JP2020054960A - Filter plate structure of filter press device, and the filter press device - Google Patents

Abstract

To provide a structure which can enhance sealability and can suppress leakage of a liquid from a filtering chamber more securely.SOLUTION: In a filter plate structure of a filter press device, a first pressing part of a filter plate part has a first sealing part which is arranged around a dent part and protrudes or recesses. A second pressing part of a close contact part has a second sealing part which is arranged around a storage part and protrudes or recesses. The first sealing part and the second sealing part press each other in a close contact state, and the one sealing part has a protrusion part which protrudes to another sealing part side and is arranged so as to surround a filtering chamber in the close contact state, and the other sealing part has a recess part which recesses to an opposite side to the one sealing part and is arranged so as to surround the filtering chamber 40 in the close contact state. The protrusion part or a covering part which covers the protrusion part enter the recess part and presses an inner surface of the recess part in the close contact state.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a filter plate structure of a filter press device and a filter press device.

  In a filter press device provided conventionally, a plurality of filter plates are stacked and arranged, muddy water is poured into a space formed between the filter plates, and the muddy water is squeezed between the filter plates to separate a solid component into a liquid component. And a configuration that separates them from each other. As an example of a filter plate used in this type of filter press device, a technique as disclosed in Patent Document 1 has been proposed. The filter plate disclosed in Patent Literature 1 has frame-shaped convex portions provided on both front and rear surfaces of a center portion of a substrate, and in a state where a plurality of filter plates overlap, concave portions on the center side of adjacent filter plates face each other. To form a filter chamber, and the peripheral edges of the filter chamber are sealed by pressing the frame-shaped projections of adjacent filter plates against each other.

JP-A-8-281016

  The filter plate disclosed in Patent Document 1 has an elastic body for squeezing placed on one filter plate of adjacent filter plates, and an annular concave portion is provided on a frame-shaped convex portion of the filter plate on which the elastic body for squeezing is covered. A seal member made of a soft elastic body is housed inside the annular recess. When the filter plate is fastened, the space between the substrate and the peripheral edge of the compression elastic body is sealed via a sealing material made of a soft elastic body. However, the filter plate disclosed in Patent Literature 1 has a configuration in which the flat portions are in close contact with each other when the frame-shaped convex portions of the adjacent filter plates press against each other, so that the sealing performance is not sufficient. When a strong internal pressure is applied by the solid-liquid mixture flowing into the room, there is a possibility that liquid or the like leaks from the peripheral portion.

  The present invention has been made in order to solve the above-described problem, and more simply realizes a configuration that can further enhance the sealing performance and can more reliably suppress leakage from the filter chamber. It is intended for.

The filter plate structure of the filter press device according to the first aspect of the present invention includes:
A filter plate having a plate-like substrate,
The filter plate portion is arranged opposite to the filter plate portion and is configured as a plate-shaped portion or a frame-shaped portion different from the filter plate portion, and a relative position with respect to the filter plate portion is a close contact position in which the filter plate portion is in close contact with the filter plate portion. The contact portion is configured to be switched to an open position displaced from the filter plate portion, and an accommodation space is configured therein,
With
The filter plate structure of a filter press device in which a filter chamber is configured by the filter plate portion and the close contact portion when the close contact portion is in a close contact state at the close contact position,
The substrate unit,
A depression formed on the outer surface of the substrate portion on the contact portion side, and constituting at least a part of the filtration chamber,
A first pressing portion that is arranged to surround the recessed portion on the outer surface portion of the substrate portion on the contact portion side, and presses the contact portion in the contact state;
A hole serving as a flow path leading to the depression in a configuration passing through the inside of the substrate portion,
Has,
The contact portion,
An accommodating portion that is configured in a hole or a concave shape, and configures the filtering chamber together with the recessed portion when in the close contact state,
A second pressing portion disposed around the housing portion and pressing the first pressing portion in the close contact state;
Has,
The first pressing portion,
A first facing portion that is arranged around the recessed portion and has a surface facing the second pressing portion side in the close contact state;
A first seal portion disposed around the recessed portion and convex or concave from the surface of the first facing portion;
With
The second pressing portion,
A second opposing portion that is arranged around the housing portion and has a surface facing the first pressing portion side in the close contact state;
A second seal portion that is arranged around the housing portion, is concave or convex from the surface of the second facing portion, and presses the first seal portion in the close contact state;
With
In the first seal portion and the second seal portion pressed against each other in the close contact state, one of the seal portions is convex toward the other seal portion side in the close contact state and surrounds the filtration chamber. The other seal portion has a concave portion arranged to surround the filtration chamber while being concave on the opposite side to the one seal portion when in the close contact state. In the close contact state, the convex portion or the covering portion covering the convex portion enters the concave portion and presses the inner surface of the concave portion.

  In the above filter plate structure, the filter plate portion and the contact portion are brought into close contact with each other to form a filter chamber (the inflow region portion of the solid-liquid mixture composed of the recessed portion of the filter plate portion and the accommodating portion of the contact portion). Then, in the vicinity of the boundary between the filter plate portion and the contact portion around the filter chamber, a seal region where the first seal portion and the second seal portion press against each other is configured to surround the filter chamber. Will be. In the seal region, one of the first and second seal portions that press each other functions as a convex portion that is convex toward the other seal portion, and the other seal portion has It functions as a concave portion that is concave on the side opposite to the one seal portion. With such a configuration, in the close contact state, the convex portion or the covering portion covering the convex portion enters the concave portion and presses the inner surface of the concave portion, so that a region capable of securing stronger adhesiveness is formed in the filter chamber. Can be arranged so as to surround the portion that constitutes.

The filter plate structure of the filter press device according to the second aspect of the present invention includes:
A plate-like substrate portion, and a filter cloth covering the substrate portion,
The filter plate is disposed to face the filter plate, and the relative position with respect to the filter plate is configured to be switched between a close contact position that is in close contact with the filter plate and an open position that is displaced from the filter plate. A configured contact portion,
With
The filter plate structure of a filter press device in which a filter chamber is configured by the filter plate portion and the close contact portion when the close contact portion is in a close contact state at the close contact position,
The substrate unit,
A depression formed on the outer surface of the substrate portion on the contact portion side, and constituting at least a part of the filtration chamber,
A first pressing portion that is arranged to surround the recessed portion on the outer surface portion of the substrate portion on the contact portion side, and presses the contact portion in the contact state;
A hole serving as a flow path leading to the depression in a configuration passing through the inside of the substrate portion,
Has,
The filter cloth is disposed so as to cover at least the inner surface of the depression,
The contact portion,
An accommodating portion that is configured in a hole or a concave shape, and configures the filtering chamber together with the recessed portion when in the close contact state,
A second pressing portion disposed around the housing portion and pressing the first pressing portion in the close contact state;
Has,
The first pressing portion,
A first facing portion that is arranged around the recessed portion and has a surface facing the second pressing portion side in the close contact state;
A first seal portion disposed around the recessed portion and convex or concave from the surface of the first facing portion;
With
The second pressing portion,
A second opposing portion that is arranged around the housing portion and has a surface facing the first pressing portion side in the close contact state;
A second seal portion disposed around the accommodation portion, concave or convex from the surface of the second facing portion, and pressing against the first seal portion in the close contact state;
With
In the first seal portion and the second seal portion pressed against each other in the close contact state, one of the seal portions is convex toward the other seal portion side in the close contact state and surrounds the filtration chamber. The other sealing portion has a concave portion which is recessed on the opposite side to the one sealing portion when in the close contact state and is arranged so as to surround the filtration chamber. In the close contact state, the convex portion or the covering portion covering the convex portion enters the concave portion and presses the inner surface of the concave portion.

  In the above filter plate structure, the filter plate portion and the contact portion are brought into close contact with each other to form a filter chamber (the inflow region portion of the solid-liquid mixture composed of the recessed portion of the filter plate portion and the accommodating portion of the contact portion). Then, in the vicinity of the boundary between the filter plate portion and the contact portion around the filter chamber, a seal region where the first seal portion and the second seal portion press against each other is configured to surround the filter chamber. Will be. In the seal region, one of the first and second seal portions that press each other functions as a convex portion that is convex toward the other seal portion, and the other seal portion has It functions as a concave portion that is concave on the side opposite to the one seal portion. With such a configuration, in the close contact state, the convex portion or the covering portion covering the convex portion enters the concave portion and presses the inner surface of the concave portion, so that a region capable of securing stronger adhesiveness is formed in the filter chamber. Can be arranged so as to surround the portion that constitutes.

A filter press device according to a third aspect of the present invention includes:
The filter press device has a filter plate structure.

  According to the filter press device of the third aspect, a filter press device having the same effect as the filter plate structure of the first or second aspect can be realized.

A filter press device according to a fourth aspect of the present invention includes:
Having a filter plate structure of the above filter press device,
The contact portion is formed of a frame having a penetrating opening,
The opening is the housing portion,
The filter plate structure,
An element comprising a plurality of the filter plate portions and a filter plate portion group having each of the filter plate portions as an element, and an element having a plurality of the frame members and a frame group having each of the frame members as an element. Including groups,
In the element group, elements constituting the filter plate group and elements constituting the frame body group are alternately arranged.
The substrate portion has the dent portion and the first pressing portion formed on both sides in its thickness direction, and each of the first opposing portions and the first pressing portion surround each of the dent portions in each of the first pressing portions. Each said first seal portion is arranged;
The frame has the second pressing portions formed on both sides in the thickness direction of the frame itself, and each of the second opposing portions and each of the second seals surround the accommodating portion in each of the second pressing portions. Department is arranged,
In a set of adjacent elements in the element group, one of the first seal portion and the second seal portion is configured as the convex portion, the other is configured as the concave portion, and each of the first seal portion and the second seal portion is configured as the concave portion. In the set of the elements, the convex portion presses the inner surface of the concave portion,
Further, in each of the sets of the elements, the plurality of the filter plate portions and the plurality of the plurality of the filter plate portions and the plurality of the frame members are overlapped so that the plurality of the filter plate portions and the plurality of the frame bodies are overlapped so that the convex portion presses the inner surface of the concave portion. A holding device for holding the frame,
When the holding device holds the plurality of filter plate portions and the plurality of frame bodies in the overlapping state, the solid-liquid mixture is injected into the recessed portion and the accommodation portion of each of the element sets. An injection device,
After the injection device injects the solid-liquid mixture, from each of the frames, a separation device that separates the filter plate portions adjacent to both sides of each of the frames,
A water discharge unit having a water discharge port that discharges the wash water, a water supply device that pours the wash water into the water discharge port of the water discharge unit, and a moving device that moves the water discharge unit;
Including
The moving device is configured such that when the separating device is in a separated state in which the filter plate portions adjacent to both sides of the frame body are separated from any of the frame members, the filter plate portions on both sides in the separated state. Move the water discharge section between,
The washing device applies the washing water to the filter plate portions on both sides in the separated state by the water discharging portion located between the filter plate portions on both sides in the separated state.

In the filter press device of the fourth aspect, a plurality of filtration chambers can be configured by bringing the respective frames constituting the frame group into close contact with each other. The solid-liquid mixture is poured into each of the filtration chambers to form a cake. After formation, the cake can be separated from each frame by separating the filter plate portions adjacent on both sides.
Further, when any of the frames is in a separated state in which the filter plates adjacent to both sides of the frame are separated from each other, the water discharge section is moved between the filter plates on both sides, and the water discharge section separates the water discharge sections. The washing water is applied to the filter plates on both sides in the state, so when cleaning the filter plates on both sides, the surface of the filter plate (the surface facing the frame) The washing water can be reliably applied with a stronger force from a position close to (2), and the surface of the filter plate can be washed very well.

  ADVANTAGE OF THE INVENTION According to this invention, the sealability can be further improved, and the structure which can suppress the leak from a filtration chamber more reliably can be implement | achieved more simply.

1 is a cross-sectional view schematically illustrating a filter plate structure of a filter press device according to a first embodiment of the present invention. FIG. 2 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 FIG. 1. It is a front view of one filter plate of the filter plate structure of FIG. FIG. 4 is a front view illustrating a state where a filter cloth is omitted from the filter plate of FIG. 3. FIG. 4 is a rear view of the filter plate of FIG. 3. FIG. 6 is a rear view illustrating a state where a filter cloth is omitted from the filter plate of FIG. 5. It is an enlarged view which expands and shows a part of filter plate structure of FIG. FIG. 3 is an enlarged view conceptually showing a part of the filter plate structure in the state of FIG. 2 in an enlarged manner. It is a side view which shows notionally the filter press apparatus which has the filter plate structure of FIG. FIG. 3 is an explanatory diagram showing an example in which the configuration of FIG. 2 is embodied. FIG. 4 is an explanatory diagram showing an example in which the configuration of FIG. 3 is embodied. FIG. 5 is an explanatory diagram showing an example in which the configuration of FIG. 4 is embodied. FIG. 6 is an explanatory diagram showing an example in which the configuration of FIG. 5 is embodied. FIG. 7 is an explanatory diagram showing an example in which the configuration of FIG. 6 is embodied. It is explanatory drawing which shows an example which actualized a part of filter press apparatus of FIG. It is explanatory drawing which conceptually illustrates the structure which looked at a part of filter press apparatus of FIG. 15 from the upper side. It is explanatory drawing which conceptually illustrates the structure which looked at a part of filter press apparatus of FIG. 15 from the front side. (A) is an explanatory view illustrating an example in which a cake falls while tilting when there is no restricting portion, and (B) is an explanatory diagram illustrating an example in which the cake falls while tilting when there is a restricting portion. is there. (A) is an explanatory view exemplifying a state where one of a pair of adjacent filter plates in the first holding state is viewed from above, and (B) is a diagram in which the set of filter plates is separated to form a cake. It is explanatory drawing which illustrates a mode that it falls. It is sectional drawing which illustrates typically the filter plate structure of the filter press apparatus which concerns on 2nd Embodiment of this invention. It is explanatory drawing which illustrates the state which the solid-liquid mixture flowed in the state where the filter plate part and the contact part adhere | attached in the filter plate structure of 2nd Embodiment. It is a front view which illustrates the filter plate part which forms a part of filter plate structure of 2nd Embodiment. FIG. 23 is a front view illustrating a state where the filter cloth is omitted from the filter plate part of FIG. 22. It is a rear view of the filter plate part of FIG. FIG. 23 is a rear view illustrating a state where the filter cloth is omitted from the filter plate part of FIG. 22. It is a front view which illustrates the frame which forms a part of filter plate structure of 2nd Embodiment. It is a rear view of the frame of FIG. It is an explanatory view showing an example which materialized a part of filter press device using a filter board structure concerning a 2nd embodiment. FIG. 29 is an explanatory diagram conceptually illustrating a configuration of a part of the filter press device of FIG. 28 as viewed from above. It is an explanatory view explaining a state when a filter plate part and a contact part are separated and a contact part inclines in a filter plate structure of a 2nd embodiment. FIG. 31 is an explanatory diagram schematically showing a configuration of the filter plate portion and the contact portion in the state of FIG. 30 when viewed from above. It is an explanatory view explaining a situation during washing of a filter press device which has a filter plate structure of a 2nd embodiment. FIG. 33 is an explanatory diagram illustrating a state in which the filter plate portion and the contact portion are viewed from above during cleaning shown in FIG. 32. It is explanatory drawing which shows the modification 1 of the frame body used for the filter plate structure of 2nd Embodiment schematically. It is explanatory drawing which shows the modification 2 of the frame body used for the filter plate structure of 2nd Embodiment schematically. It is sectional drawing which illustrates typically the filter plate structure of the filter press apparatus which concerns on 3rd Embodiment of this invention. It is explanatory drawing which illustrates the state in which the solid-liquid mixture flowed in the state where the filter plate part and the contact part adhere | attached in the filter plate structure of 3rd Embodiment. It is an explanatory view explaining a state when a filter plate part and a contact part are separated and a contact part inclines in a filter plate structure of a 3rd embodiment.

<First embodiment>
Hereinafter, a first embodiment embodying each example of a filter plate structure and a filter press device of a filter press device according to the present invention will be described with reference to the drawings. These drawings are used to explain technical features that can be adopted by the present invention. Unless otherwise specified, the structure of the device and the like described below are not intended to limit the invention, but are merely illustrative examples.

(Filter press equipment)
First, the outline of the filter press device 1 will be described.
The filter plate structure 3 shown in FIG. 1 is used, for example, in a single-type filter press device 1 as shown in FIG. The filter press apparatus 1 shown in FIG. 9 dewaters a solid-liquid mixture (for example, a slurry in which sludge, excavated soil, cement or the like is mixed in water), and solidifies the solid (liquid) obtained by dewatering the solid-liquid mixture. Cake).

  The filter press device 1 uses a filter plate structure 3 shown in FIG. 1 and the like. The filter plate structure 3 has a configuration in which filter plates 10 are arranged in series, and the filter plate 10 penetrates the center. The filter cloth 18 is stretched so as to cover the plate-like substrate 11 in which the holes 16 as holes are formed. The filter press device 1 shown in FIG. 9 has an approaching / separating device (not shown in FIG. 9) capable of approaching and separating a plurality of filter plates 10 constituting the filter plate structure 3 from each other. At the time of supplying the liquid mixture, the solid-liquid mixture (for example, slurry such as muddy water) is pumped through each filter plate 10 in a laminated state in which adjacent filter plates 10 are in close contact with each other (see FIGS. 2 and 8). It is press-fitted so that it flows into the part 16. The pressurized solid-liquid mixture accumulates in the filter chamber (filtration chamber) 40 shown in FIGS. 2, 8 and the like with a high internal pressure, and water is discharged from the minute gap of 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 solid (a dehydrated cake) is formed. Although details of the flow path of water flowing into the filter plate 10 through the eyes of the filter cloth 18 (details of the drainage path 28) are omitted in FIGS. The water that has flowed into the filter plate 10 through the eyes of the filter cloth 18 is discharged to the outside (lower portion) of the filter plate 10 through a drain passage 28 in the filter plate 10.

(Filter plate structure)
Next, the filter plate structure 3 will be described in detail.
As shown in FIG. 1, the filter plate structure 3 is a structure including a plurality of filter plates 10. Each filter plate 10 has the same structure.

  In the following description, a predetermined plurality of filter plates 10 arranged alternately are referred to as a filter plate portion 8, and a plurality of filter plates arranged alternately so as to be interposed between the plurality of filter plate portions 8. The plate 10 is used as the contact portion 9. In the filter plate structure 3, all the filter plate portions 8 and all the contact portions 9 have the same structure. Each of the contact portions 9 is arranged to face the filter plate portion 8, and the relative position with respect to the filter plate portion 8 is switched between a contact position where the filter plate portion 8 is in close contact and an open position displaced from the filter plate portion 8. The storage space is formed inside. In the filter plate structure 3, the filter chamber is constituted by the filter plate portion 8 and the close contact portion 9 when the close contact portion 9 is in the close contact position at the close contact position.

  Here, one configuration (the configuration of the filter plate 10) of the filter plate portion 8 and the contact portion 9 will be described. The filter plate 10 is a plate-shaped portion that becomes the filter plate portion 8 or the close contact portion 9, and is mainly configured by the substrate portion 11 and the filter cloth 18.

  The substrate portion 11 has a plate-like shape as a whole, and has two central concave portions 12 provided on both sides in the thickness direction, two pressing portions 14 provided on both sides in the thickness direction, and a hole portion 16. And

  Each of the two central concave portions 12 is a concave portion in the thickness direction of the substrate portion 11 at a position on the central side away from the peripheral edge of the substrate portion 11, and is formed in each filter plate 10 in FIG. Of the two central recesses 12 formed, the recess on one surface side (the surface side on which the annular convex portion 24 is formed) is defined as one central recess 12A (or simply, the central recess 12A), and the other surface ( The concave portion on the surface side where the annular concave portion 34 is formed) is defined as the other central concave portion 12B (or simply, the central concave portion 12B). As shown in FIG. 4, one central recess 12A has a rectangular outer diameter when viewed from the front side, and the other central recess 12B has an outer diameter when viewed from the rear side as shown in FIG. Are rectangular concave portions.

  In the present configuration, one central side concave portion 12A of the filter plate 10 functioning as the filter plate portion 8 functions as the concave portion 8A, and the other central side concave portion 12B of the filter plate 10 functioning as the filter plate portion 8 has the concave portion 8B. Function as The depressions 8A and 8B are formed on both outer surface portions (specifically, both plate surface portions opposed to the both contact portions 9) of the substrate portion 11 constituting the filter plate portion 8, and form a filter chamber 40 described later. Make up part. Further, one central side concave portion 12A of the filter plate 10 functioning as the contact portion 9 functions as the housing portion 9A, and the other central side concave portion 12B of the filter plate 10 functioning as the close contact portion 9 functions as the housing portion 9B. The accommodating portion 9A is formed in a concave shape, and when the contact portion 9 is in a close contact state in which the contact portion 9 is in close contact with the filter plate portion 8 on the side opposite to the containing portion 9A, the accommodating portion 9A forms a filtration chamber 40 together with the recessed portion 8B of the filter plate portion 8. . The accommodating portion 9B is formed in a concave shape, and when the contact portion 9 is in a close contact state in which the contact portion 9 is in close contact with the filter plate portion 8 on the side facing the accommodating portion 9B, the accommodating portion 9B and the hollow portion 8A of the filter plate portion 8 constitute a filtration chamber 40. .

  The pressing portion 14 is a portion that is annularly arranged around the central recess 12. Among these, one pressing portion 14A of each filter plate 10 is a portion facing and pressing against the other pressing portion 14B of another filter plate 10. As shown in FIG. 4, the pressing portion 14 </ b> A on one surface side (the surface side on which the annular convex portion 24 is formed) is a rectangular frame when viewed from the front side, and extends along the peripheral edge of the filter plate 10. Are arranged in a square shape (specifically, a square shape). As shown in FIG. 6, the pressing portion 14 </ b> B on the other surface side (the surface side on which the annular concave portion 34 is formed) is a rectangular frame when viewed from the front, and has a square shape along the periphery of the filter plate 10. They are arranged in a shape (specifically, a square shape).

  In the pressing portion 14 provided on the filter plate 10 functioning as the filter plate portion 8, one pressing portion 14A functions as a first pressing portion 8C, and the other pressing portion 14B functions as a first pressing portion 8D. . The first pressing portion 8C is arranged so as to surround the recessed portion 8A on the outer surface portion of the substrate portion 11 on one side in the thickness direction (one of the close contact portions 9), and when in the close contact state, is in contact with the first pressing portion 8C. It functions to press the part 9. The first pressing portion 8D is arranged so as to surround the recessed portion 8B on the outer surface of the substrate portion 11 on one side in the plate thickness direction (the other contact portion 9 side). It functions to press the part 9.

  In the pressing portion 14 provided on the filter plate 10 functioning as the contact portion 9, one pressing portion 14A functions as a second pressing portion 9C, and the other pressing portion 14B functions as a second pressing portion 9D. 9 C of 2nd press parts are arrange | positioned surrounding the accommodating part 9A in the outer surface part of one side (one filter plate part 8 side) of the board part 11 in the thickness direction, and oppose the 2nd press part 9C at the time of close contact state. It functions to press the first pressing portion 8D of the filter plate portion 8. The second pressing portion 9D is arranged so as to surround the housing portion 9B on the outer surface of the substrate portion 11 on one side in the plate thickness direction (the other filter plate portion 8 side), and faces the second pressing portion 9D when in a close contact state. It functions so as to press the first pressing portion 8C of the filter plate portion 8.

  As shown in FIGS. 4 and 7, the pressing portion 14A on one surface side (the surface side on which the annular convex portion 24 is formed) has an annular shape (specifically, a rectangular frame shape) around the central concave portion 12A. An opposed portion 22 to be arranged and an annular convex portion 24 arranged in an annular shape (specifically, a rectangular frame shape) around the center side concave portion 12A and projecting from the surface of the opposed portion 22 are formed. Have been.

  The annular convex portion 24 is made of an elastic material such as rubber or an elastomer other than rubber, and is provided in a groove (a groove formed so as to surround the central concave portion 12A) formed in the facing portion 22 of the pressing portion 14A. It is fixed to the pressing portion 14A in a fitted configuration. As shown in FIG. 7, the annular convex portion 24 has a curved shape such that the outer shape of a cross section cut in a plane direction orthogonal to the direction in which the annular convex portion 24 extends is convex outward. The annular convex portion 24 has a hollow shape with a void portion 24A formed therein. The void portion 24A is formed outside the position of the facing portion 22 in the thickness direction of the filter plate 10 (on the side farther than the center in the thickness direction), and extends along the direction in which the annular convex portion 24 extends. It is configured to be annularly arranged around the central recess 12.

  As shown in FIGS. 6 and 7, the pressing portion 14 </ b> B on the other surface side (the surface side on which the annular concave portion 34 is formed) is disposed in an annular shape (specifically, in a square frame shape) around the central concave portion 12 </ b> B. And an annular concave portion 34 which is arranged in an annular shape (specifically, a rectangular frame shape) around the center side concave portion 12B and which is depressed from the surface of the opposing portion 32. I have.

  In this configuration, one opposing portion 22 of the filter plate 10 functioning as the filter plate portion 8 functions as a first opposing portion 8E, and the other opposing portion 32 of the filter plate 10 functioning as the filter plate portion 8 has a first opposing portion. It functions as the unit 8F. Each of the first opposing portions 8E, 8F is arranged around the recessed portion 8A, 8B, and is a portion whose surface faces each side of the second pressing portions 9D, 9C when in a close contact state. Similarly, one facing portion 22 of the filter plate 10 functioning as the contact portion 9 functions as the second facing portion 9E, and the other facing portion 32 of the filter plate 10 functioning as the contact portion 9 serves as the second facing portion 9F. Function. Each of the second opposing portions 9E, 9F is a portion which is arranged around the accommodation portion 9A, 9B, and whose surface faces each side of the first pressing portions 8D, 8C when in a close contact state.

  As shown in FIG. 1, in each filter plate 10, the center side concave portion 12A on one surface side (the surface side on which the annular convex portion 24 is formed) and the center on the other surface side (the surface side on which the annular concave portion 34 is formed). A hole 16 is formed to penetrate between the side recess 12B in the thickness direction. The hole 16 functions as a flow path for flowing the solid-liquid mixture in the thickness direction of the filter plate 10 so as to pass through the inside of the filter plate 10. The hole portion 16 of the filter plate 10 functioning as the filter plate portion 8 is configured to pass through the inside of the substrate portion 11 and serves as a flow path leading to the recessed portions 8A and 8B. Similarly, the hole 16 of the filter plate 10 functioning as the contact portion 9 is configured to pass through the inside of the substrate 11 and to be a flow path leading to the housings 9A and 9B.

  As shown in FIGS. 1 and 3, the filter cloth 18 is arranged so as to cover the area outside the hole 16 on one side in the plate thickness direction, and as shown in FIGS. A filter cloth 18 is arranged so as to cover a region outside the hole 16 on the side. 2 and 8, the two filter cloths 18 interposed between the facing portion 22 and the facing portion 32 and between the annular convex portion 24 and the annular concave portion 34 are omitted. In FIGS. 1 to 8, the filter cloth 18A that covers one surface side (the surface side on which the annular convex portion 24 is formed) of the filter cloth 18 is referred to as the filter cloth 18A, and the other surface side (the surface side on which the annular concave portion 34 is formed). Is a filter cloth 18B.

  As shown in FIG. 3, the filter cloth 18A on one surface side (the surface side on which the annular convex portion 24 is formed) is fixed to an annular plate portion 15A, which will be described later. It is arranged entirely up to the periphery. As shown in FIG. 5, the filter cloth 18B on the other surface side (the surface side on which the annular concave portion 34 is formed) is fixed to an annular plate portion 15B, which will be described later, and the outer periphery of the substrate portion 11 in a region outside the annular plate portion 15B. All parts are arranged up to the section. 1, 2, 7, 8, etc., the filter cloth 18 is conceptually shown by a two-dot chain line, and in FIGS. 3, 5, the filter cloth 18 is conceptually shown as a pattern area. I have. In the examples of FIGS. 2 and 8, the filter cloths 18A and 18B are also present in the portion sandwiched between the pressing portions 14A and 14B, but the illustration of the filter cloths 18A and 18B (illustration of the two-dot chain line) is omitted. doing. In the example of FIG. 1 and the like, in each of the filter plates 10, the peripheral edge of the filter cloth 18A and the peripheral edge of the filter cloth 18B are connected, but each peripheral edge 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 a region outside the hole portion 16, and the covering region of the filter cloth 18A is not limited to the configuration of FIGS. .

  In the present configuration, the filter cloth 18 disposed on the filter plate 10 functioning as the filter plate portion 8 is disposed so as to cover the inner surfaces of the depressions 8A and 8B and cover the surfaces of the first pressing portions 8C and 8D. The filter cloth 18A on the side is disposed across the depression 8A and the first pressing part 8C, and the filter cloth 18B on the other side is disposed across the depression 8B and the first pressing part 8D. The filter cloth 18 disposed on the filter plate 10 functioning as the close-contact part 9 is disposed so as to cover the inner surfaces of the housing parts 9A and 9B and cover the surfaces of the second pressing parts 9C and 9D. Is arranged over the accommodation portion 9A and the second pressing portion 9C, and the filter cloth 18B on the other side is arranged over the accommodation portion 9B and the second pressing portion 9D.

  In the above configuration, the annular convex portion 24 provided on the first pressing portion 8C functions as the first seal portion 8G, is disposed around the depression 8A, and becomes convex from the surface of the first facing portion 8E. The annular concave portion 34 provided in the first pressing portion 8D functions as the first seal portion 8H, is disposed around the concave portion 8B, and becomes concave from the surface of the first facing portion 8F.

  The annular convex portion 24 provided on the second pressing portion 9C functions as a second seal portion 9G. The second seal portion 9G is arranged around the accommodation portion 9A, protrudes from the surface of the second facing portion 9E, and presses against the first seal portion 8H when in a close contact state. The annular concave portion 34 provided in the second pressing portion 9D functions as the second seal portion 9H. The second seal portion 9H is arranged around the accommodation portion 9B, becomes concave from the surface of the second facing portion 9F, and presses against the first seal portion 8G when in a close contact state.

  The filter plate structure 3 shown in FIG. 1 and the like has a state in which adjacent filter plates 10 are separated as shown in FIGS. 1 and 7, and a state in which adjacent filter plates 10 are in close contact as shown in FIGS. You can switch to The thickness direction of the plurality of filter plates 10 is aligned as shown in FIG. 1 by rails not shown in FIG. 1 and the like (that is, the thickness direction of each filter plate 10 is aligned so as to be the same direction). And the positions of the outer peripheral edges (the positions of the outer peripheral edges in the plane direction orthogonal to the thickness direction) of each filter plate 10 are aligned, and by moving along the rail in such aligned state, In the plurality of filter plates 10, adjacent filter plates can approach and separate from each other.

  As shown in FIGS. 2 and 8, 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, the annular convex portion 24 of one filter plate 10 Into the annular concave portion 34 of the filter plate 10 and press the inner surface of the annular concave portion 34 so that the opposing portion 22 of one filter plate 10 and the opposing portion 32 of the other filter plate 10 press each other. Eggplant In the example of FIG. 8, two filter cloths 18A and 18B that cover the two filter plates 10 are interposed between the facing portion 22 of one filter plate 10 and the facing portion 32 of the other filter plate 10, respectively. Thus, the facing portion 22 of one filter plate 10 and the facing portion 32 of the other filter plate 10 press against each other. That is, the opposing portion 22 of one filter plate 10 and the opposing portion 32 of the other filter plate 10 press each other via the filter cloth 18A of the one filter plate 10 and the filter cloth 18B of the other filter plate 10. . Two filter cloths 18A and 18B that cover the two filter plates 10 are also interposed between the annular convex portion 24 and the annular concave portion 34. In this state (that is, the outer surface of the annular convex portion 24 and the annular concave portion 34). In a state where the filter cloths 18A and 18B are interposed between the inner surface and the inner surface), the annular convex portion 24 and the annular concave portion 34 press against each other. That is, the annular convex portion 24 of the one filter plate 10 presses the inner surface inside the annular concave portion 34 via the filter cloth 18A of the one filter plate 10 and the filter cloth 18B of the other filter plate 10.

  As shown in FIG. 8, in a stacked state in which the adjacent filter plates 10 are brought into close contact with each other, the solid-liquid mixture is passed through the hole 16 by the first injection device 60 (for example, a slurry supply device including a pump) shown in FIG. When poured, the injected solid-liquid mixture is accumulated in a filter chamber (filtration chamber) 40 (see also FIG. 15) shown in FIGS. Is discharged to the substrate portion 11 side (that is, the back side of the filter cloth 18). Then, a dewatered cake is formed between the adjacent filter plates 10 (specifically, between the filter cloths on the adjacent filter plates 10). The dehydrated cake is an object in which a certain amount of water has been removed from the solid-liquid mixture 7 injected into the filtration chamber 40 as shown in FIG.

  In this configuration, a substrate portion 11 is provided in each filter plate 10, and the substrate portion 11 is formed in a plate shape, and one of the two central concave portions 12 has a central concave portion 12 </ b> A and two pressing portions. 14, one pressing portion 14A is formed on one plate surface side (the above-described one surface side), and the other central side concave portion 12B of the two central side concave portions 12 and the two pressing portion 14 And the other pressing portion 14B are formed on the other plate surface side (the above-mentioned other surface side). A filter cloth 18A is provided so as to cover the inner wall of one central side recess 12A, and a filter cloth 18B is provided so as to cover the inner wall of the other central side recess 12B. A drainage channel 28 (one drainage channel 28A and the other drainage channel 28B) communicating with the outside of the filter plate 10 is provided on the back side of the filter cloth 18 in the one central recess 12A and the other central recess 12B. .

In each of the central concave portion 12A and the other central concave portion 12B of the filter plate 10, the inner wall portion (inner surface portion) on the deepest side in the depth direction allows the liquid to pass therethrough in its own plate thickness direction. Drain plates 13 each having a water part (one drain plate 13A and the other drain plate 13B) are provided. Each of the water passage portions of the drainage plates 13A and 13B may be constituted by a large number of holes, or may be constituted by grooves or notches. The drainage plates 13A and 13B may have any configuration as long as water can pass from the front side to the back side while the filter cloth 18 is supported on the front side, and a plurality of through holes are formed in the plate-like body. Or a net-like configuration.
A plate-like body 11A whose both sides in the plate thickness direction are covered by the respective drain plates 13 is provided inside the board portion 11 in the plate thickness direction (the plate thickness direction of the filter plate 10) with respect to the respective drain plates 13. I have. As shown in FIGS. 1 and 4, the one pressing portion 14A is a rectangular frame fixed on one surface side of the plate 11A along the periphery of the plate 11A. . Further, the other pressing portion 14B is a rectangular frame fixed on the other surface side of the plate-shaped body 11A along the periphery 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 constituting the pressing portion 14A. One drainage plate 13B is fixed with its peripheral edge sandwiched between the plate-like body 11A and the inner edge of the frame constituting the pressing portion 14B.

  Drainage channels 28A and 28B communicating with the outside of the filter plate 10 are formed between the respective drainage plates 13 (one drainage plate 13A and the other drainage plate 13B) and the plate-like body 11A. Each of the drainage channels 28A and 28B is configured as a water channel through which water passes.

  The drainage channel 28A formed on the back side of the filter cloth 18A in the central recess 12A is, for example, as shown in FIGS. In the examples of FIGS. 10 to 12, a plurality of drainage channels 28 </ b> A are formed in a groove shape at the lower end side on one surface side of the substrate portion 11 (vertical lower end side at the time of installation). It is configured to allow water to flow. One end (upper end) side of the plurality of drainage channels 28A is located behind 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. The other end (lower end) 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 a space exists between the back surface of the drainage plate 13A and the surface of the plate-shaped body 11A, and it is desirable that this space communicates with each of the drainage channels 28A. Then, the water that has flowed into the back side of the drain plate 13A easily flows to the outside of the filter plate 10 through each drain passage 28A.

  The drainage channel 28B formed on the back side of the filter cloth 18B in the central recess 12B is, for example, as shown in FIG. 10, FIG. 13, and FIG. In the examples of FIGS. 10, 13, and 14, a plurality of drainage channels 28 </ b> B are formed in a groove shape at the lower end on one surface side (the lower end in the vertical direction at the time of installation) of the substrate portion 11. Water is allowed to flow in the path 28B. One end (upper end) of the plurality of drainage channels 28B is located behind 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. The other end (lower end) 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-shaped body 11B, and it is desirable that this space communicates with each of the drainage channels 28B. Then, the water that has flowed into the back side of the drain plate 13B easily flows to the outside of the filter plate 10 through each drain passage 28B.

  In addition, in the examples of FIGS. 10 to 15, the configuration in which the plurality of drain passages 28 are provided on the lower end side of the filter plate 10 is illustrated, but water flowing into the drain plate 13 side through the filter cloth 18 is filtered. Any flow path can be used as long as it can be discharged to the outside of 10.

  As shown in FIG. 1, FIG. 2, FIG. 3, and FIG. 5, the filter plate 10 includes a pair of annular plate portions 15A that are fixed in one central concave portion 12A and the other central concave portion 12B of the substrate portion 11, respectively. , 15B. 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 one-side through-hole-side protrusions 17A protrude from the one-side annular plate 15A, and the plurality of through-hole-side protrusions 17A are formed around the hole 16 as shown in FIG. It is arranged so as to surround the part 16. Similarly, a plurality of through-hole-side protrusions 17B on the other surface side protrude from the other-side annular plate portion 15B, and the plurality of through-hole-side protrusions 17B, as shown in FIG. It is arranged so as to surround the hole 16 at the periphery. The hole portion 16 is formed so as to communicate from one of the pair of annular plate portions 15A and 15B to the other of the annular plate portions 15B. Specifically, the hole portion 16 is formed of a pair of annular plate portions 15A and 15B. The inside of the cylindrical part connecting the parts 15A and 15B is a hole part 16. In this configuration, as shown in FIG. 2, when one side of one filter plate 10 and the other side of the other filter plate 10 are overlapped so as to press against each other, one side of one filter plate 10 And the through-hole-side projection 17B on the other surface of the other filter plate 10 are opposed to each other. As shown in FIG. 2, when the through-hole-side projection 17A on one side of one filter plate 10 and the through-hole-side projection 17B on the other side of the other filter plate 10 face each other, these through-hole side projections 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 opposed through-hole-side projections 17A and 17B are opposed). Contact.) In the example of FIG. 2 and the like, the filter cloth 18 is not interposed between the opposed through-hole-side projections 17A and 17B.

  The drainage plate side projections 19 (one drainage plate side projection 19A and the other drainage side) projecting in the thickness direction from each drainage plate 13 are provided in one central side recess 12A and the other central side recess 12B. Each of the plate-side protrusions 19B) is formed. One drainage plate side projection 19A is fixed to at least one of the drainage plate 13A and the plate-like body 11A, and has a configuration protruding from the surface of the drainage plate 13A in the plate thickness direction (the plate thickness direction of the filter plate 10). Eggplant The drainage plate-side projection 19A has a tapered shape that becomes thinner as it approaches the front end side in its own protruding direction. In the example of FIG. 4, a plurality of drainage plate side projections 19 </ b> A having such a configuration are arranged so as to surround the hole 16. The other drainage plate side projection 19B is configured to be fixed to at least one of the drainage plate 13B and the plate-like body 11A and protrude from the surface of the drainage plate 13B in the plate thickness direction (the plate thickness direction of the filter plate 10). Eggplant The drainage plate side projection 19B has a tapered shape that becomes thinner as it approaches the tip end side in its own protruding direction. In the example of FIG. 6, a plurality of drainage plate side projections 19 </ b> B having such a configuration are arranged so as to surround the hole 16. Then, as shown in FIG. 2, when one side of one filter plate 10 and the other side of the other filter plate 10 are overlapped so as to press against each other, each of the one side of one filter plate 10 The drain plate side projection 19A and each drain plate side projection 19B on the other surface side of the other filter plate 10 are configured to face each other. As shown in FIG. 2, when the drainage plate side projection 19A on one side of one filter plate 10 and the drainage plate side projection 19B on the other side of the other filter plate 10 face each other, these drainage plate side projections are formed. The interval between 19A and 19B (the interval between the tip portions) is smaller than the interval between the drain plates 13A and 3B facing each other. In the example of FIG. 2 and the like, the filter cloths 18A and 18B are interposed between the opposing drain plate side projections 19A and 19B, and the opposing drain plate side projections 19A and 19B form the filter cloths 18A and 18B. It is sandwiched.

  The filter press device 1 shown in FIG. 9 has such a filter plate structure 3. Specifically, as shown in FIGS. 15 and 16, a plurality of filter plates 10 constituting the filter plate structure 3 are formed. The guide rails 90 (guide rails) are aligned in a predetermined posture (that is, a posture in which the thickness direction of each filter plate 10 is the same direction and a position in which the position of the outer peripheral edge of each filter plate 10 is aligned). 90A, 90B), the plurality of filter plates 10 can be moved, and by such a moving operation, adjacent filter plates in the plurality of filter plates 10 can approach and separate from each other. I have.

  Although not shown in FIGS. 1 to 14, as shown in FIGS. 16 and 17, each filter plate 10 projects laterally from both left and right sides of the substrate unit 11 in each filter plate 10. A pair of overhang portions 41 and 42 are provided. The pair of overhang portions 41 and 42 function as a pair of supported portions, and are supported while being mounted on the guide rails 90A and 90B. The pair of overhangs 41 and 42 move while being placed on the guide rails 90A and 90B, so that each filter plate 10 maintains a predetermined posture in a predetermined direction (the thickness direction of each filter plate 10). It is designed to move.

  The filter press device 1 includes a holding device 50, a first injection device 60 (hereinafter also referred to as a slurry supply device), a second injection device 70 (hereinafter also referred to as an air supply device), A supply path 62 for supplying the liquid mixture 7, a supply path 72 for supplying air, a first switching unit 81 for switching between opening and shutting off the supply path 62, a second switching unit 82 for switching between opening and shutting off the supply path 72, and the like. Is provided. Although not shown, control for controlling the operation (operation timing, control amount, and the like) of 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 is performed. A device (for example, an information processing device such as a computer) is also provided.

  The holding device 50 includes a pair of guide rails 90 (guide rails 90A and 90B), a driving device 54, and fixed walls 51 and 52, and has a configuration in which these are integrally assembled. The driving device 54 is configured to control the operating 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), the drive shaft 54B connected to the operating portion 54C, and the drive shaft 54B. And a drive unit 54A for moving the filter plate in the direction (the direction of maintaining the thickness of each filter plate 10 of the filter plate group 5). When the drive unit 54A moves the action unit 54C to the fixed wall 51 side 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. 15 and 16. Then, adjacent filter plates in the filter plate group 5 come into contact with each other. On the other hand, when the drive unit 54A moves the action unit 54C to the fixed wall 52 side via the drive shaft 54B, the adjacent filter plates in the filter plate group 5 are separated from each other. For example, if an interval regulating portion (not shown) for regulating the interval so that the maximum interval between adjacent filter plates becomes a predetermined interval in the plurality of filter plates 10 is provided, the action portion 54 </ b> C of the filter plate group 5 When operating to move the filter plate 10 to the fixed wall 52 side while engaging or holding the filter plate 10 at the end portion (the end portion on the fixed wall 52 side), adjacent filter plates between the respective filter plates are operated. Each filter plate moves so that the plates are separated. Note that the example shown here is merely an example, and the plurality of filter plates 10 are placed in a predetermined posture (that is, the posture in which the thickness direction of each filter plate 10 is the same direction and the position of the outer peripheral edge of each filter plate 10 is the same). The holding device may have another configuration as long as it can approach and separate the respective filter plates while aligning them in the aligned posture.

  As described above, the holding device 50 moves the action portion 54C to the fixed wall 51 side, thereby arranging the plurality of filter plates 10 in an overlapping state as shown in FIGS. In between, the annular convex portion 24 of one filter plate 10 enters the annular concave portion 34 of the other filter plate 10 to press the inside of the annular concave portion 34, and the opposite portion 22 of one filter plate 10 and the other It can be held in a holding state (first holding state) in which the opposing portions 32 of the plate 10 press against each other (refer to FIGS. 2 and 8 for a specific state between adjacent filter plates).

  The first injection device 60 is a transfer device that transfers the solid-liquid mixture from a solid-liquid mixture storage unit (not shown, for example, a slurry storage tank) to the filter plate group 5 side, and the first switching unit 81 is in an open state. When the supply path 62 is in communication with the hole 16 at the end of the filter plate group 5, the solid-liquid mixture can be injected into the filter plate group 5 through the supply path 62. Specifically, when the filter plate group 5 including the plurality of filter plates 10 is held in the first holding state by the holding device 50 as shown in FIGS. The solid-liquid mixture 7 is injected into the inside of the plurality of filter plates 10 from the hole 16 of the filter plate 10 at one end of the group 5. The first switching unit 81 is a device that switches between a first stop state in which the flow of the fluid at one end of the filter plate group 5 is stopped and a first release state in which the first stop state is released. The supply path 62 (pipe) is configured by a known electromagnetic valve that switches between an open state and a closed state, and the opening and closing of the first switching unit 81 is controlled by a control device (not shown).

  The second injection device 70 is configured as a known air (air) supply device capable of pumping air (air), the second switching unit 82 is in the open state, and the supply path 72 is in the filter plate group 5. The air (air) can be injected into the filter plate group 5 through the supply path 72 when the air is communicated with the hole 16 at the end of the filter plate. Specifically, when the filter plate group 5 including the plurality of filter plates 10 is held in the first holding state by the holding device 50 as shown in FIGS. Air is injected into the inside of the plurality of filter plates 10 from the hole 16 at the other end of the group 5 opposite to the one end. The second switching unit 82 is a device that switches between a second stop state in which the inflow and outflow of the fluid at the other end of the filter plate group 5 is stopped and a second release state in which the second stop state is released. , A known electromagnetic valve that switches the supply path 72 (pipe line) between an open state and a closed state, and the opening and closing of the second switching unit 82 is controlled by a control device (not shown).

  In the filter press device 1, a state in which the second switching unit 82 switches to the second stopped state (a state in which the supply path 72 is shut off) when the holding device 50 is holding in the first holding state as shown in FIG. In addition, the first injection device 60 injects the solid-liquid mixture 7 into the filter plate group 5 in a state where the first switching unit 81 switches to the first release state (the state in which the supply path 62 is opened). Then, after the solid-liquid mixture 7 is injected by the first injection device 60, when the holding device 50 is held in the first holding state as shown in FIGS. The second injection device 70 switches the filter plate group 5 in a state in which the state is switched to a state (a state in which the supply path 62 is shut off) and in a state in which the second switching unit 82 is switched to a second open state (a state in which the supply path 72 is opened). By injecting air into the inside, the air flows from the hole 16 side of the other end to the drain passage 28 side of each filter plate 10, and the liquid of the solid-liquid mixture 7 existing inside the filter plate group 5. The (moisture) is discharged to the outside of the filter plate group 5 through the drain passage 28 together with the air. The operation timing and operation time of each device are controlled by a control device (not shown).

  Further, in this configuration, as shown in FIGS. 16 and 17, a pair of regulating portions 94 (regulating portions 94A and 94B) are arranged above the pair of guide rails 90A and 90B. The pair of guide rails 90A and 90B are arranged so as to be opposed to both side portions of each filter plate 10 and extend along the thickness direction. The pair of restricting portions 94A and 94B are respectively arranged opposite to both side portions of each filter plate 10 at positions above the center position in the vertical direction of each filter plate 10 and are arranged in the thickness direction. It is configured to extend along. Specifically, concave portions 41A and 42A are formed on the upper surfaces of a pair of overhanging portions 41 and 42 formed on each filter plate 10, respectively. The concave portions 41A are arranged in the concave portions 41A and 42A, respectively. , 42A are provided with a pair of regulating portions 94A, 94B, respectively.

(Example of effect)
Next, effects of the present configuration will be exemplified.
In the above-described filter plate structure 3, as shown in FIG. 2, when one filter plate 10 and another filter plate 10 are overlapped, the annular projection 24 of one filter plate 10 forms an annular shape of another filter plate 10. After entering into the concave portion 34 and pressing the inside of the annular concave portion 34, the opposing portion 22 of one filter plate 10 and the opposing portion 32 of the other filter plate 10 press each other. With such a configuration, the two filter plates 10 are brought into close contact with each other, and the filter chamber 40 (the solid-liquid mixture formed by the central concave portion 12 of one filter plate 10 and the central concave portion 12 of the other filter plate 10) is formed. When the (inflow region) is configured, a region that can ensure stronger adhesion can be arranged in a ring shape so as to surround a portion configuring the filter chamber 40.

  Specifically, in the first seal portion 8G and the second seal portion 9H that press against each other in the close contact state, when one seal portion (first seal portion 8G) is in the close contact state, the other seal portion (8G). It has a convex portion that is convex toward the second seal portion 9H) and is disposed so as to surround the filter chamber 40. When the other seal portion (the second seal portion 9H) is in the close contact state, the other seal portion (the first seal portion 8G) is recessed to the opposite side and surrounds the filter chamber 40. Have. Then, in the close contact state, the convex portion (first seal portion 8G) and the covering portion (filter cloth 18) covering the convex portion (first seal portion 8G) enter into the concave portion (second seal portion 9H). The inner surface of the concave portion (second seal portion 9H) is pressed. That is, when the filter cloth 18 is sandwiched between the convex portion (first seal portion 8G) and the concave portion (second seal portion 9H) in the close contact state, the convex portion (first seal portion 8G) is The inner surface of the concave portion (second seal portion 9H) is pressed while entering the concave portion (second seal portion 9H).

  Further, in the first seal portion 8H and the second seal portion 9G which press each other when in the close contact state, one seal portion (the second seal portion 9G) is in the close contact state and the other seal portion (the first seal portion 9G). It has a convex portion that is convex on the side of the portion 8H) and is disposed so as to surround the filtration chamber 40. When the other seal portion (the first seal portion 8H) is in the close contact state, the other seal portion (the second seal portion 9G) is recessed to the opposite side and surrounds the filter chamber 40. Have. Then, in the close contact state, the convex portion (the second seal portion 9G) and the covering portion (the filter cloth 18) covering the convex portion (the second seal portion 9G) enter the concave portion (the first seal portion 8H). The inner surface of the concave portion (first seal portion 8H) is pressed. That is, when the filter cloth 18 is sandwiched between the convex portion (second seal portion 9G) and the concave portion (first seal portion 8H) in the close contact state, the convex portion (second seal portion 9G) is The inner surface of the concave portion (first seal portion 8H) is pressed while entering the concave portion (first seal portion 8H).

  As shown in FIG. 1, a substrate 11 is provided in each filter plate 10, and the substrate 11 is formed in a plate shape, and one of the two central recesses 12 and two central recesses 12 </ b> A. One pressing portion 14A of the pressing portions 14 is formed on one plate surface side, and the other central pressing portion 12B of the two central pressing portions 12 and the other pressing portion of the two pressing portions 14 are provided. 14B is formed on the other plate surface side. A filter cloth 18A is provided so as to cover the inner wall of one central side recess 12A, and a filter cloth 18B is provided so as to cover the inner wall of the other central side recess 12B. A drainage passage 28 communicating with the outside of the filter plate 10 is provided on the back side of the filter cloth 18 in one of the central recess 12A and the other central recess 12B. Due to such a configuration, as shown in FIG. 2, one filter plate 10 is overlapped with one filter plate 10 in a configuration in which one side of the filter plate 10 and the other side of the other filter plate 10 are pressed against each other. A filter chamber 40 is provided between one central recess 12A of the filter 10 and the other central recess 12B of the other filter plate 10 (specifically, between the two filter cloths 18A and 18B covering these inner walls). Is done. Then, when the slurry (muddy water or the like) from the hole 16 flows into the region inside the filter chamber 40 at a high pressure, the peripheral side of the filter chamber 40 is sealed in a state in which the adhesiveness is enhanced. Therefore, it is possible to reliably suppress the occurrence of leakage or blowing of the slurry from the peripheral portion, and in such a state that the leakage or the like from the peripheral portion is reliably suppressed, the water content of the slurry supplied into the filter chamber 40 is reduced. Is passed through the filter cloths 18A and 18B and led to the drain passages 28A and 28B, and solid matter of slurry (particles that cannot pass through the filter cloths 18A and 18B) is left in the filter chamber 40. Water and solids can be separated by the filter cloths 18A and 18B. The water in the slurry that has passed through the filter cloths 18A and 18B can be discharged to the outside of the filter plate 10 through the drain passages 28A and 28B, and solids that cannot pass through the filter cloths 18A and 18B are stored in the filter chamber 40. It can remain in the area and be configured as a dewatered cake.

  Further, in the filter plate structure 3 shown in FIG. 1 and the like, since the annular projection 24 is made of an elastic material, when the annular projection 24 is inserted into the annular recess 34 and pressed, the vicinity of the annular recess 34 is reduced. It can be deformed according to the shape, and the adhesion between the annular convex portion 24 and the annular concave portion 34 can be further enhanced.

  Further, in the filter plate structure 3, as shown in FIGS. 1, 7 and the like, the annular convex portion 24 has a hollow shape in which a void portion 24A is formed. The void portion 24 </ b> A is configured to extend along the direction in which the annular convex portion 24 extends and to be configured to be annularly arranged around the central concave portion 12. By doing so, the annular convex portion 24 is more likely to be elastically deformed, and the adhesion between the annular convex portion 24 and the annular concave portion 34 is more easily enhanced.

  As shown in FIG. 1, FIG. 2, FIG. 3, and FIG. 5, the filter plate 10 includes a pair of annular plate portions 15A that are fixed in one central concave portion 12A and the other central concave portion 12B of the substrate portion 11, respectively. , 15B. 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 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, as shown in FIG. When one side of the filter plate 10 and the other side of the other filter plate 10 are overlapped so as to press against each other, the through-hole-side projection 17A on one side of one filter plate 10 and the other filter plate The through-hole-side projection 17B on the other surface side of the pair 10 is opposed to each other while approaching each other. With this configuration, for example, even if one filter plate 10 bends and deforms toward the other filter plate 10 due to, for example, the solid-liquid mixture flowing in at a high pressure, the through-hole-side projections The portions 17A and 17B come into contact with each other, and bending deformation is suppressed. Therefore, it is easier to more effectively prevent a situation in which the annular convex portion 24 of one filter plate 10 comes off the annular concave portion 34 of another filter plate 10 due to the large deformation of the filter plate 10. In particular, the vicinity of the hole 16 is a portion where the displacement becomes large when the filter plate 10 bends and deforms. However, according to the above configuration, the displacement of this portion can be regulated, so that the flexural deformation of the filter plate 10 Is extremely high.

  The through-hole-side projection 17 has a tapered shape that becomes thinner as it approaches the distal end, and the through-hole-side projection 17A on one side of one filter plate 10 and the other side of the other filter plate 10 penetrate. The hole-side projections 17B are configured such that the tip ends, which are the thinnest portions, are opposed to each other. With such a configuration, it is possible to suppress the reduction in the volume of the solid matter (cake) remaining in the filter chamber while producing the effect of suppressing the bending deformation of the filter plate 10.

  In each of the one central side concave portion 12A and the other central side concave portion 12B of the filter plate 10, a drain plate 13 (a plurality of holes formed in the thickness direction is formed on the inner wall portion on the deepest side in the depth direction). One drainage plate 13A and the other drainage plate 13B) are provided, respectively. Further, a plate-like body 11A whose both sides in the plate thickness direction are covered by the respective drain plates 13 is provided inside the board portion 11 in the plate thickness direction (the plate thickness direction of the filter plate 10) with respect to the respective drain plates 13. Have been. Drain passages 28A and 28B communicating with the outside of the filter plate 10 are formed between the respective drain plates 13 (one drain plate 13A and the other drain plate 13B) and the plate-like body 11A. The drainage plate-side projections 19 (the one drainage plate-side projection 19A and the other one) protrude in the thickness direction from each drainage plate 13 in the one central side recess 12A and the other central side recess 12B. Drain plate side projections 19B) are formed. As shown in FIG. 2, when one side of one filter plate 10 and the other side of another filter plate 10 are overlapped so as to press against each other, a drain plate side protrusion on one side of one filter plate 10 is provided. The portion 19A and the drain plate side protrusion 19B on the other surface side of the other filter plate 10 are configured to face each other. With such a configuration, for example, even if one of the filter plates 10 bends and deforms toward the other filter plate 10 due to the solid-liquid mixture flowing at a high pressure or the like, the drain plate-side protrusion is formed. The portions 19 come into contact with each other, and bending deformation is suppressed. Therefore, it is easier to more effectively prevent a situation in which the annular convex portion 24 of one filter plate 10 comes off the annular concave portion 34 of another filter plate 10 due to the large deformation of the filter plate 10.

  The drainage plate side projection 19 has a tapered shape that becomes thinner as it approaches the distal end side, and the drainage plate side projection 19A on one side of one filter plate 10 and drainage on the other side of the other filter plate 10. The plate-side protruding portions 19B are configured such that the tip portions, which are the thinnest portions, are opposed to each other. With such a configuration, it is possible to suppress the reduction in the volume of the solid matter (cake) remaining in the filter chamber while producing the effect of suppressing the bending deformation of the filter plate 10. Moreover, if the distal end is thinner, the drain plate side projection 19 reduces the pressure received from the solid-liquid mixture on the relatively thin distal end, and the substrate portion on the relatively thick base end. The connection with the side can be firmly secured.

In the filter press device 1, the holding device 50 arranges the plurality of filter plates 10 in an overlapped state, and the annular protrusion 24 of one filter plate 10 is formed between the adjacent filter plates so that the annular shape of the other filter plate 10 is changed. It is possible to enter the concave portion 34 and press the inside of the annular concave portion 34 and hold it in the first holding state in which the opposing portion 22 of one filter plate 10 and the opposing portion 32 of the other filter plate 10 press against each other. Furthermore, when the filter plate group 5 including the plurality of filter plates 10 is held in the first holding state by the holding device 50, the second injection device 70 opens the hole of the filter plate 10 at one end of the filter plate group 5. A first injection device 60 for injecting the solid-liquid mixture 7 into the inside of the plurality of filter plates 10 from the portion 16, and one end of the filter plate group 5 when the filter plate group 5 is held in the first holding state Air can be injected into the inside of the plurality of filter plates 10 from the hole 16 at the other end on the opposite side.
With such a configuration, when the filter plate group 5 is held in the first holding state (the annular projection 24 of one filter plate 10 is formed between the adjacent filter plates so that the ring shape of the other filter plate 10 In addition to performing the operation of injecting the solid-liquid mixture 7 to form a cake between the filter plates when the packing effect is enhanced by entering the recesses 34), the filter plates 5 It is also possible to perform an operation of injecting air and flowing air into the inside of the filter plate group 5 when held in the state. Between the adjacent filter plates, if the annular convex portion 24 of one filter plate 10 enters the annular concave portion 34 of the other filter plate 10 and the packing effect is enhanced, air flows inside the filter plate group 5. At this time, it is possible to reliably prevent air from leaking from a predetermined position (a position where the above-described packing effect is obtained) on the periphery of each filter plate 10.

  The filter press device 1 further includes a first switching unit 81 that switches between a first stop state in which the flow of the fluid at one end of the filter plate group 5 is stopped and a first release state in which the first stop state is released. And a second switching unit 82 that switches between a second stop state in which the inflow and outflow of fluid on the other end side of the filter plate group 5 is stopped and a second release state in which the second stop state is released. When the holding device 50 is holding in the first holding state, the first injection device 60 moves the solid-liquid mixture into the filter plate group 5 in a state where the second switching unit 82 switches to the second stop state. 7, the first switching unit 81 switches to the first stopped state when the holding device 50 is held in the first holding state after the solid-liquid mixture 7 is injected by the first injection device 60. Then, the second injection device 70 injects air into the filter plate group 5 to flow air from the hole 16 at the other end to the drain passage 28 side of each filter plate 10, and the filter plate group 5 The liquid of the solid-liquid mixture 7 existing inside the filter plate is discharged to the outside of the filter plate group 5 through the drainage channel 28 together with air.

  With this configuration, not only the drainage from the drainage channel by injecting the solid-liquid mixture 7 at high pressure, but also the forced drainage effect by passing air through the solid-liquid mixture 7 is taken into account. Thus, a cake having a lower moisture content can be formed. However, when air is passed through the interior of the solid-liquid mixture 7 as described above, it is necessary to supply the air at an extremely high pressure. There is a possibility that the solid-liquid mixture 7 leaks together with air from the peripheral portion between them. However, in this configuration, the feature that “the annular convex portion 24 of one filter plate 10 enters the annular concave portion 34 of the other filter plate 10 between the adjacent filter plates to enhance the packing effect” and “the filter plate The liquid of the solid-liquid mixture 7 existing inside the group 5 is discharged together with air to the outside of the filter plate group 5 through the drainage passage 28 ". It is possible to form a cake with a lower moisture content while suppressing leakage of the air and solid-liquid mixture 7.

  The filter press device 1 includes a pair of guide rails 90 that guide the moving direction of each filter plate 10 in the thickness direction in a state where the plurality of filter plates 10 are arranged in the thickness direction of each filter plate 10. And a pair of restricting portions 94 disposed above each of the pair of guide rails 90. The filter press device has a configuration in which each of the pair of guide rails 90 is disposed so as to face both sides of each filter plate 10 and extends along the thickness direction. Then, each of the pair of restricting portions 94 is disposed opposite to both side portions of each filter plate 10 at a position above the center position in the vertical direction of each filter plate 10 and along the thickness direction. It is configured to extend. As described above, the pair of regulating portions 94 are respectively arranged so as to face both side portions of each filter plate 10, and extend in the thickness direction of each filter plate 10 (the moving direction of each filter plate 10). If a pair of restricting portions 94 are provided, and the restricting portions 94 are provided at positions above the vertical center positions of the respective filter plates 10, the plurality of filter plates 10 are brought into contact with each other to perform solid-liquid mixing. When the body 7 is poured, and the state shown in FIG. 19 (A) is changed to the state shown in FIG. 19 (B) to perform a discharge operation in which the distance between adjacent filter plates is increased to drop the cake 7A downward. Even if the cake to be discharged is inclined and falls off as shown in FIG. 18 (B), the cake is dropped downward while restricting the inclination and lateral movement of the cake by the pair of regulating portions 94A and 94B. be able to. If such restriction portions 94A and 94B do not exist, there is a possibility that cake may fall on the upper surface of the guide rail 90 as shown in FIG.

<Second embodiment>
Next, a second embodiment will be described with reference to the drawings. These drawings are used to explain technical features that can be adopted by the present invention. Unless otherwise specified, the structure of the device and the like described below are not intended to limit the invention, but are merely illustrative examples.

  A filter plate structure 203 (hereinafter, also referred to as a filter plate structure 203) of the filter press device according to the second embodiment shown in FIG. 20 is a filter plate structure used in the dual filter press device 201 shown in FIG. As shown in FIG. 28, the filter plate structure 203 includes a plurality of filter plate portions 208, a filter plate portion group 206 having each filter plate portion 208 as an element, and a plurality of frames (close contact portions 209). An element group 205 including a frame group 207 having each frame (the contact portion 209) as an element is included. In the element group 205, the elements (the filter plate 208) constituting the filter plate group 206 and the elements (the contact portions 209) constituting the frame group 207 are alternately arranged.

  Each of the filter plate portions 208 constituting the filter plate portion group 206 as shown in FIG. 28 has a part when compared with each of the filter plate portions 8 of the filter plate structure 3 of the first embodiment: FIGS. It has the same configuration except for. Specifically, the configuration shown in FIG. 1 and the like is provided except that an annular convex portion (first seal portion 224B) is provided instead of the annular concave portion 34 in the filter plate portion 8 shown in FIG. 1 and the like. Has the same configuration as the filter plate portion 8 indicated by. That is, the substrate portion 211 has the same configuration as the substrate portion 11 shown in FIG. 1 and the like except that an annular convex portion (first seal portion 224B) is provided instead of the annular concave portion 34 in the filter plate portion 8. I have. As shown in FIG. 20, the filter cloth 218 has the same configuration as the filter cloth 18 of the filter plate portion 8 shown in FIG. As shown in FIG. 20, in the substrate portion 211, the plate-like body 211A has the same configuration as the plate-like body 11A of the filter plate portion 8 shown in FIG. As shown in FIG. 20, the depression 212A has the same structure as the depression 8A of the filter plate 8 shown in FIG. 1 and the like, and the depression 212B has the same structure as the depression 8B of the filter plate 8 shown in FIG. It has the same structure. As shown in FIG. 20, the first pressing portion 214A has the same structure as the first pressing portion 8C of the filter plate portion 8 shown in FIG. 1 and the like, and the first pressing portion 214B has the same structure as the filter plate portion shown in FIG. 8 has the same structure as the first pressing portion 8D. As shown in FIG. 20, the first opposed portion 222A has the same structure as the first opposed portion 8E of the filter plate portion 8 shown in FIG. 1 and the like, and the first opposed portion 222B has the first opposed portion of the filter plate portion 8. It has the same structure as the part 8F. As shown in FIG. 20, the first seal portion 224A has the same structure as the annular convex portion 24 (first seal portion 8G) of the filter plate portion 8 shown in FIG. 1 and the like, and the first seal portion 224B has the structure shown in FIG. And the like, and has the same structure as the annular convex portion 24 of the filter plate portion 8 and the first seal portion 224A. As shown in FIG. 20, each of the drainage plate side projections 219A and 219B has the same structure as each of the drainage plate side projections 19A and 19B in the filter plate 8 shown in FIG. As shown in FIG. 20, each of the annular plate portions 215A and 215B has the same structure as each of the annular plate portions 15A and 15B in the filter plate portion 8 shown in FIG. As shown in FIG. 20, each of the through-hole-side protrusions 217A and 217B has the same structure as each of the through-hole-side protrusions 17A and 17B of the filter plate 8 shown in FIG. As shown in FIG. 20, the hole 216 has the same structure as the hole 16 in the filter plate 8 shown in FIG. As shown in FIG. 20, each of the drain plates 213A and 213B has the same structure as each of the drain plates 13A and 13B in the filter plate portion 8 shown in FIG. As shown in FIG. 20, the drainage channels 228A and 228B have the same configuration as the drainage channels 28A and 28B in the filter plate portion 8 shown in FIG. The overhang portions 241 and 242 shown in FIG. 22 and the like are portions having the same configuration as the overhang portions 41 and 42 shown in FIG. 17 and the like, and the overhang portions 241 and 242 are simply shown in FIG. ing.

  As shown in FIG. 20, the filter plate structure 203 of the second embodiment is different from the filter plate 208 which is disposed so as to face the filter plate 208 and has a plate-like substrate 211. A contact portion 209 configured as a frame-shaped portion of any kind and having a housing space therein, and when the contact portion 209 is in the contact state in the contact position, the filter plate portion 208 and the contact portion 209 allow the filter chamber 240 ( FIGS. 21 and 28) show a filter plate structure. The contact portion 209 is formed of a frame having a penetrating opening (accommodating portion 242), and the relative position with respect to the filter plate 208 is displaced from the contact position (FIG. 21) where the filter plate 208 is in close contact with the filter plate 208. It is configured to switch to the open position (FIG. 20).

  As shown in FIG. 20, FIG. 21, FIG. 23, and FIG. 25, the substrate unit 211 has depressions 212A and 212B, first pressing parts 214A and 214B, and a hole 216. The concave portion 212A is a concave portion that constitutes a part of the filter chamber 240 when in a close contact state as shown in FIG. 21, and is on the close contact portion 209 side (specifically, on the side of the concave portion 212A facing the substrate portion 211). It is formed on the outer surface of the contact portion 209 side). The concave portion 212B is also a concave portion that constitutes a part of the filter chamber 240 when in the close contact state as shown in FIG. 28, and is on the close contact portion 209 side (specifically, on the side of the substrate portion 211 facing the concave portion 212B). It is formed on the outer surface of the contact portion 209 side). The first pressing portion 214A is a portion disposed on the outer surface of the substrate portion 211 on the side of the contact portion 209 (specifically, on the side of the contact portion 209 facing the recess 212A) so as to surround the recess 212A. . The first pressing portion 214A is a portion disposed around the recess 212B on the outer surface of the substrate portion 211 on the side of the contact portion 209 (specifically, on the side of the contact portion 209 facing the recess 212B). . The hole portion 216 is a through hole formed in the thickness direction of the substrate portion 211 so as to penetrate the substrate portion 211, and serves as a flow path that passes through the inside of the substrate portion 211 and continues to the concave portions 212 </ b> A and 212 </ b> B. Part.

  As shown in FIG. 23, the first pressing portion 214A is disposed around the recess 212A, and the first opposing portion 222A whose surface faces the second pressing portion side in the close contact state, and the first pressing portion 214A is around the recess 212A. A first seal portion 224A that is disposed and protrudes from the surface of the first facing portion 222A. The surface of the first facing portion 222A is a flat surface along a plane direction orthogonal to the thickness direction of the substrate portion 211, and the first seal portion 224A is configured to protrude from the surface of the first facing portion 222A. It is an annular protrusion arranged in an annular and rib-like manner so as to surround the recess 212A. The recessed portion 212A is a portion that is configured to be recessed so as to be recessed in the thickness direction from the surface of the first opposing portion 222A.

  As shown in FIG. 25, the first pressing portion 214B is disposed around the recess 212B, and the first opposing portion 222B whose surface faces the second pressing portion 244A side when in a close contact state, and the periphery of the recess 212B. And a first seal portion 224B protruding from the surface of the first facing portion 222B. The surface of the first facing portion 222B is a flat surface along a plane direction orthogonal to the thickness direction of the substrate portion 211, and the first seal portion 224B is configured to protrude from the surface of the first facing portion 222B. It is an annular projection that is annularly arranged in a rib shape so as to surround the recess 212B. The recessed portion 212B is a portion that is recessed so as to be recessed in the thickness direction from the surface of the first opposing portion 222B.

  As described above, the recessed portions 212A and 212B and the first pressing portions 214A and 214B are formed on both sides in the thickness direction of the substrate portion 211, and the recessed portions 212A and 212B are respectively formed in the first pressing portions 214A and 214B. Each of the first facing portions 222A and 222B and each of the first sealing portions 224A and 224B are arranged so as to surround them.

  The above-mentioned filter cloth 218 has the same configuration as the filter cloth 18 of the filter plate portion 8 shown in FIG. Specifically, the filter cloth 218 has the same configuration as the filter cloth 18A of the filter plate section 8 shown in FIG. 1 and the like, and has the same configuration as the filter cloth 18B of the filter plate section 8 shown in FIG. And a filter cloth 218B forming the structure. As shown in FIG. 22, the filter cloth 218A covers the substrate 211 so as to straddle the depression 212A and the first seal part 224A. As shown in FIG. The configuration is such that the substrate portion 211 is covered so as to straddle the one seal portion 224B. More specifically, the depression 212A and the first pressing portion 214A are disposed so as to cover the entire region outside the annular plate portion 215A in the depression 212A and to cover the entire first pressing portion 214A. ing. In FIG. 21, the filter cloth 218 is omitted.

  The contact portion 209 includes a housing portion 242 formed in a hole shape, and second pressing portions 244A and 244B respectively pressing the first pressing portions 214B and 214A when in a contact state, and is configured as a plate-shaped frame. Have been. The accommodating portion 242 is configured as an opening (hole) penetrating in the thickness direction of the contact portion 209 (frame), and together with the recesses 212A and 212B in the close contact state as shown in FIG. Is configured.

  As shown in FIG. 26, the second pressing portion 244A is a portion disposed so as to surround the accommodation portion 242 on one side in the thickness direction of the contact portion 209, and the first pressing portion 244A is in the contact state as shown in FIG. It is a part that presses 214B. The second pressing portion 244A is arranged around the accommodation portion 242, and is provided around a second opposing portion 252A whose surface faces the first pressing portion 214B side in a close contact state as shown in FIG. A second seal portion 234A that is disposed, is concave from the surface of the second facing portion 252A, and presses the first seal portion 224B when in a close contact state. The surface of the second opposed portion 252A is a flat surface along a plane direction orthogonal to the thickness direction of the contact portion 209, and the second seal portion 234A is configured to be recessed from the surface of the second opposed portion 252A. An annular concave portion (annular groove portion) arranged in a groove shape so as to surround the portion 242.

  As shown in FIG. 27, the second pressing portion 244B is a portion disposed so as to surround the housing portion 242 on the other side in the thickness direction of the contact portion 209. When the contact portion 209 is in the contact state as shown in FIG. It is a part that presses 214A. The second pressing portion 244B is disposed around the accommodation portion 242, and in a close contact state as shown in FIG. 21, a second facing portion 252B having a surface facing the first pressing portion 214A side, and a periphery of the accommodation portion 242. A second seal portion 234B that is disposed, is concave from the surface of the second facing portion 252B, and presses against the first seal portion 224A when in a close contact state. The surface of the second opposing portion 252B is a flat surface along a plane direction orthogonal to the thickness direction of the contact portion 209, and the second seal portion 234B is configured to be recessed from the surface of the second opposing portion 252B. An annular concave portion (annular groove portion) arranged in a groove shape so as to surround the portion 242.

  In this manner, the second pressing portions 244A and 244B are formed on both sides in the thickness direction of the contact portion 209 (frame body), and the second pressing portions 244A and 244B surround the housing portion 242 in each of the second pressing portions 244A and 244B. Each of the opposed portions 252A and 252B and each of the second seal portions 234A and 234B are arranged.

  Further, the contact portion 209 includes a plurality of bridge portions 260. The bridging portion 260 is formed in a linear shape or a bar shape, and has both ends fixed in a form of being bridged so as to straddle the opening region of the housing portion 242 (opening portion). The erection part 260 can be constituted by, for example, a piano wire, a wire, a metal bar, or the like.

  The close contact portion 209 is also provided with overhang portions 271 and 272 similar to the overhang portions 241 and 242 described above.

  In the filter plate structure 203 configured as described above, the elements constituting the element group 205 can be approached or separated by the same device as in the first embodiment. Then, in a set of adjacent elements in the element group 205 (that is, a set of the adjacent filter plate 208 and the contact portion 209), the first seal portion is configured as a convex portion, and the second seal portion is configured as a concave portion, When the filter plate portion 8 and the close contact portion 9 are in close contact with each other, the convex portion presses the inner surface of the concave portion in each set of elements.

  Specifically, in each “set of elements” in which the first pressing portion 214A and the second pressing portion 244B press against each other, the first seal portion 224A is configured as a convex portion, and the second seal portion 234B is configured as a concave portion. The first seal portion 224A (convex portion) presses the inner surface of the second seal portion 234B (concave portion) in each "set of elements" in the close contact state. More specifically, when the filter cloth 218 is sandwiched between the first seal part 224A (convex part) and the second seal part 234B (concave part) in the close contact state, the first seal part 224A ( The convex portion presses the inner surface of the second seal portion 234B (recess) while entering the second seal portion 234B (recess). Further, in the “element set”, in the above-mentioned close contact state, the filter cloth 218 is interposed between the surface of the first opposing portion 222A and the surface of the second opposing portion 252B, and the first opposing portion 222A is filtered. The second opposing portion 252B is pressed with the cloth 218 interposed therebetween.

  Similarly, in each of the “element set” in which the first pressing portion 214B and the second pressing portion 244A press against each other, the first seal portion 224B is configured as a convex portion, and the second seal portion 234A is configured as a concave portion. In the close contact state, the first seal portion 224B (convex portion) presses the inner surface of the second seal portion 234A (concave portion) in each “set of elements”. More specifically, when the filter cloth 218 is sandwiched between the first seal portion 224B (convex portion) and the second seal portion 234A (concave portion) in the close contact state, the first seal portion 224B ( The convex portion presses the inner surface of the second seal portion 234A (concave portion) while entering the second seal portion 234A (concave portion). Furthermore, in the “set of elements”, in the above-mentioned close contact state, the filter cloth 218 is interposed between the surface of the first facing part 222B and the surface of the second facing part 252A, and the first facing part 222B is filtered. The second opposing portion 252A is pressed with the cloth 218 interposed therebetween.

  The holding device 50 shown in FIG. 29 has the same configuration as that of the first embodiment, and the filter plate 208 is in close contact with the filter plate 208 so that the convex portion of the first seal portion and the second seal portion presses the inner surface of the concave portion. The filter plate 208 and the contact portion 209 can be held in an overlapping state where the filter plate 209 and the filter 209 overlap. Specifically, in each “set of elements”, a plurality of filter plate portions 208 and a plurality of close contact portions 209 (frames) are formed such that the convex portion of the first seal portion and the second seal portion presses the inner surface of the concave portion. The plurality of filter plate portions 208 and the plurality of close contact portions 209 (frames) are held in an overlapping state in which the body members are overlapped.

  The first injection device 60 (injection device) has the same configuration as that of the first embodiment, and the holding device 50 holds the filter plate portion 208 and the contact portion 209 in an overlapping state as shown in FIGS. 28 and 29. At this time, the solid-liquid mixture 7 is injected into the recesses 212 </ b> A and 212 </ b> B and the housing 242 through the hole 216. Specifically, when the holding device 50 holds the plurality of filter plate portions 208 and the plurality of close contact portions 209 (frames) in an overlapping state, the first injecting device 60 has a depression of each set of elements. The solid-liquid mixture 7 is injected into the sections 212A and 212B and into the storage section 242.

  The holding device 50 functions as an approaching device and a separating device, and separates the filter plate 208 from the contact portion 209 as shown in FIG. 20 and the filter plate 208 and the contact portion 209 as shown in FIG. This is a device that can be changed to a state of being in close contact. After the first injection device 60 (injection device) injects the solid-liquid mixture 7 as shown in FIG. 28, the holding device 50 functioning as a separating device connects the filter plate portion 208 and the contact portion 209 as shown in FIG. Separate. Specifically, the filter plate portions 208 adjacent to both sides of each contact portion 209 (frame) are separated from each contact portion 209 (frame).

  Further, the holding device 50 functions as an example of the tilting device. In a state where the separating device separates the filter plate portion 208 and the contact portion 209 as shown in FIG. 209 is inclined more than in the close contact state. Thereby, cake can be discharged well. In FIG. 31, the second seal portion is omitted.

  As shown in FIG. 32, the cleaning device 280 includes a water discharge unit 282 having a water discharge port (a plurality of holes) for discharging the wash water, a water supply device 284 for flowing the wash water into the water discharge port of the water discharge unit 282. , A moving device 286 for moving the water discharge section 282.

  When the holding device 50 (separating device) is in a separated state in which the filter plate portions 208 adjacent to both sides of the contact portion 209 (frame) are separated from one of the contact portions 209 (frame), As shown in FIG. 32, the water discharge section 282 is moved (moved up and down) between the filter plates 208 on both sides in the separated state. Specifically, when the inclining device is in a predetermined inclined state in which the contact portion 209 is inclined as shown in FIG. 32, the moving device 286 allows the cleaning water discharged from the water outlet to pass through the inside of the housing portion 242 (opening). The water discharge section 282 is moved to a position where the water discharge section 282 passes through and hits the filter plate section 208. More specifically, the moving device 286 moves at least a part of the water discharging portion 282 into the housing portion 242 (opening) when the tilting device tilts the contact portion 209.

  As described above, the cleaning device 280 applies the cleaning water to the separated filter plates 208 on both sides by the water discharge unit positioned between the separated filter plates 208 on both sides.

<Modification 1 of Second Embodiment>
As shown in FIG. 34, the contact portion 209 (frame) has an end fixed to the inner edge side of the housing portion 242 (opening) and the other end extending linearly or in a rod shape toward the inside of the opening. It may have an installation part.

<Modification 2 of Second Embodiment>
As shown in FIG. 35, the close contact portion 209 (frame) has one end fixed to the inner edge side of the housing portion 242 (opening) and the other end extending linearly or rod-like toward the inside of the opening. An installation part 262 and an installation part 260 similar to the second embodiment may be provided.

<Third embodiment>
36 to 38 illustrate a filter plate structure 303 according to the third embodiment.
The filter plate structure 303 of the third embodiment is different from the filter plate structure 203 of the second embodiment in that the filter plate 208 is changed to the filter plate 8 and the contact portion 209 is changed to the contact portion 309. . The filter plate structure 303 is a filter plate structure used in a double filter press device. The filter press device having the filter plate structure 303 is the same as the filter press device 201 of the second embodiment except that the filter plate structure 203 is changed to the filter plate structure 303.

  The filter plate structure 303 includes a plurality of filter plate portions 8, a filter plate portion group including each filter plate portion 308 as an element, a plurality of close contact portions 309 (frames), and each of the close contact portions 309 (frames). And a frame group having a body as an element. In the element group, the elements (filter plate section 8) constituting the filter plate section group and the elements (close contact section 309) constituting the frame body group are alternately arranged. Although FIGS. 36 to 38 show only two elements of the filter plate group, actually, many elements (filter plate portions 8) having the same structure are arranged. Although only one element (the close contact portion 309) of the frame group is shown, many elements having the same structure are actually arranged.

  Each filter plate portion 8 has the same structure as the filter plate portion 8 in the filter plate structure 3 of the first embodiment. Therefore, in the following description, for the filter plate portion 8 constituting the filter plate structure 303, the same parts as those of the filter plate portion 8 shown in FIG. Detailed description is omitted.

  The filter plate structure 303 includes a filter plate portion 8 having a plate-like substrate portion 11, and a close contact portion that is arranged to face the filter plate portion 8 and that is configured as a frame of a different type from the filter plate portion 8. 309. The contact portion 309 is configured so that the relative position with respect to the filter plate portion 8 is switched between a contact position where the filter plate portion 8 is in close contact with the filter plate portion 8 (FIG. 37) and an open position displaced from the filter plate portion 8 (FIGS. 36 and 38). None, the accommodation space is configured inside. In the filter plate structure 303, as shown in FIG. 37, the filter chamber 340 is configured by the filter plate portion 8 and the close contact portion 309 when the close contact portion 309 is in the close contact position at the close contact position.

  The filter plate portion 8 has the same configuration as the filter plate portion 8 of the first embodiment. The substrate section 11 includes a central concave portion 12A (dent portion) and a pressing portion 14A (first pressing portion). The central concave portion 12A (dent portion) is formed so as to be concave in the thickness direction of the substrate portion 11 on the outer surface portion of the substrate portion 11 on the side of the contact portion 309, and forms a part of the filtration chamber 340 as shown in FIG. I do. The pressing portion 14A (first pressing portion) is arranged on the outer surface of the substrate portion 11 on the side of the contact portion 309 so as to surround the central concave portion 12A (recess portion), and as shown in FIG. Press 309. The hole portion 16 is a through-hole that passes through the inside of the substrate portion 11 and serves as a flow path leading to the central concave portion 12A (dent portion). Similarly, the substrate unit 11 includes a central concave portion 12B (dent portion) and a pressing portion 14B (first pressing portion). The central concave portion 12B (dent portion) is formed so as to be recessed in the thickness direction of the substrate portion 11 on the outer surface portion of the substrate portion 11 on the side of the contact portion 309, and constitutes a part of the filtration chamber. The pressing portion 14B (first pressing portion) is arranged on the outer surface of the substrate portion 11 on the side of the close contact portion 309 so as to surround the central concave portion 12B (dent portion), and presses the close contact portion 309 when in a close contact state. The hole portion 16 is a through-hole that passes through the inside of the substrate portion 11 and serves as a flow path leading to the central concave portion 12A (dent portion).

  The contact portion 309 is formed of a frame having a penetrating opening (through hole), and the opening serves as a housing portion 342. The accommodating portion 342 is formed in a hole shape, and constitutes a filtration chamber 340 together with the central concave portions 12A and 12B (hollow portion) when in a close contact state. Further, the contact portion 309 has second pressing portions 344A and 344B. The second pressing portion 344A is arranged so as to surround the housing portion 342, and presses the pressing portion 14B (first pressing portion) when in a close contact state as shown in FIG. The second pressing portion 344B is arranged so as to surround the housing portion 342, and presses the pressing portion 14A (first pressing portion) when in a close contact state as shown in FIG.

  The first pressing portion 14A is arranged around the central concave portion 12A (dent portion), and has an opposing portion 22A (first opposing portion) whose surface faces the second pressing portion 344B side in a close contact state, and a central side. An annular convex portion 24 (first seal portion) is provided around the concave portion 12A (dent portion) and protrudes from the surface of the facing portion 22A (first facing portion). The first pressing portion 14B is disposed around the central concave portion 12B (dent portion), and the opposed portion 22B (first opposed portion) whose surface faces the second pressing portion 344A side in a close contact state, and the central pressing portion 14B. An annular concave portion 34 (first seal portion) that is arranged around the concave portion 12B (the concave portion) and that is concave from the surface of the opposing portion 22B (first opposing portion).

  The second pressing portion 344A is arranged around the housing portion 342, and is arranged around the second facing portion 352A whose surface faces the first pressing portion 14B side in the close contact state, and around the housing portion 342, A second seal portion 334A (annular convex portion) which is convex from the surface of the facing portion 352A and presses against the annular concave portion 34 (first seal portion) when in a close contact state. The second pressing portion 344B is disposed around the accommodation portion 342, and is disposed around the second opposing portion 352B whose surface faces the first pressing portion 14A side in a close contact state, and around the accommodation portion 342. A second seal portion 334B (annular concave portion) that is concave from the surface of the facing portion 352B and presses against the annular convex portion 24 (first seal portion) when in a close contact state.

  In the configuration of FIGS. 36 to 38, in the first seal portion and the second seal portion that press against each other in the close contact state, one of the seal portions is convex toward the other seal portion side in the close contact state. It has a convex portion arranged to surround the filter chamber, and the other seal portion has a concave portion arranged to surround the filter chamber while being recessed on the opposite side to the one seal portion when in a close contact state. In the state of close contact, the convex portion and the covering portion covering the convex portion enter the concave portion and press the inner surface of the concave portion.

  For example, in the annular convex portion 24 (first seal portion) and the second seal portion 334B which press each other in the close contact state, the annular convex portion 24 (first seal portion) as one of the seal portions is in the close contact state. Sometimes it has a convex part which is convex on the other seal part side (second seal part 334B side) and is arranged so as to surround the filter chamber 340. Then, the second seal portion 334B, which is the other seal portion, has a concave portion which is recessed to the opposite side to the one seal portion (the annular convex portion 24) when in the close contact state and is arranged so as to surround the filtration chamber 340. . In the close contact state, the annular convex portion 24 (first seal portion) and the covering portion (filter cloth 18) covering the annular convex portion 24 (first seal portion) enter the concave portion (second seal portion 334B). Presses the inner surface of the concave portion (second seal portion 334B).

  Further, in the annular concave portion 34 (first seal portion) and the second seal portion 334A which press against each other in the close contact state, when the second seal portion 334A which is one of the seal portions is in the close contact state, the other seal portion It has a convex portion (the annular concave portion 34 side) that is convex and is disposed so as to surround the filter chamber 340. The annular concave portion 34 (first seal portion), which is the other seal portion, is recessed to the opposite side to the one seal portion (second seal portion 334A) when in the close contact state, and is arranged so as to surround the filtration chamber 340. Having a concave portion. Then, in the close contact state, the convex portion (the second seal portion 334A) enters the concave portion (the annular concave portion 34 as the first seal portion) and presses the inner surface of the concave portion (the annular concave portion 34).

<Other embodiments>
The present invention is not limited to the embodiments described above with reference to the drawings and drawings. For example, the following examples are also included in the technical scope of the present invention. In addition, the features of the above-described embodiments and the features of the embodiments described below can be combined in various ways without contradiction.

  In the first embodiment, an example in which one annular convex portion 24 is provided on one surface side and one annular concave portion 34 is provided on the other surface side has been described, but two or more (for example, two ) May be provided in a multiplex manner, and a plurality of (for example, two) annular recesses 34 corresponding to the annular protrusions 24 may be provided in a multiplex manner on the other surface side.

  In the above-described embodiment, the outer shape of the cross section of the protruding portion of the annular convex portion 24 (the cross section cut in a plane direction orthogonal to the direction in which the annular convex portion 24 extends) has a curved shape. May have a trapezoidal shape, a triangular shape, or other shapes. Similarly, the outer shape of the cross section of the recessed portion in the annular concave portion 34 (the cross section cut in a plane direction perpendicular to the direction in which the annular concave portion 34 extends) has a curved shape. The shape may be triangular or other shapes.

  In the above-described embodiment, the annular convex portion 24 and the annular concave portion 34 are provided in a rectangular frame shape around the center side concave portion 12. However, if the annular convex portion 24 and the annular concave portion 34 are arranged around the concave portion, 34 may be a circular shape (a structure arranged in a circular shape along a plane direction orthogonal to the thickness direction of the filter plate), an elliptical shape, or another shape. .

  In the above-described embodiment, an example is described in which the pressing portion is arranged annularly close to the periphery of the recessed portion, but is not limited to such an example. For example, the pressing portion may be annularly arranged at a position outside the recessed portion and away from the recessed portion.

  In the above-described embodiment, the filter plate 10 having a rectangular (square) outer edge is exemplified. However, the outer edge of the filter plate may be circular, elliptical, substantially rectangular, or the like. Alternatively, other shapes may be used. When the outer edge of the filter plate is formed in a circular shape, the first pressing portion may be formed in a circular frame shape along the periphery of the filter plate. Further, the first pressing portion only needs to be on the peripheral side from the recessed portion, and for example, may have a configuration in which the first pressing portion is slightly inside the peripheral edge of the filter plate. The recessed portion may be configured to be concave in the plate thickness direction on the center side of the filter plate, and the outer edge shape is not limited to a rectangular shape, and may be another shape such as a circular shape, an elliptical shape, or a substantially rectangular shape. Good. The first pressing portion only needs to be provided at a portion protruding in the plate thickness direction on the peripheral side of the filter plate, and the inner edge shape (the inner edge shape of the frame) of the first pressing portion is circular, elliptical, substantially Various shapes such as a rectangular shape can be adopted. Similarly, various shapes such as a circular shape, an elliptical shape, and a substantially rectangular shape can be adopted as the outer edge shape of the first pressing portion (the outer edge shape of the frame).

1,201,301: Filter press device 3, 203, 303: Filter plate structure of filter press device 7: Solid-liquid mixture 8, 208: Filter plate portion 8A, 8B, 212A, 212B: Depressed portion 8C, 8D, 214A , 214B ... first pressing parts 8E, 8F, 222A, 222B ... first opposing parts 8G, 8H, 224A, 224B ... first seal parts 9, 209 ... close contact parts 9A, 9B, 242 ... accommodation parts 9C, 9D, 244A. , 244B, 344A, 344B ... second pressing parts 9E, 9F, 252A, 252B, 352A, 352B ... second opposing parts 9G, 9H, 234A, 234B, 334A, 334B ... second seal parts 11, 211 ... substrate part 16 , 216: hole 18, 218: filter cloth 60: first injection device (injection device)
205 element group 206 filter plate group 207 frame group 260 erecting part 262 extending part 270 driving device (holding device, separating device, tilting device)
280 cleaning device 282 water discharge unit 284 water supply device 286 moving device

Claims (12)

A filter plate having a plate-like substrate,
The filter plate portion is arranged opposite to the filter plate portion and is configured as a plate-shaped portion or a frame-shaped portion different from the filter plate portion, and a relative position with respect to the filter plate portion is a close contact position in which the filter plate portion is in close contact with the filter plate portion. The contact portion is configured to be switched to an open position displaced from the filter plate portion, and an accommodation space is configured therein,
With
The filter plate structure of a filter press device in which a filter chamber is configured by the filter plate portion and the close contact portion when the close contact portion is in a close contact state at the close contact position,
The substrate unit,
A depression formed on the outer surface of the substrate portion on the contact portion side, and constituting at least a part of the filtration chamber,
A first pressing portion that is arranged to surround the recessed portion on the outer surface portion of the substrate portion on the contact portion side, and presses the contact portion in the contact state;
A hole serving as a flow path leading to the depression in a configuration passing through the inside of the substrate portion,
Has,
The contact portion,
An accommodating portion that is configured in a hole or a concave shape, and configures the filtering chamber together with the recessed portion when in the close contact state,
A second pressing portion disposed around the housing portion and pressing the first pressing portion in the close contact state;
Has,
The first pressing portion,
A first facing portion that is arranged around the recessed portion and has a surface facing the second pressing portion side in the close contact state;
A first seal portion disposed around the recessed portion and convex or concave from the surface of the first facing portion;
With
The second pressing portion,
A second opposing portion that is arranged around the housing portion and has a surface facing the first pressing portion side in the close contact state;
A second seal portion disposed around the accommodation portion, concave or convex from the surface of the second facing portion, and pressing against the first seal portion in the close contact state;
With
In the first seal portion and the second seal portion pressed against each other in the close contact state, one of the seal portions is convex toward the other seal portion side in the close contact state and surrounds the filtration chamber. The other sealing portion has a concave portion which is recessed on the opposite side to the one sealing portion when in the close contact state and is arranged so as to surround the filtration chamber. In the close contact state, the filter plate structure of the filter press device, wherein the convex portion or a covering portion covering the convex portion enters the concave portion and presses the inner surface of the concave portion. A plate-like substrate portion, and a filter cloth covering the substrate portion,
The filter plate is disposed to face the filter plate, and the relative position with respect to the filter plate is configured to be switched between a close contact position that is in close contact with the filter plate and an open position that is displaced from the filter plate. A configured contact portion,
With
The filter plate structure of a filter press device in which a filter chamber is configured by the filter plate portion and the close contact portion when the close contact portion is in a close contact state at the close contact position,
The substrate unit,
A depression formed on the outer surface of the substrate portion on the contact portion side, and constituting at least a part of the filtration chamber,
A first pressing portion that is arranged to surround the recessed portion on the outer surface portion of the substrate portion on the contact portion side, and presses the contact portion in the contact state;
A hole serving as a flow path leading to the depression in a configuration passing through the inside of the substrate portion,
Has,
The filter cloth is disposed so as to cover at least the inner surface of the depression,
The contact portion,
An accommodating portion that is configured in a hole or a concave shape, and configures the filtering chamber together with the recessed portion when in the close contact state,
A second pressing portion disposed around the housing portion and pressing the first pressing portion in the close contact state;
Has,
The first pressing portion,
A first facing portion that is arranged around the recessed portion and has a surface facing the second pressing portion side in the close contact state;
A first seal portion disposed around the recessed portion and convex or concave from the surface of the first facing portion;
With
The second pressing portion,
A second opposing portion that is arranged around the housing portion and has a surface facing the first pressing portion side in the close contact state;
A second seal portion disposed around the accommodation portion, concave or convex from the surface of the second facing portion, and pressing against the first seal portion in the close contact state;
With
In the first seal portion and the second seal portion pressed against each other in the close contact state, one of the seal portions is convex toward the other seal portion side in the close contact state and surrounds the filtration chamber. The other sealing portion has a concave portion which is recessed on the opposite side to the one sealing portion when in the close contact state and is arranged so as to surround the filtration chamber. In the close contact state, the filter plate structure of the filter press device, wherein the convex portion or a covering portion covering the convex portion enters the concave portion and presses the inner surface of the concave portion. The filter plate portion has a filter cloth,
The filter cloth is configured to cover the substrate so as to straddle the depression and the first seal,
The said convex part presses the inner surface of the said recessed part, in the state of the said filter cloth being pinched between the said convex part and the said recessed part in the said contact state, entering the said recessed part. 3. A filter plate structure of the filter press device according to 2. The contact portion is formed of a frame having a penetrating opening,
The filter plate structure of the filter press device according to any one of claims 1 to 3, wherein the opening is the storage portion. The filter of the filter press device according to claim 4, wherein the frame body has a bridging portion that is configured in a linear shape or a rod shape and that is fixed at both ends in a form spanned across the opening area of the opening. Board structure. The said frame body has an extension part whose one end is fixed to the inner edge part side of the said opening part, and the other end side extends in the inside of the said opening part linearly or in the shape of a rod. Filter plate structure of filter press equipment. An element comprising a plurality of the filter plate portions and a filter plate portion group having each of the filter plate portions as an element, and an element having a plurality of the frame members and a frame group having each of the frame members as an element. Including groups,
In the element group, elements constituting the filter plate group and elements constituting the frame body group are alternately arranged.
The substrate portion has the dent portion and the first pressing portion formed on both sides in its thickness direction, and each of the first opposing portions and the first pressing portion surround each of the dent portions in each of the first pressing portions. Each said first seal portion is arranged;
The frame has the second pressing portions formed on both sides in the thickness direction of the frame itself, and each of the second opposing portions and each of the second seals surround the accommodating portion in each of the second pressing portions. Department is arranged,
In a set of adjacent elements in the element group, one of the first seal portion and the second seal portion is configured as the convex portion, the other is configured as the concave portion, and each of the first seal portion and the second seal portion is configured as the concave portion. The filter plate structure of the filter press device according to any one of claims 4 to 6, wherein the convex portion presses an inner surface of the concave portion in the set of the elements.   A filter press device having a filter plate structure of the filter press device according to any one of claims 1 to 7. A holding device that holds the filter plate portion and the contact portion in an overlapping state in which the filter plate portion and the contact portion are overlapped so that the protrusion presses the inner surface of the concave portion,
When the holding device holds the filter plate portion and the close contact portion in the overlapping state, an injection device that injects the solid-liquid mixture into the recessed portion and the accommodation portion through the hole portion,
After the injection device injects the solid-liquid mixture, a separation device that separates the filter plate portion and the close contact portion,
In a state where the separation device separates the filter plate portion and the close contact portion, a tilt device that tilts the close contact portion more than in the close contact state,
The filter press device according to claim 8, comprising: A water discharge unit having a water discharge port that discharges the wash water, a water supply device that pours the wash water into the water discharge port of the water discharge unit, and a moving device that moves the water discharge unit, including a cleaning device,
The moving device is configured such that, when the inclining device is in a predetermined inclined state in which the close contact portion is inclined, the flush water discharged from the water discharge port passes through the inside of the close contact portion and hits the filter plate portion at the position where the water discharge portion is located The filter press device according to claim 9, further comprising: The filter press device according to claim 10, wherein the moving device moves at least a part of the water discharge section into the close contact portion when the tilt device tilts the close contact portion. A filter plate structure of the filter press device according to claim 7,
In each set of the elements, a plurality of the filter plate portions and a plurality of the frame members in an overlapping state in which a plurality of the filter plate portions and a plurality of the frame members are overlapped so that the protrusion presses the inner surface of the concave portion. A holding device for holding the
When the holding device holds the plurality of filter plate portions and the plurality of frame bodies in the overlapping state, the solid-liquid mixture is injected into the recessed portion and the accommodation portion of each of the element sets. An injection device,
After the injection device injects the solid-liquid mixture, from each of the frames, a separation device that separates the filter plate portions adjacent to both sides of each of the frames,
A water discharge unit having a water discharge port that discharges the wash water, a water supply device that pours the wash water into the water discharge port of the water discharge unit, and a moving device that moves the water discharge unit;
Including
The moving device is configured such that, when the separating device is in a separated state in which the filter plate portions adjacent to both sides of the frame body are separated from any of the frame members, the filter plate portions on both sides in the separated state. Move the water discharge section between,
A filter press device configured to apply the washing water to the filter plate portions on both sides in the separated state by the water discharging portion positioned between the filter plate portions on both sides in the separated state. .

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