JP2022159233A - 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 has: a water discharge part 150 having a discharge port for discharging washing water; and a positioning part which fixes or adjusts a position of the discharge port 152 of the water discharge part 150. The washing water discharged from the discharge port 152, whose position is fixed or adjusted by the positioning part, is supplied to a drainage receiving part 160.SELECTED DRAWING: Figure 1

Description

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

Patent Literature 1 discloses an example of a filter press device. This type of filter press device has filter plates arranged side by side in a predetermined direction, and has a configuration in which a plurality of filter plates can approach and separate from each other, and when the plurality of filter plates are overlapped and arranged in an approached state, an internal pressure is generated. Muddy water or the like is injected into the filter chamber configured in the above.

JP 2006-247464 A

A filter press apparatus employs a method of washing the filter plate with washing water in order to remove stains, adhered solid matter, and the like on the filter plate. Thus, when the filter plate is washed with washing water, it is necessary to properly treat the waste water flowing from the filter plate. One example of such a method is to use a gutter or the like to flow the waste water along a predetermined path. However, the washing water that has flowed from the filter plate may contain a large amount of solids, and solids are likely 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-described problems, the present disclosure is a technology that facilitates suppressing solids from accumulating in the wastewater receiving portion when the wastewater flowing from the plurality of filter plates of the filter press device is guided by the wastewater receiving portion. I will provide a.

A cleaning device for a filter press device, which is one of the present disclosure, includes:
a plurality of filter plates;
a drainage receiver that receives the drainage that has flowed from the plurality of filter plates and guides the drainage toward a discharge path;
A cleaning device used in a filter press device having
a water discharge part having an outlet for discharging washing water;
a positioning part that fixes or adjusts the position of the discharge port;
has
The washing water discharged from the outlet whose position is fixed or adjusted by the positioning part is supplied into the drainage receiving part.

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

1 is a side view conceptually showing a filter press device according to a first embodiment; FIG. FIG. 2 is an explanatory diagram conceptually showing an example in which a part of the filter press apparatus of FIG. 1 is embodied. FIG. 3 is an explanatory view conceptually exemplifying the configuration of a part of the filter press device of FIG. 1 as viewed from above. FIG. 4 is an explanatory view conceptually exemplifying the configuration of a part of the filter press device of FIG. 1 as seen from the front side. (A) is an explanatory view showing one of the pairs of filter plates adjacent to each other in the first holding state as viewed from above; It is explanatory drawing which illustrates a mode that (residual thing) is dropped. FIG. 6 is an explanatory diagram illustrating a state in which one filter plate and another filter plate are separated from each other 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 has flowed into the filter plate structure of the filter press device according to the first embodiment while one filter plate and another filter plate are in close contact with each other. It is a front view of one filter plate of the filter press device according to the first embodiment. 9 is a front view illustrating a state in which the filter cloth is omitted from the filter plate of FIG. 8. 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 a state in which the filter cloth is omitted from the filter plate of FIG. 11. FIG. 13 is a rear view illustrating a state in which the covering portion is further omitted from the configuration of FIG. 12. FIG. FIG. 14 is a side view conceptually showing the filter press device according to the second embodiment. FIG. 15 is a side view conceptually showing a filter press device according to the third embodiment.

Embodiments of the present disclosure are listed and illustrated below. The features [1] to [6] exemplified below may be combined in any way within a consistent range.

[1] a plurality of filter plates;
a drainage receiver that receives the drainage that has flowed from the plurality of filter plates and guides the drainage toward a discharge path;
A cleaning device used in a filter press device having
a water discharge part having an outlet for discharging washing 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 part is supplied into the drainage receiving part.

The cleaning device for the filter press device of [1] above can supply cleaning water from the water discharge part into the drainage receiving part, so that solids that have entered the drainage receiving part are easily washed away by the cleaning water, and the inside of the drainage receiving part It is easy to prevent solids from continuing to precipitate or continue to 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 discharge port is fixed or adjusted by the positioning portion, it is easy to reduce or omit the effort of the operator to fix or adjust the position of the water discharge port.

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

The cleaning device for the filter press device of [2] above can guide the waste water to the discharge path side by the flow caused by the cleaning water, so that the accumulation of solids in the waste water receiving part can be further suppressed. can.

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

The cleaning device for the filter press device of [3] above has a configuration in which the drainage receiving portion can be displaced between the lower position and the retracted position, and the water discharge portion whose position is fixed or adjusted cleans the inside of the drainage receiving portion. Water can be supplied, and it is easy to suppress accumulation of solids in the drainage receiving part.

[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 cleaning device for the filter press device of [4] above, since the water discharge part is fixed to the waste water receiving part, it is possible to suppress the displacement of the washing water caused by the displacement of the positional relationship between the water discharging part and the waste water receiving part. Therefore, the washing water can be stably supplied to the inside of the drainage receiving portion.

[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 portion is displaceable with respect to the water discharging portion.

The washing device for the filter press device of the above [5] can displace the waste water receiving part in a manner that is highly independent of the water discharging part.

[6] 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 [3], wherein the cleaning water is supplied from the water discharging section to the drainage receiving section when the drainage receiving section is at the lower position.

The cleaning device for the filter press device of [6] above is capable of displacing the waste water receiving part in a manner that is highly independent of the water discharge part, and furthermore, the waste water receiving part is 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 portion, and the drainage receiving portion is configured to be displaced relative to the introduction pipe,
further comprising a communication pipe forming a path for the washing water to flow 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 waste water receiving portion moves.

In the cleaning device for the filter press device of [7] above, even when the drainage receiving part and the water discharge part are displaced, the flow path between the introduction pipe and the water discharge part is maintained by the communicating pipe. Therefore, it is possible to appropriately achieve both the configuration for introducing washing water from the outside into the waste water receiving portion and the configuration for displacing the waste water receiving portion.

[8] an introduction pipe for introducing washing water;
a first supply pipe serving as a path for supplying washing water to the filter plate washing device;
a second supply pipe serving as a path for supplying wash water to the water discharge unit;
a valve capable of switching between at least the first supply pipe and the second supply pipe to guide the washing water introduced from the introduction pipe;
The cleaning device for a filter press device according to any one of [1] to [7].

In the cleaning device for the filter press device of [8] above, the supply destination of the cleaning water introduced from the introduction pipe can be switched between the wastewater receiving part and the filter plate cleaning device, and the supply is performed through a common route. The washed water obtained can be used for different purposes.

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

The filter press device of [6] above can achieve the same effect as the cleaning device for a filter press device of 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 description is used to explain the technical features, and unless there is a specific description, it is not intended to be limited to it, but merely an example of explanation. .

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

As shown in FIGS. 2 and 3, the filter press device 1 has a filter plate group 5 having 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 plurality of filter plates 10 move is the front-rear 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 a close state (when adjacent filter plates are in contact with each other) is defined as the front-rear direction. ing. In the example of FIG. 3 and the like, in the front-rear direction, the supply path 62 side (the side to which the solid-liquid mixture is injected) is the front side, and the opposite side is the rear side. Further, of the directions orthogonal to the front-rear direction, the predetermined first direction is the up-down direction. In the example shown in FIG. 4 and the like, the vertical direction is the direction in which both sides of the filter plate 10 configured in a rectangular shape (specifically, a square shape when viewed from the front) extend (longitudinal 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. A direction orthogonal 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 horizontal direction is the direction in which the upper and lower ends of the filter plate 10 configured in a rectangular shape extend.

In the filter press device 1, as shown in FIGS. 3 and 7, when a plurality of filter plates 10 are arranged in a predetermined direction (front-to-rear direction) while being close to each other, the filter plates 10 are arranged inside the filter plate group 5. A solid-liquid mixture is injected into the filter chamber 40 (accommodating portion). In the filter press device 1, the remaining solid-liquid mixture stored in the filter chamber 40 (accommodating portion) is discharged when the plurality of filter plates 10 are in the separated state.

As shown in FIGS. 1 to 3 and the like, the filter press device 1 uses a filter plate structure 3, and the filter plate structure 3 has a configuration in which filter plates 10 are arranged in series. The filter plate 10 is a plate-like portion having a 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-like substrate portion 11 having a through hole 16 formed in the center. The filter press device 1 has an approaching/separating device (detailed illustration is omitted in FIGS. 1 and 2) capable of moving the plurality of filter plates 10 constituting the filter plate structure 3 toward and away from each other. When the solid-liquid mixture is supplied, the filter press device 1 is configured such that the adjacent filter plates 10 are stacked in close contact with each other (see FIGS. 1, 2, 7, etc.), and the solid-liquid mixture (for example, muddy water, etc.) is slurry) is pressurized so as to flow into the through-holes 16 of each filter plate 10 by a pump. The injected solid-liquid mixture is accumulated in a filter chamber (filter chamber) 40 shown in FIGS. Between the adjacent filter plates 10 (specifically, between the filter cloths 18 of the adjacent filter plates 10), a residue obtained by removing a large amount of water from the solid-liquid mixture supplied from the pump is solidified. A solid (dehydrated cake) is formed. The water that flows into the inside of the filter plate 10 through the mesh of the filter cloth 18 is discharged to the outside (lower part) of the filter plate 10 through the drainage channel 28 in the filter plate 10 . This point will be detailed later.

(filter plate structure)
The following description relates to details of 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 concave portion 12 and a peripheral edge convex portion 14 formed on one side and the other side in the plate thickness direction, respectively.

The central recessed portion 12 is a portion that is recessed in the plate thickness direction around the through hole 16 . 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 one center recess 12A (or simply 12A), and the recess on the other side (the side where 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 central concave portion 12A is a concave portion having a rectangular outer diameter when viewed from the front side. As shown in FIGS. 11 and 12, the other center recess 12B is a recess having a rectangular outer diameter when viewed from the rear side.

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

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

The annular convex portion 24 is made of an elastic material such as rubber or an elastomer other than rubber, and is formed in a groove formed in the first pressing surface 22 of the peripheral edge side convex portion 14A. groove) and is fixed to the peripheral edge side protrusion 14A. As shown in FIG. 7, the annular convex portion 24 has a curved shape in which the outer shape of a cross section cut in a plane direction perpendicular to the extending direction of the annular convex portion 24 is convex outward. Further, the annular convex portion 24 has a hollow shape with a void portion 24A formed therein. The cavity 24A was formed outside the position of the first pressing surface 22 in the thickness direction of the filter plate 10 (the side farther from the center in the thickness direction), and extended along the direction in which the annular projection 24 extends. They are arranged in an annular shape around the central concave portion 12 .

As shown in FIGS. 11 and 12, the peripheral edge side protrusion 14B on the other side (the side on which the annular recess 34 is formed) has an annular (specifically, rectangular frame shape) around the center side recess 12B. a second pressing surface 32 arranged in the second pressing surface 32, and an annular recess 34 arranged in an annular shape (specifically, 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 of the filter plates 10, the central concave portion 12A on one side (the side on which the annular convex portion 24 is formed) and the central concave portion 12A on the other side (the side on which the annular concave portion 34 is formed) A through hole 16 is formed so as to pass through in the plate thickness direction between the center side concave portion 12B of the surface side). The through-holes 16 function as channels for causing 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 arranged so as to cover the area outside the through holes 16 on one side in the thickness direction, and as shown in FIGS. A filter cloth 18 is arranged to cover the area outside the through holes 16 on the side. 7, the 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 concave portion 34 are omitted. 7, 8, and 11, the filter cloth 18 covers one side (the side on which the annular protrusion 24 is formed) of the filter cloth 18, and the other side (the side on which the annular recess 34 is formed) is the filter cloth 18A. The filter cloth 18B is used for the surface side).

As shown in FIGS. 7 and 8, the filter cloth 18A on one side (the side on which the annular projection 24 is formed) is fixed to the annular plate portion 15A, which will be described later. It is arranged entirely up 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 on which the annular recess 34 is formed) is fixed to an annular plate portion 15B, which will be described later. 11 are arranged all the way to the periphery. In FIG. 7, the filter cloth 18 is conceptually indicated by a chain double-dashed line, and in FIGS. 8 and 11, the filter cloth 18 is conceptually indicated as a pattern area. In the example of FIG. 7, the filter cloths 18A and 18B are also present in the portion sandwiched between the peripheral edge side protrusions 14A and 14B, but the illustration of the filter cloths 18A and 18B in this portion (illustration of the two-dot chain line) is omitted. ing. In the example of FIG. 7 and the like, in each filter plate 10, the peripheral edge portion of the filter cloth 18A and the peripheral edge portion of the filter cloth 18B are connected, but the peripheral edge portions do not have to be connected. The filter cloth 18A should be arranged so as to cover at least the inner surface of the central concave portion 12A in the area outside the through holes 16, and the covered area of the filter cloth 18A has the configuration shown in FIGS. 7, 8, 11, etc. is not limited to

The filter press device 1 has the filter plate structure 3 shown in FIGS. B) in which the adjacent filter plates 10 are separated from each other. In addition, FIG. 5 is a diagram schematically showing a configuration of a portion of the filter plate structure 3 as viewed from above. FIG. 5A is a diagram showing a state in which adjacent filter plates 10 are in contact with each other. 5A and 7 show the state when the solid-liquid mixture is injected into the filter plate group 5. FIG. 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. The position of the outer peripheral edge of the plate 10 (the position of the outer peripheral edge in the plane direction orthogonal to the thickness direction) is aligned. The filter plates 10 adjacent to each other can be moved toward and away from each other. In the process of moving the plurality of filter plates 10, the horizontal movement of each filter plate 10 is restricted, and the vertical movement of each filter plate 10 is also restricted. It is possible to move while maintaining a directional attitude.

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 FIGS. 10 of the 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, so that the first pressing surface 22 of one filter plate 10 and the second pressing surface 22 of the other filter plate 10 The two pressing surfaces 32 press against each other. In the example of FIG. 7, two filter cloths 18A and 18B 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 to respectively cover the two filter plates 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 the other filter plate 10 are pressed through the filter cloth 18A of the one filter plate 10 and the filter cloth 18B of the other filter plate 10. press against each other. Two filter cloths 18A and 18B covering the two filter plates 10 are also interposed between the annular projection 24 and the annular recess 34, and this state (that is, the outer surface of the annular projection 24 and the annular recess 34 The annular convex portion 24 and the annular concave portion 34 are pressed against each other with the filter cloths 18A and 18B interposed between them. That is, the annular protrusion 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 which the adjacent filter plates 10 are in close contact with each other, as shown in FIG. A solid-liquid mixture is poured through the through holes 16 by a first injection device 60 (eg, a slurry feeder including a pump). Then, the solid-liquid mixture pressurized into the filter plate group 5 through the through-holes 16 accumulates in the filter chamber (filter chamber) 40 shown in FIG. , moisture is discharged from the minute gaps of the filter cloth 18 toward the substrate portion 11 (that is, the back side of the filter cloth 18). A dehydrated cake is formed as a residue between the adjacent filter plates 10 (specifically, between the filter cloths of the adjacent filter plates 10). 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 side convex portions 14A and 14B. In the substrate portion 11, one central concave portion 12A of the two central concave portions 12 and one peripheral edge side convex portion 14A of the two peripheral edge side convex portions 14 are located on one plate surface side (the above-mentioned one surface). side). Further, in the substrate portion 11, the other central concave portion 12B of the two central concave portions 12 and the other peripheral edge side convex portion 14B of the two peripheral edge side convex portions 14 are located on the other plate surface side (the above-described other side). The filter plate 10 is provided with a filter cloth 18A so as to cover the inner wall portion of one central recess 12A, and a filter cloth 18B is provided so as to cover the inner wall portion 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 drain plate 13 (covering portion) and the waterproof material 100 and the external space of the filter plate 10, and flows from the inter-member space to the external space. and a flow path for liquid flow. The inter-member space is a gap space between the drain plate 13 (covering portion) and the waterproof material 100, and the liquid flows into the space inside the drain channel 28 from this gap space.

In each of the central recessed portion 12A on one side and the central recessed portion 12B on the other side of the filter plate 10, the inner wall portion (inner surface portion) on the deepest side in the depth direction is provided with a passage for allowing the liquid to pass through in the plate thickness direction. Drainage plates 13 (one drainage plate 13A and the other drainage plate 13B) having water portions are provided respectively. The drainage plate 13 corresponds to an example of a covering portion, and is arranged so as to overlap the plate-like body 11A (plate portion) so as to cover the plate-like body 11A. Any of the water passage portions of the drain plates 13A and 13B may be configured with a large number of holes, or may be configured with grooves or notches. The drainage plates 13A and 13B may have a configuration in which water can pass from the front side to the back side while the filter cloth 18 is supported on the front side. It may be a simple structure, or may be a net-like structure or the like.

A plate-like body 11A whose both sides in the thickness direction are covered by the drainage plates 13 is provided inside the substrate portion 11 in the thickness direction (thickness direction of the filter plate 10) of the drainage plates 13. there is The plate-like body 11A corresponds to an example of a plate portion. The plate-like body 11A is made of, for example, a metal material or mainly composed of a metal material, and is made of, for example, a metal plate. Then, as shown in FIG. 7, one peripheral edge side protrusion 14A is a rectangular frame fixed along the peripheral edge of the plate-like body 11A on one surface side of the plate-like body 11A. One peripheral edge side convex portion 14A corresponds to an example of a frame portion, is configured in an annular shape, and is fixed to the plate-like body 11A (plate portion) while being superimposed on the plate-like body 11A. The other peripheral edge side protrusion 14B is a rectangular frame fixed along the peripheral edge of the plate-like body 11A on the other side of the plate-like body 11A. One drainage plate 13A is fixed such that its peripheral portion is sandwiched between the plate-like body 11A and the inner edge portion of the frame constituting the peripheral edge side convex portion 14A. One drainage plate 13B is fixed in such a manner that its peripheral portion is sandwiched between the plate-like body 11A and the inner edge portion of the frame constituting the peripheral edge side convex portion 14B.

Drainage channels 28A and 28B leading to 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-like body 11A. Both of the drainage channels 28A and 28B are constructed as water channels through which water flows.

A drainage channel 28A formed on the back side of the filter cloth 18A in one of the central concave portions 12A is as shown in FIGS. 7 to 10, for example. In the examples of FIGS. 7 to 9, a plurality of drainage channels 28A are formed in a groove shape on the lower end side of one surface side of the substrate portion 11 (the lower end side in the vertical direction when installed). It is configured to allow water to flow. One end (upper end) side of the plurality of drainage channels 28A is located on the back side of the drainage plate 13A, and a part of the back surface of the drainage plate 13A faces the internal space of each drainage 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. . A space exists between the back surface of the drain plate 13A and the surface of the plate-like body 11A, and it is desirable that this space communicates with each drain channel 28A. This makes it easier for the water that has flowed into the back side of the drainage plate 13A to flow to the outside of the filter plate 10 through the respective drainage channels 28A.

A drainage channel 28B formed on the back side of the filter cloth 18B in one of the central concave portions 12B is as shown in FIGS. 7 and 11 to 13, for example. In the examples of FIGS. 7 and 11 to 13, a plurality of drainage channels 28B are formed in a groove shape on the lower end side of one surface side of the substrate portion 11 (the lower end side in the vertical direction when installed). The passage 28B is configured to allow water to flow. One end (upper end) side of the plurality of drainage channels 28B is located on the back side of the drainage plate 13B, and a part of the back surface of the drainage plate 13B faces the internal space of each drainage 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. . A space exists between the back surface of the drain plate 13B and the surface of the plate-like body 11A, and it is desirable that this space communicates with each of the drain channels 28B. This makes it easier for the water that has flowed into the back side of the drainage plate 13B to flow to the outside of the filter plate 10 through each of the drainage channels 28B.

6 to 14 illustrate the configuration in which a plurality of drain channels 28 are provided on the lower end side of the filter plate 10, water that has flowed through the filter cloth 18 to the drain plate 13 side is drained through the filter plate. Any channel that can discharge 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 thinner than the plate-like body 11A (plate portion). The waterproof material 100 may be a plate material mainly composed of a non-metallic material, or may be a sheet material mainly composed of a non-metallic material. Examples of nonmetallic materials include polymeric materials such as resin materials and ceramic materials. As a representative example, the waterproof material 100 is configured by a resin plate or a resin sheet.

The waterproof material 100 is sandwiched between the plate surface of the plate-like body 11A (plate portion) and the other surface (surface on the plate-like body 11A side) of the drain plate 13 (coating portion). One waterproof material 100A is sandwiched between one drain plate 13A and the plate-like body 11A. The other waterproof material 100B is sandwiched between the other drain 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 side of the plate-like body 11A). In the filter plate 10, the other surface of the drainage plate 13 (the surface of the drainage plate 13 on the side of the plate-like body 11A) has a convex surface that is convex toward the waterproof material 100 and a concave surface that is recessed on the side opposite to the waterproof material 100. It has an uneven surface. The drainage plate 13 is a plate-shaped drainage plate having a hole formed therethrough in the plate thickness direction, but the other surface of the drainage plate 13 may be formed with grooves, depressions, or the like. .

As shown in FIGS. 6 to 13, the filter plate 10 has a pair of annular plate portions 15A and 15B that are fixed in one center recess 12A and the other center recess 12B of the substrate portion 11, respectively. Through-hole side protrusions 17A and 17B are formed on the annular plate portions 15A and 15B so as to protrude in the plate 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. It is arranged so as to surround the through hole 16 on the periphery. Similarly, from the annular plate portion 15B on the other side, a plurality of through-hole side projections 17B on the other side protrude. It is arranged around the hole 16 so as to surround the through hole 16 . The through hole 16 is formed so as to communicate from one of the pair of annular plate portions 15A and 15B to the other annular plate portion 15B side. 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 filter plate 10 and the other filter plate 10 are superimposed so as to press against each other, the one filter plate 10 has one surface side. The through-hole-side protrusion 17A of the other filter plate 10 and the through-hole-side protrusion 17B of the other filter plate 10 face each other. When the through-hole-side projections 17A on the one surface side of one filter plate 10 and the through-hole-side projections 17B on the other surface side of the other filter plate 10 face each other as shown in FIG. The interval between the 17A and 17B (the interval between the tip portions) is smaller than the interval between the plate surfaces of the annular plate portions 15A and 15B, and may be 0 (that is, the opposing through-hole side protrusions 17A and 17B are may be in contact). In the example shown in FIG. 2 and the like, the filter cloth 18 is not interposed between the opposed through-hole side projections 17A and 17B.

Inside the central recessed portion 12A on one side and in the central recessed portion 12B on the other side, there are provided drainage plate-side projections 19 (one drainage plate-side projection 19A and the other drainage Plate-side protrusions 19B) are formed respectively. One drainage plate-side protrusion 19A is fixed to at least one of the drainage plate 13A or the plate-like body 11A, and has a structure that protrudes in the plate thickness direction (thickness direction of the filter plate 10) from the surface of the drainage plate 13A. Eggplant. The drain plate-side projection 19A has a tapered shape that tapers toward the tip side in the projection direction thereof. In the examples of 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 drainage plate-side protrusion 19B is fixed to at least one of the drainage plate 13B or the plate-like body 11A, and has a structure that protrudes in the thickness direction (thickness direction of the filter plate 10) from the surface of the drainage plate 13B. Eggplant. The drain plate-side projection 19B has a tapered shape that tapers toward the tip side in the projection direction thereof. In the example of FIGS. 11 and 12, a plurality of drain plate-side projections 19B having such a configuration are arranged so as to surround the through hole 16. In the example of FIG. When the one surface side of one filter plate 10 and the other surface side of another filter plate 10 are overlapped so as to press against each other as shown in FIG. The drain plate-side protrusion 19A and each drain plate-side protrusion 19B on the other surface side of the other filter plate 10 are configured to face each other. As shown in FIG. 7, when the drainage plate-side protrusion 19A on the one surface side of one filter plate 10 and the drainage plate-side protrusion 19B on the other surface side of the other filter plate 10 face each other, these drainage plate-side protrusions The interval between the drain plates 19A and 19B (the interval between the tip portions) is smaller than the interval between the drainage plates 13A and 13B facing each other. In the example of FIG. 7 and the like, the filter cloths 18A and 18B are interposed between the facing drain plate-side protrusions 19A and 19B, and the filter cloths 18A and 18B are separated by the opposing drain plate-side protrusions 19A and 19B. is sandwiched.

(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 FIG. As shown in FIGS. 2 and 3, the filter press device 1 holds the plurality of filter plates 10 constituting the filter plate structure 3 in a predetermined posture (that is, in a posture in which the thickness direction of each filter plate 10 is the same and A plurality of filter plates 10 can be moved back and forth along guide rails 90 (guide rails 90A and 90B) in a state in which the positions of the outer peripheral edges of the filter plates 10 are aligned. By such a moving operation, adjacent filter plates in the plurality of filter plates 10 can move toward and away from each other.

Although not shown in FIGS. 8 to 13, as shown in FIGS. 2 to 4, each filter plate 10 has a filter plate 10 that protrudes laterally from both left and right sides of the substrate portion 11 of each filter plate 10. A pair of protruding portions 41 and 42 are provided so as to protrude. The pair of protruding portions 41 and 42 function as a pair of supported portions. The pair of protrusions 41 and 42 are supported while being placed on the guide rails 90A and 90B, respectively. In the plurality of filter plates 10, the pair of protrusions 41 and 42 move while being placed on the guide rails 90A and 90B. The pair of guide rails 90A and 90B correspond to an example of support members and function to support the projections 41 and 42 . 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. The filter press device 1 may be provided with an additional mechanism for maintaining the orientation of the filter plate 10 in addition to the configuration shown in FIGS.

As shown in FIGS. 2 and 3, the filter press device 1 includes, in addition to the filter plate structure 3 described above, a holding device 50, a first injection device 60, a second injection device 70, a supply channel 62, a supply channel 72, a second 1 switching unit 81, second switching unit 82, and the like. In FIG. 2 and the like, the first injection device 60 is also called a slurry supply device, and the second injection device 70 is also called 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, and 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 switches the supply path 62 between a state (open state) in which the supply of the solid-liquid mixture from the first injection device 60 to the filter plate group 5 is possible (open state) and a state (shutoff state) in which the supply of the solid-liquid mixture is impossible. state). The second switching unit 82 is a device that switches the supply path 72 between a state in which air can be supplied from the second injection device 70 to the filter plate group 5 (open state) and a state in which air cannot be supplied (blocked state). is. Although not shown in FIGS. 2 and 3, the filter press device 1 operates the holding device 50, the first injection device 60, the second injection device 70, the first switching unit 81, and the second switching unit 82. A control device (for example, an information processing device such as a computer) for controlling (operation timing, control amount, etc.) is also provided.

The holding device 50 comprises a pair of guide rails 90 (guide rails 90A, 90B), a driving device 54, and fixed walls 51, 52, which are integrally assembled. The driving device 54 includes an action portion 54C acting 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 portion 54C, and the drive shaft 54B. and a drive unit 54A for moving in the direction (thickness maintaining direction of each filter plate 10 of the filter plate group 5). The drive part 54A moves the action part 54C toward the fixed wall 51 via the drive shaft 54B, so that the plurality of filter plates 10 are pressed against the fixed wall 51 while maintaining a predetermined posture, as shown in FIGS. Then, adjacent filter plates in the filter plate group 5 come into contact with each other. On the other hand, the drive portion 54A moves the action portion 54C toward the fixed wall 52 via the drive shaft 54B, so that adjacent filter plates in the filter plate group 5 are separated from each other. For example, if an interval regulating portion (not shown) is provided for regulating the interval so that the maximum interval between adjacent filter plates in the plurality of filter plates 10 is a predetermined interval, the action portion 54C may be positioned between the filter plate groups 5. 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 portion (the end portion on the fixed wall 52 side), adjacent filter plates 10 between the respective filter plates are moved. Each filter plate moves so that the plates are spaced apart. The example described here is only an example, and the plurality of filter plates 10 are placed in a predetermined posture (that is, in a posture in which the thickness direction of each filter plate 10 is the same and the outer peripheral edge of each filter plate 10 is aligned). The holding device may have other configurations as long as the filter plates can be moved toward and away from each other while aligning them in an aligned posture.

In this manner, by moving the action portion 54C toward the fixed wall 51, the holding device 50 arranges the plurality of filter plates 10 in a stacked state as shown in FIGS. In between, the annular projection 24 of one filter plate 10 enters into the annular recess 34 of the other filter plate 10 to press the inside of the annular recess 34, and presses the first pressing surface 22 of one filter plate 10 and the other. can be held in a holding state (first holding state) in which the filter plate 10 and the second pressing surface 32 of the filter plate 10 are pressed against each other.

The first injection device 60 is a transfer device that transfers a solid-liquid mixture from a solid-liquid mixture storage unit (for example, a slurry storage tank) (not shown) to the filter plate group 5 side, and the first switching unit 81 is in an open state. The solid-liquid mixture can be injected into the filter plate group 5 via the supply channel 62 when the supply channel 62 is in communication with the through hole 16 at the end of the filter plate group 5 . The first injection device 60 fills 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. It operates to inject the solid-liquid mixture 7 from 16 into the interior of the plurality of filter plates 10 . The first switching unit 81 is a device that switches between a first stop state for stopping the inflow and outflow of fluid at one end side of the filter plate group 5 and a first release state for canceling the first stop state. The first switching unit 81 is configured by a known electromagnetic valve that switches the supply line 62 (pipeline) between an open state and a cutoff state. The opening operation and closing operation of the first switching unit 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. Air can be injected into the filter plate group 5 through the supply channel 72 when the filter plate group 5 is in communication 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 inside of 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 for stopping the inflow and outflow of fluid on the other end side of the filter plate group 5 and a second release state for canceling the second stop state. The second switching unit 82 is composed of a known electromagnetic valve that switches the supply line 72 (pipeline) between an open state and a cutoff state. The opening operation and closing operation of the second switching unit 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 first holding state described above. In the first holding state, as shown in FIGS. 2, 3, and 7, each of the plurality of filter plates 10 and the adjacent filter plates 10 are in close contact with each other. 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 FIGS. and the first switching unit 81 is set to the first released state (the state in which the supply path 62 is opened). A solid-liquid mixture injection operation is performed so as to inject the mixture 7 . By such a solid-liquid mixture injection operation, each filter chamber 40 formed in the filter plate group 5 is filled with the solid-liquid mixture 7, and part of the water contained in the solid-liquid mixture 7 is It is discharged from the drainage channel 28 . 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 solid-liquid mixture 7 is injected into the filter plate group 5 by the first injection device 60, the holding device 50 maintains the first holding state as shown in FIGS. , the first switching unit 81 is switched to the first stopped state (the state in which the supply path 62 is blocked), the second switching unit 82 is switched to the second open state (the state in which the supply path 72 is opened), and such In this state, the second injection device 70 performs an air injection operation so as to inject air into the inside of the filter plate group 5 . By such an air injection operation, air is supplied into each of the filter chambers 40 configured in the filter plate group 5 , and the pressure of the air causes water from the solid-liquid mixture 7 remaining in the filter chambers 40 to flow out. Excretion is facilitated. Specifically, during the air injection operation, air is flowed from the through hole 16 side of 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 The liquid (moisture) of the solid-liquid mixture 7 existing in the filter plate group 5 is discharged to the outside of the filter plate group 5 through the drainage channel 28 together with the air. The operation timing, operation time, etc. of each device are controlled by a control device (not shown).

After the solid-liquid mixture injection operation (specifically, after the air injection operation), the filter press device 1 performs a discharge operation for discharging residual matter (dehydrated cake) remaining in the filter chamber 40 . In the filter press device 1, after the air injection operation, the driving portion 54A of the holding device 50 moves the acting portion 54C to the other side in the front-rear direction (the side of the fixed wall 52) via the driving shaft 54B. , the adjacent filter plates are separated from each other. Specifically, during the discharge operation, the holding device 50 sequentially moves the filter plates 10 from the filter plate 10 at the end of the filter plate group 5 to the other side in the front-rear direction (toward the drive unit 54A). During this discharge operation, in the process in which the holding device 50 sequentially moves the filter plates 10 to the other side in the front-rear direction, the vicinity of each filter plate 10 changes from FIG. 5(A) to FIG. The filter plate 10 that most recently started moving to the other side in the front-rear direction and the filter plate 10 adjacent to the one side in the front-rear direction of the filter plate 10 (the filter plate 10 that is scheduled to move to the other side in the front-rear direction next) The residue (dehydrated cake 7A) is discharged downward between . That is, when the filter plate 10 that started to move most recently moves away from the next filter plate 10 that is maintained stationary, the residue (dehydrated cake 7A) held between the two filter plates 10 ) falls downward. During the discharge operation, the holding device 50 moves the filter plate 10 that has recently begun to move to the other side in the front-rear direction and the next filter plate 10 (the front-rear direction of the filter plate 10 that has recently started to move to the other side in the front-rear direction). When the interval between the filter plates 10 adjacent to one side reaches the maximum interval, the interval regulating members attached to the plurality of filter plates 10 move the next filter plate 10 to the other side in the front-rear direction. 10 are sequentially moved to the other side in the front-rear direction.

By such a discharging operation, the distance between the adjacent filter plates can be increased as shown in FIG. As shown in FIGS. 5(A) and 5(B), in the process in which two adjacent filter plates 10, 10 change from the close state to the separated state, each filter plate 10 is restricted from moving in the horizontal direction, and each filter plate The vertical movement of the filter plate 10 is also restricted, and each filter plate 10 can move while maintaining a posture in which the plate thickness direction is the front-rear direction and the extending direction of the side portions 10A as shown in FIG. 4 is the vertical direction. In the process of moving each filter plate 10, a slight change in posture of each filter plate 10 may be allowed. A side portion 10A of each filter plate 10 constitutes a side portion 5A of the filter plate group 5 . Specifically, the side portions 10A on one side of the plurality of filter plates 10 are arranged side by side in the front-rear direction, and constitute the side portion 5A on one side of the filter plate group 5 . Similarly, the other side portions 10A of the plurality of filter plates 10 are arranged side by side in the front-rear direction to constitute the other side portion 5A of the filter plate group 5 .

(Washing action)
The filter press device 1 includes a waste water receiver 160 and a cleaning device 100 . The drainage receiving part 160 is a part that receives the drainage flowing from the plurality of filter plates 10 and guides the drainage toward the discharge path. The cleaning device 100 is a device for cleaning the waste water receiving portion 160 .

The drainage receiver 160 functions as a gutter for flowing drainage. The drainage receiving part 160 has a function of receiving the drainage falling from the plurality of filter plates 10 in a state of being positioned below the plurality of filter plates 10 so as to accommodate the drainage therein. The drainage receiving part 160 has, for example, a box-like or groove-like shape that is open on the upper side and is elongated.

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

The water discharge part 150 is a part that discharges washing water toward the drainage receiving part 160 . The water discharge part 150 has a discharge port 152 for discharging washing water. The discharge port 152 may be one or more in the water discharging portion 150 .

The water discharging part 150 is fixed to the drainage receiving part 160 by connecting members such as screws and bolts, for example. In this configuration, the connecting member corresponds to an example of the positioning portion. In the representative example described below, the water discharge portion 150 is fixed relative to the waste water receiving portion 160 . However, it is not limited to this example, and the water discharging part 150 may be fixed to a different part from the drainage receiving part 160 . Alternatively, the water discharging unit 150 may be configured to be movable by a moving device such as a robot, and may be positionally adjustable to a position where cleaning water can be supplied to the waste water receiving unit 160 . In this case, the moving device corresponds to an example of the positioning unit.

In the washing device 100 configured as described above, washing water discharged from the discharge port 152 whose position is fixed or adjusted by the positioning portion is supplied into the drainage receiving portion 160 . The washing water supplied from the discharge port 152 into the drainage receiving portion 160 causes the drainage in the drainage receiving portion 160 to flow to the discharge path 162 side. The discharge path 162 may be a flow path that can guide the waste water in the waste water receiving part 160 to the outside, and may be configured by a pipe (for example, a flexible pipe, etc.), and a flow path that is open at the top. (for example, a groove). The discharge path 162 may be configured such that its interior communicates with the interior of the drainage receiving portion 160 only when the drainage receiving portion 160 is in the lower position, or may be configured to communicate with the interior of the drainage receiving portion 160 at all times. good.

The drainage receiving portion 160 corresponds to an example of a first receiving portion. As shown in FIGS. 3 and 4, the drainage receiver 160 is displaced between a lower position for receiving the liquid dropped from the plurality of filter plates 10 and a retracted position retracted from the lower position. The drainage receiver 160 is guided by guide rails 166A and 166B and driven by a driving device 168. As shown in FIG. In the examples of FIGS. 3 and 4, the drainage receiver 160 at the retracted position is indicated by reference numeral 160Z. In a typical example, washing water is supplied from the discharge port 152 whose position is fixed or adjusted by the positioning portion into the drainage receiving portion 160 (first receiving portion) located at the lower position. However, the configuration is not limited to this example, and washing water is supplied from the discharge port 152 whose position is fixed or adjusted by the positioning portion into the drainage receiving portion 160 (first receiving portion) positioned at the retracted position. may

As shown in FIG. 1, the cleaning device 100 includes a plurality of pipe portions (introduction pipe 132, first supply pipe 136, second supply pipe 134), a pump 120, and a valve 122. As shown in FIG. The introduction pipe 132 is a pipe that introduces cleansing water from the outside (the cleansing water reservoir 110 in the example of FIG. 1) and transfers it downstream. The first supply pipe 136 is a route for supplying washing water to the filter plate washing device 140 . The second supply pipe 134 is a route for supplying washing water to the water discharge section 150 . The valve 122 is a valve capable of switching between at least the first supply pipe 136 and the second supply pipe 134 to guide the cleansing water introduced from the introduction pipe 132 . The valve 122 is configured, for example, as a three-way valve. The valve 122 may be a valve that switches paths manually, or a valve that switches paths by 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 . Filter plate cleaning device 140 may employ various known filter plate cleaning device configurations.

(Example of effect)
Since the washing apparatus 100 can supply washing water from the water discharging portion 150 into the waste water receiving portion 160, solids that have entered the waste water receiving portion 160 are easily washed away by the washing water, and solids in the waste water receiving portion 160 are prevented. It is easy to suppress continuous precipitation or continuous storage. Therefore, in the cleaning device 100, when the wastewater flowing from the plurality of filter plates 10 of the filter press device 1 is guided through the wastewater receiving portion 160, it is easy to prevent solids from accumulating in the wastewater receiving portion 160. FIG. Moreover, since the position of the water outlet 152 is fixed or adjusted by the positioning portion, it is easy for the operator to reduce or omit the effort of fixing or adjusting the position of the water outlet 152 .

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

Even if the cleaning device 100 is configured such that the drainage receiving portion 160 can be displaced between the lower position and the retracted position, the cleaning water can be supplied into the drainage receiving portion 160 by the water discharging portion 150 whose position is fixed or adjusted. , and it is easy to suppress accumulation of solids in the drainage receiving part 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 displacement of the positional relationship between the water discharging part 150 and the drainage receiving part 160. It is possible to stably supply water to the inside of the drainage receiving portion 160 .

The cleaning device 100 can switch the supply destination of the cleaning water introduced from the introduction pipe 132 to the drainage receiving part 160 and the filter plate cleaning device 140, and the cleaning water supplied through the common route can be switched to different 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 the second embodiment. The filter press device 201 of the second embodiment shown in FIG. 14 has only a structure in which a communication pipe 230 is provided between a second supply pipe 134 arranged at a fixed position so as to introduce washing water and a water discharge part 150. is different from the filter press device 1 of the first embodiment, and other structures and contents are the same as those of the filter press device 1 of the first embodiment. A cleaning device 200 for a filter press according to the second embodiment differs from the cleaning device for a filter press according to the first embodiment only in the structure in which a communicating pipe 230 is provided between the second supply pipe 134 and the water discharge part 150 . 100, other structures and contents are the same as the cleaning device 100 for the filter press device of the first embodiment.

The drainage receiver 160 functions as an example of a first receiver. The drainage receiver 160 is displaced between a lower position for receiving the liquid dropped from the plurality of filter plates 10 constituting the filter press device 201 and a retracted position retracted from the lower position. At the retracted position, part or all of the drainage receiver 160 is arranged at a position not vertically overlapping the plurality of filter plates 10 . The water discharge part 150 is fixed to the drainage receiving part 160 . The water discharging part 150 is fixed to the drainage receiving part 160 by connecting members such as screws and bolts, for example. In this configuration, the connecting member corresponds to an example of the positioning portion. Washing water is supplied from the discharge port 152 of the water discharge part 150 whose position is fixed by the positioning part in this way into the drainage receiving part 160 located at the lower position or the retracted position. The wash water may be automatically released contingent on being in the lowered position, automatically or manually, whether in the lowered or retracted position. good too.

As in the first embodiment, the washing water is water supplied through an introduction pipe (second supply pipe 134) provided at a position different from the water discharge portion 150, and the drainage receiving portion 160 is provided with respect to the introduction pipe 132. and relatively displaced. The second supply pipe 134 is fixed to a structure such as a building, and its position is fixed. The cleaning device 200 has a communication pipe 230 . The communication pipe 230 forms a path through which washing water flows from the introduction pipe 132 side to the water discharge portion 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 so that washing 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 part 150 and functions to flow washing water to the discharge port 152 . The communicating pipe 230 is configured to be flexibly deformable, and deforms when the drainage receiving portion 160 moves. Communicating pipe 230 is configured 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 apparatus 301 of the third embodiment shown in FIG. It is the same as the filter press device 1 of one embodiment. A cleaning device 300 for a filter press according to the third embodiment differs from the cleaning device 100 for a filter press according to the first embodiment only in that the water discharge part 150 is held by a holding part 330, and other structures are different. And the contents are the same as the cleaning device 100 for the filter press device of the first embodiment.

The drainage receiving portion 160 has the same configuration as in the first and second embodiments, is displaceable in the same manner, and functions as an example of the first receiving portion. The drainage receiver 160 is displaced between a lower position for receiving the liquid dropped from the plurality of filter plates 10 and a retracted position retracted from the lower position. Washing water is supplied from the discharge port 152 whose position is fixed by the positioning portion into the drainage receiving portion 160 located at the lower position. The holding part 330 is fixed to a structure such as a building, and its position is fixed. The holding part 330 has a holding body (for example, a frame), which is a structural body 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 portion 330 corresponds to an example of a positioning portion. Specifically, the water discharging portion 150 is fixed at a position different from the drainage receiving portion 160 by the holding portion 330 and positioned so as not to be displaced. The drainage receiving portion 160 is displaceable with respect to the water discharging portion 150 . The positional relationship is such that washing water is supplied from the water discharging part 150 to the drainage receiving part 160 when the drainage receiving part 160 is in the lower position. Therefore, when washing water is discharged from the water discharging part 150 when the drainage receiving part 160 is in the above-described lower position, this washing water flows into the drainage receiving part 160 and the inside of the drainage receiving part 160 is washed.

<Other embodiments>
The present disclosure is not limited to the embodiments illustrated by the above description and drawings. For example, the features of the embodiments described above or below can be combined in any consistent manner. Also, any feature of the embodiments described above or below may be omitted if not explicitly indicated as essential. Furthermore, the embodiments described above may be modified as follows.

In the above-described embodiments, an example of the solid-liquid mixture was described, but the solid-liquid mixture is other than the above-described examples, and includes at least a liquid and a solid (for example, granular material, powder, and granules). Either) may be mixed. For example, the solid-liquid mixture is not limited to muddy water and the like, and may be food or food material in which liquid and solid are mixed. Alternatively, the solid-liquid mixture may be a material for industrial products in which solid and liquid are mixed.

In the above-described embodiment, the filter plate 10 has a square shape when viewed from the front, but the shape of the filter plate is not limited to a square 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 configuration in which the outer edge is partially or entirely curved, or another configuration.

In the above-described embodiment, the filter plate group 5 has a structure in which a plurality of filter plates 10 having the same structure are arranged side by side. Just do it. For example, the filter press device may have 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 convex portion 24 and the annular concave portion 34 are provided in the filter plate structure 3, and the annular convex portion 24 enters into the annular concave portion 34 when the plurality of filter plates 10 are in close contact with each other. , but not limited to this configuration. For example, the position of the annular projection 24 may be the same flat surface as the first pressing surface 22 . That is, the first pressing surface 22 may reach the position of the annular protrusion 24 without the annular protrusion 24 being present. Similarly, the position of the annular recess 34 may be the same flat surface as the second pressing surface 32 . That is, the second pressing surface 32 may reach the position of the annular recess 34 without the annular recess 34 existing.

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

It should be noted that the embodiments disclosed this time should be considered as examples in all respects and not restrictive. The scope of the present invention is not limited to the embodiments disclosed this time, 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: cleaning device 122: valve 132: introduction pipe 134: second supply pipe 136: first supply pipe 150: water discharge section 152: discharge port 160: drainage receiving portion (first receiving portion)
162: Emission route

Claims (9)

a plurality of filter plates;
a drainage receiver that receives the drainage that has flowed from the plurality of filter plates and guides the drainage toward a discharge path;
A cleaning device used in a filter press device having
a water discharge part having an outlet for discharging washing 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 part is supplied into the drainage receiving part. 2. The cleaning device for a filter press device according to claim 1, wherein the cleaning water supplied into the waste water receiving portion from the discharge port causes the waste water in the waste water receiving portion to flow toward the discharge path. The drainage receiving portion has a first receiving portion that is displaced between a lower position for receiving liquid falling from the plurality of filter plates and a retracted position retracted from the lower position,
3. The filter according to claim 1 or 2, wherein the washing water is supplied into the first receiving portion located at the lower position or the retracted position from the outlet whose position is fixed or adjusted by the positioning portion. Cleaning equipment for press equipment. The washing device for a filter press device according to any one of claims 1 to 3, wherein the water discharge part is fixed to the waste water receiving part. 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 claims 1 to 3, wherein the drainage receiving portion is displaceable with respect to the water discharging portion. The water discharge part is fixed at a position different from the drainage receiving part,
4. The cleaning device for a filter press device according to claim 3, wherein the cleaning water is supplied from the water discharging portion to the drainage receiving portion when the drainage receiving portion is at the lower position. The washing water is water supplied through an introduction pipe provided at a position different from the water discharge portion, and the drainage receiving portion is configured to be displaced relative to the introduction pipe,
further comprising a communication pipe forming a path for the washing water to flow from the introduction pipe side to the water discharge part side;
5. The cleaning device for a filter press device according to claim 4, wherein the communication pipe is configured to be flexibly deformable, and the communication pipe is deformed when the waste water receiving portion moves. an introduction pipe for introducing washing water;
a first supply pipe serving as a path for supplying washing water to the filter plate washing device;
a second supply pipe serving as a path for supplying wash water to the water discharge unit;
a valve capable of switching between at least the first supply pipe and the second supply pipe to guide the washing water introduced from the introduction pipe;
The cleaning device for a filter press device according to any one of claims 1 to 7, comprising: A filter press apparatus comprising a cleaning device for a filter press apparatus according to any one of claims 1 to 8.

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