18 in the adjacent filter plates 10), the residue obtained by removing a large amount of water from the solid-liquid mixture supplied from the pump is solidified. A dehydrated solid (dehydrated cake) is formed. Note that the water that has flowed into the inside of the filter plate 10 through the holes of the filter cloth 18 is discharged to the outside (lower part) of the filter plate 10 through a drainage channel 28 inside the filter plate 10. This point will be explained in detail later.

(filter plate structure)
The following description concerns details of the filter plate structure 3.
As shown in FIG. 7, the filter plate structure 3 is a structure composed of a plurality of filter plates 10. Each filter plate 10 has a central recess 12 and a peripheral protrusion 14 formed on one side and the other side in the thickness direction thereof, respectively.

The central recess 12 is a portion that is concave in the thickness direction around the through hole 16. In FIG. 7 and the like, of the two central recesses 12 formed in each filter plate 10, the recess on one side (the side on which the annular protrusion 24 is formed) is replaced by one central recess 12A (or simply The recess on the other side (the side on which the annular recess 34 is formed) is the other center recess 12B (or simply the center recess 12B). As shown in FIGS. 8 and 9, one center side recess 12A is a recess with a rectangular outer diameter when viewed from the front side. As shown in FIGS. 11 and 12, the other central recess 12B is a recess with a rectangular outer diameter when viewed from the back side.

The peripheral convex portion 14 is a portion that is formed in a frame shape surrounding the central concave portion 12 and has a convex shape in the plate thickness direction, and is at least partially disposed in an annular shape around the central concave portion 12. be. As shown in FIGS. 8 and 9, the peripheral edge convex portion 14A on one side (the side on which the annular convex portion 24 is formed) is a rectangular frame when viewed from the front side, and is a rectangular frame portion of the filter plate 10. They are arranged in a rectangular shape (specifically, a square shape) along the periphery. As shown in FIGS. 11 and 12, the peripheral edge convex portion 14B on the other side (the side where the annular recess 34 is formed) is a rectangular frame when viewed from the front, and the peripheral edge portion of the filter plate 10 They are arranged in a rectangular shape (specifically, a square shape) along the

As shown in FIGS. 8 and 9, the peripheral convex portion 14A on one side (the side on which the annular convex portion 24 is formed) has an annular shape (specifically, a square frame shape) around the central concave portion 12A. ), and an annular convex portion 24 that is arranged in an annular shape (specifically, a square frame shape) around the central recess 12A and protrudes from the first pressing surface 22. is formed.

The annular convex portion 24 is made of an elastic material such as rubber or an elastomer other than rubber, and includes a groove formed on the first pressing surface 22 of the peripheral convex portion 14A (a groove formed to surround the central concave portion 12A). It is fixed to the circumferential convex portion 14A by fitting into the groove (groove). As shown in FIG. 7, the annular convex portion 24 has a curved shape such that the outer shape of the cross section cut in a plane direction perpendicular to the direction in which the annular convex portion 24 extends is outwardly convex. Further, the annular convex portion 24 has a hollow shape with a cavity 24A formed therein. The void portion 24A is formed outside the position of the first pressing surface 22 in the thickness direction of the filter plate 10 (on the side farther from the center in the thickness direction), and extends along the direction in which the annular convex portion 24 extends. This structure is arranged in an annular shape around the central recess 12.

As shown in FIGS. 11 and 12, the peripheral convex portion 14B on the other side (the side where the annular recess 34 is formed) has an annular shape (specifically, a square frame shape) around the central recess 12B. an annular recess 34 arranged in an annular shape (specifically, in a square frame shape) around the central recess 12B and recessed from the second pressing surface 32; is formed.

As shown in FIGS. 7 to 13, in each filter plate 10, there is a central recess 12A on one side (the side where the annular convex part 24 is formed) and a central recess 12A on the other side (the side where the annular recess 34 is formed). A through hole 16 is formed so as to penetrate in the plate thickness direction between the central recess 12B on the surface side). The through-holes 16 function as channels that allow the solid-liquid mixture to flow in the thickness direction of the filter plate 10 so as to pass through the inside of the filter plate 10 .

As shown in FIGS. 7 and 8, the filter cloth 18 is disposed on one side in the thickness direction so as to cover the area outside the through hole 16, and as shown in FIGS. 7 and 11, on the other side in the thickness direction A filter cloth 18 is arranged so as to cover an area outside the through hole 16 on the side. In addition, in FIG. 7, two filter cloths 18 interposed between the first pressing surface 22 and the second pressing surface 32 and between the annular convex portion 24 and the annular recess 34 are omitted. In FIGS. 7, 8, and 11, the filter cloth 18A covers one side of the filter cloth 18 (the side on which the annular convex portion 24 is formed), and the filter cloth 18A covers one side of the filter cloth 18 (the side on which the annular concave portion 34 is formed). The filter cloth 18B is the filter cloth 18B.

As shown in FIGS. 7 and 8, the filter cloth 18A on one side (the side on which the annular convex portion 24 is formed) is fixed to an annular plate portion 15A, which will be described later, and is attached to a substrate in an area outside the annular plate portion 15A. They are arranged all the way to the peripheral edge of the portion 11. As shown in FIGS. 7 and 11, the filter cloth 18B on the other side (the side where the annular recess 34 is formed) is fixed to an annular plate part 15B, which will be described later, and has a substrate part in an area outside the annular plate part 15B. 11 are arranged all the way to the peripheral edge. In FIG. 7, the filter cloth 18 is conceptually shown by a two-dot chain line, and in FIGS. 8 and 11, the filter cloth 18 is conceptually shown as a patterned area. In the example of FIG. 7, the filter cloths 18A and 18B are also present in the portion sandwiched between the peripheral convex portions 14A and 14B, but the illustration of the filter cloths 18A and 18B in this portion (indicated by two-dot chain lines) is omitted. ing. In the example shown in FIG. 7 and the like, in each filter plate 10, the peripheral edge of the filter cloth 18A and the peripheral edge of the filter cloth 18B are connected, but the peripheral edges may not be connected. The filter cloth 18A only needs to be arranged so as to cover the inner surface of the central recess 12A at least in the area outside the through hole 16, and the covered area of the filter cloth 18A has the configurations shown in FIGS. 7, 8, 11, etc. but not limited to.

The filter press device 1 has a filter plate structure 3 shown in FIGS. 2, 3, 7, etc., in a state where adjacent filter plates 10 are in close contact with each other as shown in FIGS. 5(A) and 7, and in a state shown in FIG. It is possible to switch to a state in which adjacent filter plates 10 are separated as shown in B). Note that FIG. 5 is a diagram schematically showing a configuration of a part of the filter plate structure 3 viewed from above. FIG. 5(A) is a diagram showing a state in which adjacent filter plates 10 are in contact with each other. 5(A) and FIG. 7 show the state when the solid-liquid mixture is injected into the filter plate group 5. FIG. 5(B) shows the state when the residue (dehydrated cake) is discharged from the filter plate group 5.

The plurality of filter plates 10 are aligned in the thickness direction as shown in FIGS. 1, 2, and 3 (that is, aligned so that the thickness direction of each filter plate 10 is in the same direction), and The positions of the outer peripheral edges of the plates 10 (the positions of the outer peripheral edges in the plane direction perpendicular to the thickness direction) are aligned, and by moving each filter plate 10 along the rail in this aligned state, a plurality of filter plates 10 are aligned. Adjacent filter plates 10 in the filter plates 10 can be moved closer to each other and separated from each other. In the process of movement of the plurality of filter plates 10, the movement of each filter plate 10 in the left and right direction is regulated, the movement of each filter plate 10 in the vertical direction is also regulated, and each filter plate 10, for example, moves back and forth in the thickness direction. It is possible to move while maintaining a certain orientation.

When the plurality of filter plates 10 are stacked so that one filter plate 10 and another filter plate 10 are in close contact with each other as shown in FIG. 5(A) and FIG. The ten annular protrusions 24 enter into the annular recesses 34 of the other filter plates 10 and press the inner surface of the annular recesses 34, thereby causing the first pressing surface 22 of the one filter plate 10 and the first pressing surface 22 of the other filter plate 10 to The two pressing surfaces 32 are configured to press against each other. In the example of FIG. 7, two filter cloths 18A and 18B that respectively cover the two filter plates 10 are interposed between the first pressing surface 22 of one filter plate 10 and the second pressing surface 32 of the other filter plate 10. In this state, the first pressing surface 22 of one filter plate 10 and the second pressing surface 32 of the other filter plate 10 press against each other. That is, the first pressing surface 22 of one filter plate 10 and the second pressing surface 32 of another filter plate 10 are connected to each other via the filter cloth 18A of one filter plate 10 and the filter cloth 18B of the other filter plate 10. press each other. Also, two filter cloths 18A and 18B are interposed between the annular convex part 24 and the annular concave part 34, and cover the two filter plates 10, respectively. The annular convex portion 24 and the annular concave portion 34 press against each other in a state in which the filter cloths 18A and 18B are interposed between the inner surface and the inner surface. That is, the annular convex portion 24 of one filter plate 10 presses the inner surface of the annular recess 34 via the filter cloth 18A of one filter plate 10 and the filter cloth 18B of the other filter plate 10.

As shown in FIGS. 2, 3, and 7, when the solid-liquid mixture is introduced, each filter plate 10 of the filter plate group 5 is in a stacked state in close contact with the adjacent filter plate 10, as shown in FIG. A solid-liquid mixture is poured through the through hole 16 by a first injection device 60 (for example, a slurry supply device including a pump). Then, the solid-liquid mixture press-fitted into the filter plate group 5 through the through holes 16 accumulates in the filter chamber (filtration chamber) 40 shown in FIG. The moisture is discharged from the small gap in the filter cloth 18 to the substrate portion 11 side (that is, the back side of the filter cloth 18). Then, a dehydrated cake is formed as a residue between adjacent filter plates 10 (specifically, between filter cloths in adjacent filter plates 10). Note that the dehydrated cake is an object obtained by removing a certain amount of water from the solid-liquid mixture 7 injected into the filter chamber 40.

As shown in FIG. 7, each filter plate 10 is provided with a substrate portion 11. The substrate portion 11 is configured in a plate shape. The substrate portion 11 includes a plate-like body 11A and peripheral edge convex portions 14A and 14B. In the substrate portion 11, one of the two center-side recesses 12, 12A of the center-side recesses, and one of the two peripheral-side projections 14, 14A of the peripheral-side convex portions 14, are arranged on one plate side (the above-mentioned one side). side). Further, in the substrate portion 11, the other central recess 12B of the two central recesses 12 and the other peripheral convex portion 14B of the two peripheral convex portions 14 are located on the other plate surface side (as described above). the other side). The filter plate 10 is provided with a filter cloth 18A so as to cover the inner wall of one central recess 12A, and a filter cloth 18B so as to cover the inner wall of the other central recess 12B. Drainage channels 28 (one drainage channel 28A and the other drainage channel 28B) leading to the outside of the filter plate 10 are provided on the back side of the filter cloth 18 in one central recess 12A and the other central recess 12B. . The drainage channel 28 is a flow channel that communicates with the inter-member space between the drainage plate 13 (covering portion) and the waterproof material 100 and the external space of the filter plate 10, and is a flow channel that communicates with the external space of the filter plate 10 from the above-mentioned inter-component space to the above-mentioned external space. It is a channel through which liquid flows. The inter-member space is a gap space between the drain plate 13 (covering portion) and the waterproof material 100, and is configured such that liquid flows from this gap space into the space within the drain channel 28.

In each of the central recess 12A and the other central recess 12B of the filter plate 10, the inner wall (inner surface) on the deepest side in the depth direction has a passage through which the liquid passes in the thickness direction thereof. Drain plates 13 (one drain plate 13A and the other drain plate 13B) each having a water portion are provided. The drainage plate 13 corresponds to an example of a covering part, and is arranged to overlap with the plate-like body 11A (plate part) so as to cover the plate-like body 11A. Each of the water passage portions of the drainage plates 13A and 13B may be formed by a large number of holes, or may be formed by a groove or a notch. The drain plates 13A and 13B may have any structure as long as they can allow water to pass from the front side to the back side while supporting the filter cloth 18 on the front side, and may have a structure in which a plurality of through holes are formed in the plate-like body. It may be a simple structure, a net-like structure, or the like.

In the substrate section 11, a plate-like body 11A whose both sides in the thickness direction are covered by each drainage plate 13 is provided inside each drainage plate 13 in the thickness direction (thickness direction of the filter plate 10). There is. The plate-shaped body 11A corresponds to an example of a plate portion. The plate-shaped body 11A is, for example, made of or mainly made of a metal material, and is made of, for example, a metal plate. As shown in FIG. 7, one of the peripheral convex portions 14A is a rectangular frame fixed along the peripheral edge of the plate-like body 11A on one side of the plate-like body 11A. One peripheral edge side convex portion 14A corresponds to an example of a frame portion, is formed in an annular shape, is overlapped with the plate-like body 11A (plate portion), and is fixed to the plate-like body 11A. Further, the other peripheral edge convex portion 14B is a rectangular frame fixed along the peripheral edge of the plate-shaped body 11A on the other side of the plate-shaped body 11A. One drainage plate 13A is fixed in such a manner that its peripheral edge is sandwiched between the plate-like body 11A and the inner edge of the frame forming the peripheral convex portion 14A. One of the drainage plates 13B is fixed such that its peripheral edge is sandwiched between the plate-like body 11A and the inner edge of the frame forming the peripheral convex portion 14B.

Drain channels 28A and 28B communicating with the outside of the filter plate 10 are formed at predetermined positions on the back side of each drain plate 13 (one drain plate 13A and the other drain plate 13B) in the plate-shaped body 11A. Both drainage channels 28A and 28B are configured as water passages through which water passes.

A drainage channel 28A formed on the back side of the filter cloth 18A in one central recess 12A is, for example, as shown in FIGS. 7 to 10. In the examples shown in FIGS. 7 to 9, a plurality of drainage channels 28A are formed in a groove shape on the lower end side of one side of the substrate section 11 (lower end side in the vertical direction at the time of installation), and in each drainage channel 28A, It is designed to allow water to flow through it. One end (upper end) of the plurality of drain channels 28A is located on the back side of the drain plate 13A, and a part of the back surface of the drain plate 13A faces the internal space of each drain channel 28A. A gap in the drain plate 13A that communicates with the internal space of the drain channel 28A is configured such that water passing through the gap flows into the drain channel 28A. The other end (lower end) side of each drainage channel 28A reaches the lower end of the filter plate 10, and the internal space of each drainage channel 28A communicates with the space outside the filter plate 10. . Note that it is desirable that a space exists between the back surface of the drain plate 13A and the surface of the plate-like body 11A, and that this space communicates with each drain channel 28A. This makes it easier for the moisture that has flowed into the back side of the drain plate 13A to flow to the outside of the filter plate 10 via each of the drain channels 28A.

A drainage channel 28B formed on the back side of the filter cloth 18B in one of the central recesses 12B is as shown in FIGS. 7 and 11 to 13, for example. In the examples shown in FIGS. 7 and 11 to 13, a plurality of drainage channels 28B are formed in the shape of a groove on the lower end side of one side of the substrate section 11 (lower end side in the vertical direction at the time of installation), and each drainage channel 28B is formed in the shape of a groove. The structure is such that water can flow in the channel 28B. One end (upper end) of the plurality of drain channels 28B is located on the back side of the drain plate 13B, and a part of the back surface of the drain plate 13B faces the internal space of each drain channel 28B. A gap in the drain plate 13B that communicates with the internal space of the drain channel 28B is configured such that water passing through the gap flows into the drain channel 28B. The other end (lower end) side of each drainage channel 28B reaches the lower end of the filter plate 10, and the internal space of each drainage channel 28B communicates with the space outside the filter plate 10. . Note that a space exists between the back surface of the drainage plate 13B and the surface of the plate-like body 11A, and it is desirable that this space communicates with each drainage channel 28B, and is configured in this way. This makes it easier for the moisture that has flowed into the back side of the drain plate 13B to flow to the outside of the filter plate 10 via each of the drain channels 28B.

In addition, in the examples of FIGS. 6 to 14, a configuration in which a plurality of drainage channels 28 are provided on the lower end side of the filter plate 10 is illustrated, but the water flowing through the filter cloth 18 and flowing into the drain plate 13 side is removed from the filter plate 10. Any flow path that can be used to discharge water to the outside of 10 may be used.

As shown in FIGS. 7, 10, 13, and 14, the waterproof material 100 is made of a waterproof plate material or a waterproof sheet material. The waterproof material 100 is configured to be thinner than the plate-like body 11A (plate portion). The waterproof material 100 may be a plate material mainly made of non-metallic material, or may be a sheet material mainly made of non-metallic material. Examples of non-metallic materials include polymeric materials such as resin materials, ceramic materials, and the like. In a typical example, the waterproof material 100 is made of a resin plate or a resin sheet.

The waterproofing material 100 is sandwiched between the plate surface of the plate-like body 11A (plate portion) and the other surface (the surface on the plate-like body 11A side) of the drainage plate 13 (covering portion). One waterproof material 100A is sandwiched between one drainage plate 13A and a plate-like body 11A. The other waterproof material 100B is sandwiched between the other drainage plate 13B and the plate-like body 11A. In the filter plate 10 configured in this manner, liquid flows between the surface of the waterproof material 100 and the other surface (the surface of the drain plate 13 on the plate-like body 11A side). In the filter plate 10, the other surface of the drain plate 13 (the surface of the drain plate 13 on the plate-like body 11A side) has a convex surface that is convex toward the waterproof material 100 and a concave surface that is concave on the side opposite to the waterproof material 100. It is said to have an uneven surface. The drainage plate 13 is configured in a plate shape and has a hole penetrating through the plate in the thickness direction, but a groove or a depression may be formed on the other side of the drainage plate 13. .

As shown in FIGS. 6 to 13, the filter plate 10 has a pair of annular plate portions 15A and 15B fixed in one central recess 12A and the other central recess 12B of the base plate 11, respectively. The annular plate portions 15A, 15B are formed with through-hole side protrusions 17A, 17B that protrude in the thickness direction of the filter plate 10. A plurality of through hole side protrusions 17A on one side protrude from the annular plate portion 15A on the one side, and the plurality of through hole side protrusions 17A are arranged in the through hole 16 as shown in FIGS. It is arranged so as to surround the through hole 16 at its periphery. Similarly, a plurality of through-hole side protrusions 17B on the other side protrude from the annular plate portion 15B on the other side, and the plurality of through-hole side protrusions 17B are arranged so as to penetrate through the annular plate 15B as shown in FIGS. They are arranged around the hole 16 so as to surround the through hole 16 . The through hole 16 is formed to communicate from one of the pair of annular plates 15A and 15B to the other annular plate 15B. A through hole 16 is formed inside the cylindrical portion that connects the portions 15A and 15B. In this configuration, as shown in FIG. 7, when one side of one filter plate 10 and the other side of another filter plate 10 are stacked so as to press against each other, The through-hole side protrusion 17A and the through-hole side protrusion 17B on the other side of the other filter plate 10 are configured to face each other. When the through-hole side protrusions 17A on one side of one filter plate 10 and the through-hole side protrusions 17B on the other side of the other filter plate 10 face each other as shown in FIG. 2, these through-hole side protrusions The interval between the two protrusions 17A and 17B (the interval between the tips) is smaller than the interval between the plate surfaces of the annular plate parts 15A and 15B, and may be 0 (that is, the distance between the opposing through-hole side protrusions 17A and 17B may be in contact). In addition, in the example of FIG. 2 etc., the filter cloth 18 is not interposed between the opposing through-hole side protrusions 17A and 17B.

In one center side recess 12A and the other center side recess 12B, there are drain plate side protrusions 19 (one drain plate side protrusion 19A and the other drain Plate-side protrusions 19B) are respectively formed. One of the drainage plate side protrusions 19A is fixed to at least either the drainage plate 13A or the plate-like body 11A, and has a configuration in which it protrudes from the surface of the drainage plate 13A in the thickness direction (thickness direction of the filter plate 10). Eggplant. The drain plate side protrusion 19A has a tapered shape that becomes thinner as it approaches the tip side in its protruding direction. In the examples shown in FIGS. 8 and 9, a plurality of drain plate side protrusions 19A having such a configuration are arranged so as to surround the through hole 16. As shown in FIG. The other drain plate side protrusion 19B is fixed to at least either the drain plate 13B or the plate-like body 11A, and has a configuration in which it protrudes from the surface of the drain plate 13B in the thickness direction (thickness direction of the filter plate 10). Eggplant. The drain plate side protrusion 19B has a tapered shape that becomes thinner as it approaches the tip side in its protruding direction. In the examples shown in FIGS. 11 and 12, a plurality of drain plate side protrusions 19B having such a configuration are arranged so as to surround the through hole 16. When one side of one filter plate 10 and the other side of another filter plate 10 are stacked so as to press each other as shown in FIG. The drain plate side protrusion 19A and each drain plate side protrusion 19B on the other side of the other filter plate 10 are configured to face each other. When the drain plate side protrusions 19A on one side of one filter plate 10 and the drain plate side protrusions 19B on the other side of the other filter plate 10 face each other as shown in FIG. 7, these drain plate side protrusions The distance between the drain plates 19A and 19B (the distance between the tips) is smaller than the distance between the drainage plates 13A and 13B that face each other. In the example shown in FIG. 7, the filter cloths 18A, 18B are interposed between the opposing drain plate side protrusions 19A, 19B, and the filter cloths 18A, 18B are interposed between the opposing drain plate side protrusions 19A, 19B. It's trapped.

(Configuration of holding device, etc.)
The filter press device 1 shown in FIGS. 1 to 3 has such a filter plate structure 3. As shown in FIGS. 2 and 3, the filter press device 1 holds a plurality of filter plates 10 constituting the filter plate structure 3 in a predetermined posture (i.e., a posture in which the thickness direction of each filter plate 10 is in the same direction). A plurality of filter plates 10 can be moved in the front-rear direction along the guide rail 90 (guide rails 90A, 90B) with the outer peripheral edges of each filter plate 10 aligned in the same position. By such a moving operation, adjacent filter plates among the plurality of filter plates 10 can approach and separate from each other.

Although illustration is omitted in FIGS. 8 to 13, as shown in FIGS. 2 to 4, each filter plate 10 has a structure that protrudes laterally from both left and right sides of the base plate 11 of each filter plate 10. A pair of protrusions 41 and 42 are provided that protrude in such a manner. These pair of protrusions 41 and 42 function as a pair of supported parts. The pair of protrusions 41 and 42 are supported while being placed on guide rails 90A and 90B, respectively. In the plurality of filter plates 10, a pair of protrusions 41 and 42 move while being placed on guide rails 90A and 90B. The pair of guide rails 90A and 90B correspond to an example of a support member and function to support the protrusions 41 and 42. During such movement, each filter plate 10 moves in the front-rear direction (thickness direction of each filter plate 10) while maintaining a predetermined posture shown in FIGS. 3, 4, etc. In addition to the configuration shown in FIGS. 3 and 4, the filter press device 1 may be provided with an additional mechanism for maintaining the posture of the filter plate 10.

As shown in FIGS. 2 and 3, in addition to the filter plate structure 3 described above, the filter press device 1 includes a holding device 50, a first injection device 60, a second injection device 70, a supply path 62, a supply path 72, The first switching section 81, the second switching section 82, and the like are provided. In FIG. 2 and the like, the first injection device 60 is also referred to as a slurry supply device, and the second injection device 70 is also referred to as an air supply device. The supply path 62 is a path for supplying the solid-liquid mixture 7 from the first injection device 60 to the filter plate group 5.The supply path 72 is a path for supplying air from the second injection device 70 to the filter plate group 5. be. The first switching unit 81 connects the supply path 62 to a state in which the solid-liquid mixture can be supplied from the first injection device 60 to the filter plate group 5 (open state) and a state in which the solid-liquid mixture cannot be supplied (blocked). This is a device that switches between the two states. The second switching unit 82 is a device that switches the supply path 72 between a state where air can be supplied from the second injection device 70 to the filter plate group 5 (open state) and a state where air cannot be supplied (blocked state). It is. Although not shown in FIGS. 2 and 3, the filter press device 1 is configured to operate the holding device 50, the first injection device 60, the second injection device 70, the first switching section 81, and the second switching section 82. It also includes a control device (for example, an information processing device such as a computer) that controls (operation timing, control amount, etc.).

The holding device 50 includes a pair of guide rails 90 (guide rails 90A, 90B), a drive device 54, and fixed walls 51, 52, and has a configuration in which these are integrally assembled. The drive device 54 has an action part 54C that acts on the filter plate 10 at the end of the filter plate group 5 (the end on the fixed wall 52 side), a drive shaft 54B connected to the action part 54C, and a drive shaft 54B. 54A of drive parts which move in the direction (plate thickness maintenance direction of each filter plate 10 of the filter plate group 5). When the drive section 54A moves the action section 54C toward the fixed wall 51 via the drive shaft 54B, the plurality of filter plates 10 are pressed against the fixed wall 51 while maintaining a predetermined posture, as shown in FIGS. 2 and 3. Then, adjacent filter plates in the filter plate group 5 come into contact with each other. On the other hand, when the drive section 54A moves the action section 54C toward the fixed wall 52 via the drive shaft 54B, adjacent filter plates in the filter plate group 5 are spaced apart from each other. For example, if a spacing regulating part (not shown) is provided to regulate the spacing so that the maximum spacing between adjacent filter plates becomes a predetermined spacing in the plurality of filter plates 10, the action part 54C of the filter plate group 5 may When an operation is performed to move the filter plate 10 toward the fixed wall 52 while engaging or holding the filter plate 10 at the end (end on the fixed wall 52 side), adjacent filters between the respective filter plates Each filter plate begins to move so that the plates are spaced apart. The example described here is just an example, and the plurality of filter plates 10 are arranged in a predetermined posture (that is, in a posture in which the thickness direction of each filter plate 10 is in the same direction and the outer peripheral edge of each filter plate 10 is The holding device may have other configurations as long as the configuration allows the filter plates to approach and separate from each other while aligning the filter plates (positions in which the positions are aligned).

In this manner, the holding device 50 moves the action portion 54C toward the fixed wall 51, thereby arranging the plurality of filter plates 10 in a stacked state as shown in FIG. 2 and FIG. In between, the annular convex portion 24 of one filter plate 10 enters into the annular recess 34 of the other filter plate 10 and presses the inside of the annular recess 34, and the first pressing surface 22 of one filter plate 10 and the other The filter plate 10 can be held in a holding state (first holding state) in which the second pressing surface 32 of the filter plate 10 presses against each other.

The first injection device 60 is a transfer device that transfers the solid-liquid mixture from a solid-liquid mixture storage section (not shown, such as a slurry storage tank) to the filter plate group 5 side, and the first switching section 81 is in an open state. When the supply path 62 is in communication with the through hole 16 at the end of the filter plate group 5, the solid-liquid mixture can be injected into the filter plate group 5 via the supply path 62. The first injection device 60 is inserted into the through-hole of the filter plate 10 at one end of the filter plate group 5 when the holding device 50 holds the filter plate group 5 in the first holding state as shown in FIGS. 16 to inject the solid-liquid mixture 7 into the plurality of filter plates 10. The first switching unit 81 is a device that switches between a first stop state in which fluid flows in and out of one end of the filter plate group 5 is stopped, and a first release state in which the first stop state is canceled. The first switching unit 81 is constituted by a known electromagnetic valve that switches the supply line 62 (pipe line) between an open state and a blocked state. The opening operation and the blocking operation of the first switching section 81 are controlled by, for example, a control device (not shown).

The second injection device 70 is configured as a known air supply device capable of pumping air, and the second switching portion 82 is in an open state and the supply path 72 is connected to the filter plate group 5. Air can be injected into the filter plate group 5 through the supply path 72 while communicating with the through hole 16 at the end of the filter plate group 5 . When the holding device 50 holds the filter plate group 5 in the first holding state as shown in FIG. 2 and FIG. It operates to inject air into the plurality of filter plates 10 from the through holes 16 at the ends. The second switching unit 82 is a device that switches between a second stop state in which fluid flows in and out of the other end of the filter plate group 5 is stopped, and a second release state in which the second stop state is canceled. The second switching unit 82 is constituted by a known electromagnetic valve that switches the supply line 72 (pipe line) between an open state and a blocked state. The opening operation and the blocking operation of the second switching section 82 are controlled by, for example, a control device (not shown).

(Injection operation and discharge operation)
In the filter press device 1, before the solid-liquid mixture 7 is injected, the holding device 50 operates the filter plate group 5 to hold the filter plate group 5 in the above-described first holding state. In the first holding state, each of the plurality of filter plates 10 is in close contact with the adjacent filter plate 10, as shown in FIGS. 2, 3, and 7. In the filter press device 1, when the holding device 50 holds the filter plate group 5 in the first holding state as shown in FIG. 3 and FIG. (blocked state) and the first switching unit 81 is set to the first release state (the supply path 62 is opened), and in this state, the first injection device 60 injects solid and liquid into the inside of the filter plate group 5. A solid-liquid mixture injection operation is performed to inject the mixture 7. By such a solid-liquid mixture injection operation, each filter chamber 40 configured in the filter plate group 5 is filled with the solid-liquid mixture 7, and a portion of the water contained in the solid-liquid mixture 7 is It is discharged from the drainage channel 28. Note that the operation timing, operation time, etc. of each device are controlled by a control device (not shown).

In the filter press device 1, after the first injection device 60 injects the solid-liquid mixture 7 into the filter plate group 5, the holding device 50 maintains the first holding state as shown in FIGS. 2, 3, and 7. , the first switching section 81 is switched to the first stopped state (the state where the supply path 62 is cut off), and the second switching section 82 is switched to the second open state (the state where the supply path 72 is opened). In this state, the second injection device 70 performs an air injection operation to inject air into the filter plate group 5 . Through this air injection operation, air is supplied into each filter chamber 40 configured in the filter plate group 5, and the pressure of the air causes water to be removed from the solid-liquid mixture 7 remaining in the filter chamber 40. Excretion is promoted. Specifically, during the air injection operation, air is flowed from the through hole 16 side at the other end of the filter plate group 5 to the drainage channel 28 side of each filter plate 10, and the inside of the filter plate group 5 is The liquid (moisture) of the solid-liquid mixture 7 present in the solid-liquid mixture 7 is discharged to the outside of the filter plate group 5 through the drainage channel 28 together with air. Note that the operation timing, operation time, etc. of each device are controlled by a control device (not shown).

The filter press device 1 performs a discharge operation to discharge the residue (dehydrated cake) remaining in the filter chamber 40 after the solid-liquid mixture injection operation (specifically, after the air injection operation). In the filter press device 1, after the air injection operation, the drive section 54A of the holding device 50 moves the action section 54C to the other side in the front-rear direction (toward the fixed wall 52 side) via the drive shaft 54B, so that the filter plate group 5 In this case, adjacent filter plates are spaced apart from each other. Specifically, during the discharge operation, the holding device 50 sequentially moves each filter plate 10 from the filter plate 10 at the end of the filter plate group 5 to the other side in the front-rear direction (to the drive unit 54A side). During this discharge operation, in the process in which the holding device 50 sequentially moves each filter plate 10 to the other side in the front-rear direction, the vicinity of each filter plate 10 changes as shown in FIG. 5(A) to FIG. 5(B), A filter plate 10 that recently started moving to the other side in the front-rear direction and a filter plate 10 adjacent to one side of the filter plate 10 in the front-rear direction (a filter plate 10 that is next scheduled to move to the other side in the front-rear direction); The residue (dehydrated cake 7A) is discharged downward between the two. That is, when the filter plate 10 that has recently started moving is separated from the next filter plate 10 that is maintained in a stationary state, the residue (dehydrated cake 7A) held between the two filter plates 10 is removed. ) falls downward. During the discharge operation, the holding device 50 holds the filter plate 10 that has recently started to move to the other side in the front-rear direction, and the next filter plate 10 (the filter plate 10 that has recently started to move to the other side in the front-rear direction). When the distance between the filter plates 10) adjacent to one side reaches the maximum interval, each filter plate 10 in order to the other side in the front-back direction.

By such a discharge operation, it is possible to perform a discharge operation in which the distance between adjacent filter plates is increased and the remaining material (dehydrated cake 7A) is dropped downward, as shown in FIG. 5(B). As shown in FIGS. 5(A) and 5(B), in the process in which two adjacent filter plates 10, 10 change from a close state to a separated state, movement of each filter plate 10 in the left and right direction is restricted, and each filter plate The vertical movement of filter plate 10 is also restricted, and each filter plate 10 can move while maintaining a posture in which, for example, the plate thickness direction is the front-back direction and the direction in which the side portions 10A extend is the vertical direction as shown in FIG. In addition, in the process of each filter plate 10 moving, a slight change in the posture of each filter plate 10 may be allowed. The side portion 10A of each filter plate 10 constitutes the side portion 5A of the filter plate group 5. Specifically, one side portion 10A of the plurality of filter plates 10 is arranged in front and back, and constitutes one side portion 5A of the filter plate group 5. Similarly, the other side portions 10A of the plurality of filter plates 10 are arranged in front and back to constitute the other side portion 5A of the filter plate group 5.

(Cleaning operation)
The filter press device 1 includes a drainage receiving section 160 and a cleaning device 100. The drainage receiving part 160 is a part that receives the drainage water flowing from the plurality of filter plates 10 and guides the drainage water toward a discharge path. The cleaning device 100 is a device that cleans the drainage receiving section 160.

The drainage receiving portion 160 functions as a gutter that allows drainage to flow. The drainage receiving part 160 has a function of receiving the drainage water falling from the plurality of filter plates 10 so as to accommodate it inside itself, while being located below the plurality of filter plates 10 . The drainage receiving portion 160 has, for example, a longitudinal box-like or groove-like shape that is open on the upper side.

The cleaning device 100 includes a water discharge section 150, a positioning section, pipes (introduction pipe 132, second supply pipe 134), a valve 122, a pump 120, a washing water storage section 110, and the like.

The water discharge section 150 is a section that discharges wash water toward the drainage receiving section 160. The water discharge section 150 has a discharge port 152 that discharges cleaning water. The water discharge part 150 may have one discharge port 152 or a plurality of discharge ports 152.

The water discharge part 150 is fixed to the drainage receiving part 160 by a connecting member such as a screw or a bolt, for example. In this configuration, the connecting member corresponds to an example of a positioning section. In the representative example described below, the water discharge section 150 is fixed to the drainage receiving section 160. However, the present invention is not limited to this example, and the water discharge section 150 may be fixed to a location different from the drainage receiving section 160. Alternatively, the water discharging section 150 may be configured to be movable by a moving device such as a robot, and the position may be adjusted to a position where washing water can be supplied to the drainage receiving section 160. In this case, the moving device corresponds to an example of a positioning section.

In the cleaning device 100 configured in this manner, the cleaning water discharged from the discharge port 152 whose position is fixed or adjusted by the positioning section is supplied into the drainage receiving section 160. The cleaning water supplied from the discharge port 152 into the drainage receiving section 160 causes the drainage inside the drainage receiving section 160 to flow toward the discharge path 162 side. The discharge path 162 may be any flow path that can guide the waste water in the drainage receiving section 160 to the outside, and may be formed of a pipe (for example, a flexible pipe), and may be a flow path that is open at the top. (for example, a groove). The discharge path 162 may have a structure in which the inside thereof communicates with the inside of the drainage receiving part 160 only when the drainage receiving part 160 is in the lower position, or may have a structure in which it always communicates with the inside of the drainage receiving part 160. good.

The drainage receiving part 160 corresponds to an example of a first receiving part. As shown in FIGS. 3 and 4, the drainage receiving part 160 is displaced between a lower position where it receives the liquid falling from the plurality of filter plates 10 and a retracted position where it is retracted from the lower position. The drainage receiver 160 is guided by guide rails 166A, 166B and driven by a drive device 168. In the examples of FIGS. 3 and 4, the drainage receiving portion 160 in the retracted position is indicated by the reference numeral 160Z. In a typical example, cleaning water is supplied from the discharge port 152 whose position is fixed or adjusted by the positioning section into a drainage receiving section 160 (first receiving section) located at a lower position. However, the present invention is not limited to this example, and the configuration may be such that cleaning water is supplied from the discharge port 152 whose position is fixed or adjusted by the positioning section into the drainage receiving section 160 (first receiving section) located at the retreat position. It's okay.

As shown in FIG. 1, the cleaning device 100 includes a plurality of pipe sections (an introduction pipe 132, a first supply pipe 136, and a second supply pipe 134), a pump 120, and a valve 122. The introduction pipe 132 is a pipe that introduces wash water from outside (in the example of FIG. 1, the wash water storage section 110) and transfers it to the downstream side. The first supply pipe 136 is a path for supplying cleaning water to the filter plate cleaning device 140. The second supply pipe 134 is a path for supplying cleaning water to the water discharge section 150. The valve 122 is a valve that can switch the destination of the cleaning water introduced from the introduction pipe 132 to at least the first supply pipe 136 and the second supply pipe 134. The valve 122 is configured as a three-way valve, for example. The valve 122 may be a valve that manually switches the route, or may be a valve that switches the route under control.

The filter plate cleaning device 140 is a cleaning device that supplies cleaning water supplied from the first supply pipe 136 to the plurality of filter plates 10. The filter plate cleaning device 140 may employ various configurations of known filter plate cleaning devices.

(Example of effect)
Since the cleaning device 100 can supply cleaning water from the water discharge section 150 into the drainage receiving section 160, solids that have entered the drainage receiving section 160 are easily washed away by the washing water, and solids are not contained inside the drainage receiving section 160. It is easy to prevent continued precipitation or accumulation. Therefore, in this cleaning device 100, when the waste water flowing from the plurality of filter plates 10 of the filter press device 1 is guided through the waste water receiving portion 160, it is easy to prevent solids from accumulating in the waste water receiving portion 160. Moreover, since the position of the water outlet 152 is fixed or adjusted by the positioning section, it is easy to reduce or omit the labor required by the operator to fix or adjust the position of the water outlet 152.

Since the cleaning device 100 can guide the waste water to the discharge path 162 side by the flow caused by the wash water, it is possible to further suppress the accumulation of solids in the waste water receiving part 160.

Even if the cleaning device 100 has a configuration in which the drainage receiving portion 160 can be displaced between a lower position and a retracted position, cleaning water can be supplied into the drainage receiving portion 160 by the water discharging portion 150 whose position is fixed or adjusted. This makes it easy to prevent solids from accumulating in the drainage receiving portion 160.

In the cleaning device 100, since the water discharge part 150 is fixed to the drainage receiving part 160, it is possible to suppress the displacement of the cleaning water caused by the misalignment of the positional relationship between the water discharge part 150 and the drainage receiving part 160. The water can be more stably supplied into the drainage receiving section 160.

The cleaning device 100 can switch the supply destination of the cleaning water introduced from the introduction pipe 132 to the drainage receiving section 160 and the filter plate cleaning device 140, and can switch the cleaning water supplied through the common path to different sources. It can be used for various purposes.

<Second embodiment>
The following description relates to a cleaning device 200 and a filter press device 201 for a filter press device according to a second embodiment. The filter press device 201 of the second embodiment shown in FIG. 14 only has a structure in which a communication pipe 230 is provided between the second supply pipe 134 arranged at a fixed position so as to introduce washing water and the water discharge part 150. The filter press device 1 is different from the filter press device 1 of the first embodiment, and the other structure and contents are the same as the filter press device 1 of the first embodiment. The cleaning device 200 for a filter press device according to the second embodiment has a structure in which a communication pipe 230 is provided between the second supply pipe 134 and the water discharge part 150. 100, the other structure and contents are the same as the cleaning device 100 for a filter press device of the first embodiment.

The drainage receiving section 160 functions as an example of a first receiving section. The drainage receiving portion 160 is displaced between a lower position where it receives the liquid falling from the plurality of filter plates 10 constituting the filter press device 201 and a retracted position where it is retracted from the lower position. In the retracted position, part or all of the drainage receiving part 160 is arranged in a position where it does not vertically overlap with the plurality of filter plates 10. The water discharge section 150 is fixed to the drainage receiving section 160. The water discharge part 150 is fixed to the drainage receiving part 160 by a connecting member such as a screw or a bolt, for example. In this configuration, the connecting member corresponds to an example of a positioning section. Cleaning water is supplied from the discharge port 152 of the water discharge part 150 whose position is fixed by the positioning part into the drainage receiving part 160 located at the lower position or the retracted position. The wash water may be adapted to be automatically discharged subject to the lower position, and may be adapted to be discharged automatically or manually, whether in the lower position or the retracted position. Good too.

Similar to the first embodiment, the cleaning water is water supplied through an introduction pipe (second supply pipe 134) provided at a position different from the water discharge part 150, and the drainage receiving part 160 is connected to the introduction pipe 132. The structure is such that it is relatively displaced. The second supply pipe 134 is fixed to a structure such as a building, and has a fixed position. The cleaning device 200 includes a communication pipe 230. The communication pipe 230 forms a path through which wash water flows from the introduction pipe 132 side to the water discharge section 150 side. One end of the communication pipe 230 is fixed to the end of the second supply pipe 134 by a connecting part 235, and cleaning water is introduced from the end of the second supply pipe 134. The other end of the communication pipe 230 is fixed to the water discharge section 150 and functions to flow cleaning water to the discharge port 152. The communication pipe 230 is configured to be flexible and deformable, and deforms when the drainage receiving portion 160 moves. The communication pipe 230 is constituted by a flexible pipe such as a hose.

<Third embodiment>
The following description relates to a cleaning device 300 and a filter press device 301 for a filter press device according to the third embodiment. A filter press device 301 according to the third embodiment shown in FIG. 15 differs from the filter press device 1 according to the first embodiment only in that a water discharge part 150 is held in a holding part 330, and the other structure and contents are the same as those in the third embodiment. This is the same as the filter press device 1 of the first embodiment. The cleaning device 300 for a filter press device according to the third embodiment differs from the cleaning device 100 for a filter press device according to the first embodiment only in that the water discharging part 150 is held in a holding part 330, and the other structure is The contents are the same as the cleaning device 100 for a filter press device of the first embodiment.

The drainage receiving part 160 has the same configuration as the first and second embodiments, can be similarly displaced, and functions as an example of the first receiving part. The drainage receiving portion 160 is displaced between a lower position where it receives liquid falling from the plurality of filter plates 10 and a retracted position where it is retracted from the lower position. Cleaning water is supplied from the discharge port 152 whose position is fixed by the positioning section into the drainage receiving section 160 located at a lower position. The holding portion 330 is fixed to a structure such as a building, and has a fixed position. The holding part 330 includes a holding body (for example, a frame, etc.) that is a structure whose position is fixed, and a fixing member such as a screw member for fixing the water discharge part 150 to the holding body. The holding section 330 corresponds to an example of a positioning section. Specifically, the water discharge part 150 is fixed by the holding part 330 at a position different from the drainage receiving part 160, and is positioned so that it cannot be displaced. The drainage receiving section 160 is movable relative to the water discharging section 150. When the drainage receiving part 160 is in the above-mentioned lower position, the positional relationship is such that washing water is supplied from the water discharging part 150 to the drainage receiving part 160. Therefore, if washing water is discharged from the water discharge part 150 when the drainage receiving part 160 is in the above-mentioned lower position, this washing water flows into the drainage receiving part 160 and the inside of the drainage receiving part 160 is cleaned.

<Other embodiments>
The present disclosure is not limited to the embodiments described above and illustrated in the drawings. For example, the features of the embodiments described above or below may be combined in any combination as long as they do not contradict each other. Furthermore, any feature of the embodiments described above or below may be omitted unless explicitly stated as essential. Furthermore, the embodiment described above may be modified as follows.

In the above-described embodiment, an example of a solid-liquid mixture has been described, but the solid-liquid mixture is other than the above-mentioned example, and includes at least a liquid and a solid (for example, at least a powder, a powder, or a granule). (any one) may be mixed. For example, the solid-liquid mixture is not limited to muddy water or the like, but may also be food or food materials that are a mixture of liquid and solid. Alternatively, the solid-liquid mixture may be a material for industrial products that is a mixture of solid and liquid.

In the above-described embodiment, the filter plate 10 has a rectangular configuration when viewed from the front, but the shape of the filter plate is not limited to the rectangular shape when viewed from the front. The shape of the outer edge of the filter plate may be a polygonal shape other than a quadrangle, a part or all of the outer edge may be curved, or may have another structure.

In the above-described embodiment, the filter plate group 5 has a configuration in which a plurality of filter plates 10 having a similar configuration are lined up, but the filter plate group 5 may have a configuration in which a filter chamber is configured inside the filter plate group 5. Bye. For example, the filter press device may include two or more types of filter plates, or may have a structure in which a frame is interposed between the filter plates.

In the above-described embodiment, the annular protrusion 24 and the annular recess 34 are provided in the filter plate structure 3, and the annular protrusion 24 enters into the annular recess 34 when the plurality of filter plates 10 are brought into close contact with each other. , but is not limited to this configuration. For example, the position of the annular convex portion 24 may be a flat surface similar to the first pressing surface 22. That is, the first pressing surface 22 may extend to the position of the annular protrusion 24 without the annular protrusion 24 existing. Similarly, the position of the annular recess 34 may be a flat surface similar to the second pressing surface 32. That is, the second pressing surface 32 may extend to the position of the annular recess 34 without the annular recess 34 existing.

In the above-described embodiment, the drainage receiving section 160 that receives drainage water falling from the plurality of filter plates 10 is illustrated as an example of the drainage receiving section, but the present invention is not limited to this example. For example, the second receiving part 170 that receives the waste water flowing through the discharge path 162 may be a waste water receiving part. In this example, the water discharge section may be fixed or adjustable by the positioning section so as to supply cleaning water to the second receiving section 170. In the example of FIG. 1, a box-shaped second receiving part 170 is capable of receiving and accommodating the wastewater flowing through the discharge path 162, and a valve 178 provided in the second receiving part 170 can be opened and closed. ing. When the valve 178 is open, the wastewater contained in the second receiving part 170 is discharged downward via the valve 178, and when the valve 178 is closed, the discharge via the valve 178 is blocked. be done. In such a configuration, for example, if cleaning water is supplied into the second receiving part 170 at a certain level of water pressure while opening the valve 178, the waste water can be easily discharged from the second receiving part 170.

It should be noted that the embodiments disclosed herein are illustrative in all respects and should not be considered restrictive. The scope of the present invention is not limited to the embodiments disclosed herein, and includes all modifications within the scope indicated by the claims or within the scope equivalent to the claims. is intended.

1,201,301: Filter press device 7: Solid-liquid mixture 10: Filter plate 100, 200, 300: Washing device 122: Valve 132: Inlet pipe 134: Second supply pipe 136: First supply pipe 150: Water discharge part 152: Outlet 160: Drainage receiving part (first receiving part)
162: Exhaust route

Claims (2)

multiple filter plates;
a drainage receiving part that receives the drainage water flowing from the plurality of filter plates and guides the drainage water toward a discharge path;
A cleaning device used for a filter press device having
a water discharge part having a discharge port for discharging cleaning water;
a positioning part that fixes or adjusts the position of the discharge port;
has
A cleaning device for a filter press device, wherein the cleaning water discharged from the discharge port whose position is fixed or adjusted by the positioning portion is supplied into the drainage receiving portion. A filter press device comprising a cleaning device for a filter press device according to claim 1.

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