JPH0751506A - Dehydration frame in filter press, and squeezing plate composed of dehydration frame thereof - Google Patents

Abstract

PURPOSE:To prevent a filter and a squeezing membrane from being damaged inside the peripheral of a dehydration frame by providing an expansion part having a tilting face freely attachably and detachably on both sides of the dehydration frame and to stabilize the filtrating and squeezing work by making the tilting face have a prescribed necessary width. CONSTITUTION:An expansion part 12 is put on both sides of a hollow frame body 11. While the inside tilting face 18 of the expansion part 16 on one side is applied to the other tilting face 14 of the hollow frame body 11 and the inside tilting face 19 of the expansion part 17 on the other side is applied to the tilting face 14 of the other side of the hollow frame body 11, both expansion parts 16, 17 are put on the hollow frame body 11. Uneven parts for joining are formed in faces of the expansion parts 16, 17 on both sides wherein the faces are to be put together in the hollow space and the uneven parts are made to be fitted each other. Expansion parts 12, 16, 17 having several different types of tilting angles or width of the surfaces (tilting faces) 20, 22 are previously prepared and among them, proper ones with prescribed sizes are selected at the time of use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow frame body in a filter press, and more particularly to a hollow frame body in which the width of an inclined surface inside a frame of the hollow frame body can be adjusted.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 15 and 16, an inclined surface portion 3 provided inside a frame 2 of a hollow frame body 1 of a filter press.
Has a wedge-shaped cross-section protruding inward from the both sides of the frame 2. Further, a large radius is attached to the center 5 protruding like a wedge. The hollow frame 1 has a frame 2 in which a filter medium 6 or a squeeze membrane 7 hung on the hollow frame band 1 is closely adhered to form a filter chamber between the hollow frame 1 and a filter medium or a squeeze membrane hung on an adjacent frame. It is possible. Further, by supporting the filter medium 6 or the compressed film 7 on the inclined surface 3 of the frame body 1, even if the filter medium 6 or the compressed film 7 makes a complicated motion in the hollow, damages such as cracks or tears may occur. Try not to occur. The squeeze film 7 is attached to the outside of the hollow frame body 1 by passing bolt nuts 9 for attachment on the upper and lower edges thereof.

[0003]

However, in order to sufficiently support the filter medium 6 or the squeeze membrane 7 against a predetermined filtering pressure or squeezing pressure, the width dimension of the inclined surface 3 may be insufficient, If the filtration work is continued as it is, the filter medium 6 or the compressed film 7
May be broken at the inclined surface. Also, frame 2
There is a possibility that the filter medium 6 or the squeeze membrane 7 may be damaged at the place 8 where the filter medium 6 moves from the inside to the inclined surface 3.

If the width of the inclined surface 3 of the frame is insufficient, the filter medium 6 or the compressed film 7 may be inadvertently fluttered inside the hollow, and the filter medium 6 or the compressed film 7 may be damaged. Further, if the filter medium or the squeezing membrane flaps inside the hollow, it becomes difficult to form a cake having a constant thickness in each filtration chamber. Therefore, when the above problem occurs, the frame body 1 in use must be replaced with one in which the inclined surface 3 is formed wide.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art by making the inclined surface of a predetermined required width even in a ready-made hollow frame having a certain size. This is to enable stable filtration work.

According to the present invention, there is provided a dehydrating frame body in a filter press having an inclined surface in which the thickness decreases from the inside of the frame on both sides of the hollow frame toward the inside of the hollow, and the inclination is provided from above the inclined surface. A dewatering frame in a filter press, which comprises detachable members on both sides of the dewatering frame body, each of which is provided with an expansion member having an inclined surface that expands beyond the surface toward the inside of the hollow. Further, according to the present invention, in the above-described configuration, the concavo-convex portions may be formed on the sides that enter the hollow inside of the expansion members on both sides and are aligned with each other, and the concavo-convex portions may be fitted to each other. Further, in the present invention, the expansion members on both sides may be fastened with a fastening tool so as to be detachable.

Further, according to the present invention, each of the expanding members on both sides may be formed with a clamping surface parallel to the frame, which is clamped together with the frame of the hollow frame.
Further, the present invention relates to a dehydrating frame body in a filter press having an inclined surface in which the thickness decreases from the inside of the frame on both sides of the hollow frame toward the inside of the hollow, and the inclined surface is formed on the inclined surface. An expansion member having an inclined surface that expands further inward toward the hollow is detachably provided on both sides of the frame for dehydration, and compression membranes hung on both sides of the frame are expanded from the frame. It is a pressing plate in a filter press configured to be supported along an inclined surface of a member.

[0008]

According to the above-mentioned structure of the present invention, the filter medium or the compressed film can be sufficiently supported along the inclined surface.
Little damage to the filter media or squeeze membrane during filtration or squeezing. Further, since the filter medium or the compressed film is supported broadly by the inclined surface, it is possible to prevent the filter medium or the compressed film from repeating complicated motions such as fluttering in the hollow. As a result, there is almost no wrinkling or tearing of the filter medium or the compressed film.

Further, by inserting the expansion members on both sides of the hollow frame, the dehydration frame of the present invention has no possibility of advancing the filtration while the filtering medium or the squeezing membrane is biased to one side in the hollow. Further, by using the dehydration frame of the present invention, a cake having a constant thickness can be produced and taken out for each filtration chamber. Further, the expansion member can be easily removed from the frame.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. The dehydration frame 10 of FIG. 1 is roughly composed of a hollow frame body 11 and inclined surface expansion members 12 fitted on both sides thereof.
The hollow frame 11 has a hollow portion 1 from inside the frame 13 on both sides thereof.
5 has an inclined surface 14 that is inclined inwardly with decreasing thickness. 2 is an enlarged view of the center of the upper portion of FIG. The expansion members 12 are fitted on both sides of the hollow frame 11. The inner inclined surface 18 of the expansion member 16 on one side is brought into contact with the inclined surface 14 on one side of the hollow frame body 11, and the inner inclined surface 19 of the expansion member 17 on the other side is opposed to the inclined surface 14 on the other side of the frame body 11. Apply both expansion members 16 and 17 to the hollow frame 11
Inset. Concavities and convexities for engagement are formed on the surfaces of the expansion members 16 and 17 on both sides to be mated in the hollow portion 5, and the concavities and convexities fit into each other.

That is, the details of the expansion members 16 and 17 will be described in detail with reference to FIGS. 3 to 6. Figure 3
FIG. 4 shows the front surface 20 side of the expansion member 16 on one side, and FIG. 4 shows the rear surface 21 side of the expansion member 16. 5 shows the front surface 22 side of the other expansion member 17, and FIG. 6 shows the back surface 23 side of the same expansion member 17. In FIGS. 3 and 4, reference numerals 24, 25, 26, 27, 28, and 29 indicate one of the above-mentioned engaging convex portions, and reference numeral 3
The place indicated by 0, 31, 32, 33, 34, 35 is the other concave portion. Further, the respective back surfaces of the convex portions 24 to 29 in FIG. 4 enter the concave portions 42 to 47 of the corresponding expansion member 17 (FIG. 5) on the other side to become flush with the respective top surfaces of the convex portions 36 to 41, A part of the surface 22 of the expansion member 17 on the other side is formed.

Further, in FIGS. 5 and 6, reference numerals 36 and 3 are used.
7, 38, 39, 40 and 41 are the other convex portions for engagement described above, and reference numerals 42, 43, 44 and 4
One of the concave portions is indicated by 5,46,47. Further, the respective back surfaces of the convex portions 36 to 41 of FIG. 6 are respectively corresponding to the concave portions 30 to 3 of the expansion member 16 (FIG. 3) on one side.
5 to form a part of the surface 20 of the expansion member 16 on one side so as to be flush with the top surfaces of the protrusions 24 to 29. In addition, in FIG. 2, the inner inclined surfaces 18, 18 of the expansion members 12, 16, 17 are attached to the tips 48 of the inclined surfaces 14 on both sides of the hollow frame 11.
The lower ends 49 and 50 of 19 are in close contact with each other.

The expansion members 12, 16 and 17 are
Several kinds of surfaces 20 and 22 (inclined surfaces) having different inclination angles or widths are prepared in advance, and one having a predetermined dimension for use is selected from these. The material of the expansion member is preferably polypropylene resin or the like in terms of moldability and chemical resistance, but may be metal or wood. Further, the expansion member according to the present invention is not limited to the shape shown in the figure, and may be composed of a divided body obtained by appropriately dividing this.

The dehydration frame 60 shown in FIG. 7 is generally composed of a hollow frame body 11 and inclined surface expansion members 61 fitted on both sides thereof. The hollow frame 11 used is the one used in the above example. 8 is an enlarged view of the upper center of FIG. The expansion members 61 are fitted on both sides of the hollow frame 11. On the outer circumference of the expansion member 62 on one side and the outer circumference of the expansion member 63 on the other side, tightening surfaces 64, 65 parallel to the frame 13 to be tightened together with the frame 13 of the hollow frame 11 are formed, respectively. In FIG. 8, for the sake of explanation, the tightening surface 64,
Although 65 is separated from the frame 13 of the hollow frame body 11, the tightening surfaces 64 and 65 connect both expansion members 62 and 63 to the hollow frame body 11.
When fitted in, it becomes flush with the frame 13.

Further, on the surfaces where the expansion members 62 and 63 on both sides are fitted in the hollow portion 15, the unevenness 24, 25, 27 and 28, the recesses 30,
32, 33, 35 (FIGS. 9, 10) and the convex portions 36, 38, 39, 41 of the expansion member 63 on the other side, and the concave portions 42, 43,
45 and 46 (FIGS. 11 and 12) are attached so that these irregularities fit into each other.

The expansion members 12, 16, 1 in each of the above examples
The concave and convex portions for engagement of 7 and 61, 62, 63 are not necessarily required. In addition, the expansion members 12, 16 of the present invention,
17 and 61, 62, 63 may be fixed by fitting them from both sides of the hollow frame 11, or may be fixed from both sides by using appropriate fixing tools such as bolts and nuts.

FIG. 13 shows an example of the pressing plate 70. The compression plate 70 is roughly composed of a hollow frame 71, an inclined expansion member 72 fitted on both sides thereof, and a compression film 73 covering both sides thereof. Reference numeral 74 is an expansion member fitted into one side of the hollow frame body 71, and 75 is an expansion member fitted into the other side of the hollow frame body 71. 76 is a frame of the hollow frame 71, and 77 is a hollow frame 71.
The reference numeral 78 denotes a hollow portion of the hollow frame 71. Also,
Reference numeral 79 indicates an inclined surface of the expansion members 74 and 75.

Further, the squeeze film 73 has a stock solution hole 8 in the central portion.
0, and the squeeze membranes on both sides are connected at the periphery of the stock solution hole 80. Reference numeral 81 is a filter cloth hung on the squeezing membranes 73 on both sides.
Reference numeral 82 denotes a filtrate discharge hole penetrating the compressed film 73, and 83
Is a guide groove for guiding the filtrate from the filtration bed of the squeeze membrane 73 to the filtrate discharge hole 82. Further, reference numeral 84 is a communication passage, which passes through the inside of the frame 76 of the hollow frame 71 and leads to the filtrate collection hole 85 on the side of the hollow frame 71. Further, 86 is a bolt nut for connecting the squeeze films 73 on both sides and fixing them to the hollow frame 71. Further, 87 is a compressed fluid supply pipe, 88 is an opening of the pipe 87, and a hollow frame 71
And the inclined surface 79 of the expansion member 74 penetrating the expansion member 74.
To open.

The dehydration frame 10 described with reference to FIGS.
As usual, they are arranged in a filter press and covered with filter cloths on both sides thereof, and the stock solution is supplied to a filtration chamber formed between adjacent filter plates for filtration. The filter cloth is the surface 2 of the expansion members 16 and 17 which incline from the frame 13 of the hollow frame 11 to the inside of the hollow portion 15.
Support along 0,22.

That is, the expansion members 16 and 17 extend their surfaces 20 and 22 further inward of the hollow portion 15 with respect to the inclined surface 14 of the hollow frame 11 to support the filter cloth. The filter 22 is supported by inclining the inclination of 22 more gently toward the inside of the hollow portion with respect to the inclination of the inclined surface 14 of the hollow frame 11. Therefore, the filter cloth does not flutter in the hollow portion 15 and is not biased to one side.

The dehydration frame 10 may be constructed by arranging the hollow frame bodies 11 in a filter press and then fitting the hollow frame bodies 11 into the hollow frame body 11. If the hollow frame 11 is covered with a filter cloth, the filter cloth can be easily removed and fitted. Further, the expansion members 12, 16 and 17 can be replaced with several kinds having different inclination angles or widths of the surfaces 20 and 22 (inclined surfaces) according to filtration.

When the back surface of the expansion member 16 on one side (FIG. 4) and the back surface of the expansion member 17 on the other side (FIG. 6) are fitted to both sides of the hollow frame body 11 and fitted, the convex portions 24 to 29 are recessed.
2 to 47, and the concave portions 30 to 35 and the convex portions 36 to 41, respectively. 3 and 5
Are the surfaces on both sides of the dehydration frame 10 in FIG. 1, respectively.

Further, the dehydration frame 60 described with reference to FIGS. 7 to 12 has a tightening surface 64 formed on the outer periphery of the expansion members on both sides.
65 is applied to the frame 13 of the hollow frame 11 together with the frame 13 of the hollow frame 11 and tightened. The dehydration frame 60 is arranged in a filter press as in the above example to perform filtration.

When the expansion members 62 and 63 on both sides are fitted into the hollow frame 11, the back surface of the expansion member 62 (FIG. 10) and the back surface of the expansion member 63 (FIG. 12) are placed on both sides of the hollow frame body 11. And fit it on. The protrusion 24 of the expansion member 62 on one side,
25, 27 and 28 are recesses 42 of the expansion member 63 on the other side,
The recesses 30, 32, 33, 35 of the expansion member 62 on one side and the projections 36, 38, 39, 41 of the expansion member 63 on the other side are fitted in the corresponding portions 43, 45, 46, respectively. 9 and 11 show the surfaces on both sides of the dehydration frame 60 of FIG. 7, respectively.

The squeezing plates 70 of FIGS. 13 and 14 are arranged in a filter press in the usual manner and filter cloths 8 are provided on both sides of each squeezing plate 70.
The product is multiplied by 1 and the stock solution is supplied to the filtration chamber formed between the filter plate and the adjacent filter plate to perform filtration compression. The expansion members 74 and 75 constituting the compression plate 70 described above further extend a surface 79 thereof inward of the hollow portion 78 with respect to the inclined surface 77 of the hollow frame 71 to support the compression film 73, and The squeeze surface 73 is inclined more gently toward the inside of the hollow portion 78 with respect to the sloping surface of the sloping surface 77 of the hollow frame 71 to support the compressed film 73.

[Brief description of drawings]

FIG. 1 is a front view of a dehydration frame.

FIG. 2 is a central cross-sectional view of the upper part of FIG.

FIG. 3 is a front view of an expansion member that is fitted to one side of the dehydration frame.

4 is a rear view of the expansion member of FIG.

FIG. 5 is a front view of an expansion member fitted to the other side of the dehydration frame.

6 is a rear view of the expansion member of FIG.

FIG. 7 is a front view of a dehydration frame of another example.

FIG. 8 is a central cross-sectional view of the upper portion of FIG.

FIG. 9 is a front view of an expansion member fitted to one side of another dehydration frame.

10 is a rear view of the expansion member of FIG.

FIG. 11 is a front view of an expansion member that is fitted to the other side of another dehydration frame.

12 is a rear view of the expansion member of FIG.

FIG. 13 is a front view of a compression plate.

14 is a central vertical cross-sectional view of FIG.

FIG. 15 is a front view showing a conventional dehydration frame with a part thereof cut away.

16 is a vertical cross-sectional view of the upper center of FIG.

[Explanation of symbols]

1: hollow frame, 2: frame, 3: inclined surface, 4: hollow part,
5: protruding center, 6; filter cloth, 7; squeezing membrane, 8; moving from inside frame to inclined surface, 9; squeezing membrane connector, 1
0; dehydration frame, 11; hollow frame, 12; expansion member, 13;
Frame, 14; inclined surface, 15; hollow portion, 16; expansion member on one side, 17; expansion member on the other side, 18, 19; inner inclined surface, 20; surface of expansion member on one side, 21; one side Rear surface of the expansion member, 22; front surface of the other expansion member, 2
3; Back surface of the expansion member on the other side, 24, 25, 26, 2
7, 28, 29; convex part, 30, 31, 32, 33, 3
4, 35; recesses, 36, 37, 38, 39, 40, 4
1; convex part, 42, 43, 44, 45, 46, 47; concave part, 48; tip of inclined surface, 49, 50; lower end part of inclined surface, 60; dehydration frame, 61; expansion member, 62; one side Expansion member, 63; expansion member on the other side, 64, 65; tightening surface, 70; squeeze plate, 71; hollow frame body, 72; expansion member,
73; squeeze film, 74; expansion member on one side, 75; expansion member on the other side, 76; frame, 77; inclined surface, 78; hollow portion, 79; inclined surface of expansion member, 80; undiluted liquid hole, 81; Filter cloth, 82; through-hole of compressed film, 83; guide groove, 84; communication hole, 85; collection hole, 86; connecting member of compressed film, 87; supply pipe of compressed fluid, 88; opening

Claims (5)

[Claims] 1. A frame for dehydration in a filter press having an inclined surface in which the thickness decreases from the inside of the frame on both sides of the hollow frame toward the inside of the hollow, and the inclined surface is formed from above the inclined surface. A dehydrating frame for a filter press, comprising: an expanding member having an inclined surface that extends further inward toward the hollow so as to be detachably attached to both sides of the dehydrating frame. 2. The dewatering frame for a filter press according to claim 1, wherein concave and convex portions are formed on the sides of the expansion members on both sides that enter into the hollow inside and are aligned with each other, and the concave and convex portions are fitted to each other. Dewatering frame in filter press. 3. The dewatering frame for a filter press according to claim 1 or 2, wherein the expansion members on both sides are fastened with a fastening tool. 4. The dewatering frame for a filter press according to claim 1, wherein tightening surfaces parallel to the frame to be tightened together with the frame of the hollow frame are formed on the outer circumferences of the expansion members on both sides. A dehydration frame in a filter press, which is characterized in that 5. A frame for dehydration in a filter press having an inclined surface in which the thickness decreases from the inside of the frame on both sides of the hollow frame toward the inside of the hollow, and the inclined surface is provided from above the inclined surface. An expansion member having an inclined surface that extends further inward toward the hollow is detachably provided on both sides of the frame for dehydration, and compression membranes hung on both sides of the frame are expanded from the frame. A squeezing plate in a filter press, which is configured to be supported along the inclined surface of the.