JPH1119412A - Slurry feed path structure of filter press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily contact washing water with the whole slurry introducing hole to increase washing effect. SOLUTION: Relating to both slurry distributing grooves 33 adjacent to both dividing surfaces 34 of a filtrate chamber on both sides of a slurry introducing hole 28, both slurry guiding edges 35a successive to both the dividing surfaces 34 and an upper side 28a of the slurry introducing hole 28 are set at the same height H so as to be successive almost linearly and smoothly. As a result, in the case that washing water in each filter body rises in a filtrate chamber and a filter chamber from both filtrate outlets and reaches the slurry introducing hole 28 from each slurry distributing groove 33, when washing water in the filter chamber flows in the slurry introducing hole 28 in order from that on the lowermost side of each slurry distributing groove 33, the levels in the filter chamber and the slurry introducing hole 29 gradually rise almost at the same height. When the washing water flows in both the slurry distributing grooves 33 on the uppermost side and the levels rise to the slurry guiding edges 35a of both the slurry distributing grooves 33, at the same time, the level rises to the upper side 28 of the slurry introducing hole 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a slurry supply passage in a filter press for separating slurry discharged in civil engineering work into dewatered cake and drainage water.

[0002]

2. Description of the Related Art In a conventional filter press shown in FIG. 1 (also used in the following embodiment drawings), a plurality of filters 7, 8, 9 are provided between a fixed holding plate 2 and a movable holding plate 5 by a movable holding plate 5. Are arranged side by side so as to be able to move back and forth along the relative movement direction. 9A, FIG. 10A and FIG. 11 show the filter body 7 that comes into contact with the fixed holding plate 2 among the filter bodies 7, 8, and 9.
As shown in FIG. 1A, a filter plate 10 and a filter frame 12 for holding a filter cloth 11 on one side of the filter plate 10 are provided. As shown in FIGS. 9 (b), 10 (a) and 11 (a), the filter body 8 of the respective filter bodies 7, 8, 9 which comes into contact with the movable holding plate 5 A filter frame 15 for holding a filter cloth 14 on one side of the filter plate 13 is provided. Each filter 7,
As shown in FIGS. 9 (c), 10 (b) and 11 (a), each filter body 9 located between the two filter bodies 7 and 8 among the filter bodies 8 and 9 A filter frame 18 is provided on both front and rear sides of the filter plate 16 to hold a filter cloth 17 therebetween.

[0003] The side surfaces of the filter plates 10, 13, 16 and the filter cloth 1
A drainage chamber 23 is provided between the drainage chambers 1, 14 and 17.
Both drain outlets 25 are formed at the bottom of the drain chamber 23. In each of the filter bodies 7, 8, and 9, both drainage outlets 25 communicate with both drainage discharge holes 26. A slurry introduction hole 28 is formed in the ceiling of each of the filter bodies 7, 8, and 9, and a plurality of slurry distribution grooves 33 extending radially from the slurry introduction hole 28 and communicating with the filtration space 31 are provided. I have.

As shown in FIG. 1, in a state where the filter bodies 7, 8, 9 are pressed between the sandwiching plates 2, 5, the filter cloths 11, 14, 17 are provided between the filter bodies 7, 8, 9 respectively. When the slurry is press-fitted from each slurry introduction hole 28 into the filtration space 31 surrounded by the filter bodies 7, 8, 9, the filtration space 31 is formed.
The water inside passes through both filter cloths 11, 14 and 17, and drains into the filtration chamber 23.
And the dewatered cake remaining in each filtration space 31 is discharged along with the separation of each of the filter bodies 7, 8, and 9.

[0005]

However, FIG.
As shown in FIG. 2B, both slurry distribution grooves 33 adjacent to the two partition surfaces 34 of the filtration space 31 on both sides of the slurry introduction hole 28, and the two slurry guide edges 35a continuous with the two partition surfaces 34 are formed. And the upper side 28 a of the slurry introduction hole 28 are continuous with each other via a stepped portion K. The upper side 28a of the slurry introduction hole 28 is cut into an arc by a notch h larger than the height H of the stepped portion K to form a concave shape. For this reason, in each of the filter bodies 7, 8, and 9, when the washing water rises from both the drainage outlets 25 to the drainage chamber 23 and the filtration space 31 to reach the slurry introduction grooves 28 from the respective slurry distribution grooves 33, the following drawbacks occur. Having.

When the washing water in the filtration space 31 flows into the slurry introduction hole 28 sequentially from the bottom one of the slurry distribution grooves 33, the water levels in the filtration space 31 and the slurry introduction hole 28 gradually rise at substantially the same height. I do. Wash water flows into the uppermost slurry distribution passages 33, and the water level rises to the slurry guide edges 35a of the slurry distribution grooves 33. However, as described above, the upper side 28 of the slurry introduction hole 28
Since a is cut deeper above the height H of the step K, the step K becomes an obstacle and the water level becomes lower than the step K.
, And it is difficult for cleaning water to sufficiently reach the upper side 28a of the slurry introduction hole 28, and the cleaning effect is reduced.

SUMMARY OF THE INVENTION It is an object of the present invention to enhance the cleaning effect by making cleaning water easily contact the whole of the slurry introduction hole.

[0008]

The present invention will be described with reference to the reference numerals in the drawings (FIGS. 1 to 8) of the following embodiments. Claim 1
Alternatively, the filter press according to the invention of claim 2 is configured as follows.

A plurality of filter bodies (7, 8, 9) are juxtaposed between the two boards (2, 5) which are relatively movable in the front-rear direction so as to be able to move back and forth along the relative movement direction. I have. Double filter cloth (11,1) between each filter (7,8,9)
4, 17) are provided. Both filter cloths (11, 1) are interposed between the filter bodies (7, 8, 9) pressed against each other between the two panels (2, 5).
The filter chamber (3) surrounded by both filter cloths (11, 14, 17) between the respective filter bodies (7, 8, 9) while sandwiching the filter bodies (4, 17).
6) is formed. When the slurry is press-fitted from the slurry pressure inlet (37) leading to each of the filtration chambers (36), the water in each of the filtration chambers (36) is removed from both filter cloths (11, 14, 17).
Through the filtration water outlet (25), and remove the dehydrated cake remaining in each filtration chamber (36) through each filtration body (7, 8,
It is designed to be discharged with the separation of 9).

In each of the filter bodies (7, 8, 9),
A slurry introduction hole (28) communicating with the slurry pressure inlet (37) in a state of being pressed against each other is provided in the ceiling of the filtration chamber (36), and the slurry introduction hole (28) is provided.
And a plurality of slurry distribution passages (33) extending radially from and communicating with the filtration chamber (36).

In each of the slurry distribution passages (33),
Slurry introduction holes (28) are formed on both partition surfaces (34) provided on the ceiling in the filtration chamber (36) on both left and right directions perpendicular to the relative movement direction of each filter body (7, 8, 9). According to the first aspect of the present invention, both the slurry guide edges (35a) are provided in the two slurry distribution passages (33) adjacent on both sides, and are connected to the two partition surfaces (34).
a) The upper side (28) of the slurry introduction hole (28) provided between
a) are smoothly and substantially continuously formed in a straight line.

Also, the two slurry distribution passages (33)
According to the invention of claim 2, the two partition surfaces (34)
The two slurry guide edges (35a) continuous with the slurry introduction holes (2a) provided between the two slurry guide edges (35a).
8) With respect to the upper side (28a), the height is set to be substantially the same (H).

According to a third aspect of the present invention, the following configuration is added to the first or second aspect of the invention. Each of the filter bodies (7, 8, 9) includes a filter plate (10, 13, 16) and a filter cloth (11, 14, 1) for the filter plate (10, 13, 16).
7) and a filter frame (12, 15, 18). Each of the filter chambers (36) is provided with both filter cloths (1) in a state where both filter frames (12, 15, 18) adjacent to each other are pressed against each other.
1, 14, 17). Each of the slurry introduction holes (28) is provided with a filter plate (1) of each filter body (7, 8, 9).
0, 13, 16) and the filter frames (12, 15, 18), respectively, and are superimposed on each other in a state where the respective filter bodies (7, 8, 9) are pressed against each other. Each of the slurry distribution passages (33)
And two partition surfaces (3) provided on the ceiling in the filtration chamber (36).
4) and the upper side (28a) of the slurry introduction hole (28) are both provided in each filter frame (12, 15, 18).

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A filter press according to an embodiment of the present invention will be described below with reference to FIGS.

<Outline of Filter Press> FIGS. 1 (also used as a conventional drawing) and FIG. 2 show a part of the filter press. A fixed holding plate 2 and a fixed supporting plate 3 are mounted on both front and rear sides of a base 1. Side rails 4 are provided on both left and right sides between the two boards 2 and 3.
Has been erected. The movable holding plate 5 is supported by both side rails 4 between the two plates 2 and 3, and is moved in the front-rear direction to and away from the fixed holding plate 2 by a piston rod 6 a of a hydraulic cylinder 6 attached to the fixed support plate 3. It can move along both side rails 4. The plurality of movable filter bodies 7, 8, 9 are arranged in parallel on both side rails 4 between the two holding plates 2, 5, and can be moved back and forth along both side rails 4 in the moving direction of the movable holding plate 5. ing.

As shown in FIGS. 3 (a) and 4 and 6, the filter body 7 of the filter bodies 7, 8, 9 which comes into contact with the fixed holding plate 2 Filter cloth 11 for one side
And a filter frame 12 for holding the filter frame. Each filter 7, 8,
9, the filter body 8 that comes into contact with the movable holding plate 5 is shown in FIG.
As shown in FIG. 4B and FIGS. 4 and 6, a filter plate 13 and a filter frame 15 for holding a filter cloth 14 on one side of the filter plate 13 are provided. Of the filter bodies 7, 8, 9, both the filter bodies 7,
Each of the filter bodies 9 located between 8 is shown in FIG.
As shown in FIG. 1, a filter plate 16 and a filter frame 18 for holding a filter cloth 17 on both front and rear sides of the filter plate 16 are provided.

<The filter 7 shown in FIG. 3A and FIGS. 4 and 6> * The filter plate 10 One of the front and rear sides of the filter plate 10 which is in contact with the fixed holding plate 2 is formed flat. I have. On one side of the filter plate 10 on which the filter frame 12 is superimposed, an annular partition portion 20 is formed on the outer periphery thereof, leaving a superimposed surface 19, and a concave portion 21 is formed inside the partition portion 20. A large number of projections 22 are formed in the recess 21. The filter cloth 11 is applied to face the recess 21, and the outer periphery of the filter cloth 11 is along the partition 20. Each projection 22 in the concave portion 21 is
1, a drainage chamber 23 is formed between the filter cloth 11 and the recess 21. The filter cloth 11 is screwed at a part of each projection 22.

A flow path surface 24 is formed in the partition 20 at the bottom of the drainage chamber 23. In the recess 21, drainage outlets 25 continuous with the flow path surface 24 are formed on both sides in the left-right direction orthogonal to the relative movement direction of the respective filter bodies 7, 8, 9. The bottom space in the concave portion 21 above the flow path surface 24 communicates with the two drainage outlets 25.

On the left and right sides of the bottom of the filter plate 10 outside the partition 20, drainage drain holes 26 extend through the front and rear sides of the filter plate 10. The two drainage holes 26 communicate with the two drainage outlets 25 through a passage 27 in the filter plate 10.

At the center of the ceiling of the filter plate 10 outside the partition 20, a slurry introduction hole 28 is provided to penetrate the filter plate 10 on both front and rear sides. * Filter frame 12 An annular partition portion 30 is formed around the outer periphery of both front and rear sides of the filter frame 12, leaving a superposed surface 29, and a filtration space 31 is formed inside the partition portion 30. A flow path surface 32 is formed in the partition 30 at the bottom in the filtration space 31.

Drainage drain holes 26 are provided on the left and right sides of the bottom of the filter frame 12 outside the partitioning section 30 so as to extend through the front and rear sides of the filter frame 12. At the center of the ceiling of the filter frame 12 outside the partition 30, slurry introduction holes 28 extend through both front and rear sides of the filter frame 12. A plurality of slurry distribution grooves 33 (slurry distribution passages) extend radially from the slurry introduction hole 28 on one side of the filter frame 12 and on the outer periphery of the slurry introduction hole
1.

* Connection between the filter plate 10 and the filter frame 12 The partition portion 20 of the filter frame 12 is
So that the filter cloth 11 can be
Of the filter plate 10 and the overlapped surface 19
The filter frame 12 is screwed to the filter plate 10 in a state where the polymerization surface 29 of the filter frame 12 is polymerized. The drainage discharge hole 26 of the filter plate 10 and the drainage discharge hole 26 of the filter frame 12, the slurry introduction hole 28 of the filter plate 10, and the slurry introduction hole 28 of the filter frame 12 are respectively superposed and communicate with each other. The drainage chamber 23
Communicates with the filtration space 31 via the filter cloth 11.

<The filter body 8 shown in FIG. 3B and FIGS. 4 and 6> * Filter plate 13 One of the front and rear sides of the filter plate 13 which is formed in a flat shape contacts the movable holding plate 5. Except for the above, it is the same as the filter plate 10 of the filter body 7.

* The filter frame 15 is the filter frame 1 of the filter body 7.
Same as 2. * The coupling state between the filter plate 13 and the filter frame 15 is the same as the coupling state between the filter plate 10 and the filter frame 12 in the filter 7.

<Each filter 9 shown in FIG. 3 (c) and FIGS. 5 and 6> * Filter plate 16 The filter plate 10 of the filter 7 has one of the front and rear sides which is in contact with the fixed holding plate 2. Is formed in a flat shape, and the filter plate 16 of each filter body 9 has the same structure on one side where the filter frame 12 is superimposed on the filter plate 10 of the filter body 7 on both front and rear sides, except for the following. It has a simple structure. Therefore, the same reference numerals as those of the filter plate 10
6 is replaced with the description. However, both drainage outlets 25 are connected to the filter plate 16
Are penetrated at both front and rear sides and communicate with each other.

The two filter frames 18 are the same as the filter frame 12 of the filter 7. * The state of the connection between the filter plate 16 and the two filter frames 18 is as follows.
Except that the filter frame 18 is polymerized on both front and rear sides of the filter 6, the connection state of the filter plate 10 and the filter frame 12 in the filter body 7 is the same as that of FIG.

<Characteristic structure of the slurry distribution groove 33>
As shown in FIG. 6, FIG. 7 (a) and FIG.
2, 15, and 18 partition portions 30 have slanted partition surfaces 34 on both left and right sides of the slurry introduction hole 28. Of the slurry distribution grooves 33, the left and right partition surfaces 34 are located on both left and right slurry distribution grooves 33 adjacent to the left and right sides of the slurry introduction hole 28, and the slanted slurry guide surfaces 35 are formed on the two partition surfaces 34. It is continuous. This left and right slurry guide surface 3
5, the guide edge 3 on the bottom side of the slurry distribution groove 33.
5a is set at substantially the same height H with respect to the upper side 28a of the slurry introduction hole 28 provided between the two slurry guide surfaces 35. In other words, the guide edges 35a of the two slurry guide surfaces 35 and the upper side 28a of the slurry introduction hole 28 smoothly and smoothly continue almost linearly. More precisely,
The upper side 28a of the slurry introduction hole 28 is cut into an arc shape by a slight cut h above the guide edge 35a which forms a horizontal line to form a concave shape.

<A state in which the respective filter bodies 7, 8, 9 are pressed against the holding plates 2, 5> The piston rod 6 of the hydraulic cylinder 6
When a moves forward and the movable holding plate 5 moves toward the fixed holding plate 2, the respective filter bodies 7, 8, 9 are pressed against each other between the holding plates 2, 5 as shown in FIG. In this pressed state,
Double filter cloths 11, 1 provided between each filter 7, 8, 9
The filter chambers 4, 17 are also pressed and held together with the respective filter bodies 7, 8, 9, and the filtration chamber 36 surrounded by both filter cloths 11, 14, 17 in the filter spaces 31 of the filter bodies 7, 8, 9 adjacent to each other. Is formed. In each of the filter bodies 7, 8, and 9,
The slurry introduction holes 28 overlap and communicate with each other, and the slurry distribution grooves 33 adjacent to each other overlap and communicate with the filtration chamber 36. In each of the filter bodies 7, 8, and 9, the drainage holes 26 thereof are superimposed and communicate with each other, and the filtration chamber 36 is formed of the filter cloths 11, 14, and 1.
7, the drainage chamber 23, the drainage outlet 25, and the passage 27 communicate with the drainage discharge hole 26.

<Effect of Separating Slurry into Dewatered Cake and Filtration Water> As shown in FIG. 2, slurry is supplied from a slurry pressure inlet 37 provided in the fixed holding plate 2 so that each of the filter bodies 7, 8, 9 When the slurry is pressed into the slurry introduction hole 28, the slurry in each of the filter bodies 7, 8, 9 becomes
3 is pressed into the filtration chamber 36. The water in each filtration chamber 36 is discharged to the filtration chamber 23 through both filter cloths 11, 14, and 17, and further discharged to the filtration drain hole 26 through the filtration outlet 25 and the passage 27. The drainage collected in each drainage outlet 26 is discharged from a drainage outlet 38 provided in the fixed holding plate 2.

Although not shown, when the piston rod 6a of the hydraulic cylinder 6 retreats and the movable holding plate 5 separates from the fixed holding plate 2, the filter bodies 7, 8, and 9 are sequentially separated from each other and remain in each of the filtration chambers 36. The dehydrated cake falls from between the respective filtration bodies 7, 8, 9 and is discharged.

The washing water supply port 39 provided on the movable holding board 5 is closed. <Washing Action of Filters 7, 8, 9> As described above, in a state where the filters 7, 8, 9 are pressed by the sandwiching plates 2, 5, the slurry pressure inlet 37 and the drainage outlet 38 are It is closed. When the washing water is supplied from the washing water supply port 39 and supplied to each of the filtration water discharge holes 26 of each of the filtering bodies 7, 8, and 9, the cleaning water passes through each of the filtration bodies 7, 8, and 9 through the passage 27. It is injected into the drainage chamber 23 through the drainage outlet 25. Further, the washing water is injected into the filtration chamber 36 through both the filter cloths 11, 14 and 17, and is injected into the slurry introduction hole 28 through the slurry distribution groove 33. Thereafter, each of the filters 7, 8, 9
The washing water whose inside has been washed is discharged from the washing water supply port 39.

<Characteristics of the present embodiment>
(Other than the other technical ideas described below). A pair of slurry guide edges 35a which are located on both sides of the slurry introduction hole 28 and which are adjacent to the two partition surfaces 34 of the filtration chamber 36 and which are continuous with the two partition surfaces 34;
The upper side 28a of the slurry introduction hole 28 has substantially the same height H
, So that they are smoothly and substantially continuously formed in a straight line. Therefore, as described in the above-described washing operation of each of the filtering bodies 7, 8, and 9, the washing water rises from both the drainage outlets 25 to the drainage chambers 23 and 36, and the respective slurry distribution grooves 33.
When the slurry reaches the slurry introduction hole 28, the following effects are obtained.

When the washing water of the filtration chamber 36 flows into the slurry introduction hole 28 sequentially from the bottom one of the slurry distribution grooves 33, the water levels of the filtration chamber 36 and the slurry introduction hole 28 gradually rise at substantially the same height. I do. The cleaning water flows into the uppermost slurry distribution grooves 33, and the two slurry distribution grooves 33
When the water level rises to the slurry guide edge 35a, the water level rises to the upper side 28a of the slurry introduction hole 28 at the same time. Therefore, the cleaning water easily contacts the entire slurry introduction hole 28, and the cleaning effect can be enhanced.

[Other Embodiments] In addition to the above-described embodiments, the present invention may be configured as shown by * below. * As shown in FIG. 7A, the upper side 28a of the slurry introduction hole 28 is not cut in the shape of an arc by the cut h,
As shown in FIG. 7 (b), the upper side 28a and the two slurry guide edges 35a are made to be flush with each other.

[Other technical ideas] The technical ideas (other than the claims) that can be grasped from each embodiment are described together with the effects.
According to the following inventions (a) to (c), the washing water can easily come into contact with the entire slurry introduction hole 28, and the washing effect can be enhanced.

(A) In claim 1, both partition surfaces 34
Are connected to the upper side 28 of the slurry introduction hole 28 provided between the two slurry guide edges 35a.
The height H is set to be substantially the same as a.

(B) In any one of claims 1 to 3 or (a), the upper side 28a of the slurry introduction hole 28 is slightly cut above the two slurry guide edges 35a. I have.

(C) In any one of claims 1 to 3 or (a), the upper side 28a of the slurry introduction hole 28 and the two slurry guide edges 35a are
They are flush with each other.

[0039]

According to the slurry supply passage structure of the filter press according to the present invention, the slurry distribution passage (33) communicating the slurry introduction hole (28) and the filtration chamber (36) is improved. The cleaning water can easily contact the entirety of (28), and the cleaning effect can be enhanced.

[Brief description of the drawings]

FIG. 1 is a partial schematic front view of a filter press according to the present embodiment.

FIG. 2 is a partial schematic front view of FIG. 1 in which only each filter body is sectioned.

FIG. 3 is a cross-sectional view showing the entirety of each filter.

FIG. 4 is a partially cutaway side view showing the entire filter plate used as one component of the filter body shown in FIGS. 3 (a) and 3 (b).

FIG. 5 is a partially cutaway side view showing the entirety of a filter plate used as one component of the filter shown in FIG. 3 (c).

FIG. 6 is a partially cutaway side view showing the entire filter frame used as one component of the filter shown in FIGS. 3 (a), 3 (b) and 3 (c).

FIG. 7A is a partially enlarged side view of FIG. 6,
(B) is a partial enlarged side view showing another embodiment.

8 (a) is a partially enlarged sectional view of FIG. 3 (a), FIG. 8 (b) is a partially enlarged sectional view of FIG. 3 (b),
FIG. 3C is a partially enlarged cross-sectional view of FIG.

FIG. 9 is a cross-sectional view showing the entire conventional filter body.

10 (a) is a partially cutaway side view showing the entire filter plate used as a part of the filter shown in FIGS. 9 (a) and 9 (b), and FIG. FIG. 2 is a partially cutaway side view showing the entire filter plate used as one component of the filter shown in FIG.

11A is a side view showing an entire filter frame used as one component of the filter shown in FIGS. 9A, 9B, and 9C, and FIG. 11B is a part of FIG. It is an enlarged side view.

[Explanation of symbols]

2 ... fixed holding plate, 5 ... movable holding plate, 7, 8, 9 ... filter body, 10, 13, 16 ... filter plate, 11, 14, 17 ... filter cloth, 12, 15, 18 ... filter frame, 25 ... Drainage outlet, 28 ...
Slurry introduction hole, 28a ... upper side of slurry introduction hole, 33 ...
Slurry distribution groove (slurry distribution passage), 34 ... partition surface,
35a: Slurry guide edge, 36: Filtration chamber, 37: Slurry pressure inlet.

Claims (3)

[Claims] A plurality of filter bodies (7, 8, 9) are provided between two panels (2, 5) which are relatively movable in the front-rear direction, approaching and separating from each other.
Are arranged side by side so as to be able to move back and forth along the relative movement direction, and a double filter cloth (1) is provided between the respective filter bodies (7, 8, 9).
1, 14, 17), and both filter cloths (11, 1) are interposed between the respective filter bodies (7, 8, 9) pressed against each other between the two panels (2, 5).
The filter chamber (3) surrounded by both filter cloths (11, 14, 17) between the respective filter bodies (7, 8, 9) while sandwiching the filter bodies (4, 17).
6) is formed, and when the slurry is injected from the slurry pressure inlet (37) leading to each filtration chamber (36), the water in each filtration chamber (36) is filtered through both filter cloths (11, 14, 17). The dewatered cake discharged from the water outlet (25) and remaining in each filtration chamber (36) is filtered into each of the filter bodies (7, 8, 9).
In each of the filter bodies (7, 8, 9), a slurry introduction hole (28) communicating with a slurry pressure inlet (37) while being pressed against each other is provided. And a plurality of slurry distribution passages (33) extending radially from the slurry introduction hole (28) and communicating with the filtration chamber (36). Of (33), slurry is applied to both partition surfaces (34) provided on the ceiling in the filtration chamber (36) on both sides in the right and left direction perpendicular to the relative movement direction of each filter (7, 8, 9). In the two slurry distribution passages (33) adjacent on both sides of the introduction hole (28), between the two slurry guide edges (35a) continuous with the two partition surfaces (34), and between the two slurry guide edges (35a). Introduced slurry Slurry supply path structure of a filter press and the upper side (28a), characterized in that smoothly is continuously substantially straight line (28). 2. A plurality of filter bodies (7, 8, 9) between both boards (2, 5) which are relatively movable in the front-back direction approaching and separating from each other.
Are arranged side by side so as to be able to move back and forth along the relative movement direction, and a double filter cloth (1) is provided between the respective filter bodies (7, 8, 9).
1, 14, 17), and both filter cloths (11, 1) are interposed between the respective filter bodies (7, 8, 9) pressed against each other between the two panels (2, 5).
The filter chamber (3) surrounded by both filter cloths (11, 14, 17) between the respective filter bodies (7, 8, 9) while sandwiching the filter bodies (4, 17).
6) is formed, and when the slurry is injected from the slurry pressure inlet (37) leading to each filtration chamber (36), the water in each filtration chamber (36) is filtered through both filter cloths (11, 14, 17). The dewatered cake discharged from the water outlet (25) and remaining in each filtration chamber (36) is filtered into each of the filter bodies (7, 8, 9).
In each of the filter bodies (7, 8, 9), a slurry introduction hole (28) communicating with a slurry pressure inlet (37) while being pressed against each other is provided. And a plurality of slurry distribution passages (33) extending radially from the slurry introduction hole (28) and communicating with the filtration chamber (36). Of (33), slurry is applied to both partition surfaces (34) provided on the ceiling in the filtration chamber (36) on both sides in the right and left direction perpendicular to the relative movement direction of each filter (7, 8, 9). In the two slurry distribution passages (33) adjacent on both sides of the introduction hole (28), the two slurry guide edges (35a) continuous with the two partition surfaces (34) are located between the two slurry guide edges (35a). Introduced slurry To the upper side (28a) of (28), the slurry supply passage structure of a filter press, characterized in that it is set to substantially the same height (H). 3. The filter body (7, 8, 9) includes a filter plate (10, 13, 16) and the filter plate (10, 13, 1).
6), a filter frame (12, 15, 18) for holding a filter cloth (11, 14, 17) therebetween, and each of the filtration chambers (36) is provided with two filter frames (1) adjacent to each other.
2, 15 and 18) are pressed against each other and both filter cloths (11,
14, 17), and each of the slurry introduction holes (28) is provided with a respective filter (7, 8,
9) Filter plate (10, 13, 16) and filter frame (12, 1)
5, 18), and each filter (7, 8,
9), the slurry distribution passages (33), the two partition surfaces (34) provided on the ceiling in the filtration chamber (36), and the upper side (28a) of the slurry introduction hole (28). ) Means each filter frame (1
The slurry supply path structure of a filter press according to claim 1 or 2, wherein the slurry supply path structure is provided in (2, 15, 18).