JPH02229511A - Filter body, rotary band filter with the filter bodies arranged therein and filter provided with the band filter - Google Patents

Abstract

PURPOSE:To improve the cleaning capacity of the filter by pivoting filter elements on a supporting shaft in parallel with a gap in-between and placing the elements on a rack member. CONSTITUTION:A filter element cleaning device 45 is provided on the cake outlet 44 side below the rotary band filter 3 and consists of rotary brushes 451 and 452 and a liq. chemical storage tank 453. Since the flocked parts of the brushes 451 and 452 are always dipped in the water or liq. chemical in the tank 453 while being rotated, the flocked parts of the brushes 451 and 452 are impregnated with the liq. chemical. The flocked parts of the brushes 451 and 452 impregnated with the liq. chemical are transferred below the rotary band filter 3 and brought into contact with the elements 11 hung scatteringly from the supporting shaft 12 while being rotated, and the element 11 is cleaned. The cleaning capacity is improved in this way.

Description

Detailed Description of the Invention (a. Object of the Invention) [Industrial Application Field] The present invention provides a method in which a filtration element having a solid-liquid separation function has a large number of specially shaped filtration elements each consisting of a columnar body having a slit surface. Filter bodies arranged at arbitrary intervals, a rotary belt-shaped filter formed by forming the filter bodies into a ring shape, and a cleaning means that includes the rotary belt-shaped filter in a filtration tank and cleans the filter element. The present invention relates to a filtration device equipped with a rotating band-shaped filter body provided with other means such as the above.

[Conventional technology]

Conventionally, centrifugation has been used as a method to separate suspended stock solutions containing filter dregs, such as sewage sludge, human waste treatment sludge, seafood processing wastewater, livestock farm wastewater, food factory wastewater, and organic chemical factory wastewater, into waste liquid and cake. - Pressure filtration method, vacuum dehydration method, belt press method, electroosmosis method, multiple disk method, etc. were used.

However, each of the above-mentioned methods has the following drawbacks. In other words, ■ Centrifugal separation has difficulty in separating liquids and solids when the difference in specific gravity is small. ■In the pressure filtration method, the dehydrated material to be separated, such as a sol/gel suspension, must be sequentially charged and pressurized, so the dehydration work is intermittent. Rapid clogging with solids occurs, which impedes subsequent filtration of liquid, and the filtration membrane has to be regenerated as appropriate. ■The vacuum dehydration method requires large-scale equipment including a vacuum pump to reduce the pressure of the dehydrated product to be separated, such as sol/gel suspension stock solution.
In addition, it took time to reduce the pressure from atmospheric pressure to vacuum. (2) In the belt press method, since the filtration membrane is used continuously, the filtration membrane had to be constantly regenerated and used, similar to the pressure filtration method. ■The electroosmosis method had the disadvantage of being structurally complex.

■In the multi-disk method, since the filter body is made up of a large number of stacked thin disks with different diameters and is intersected with each other, filter slag particles clog between the thin disks, and the filter slag particles The disadvantage was that it would wear out.

[Problem that the invention seeks to solve]

The object of the present invention is to eliminate the drawbacks of the above-mentioned prior art.
It is an object of the present invention to provide a filter body in which filter elements of a completely new shape are arranged, a rotating band-shaped filter body in which the filter bodies are arranged, and a filtration device equipped with the rotating band-shaped filter body.

That is, in this invention, the solid-liquid separation function is achieved by pivoting a large number of specially shaped filtration elements, each of which is a columnar body having a slit surface, on a support shaft, and by mounting and arranging them in parallel on a mounting member. A filter body is formed by arranging filter elements as a filter body, and the filter body is arranged in a strip shape to increase the filtration area, and further, the filter body is arranged in a strip shape and both ends are connected. The ring-shaped filtration elements are formed into a ring shape and attached to a driving means, and the driving means rotates the filter body in which the ring-shaped filtration elements are aligned.As the filtration elements repeat alignment and separation, the solids of the suspended stock solution are removed. The purpose of this invention is to provide a rotating band-shaped filter that can perform liquid separation and cleaning of the filter element. In addition, a rotating band-shaped filter body is arranged in a filter tank, and a cleaning means for cleaning the filter elements and filter slag particles clogged between the filter elements are removed around the filter body in which the ring-shaped filter elements are arranged. By arranging a means for removing filter slag particles, a pressurizing means for pressurizing the stock suspension loaded on the rotating band-shaped filter, and a filter element alignment means for aligning the filter elements, the solidification of the stock suspension can be reduced. It is an object of the present invention to provide a filtration device equipped with a rotating band-shaped filter body that can improve liquid separation and the cleaning ability of a filtration element.

(b. Structure of the Invention) [Means for Solving the Problems] In order to achieve the above object, the filter body in which the filter elements according to the present invention are arranged is such that the filter elements are formed from a columnar body having a slit surface. A plurality of filtration elements are pivotally supported in parallel to each other on a support shaft while maintaining an arbitrary interval from each other, and the filtration elements are mounted on a mounting member, and further, the support shaft and the mounting member are mounted on a frame. It is attached horizontally to a member.

Moreover, in order to achieve the above object, the filter body in which the filter elements according to the present invention are arranged is a filter body in which a large number of filter bodies in which the above-mentioned filter elements are arranged are arranged in a belt-like manner so as to be rotatable with each other. be.

Furthermore, in order to achieve the above object, a rotary band-shaped filter body in which the filter bodies according to the present invention are arranged is formed into a ring shape by rotatably joining both ends of the filter body in which the above-mentioned filter elements are arranged in a row. The filtration elements are mounted on a driving means for driving the aligned filter bodies.

Moreover, in order to achieve the above object, the filtration device equipped with the rotating band-shaped filter according to the present invention has the above-mentioned rotating band-shaped filter having a suspension liquid inlet, a filtrate outlet, and a cake outlet. A cleaning means for cleaning the filter elements is provided below the rotating strip-shaped filter, and a cleaning means for washing the filter elements is provided above the rotating strip-shaped filter to remove filter slag particles adhering between the filter elements. A means for removing filtration particles to be removed and a pressurizing means for pressurizing the suspension liquid introduced from the suspension liquid inlet of the filtration tank and loaded on the rotating band-shaped filter body are provided, and further, the rotating band-shaped filter body It is equipped with filter element alignment means for aligning the filter elements above or on the side of the body. [Operation] The above technical means operates as follows.

In other words, in the filter body, a large number of specially shaped filter elements are arranged at arbitrary intervals, so when the suspension stock is loaded on the filter body, there is a gap between the filter elements. Water seeps out and acts as a filter.

In addition, in a rotating belt-shaped filter, when the filter with the filter elements aligned is located on the upper side, each filter element is mounted in parallel on the mounting member with a certain gap maintained between each other, and the filter is used as a filter. It is transported while functioning. On the other hand, when the filter body is located on the lower side, each filter element is separated from the mounting member and transported while being suspended on the support shaft.

Furthermore, in a filtration device equipped with a rotating band-shaped filter, when the filter with the filter elements aligned is located on the upper side, each filter element is mounted on the mounting member in parallel with a certain gap between each other. is transferred while functioning as a filter, and further, the filter slag particles clogged between the filter elements are removed by the filtration particle removing means, and the solid-liquid separation M function is restarted, and
The suspension stock solution is further filtered and dehydrated by the pressurizing means. Further, when the filter body with the filter elements aligned is located on the lower side, each filter element is detached from the mounting member and transferred while suspended on the support shaft, and furthermore, each filter element is moved by the cleaning means. The filter element is washed and the solid-liquid separation function of the filter body is regenerated. Further, when the filter body is transferred from the lower side to the upper side, the filter elements are fitted and mounted on the mounting member again and aligned by the filter element alignment means.

〔 Example 〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a filter body according to the present invention, a rotating band-shaped filter body in which the filter bodies are lined up, and a filtration device equipped with the rotating band-shaped filter body will be described in detail based on Examples.

First, the filter body according to the present invention will be explained.

The filter body 1 includes a large number of filter elements 11, a support shaft l2 on which the filter element II is pivotally supported, a mounting member l3 on which the filter element II is mounted, the support shaft 12 and the mounting member. 13 is horizontally suspended, and the frame member 1 is engaged with the roller 31.
It consists of 4 parts and is shaped like a ``slatted drainboard.'' As shown in FIG. 1, the filter element 11 is an elongated ceramic bar shaped into an equilateral triangular prism in this embodiment, and has a length a of 10 cm and a depth b of 5 IllI.
The ll1 height dimension C is set to 71III1.

In this embodiment, the end faces of a plurality of adjacent equilateral triangular prisms forming a slit (groove) have a length of approximately 0.
．． This length ranges from about 30 mn+ as shown in Figure 2 (mountain) to 0.1 mn+ as shown in
A length of about o+m can also be used.

Furthermore, the filtration element 1 is located at the front lower part of the filtration element 11.
1 on the support shaft 12
is integrally formed, and is loosely inserted and suspended on a support shaft 12, which will be described later. The shape of the suspension part does not have to be limited to a substantially U-shape, and may be a circular hole, but it is preferable that the suspension part has a removable shape.

Further, the rear end portion 112 of the filter element 11 is formed in an arc shape. Note that the filter element 1l has a flat upper surface 113.
is suspended on the support shaft l2 with the ridge 114 facing upward and the ridge 114 facing downward. Furthermore, a large number of filter elements 11 pivotally supported on the support shaft 12 are connected to adjacent filter elements 1l.
The flat bodies 113 are arranged in parallel so that they are flush with each other. Note that the cross-sectional shape of the filter element 11 is not limited to an equilateral triangle as in this embodiment, but is shown in FIG.
As shown in 1 to Cl and (e), any material may be used as long as the upper surface is flat and a slit surface is formed on the side surface.

Furthermore, the material of the filter element 11 is not limited to ceramic, but may be any material that has wear resistance and corrosion resistance, such as metal or synthetic resin.

The support shaft l2 is a metal bar-shaped body with a circular cross section, whose both ends are screwed to the left and right frame members 14 and suspended horizontally. As will be described later, on the support shaft l2, a large number of filter elements 11 are suspended in parallel with each other with a certain slit (gap) held by a mounting member and with some play so that they can be attached and detached.・It is pivotally supported. In this embodiment, the support shaft is placed near the end of the filter element and is engaged with the support shaft, but it is also possible to place the support shaft in the center of the filter element. The mounting member 13 is a slender slope member on which the filter element 1l is mounted, and both ends thereof are screwed to the left and right frame members 14. In addition, in this embodiment, the portion on which the filter element 11 is mounted includes a ridge portion 114 and a slope portion 115 of the filter element 11.
V-shaped notches 131 into which the filtration element 11 is fitted are cut out at regular intervals, and by fitting the ridge part 114 and slope part 115 of the filtration element 1l into the notches 131, the filtration element 11 is held with a specific slit (gap) in place (see FIG. 1 (2)). Therefore, in this embodiment, the mounting member l3 not only mounts the filter element 11, but also supports the filter element l3.
It also plays the role of adjusting the spacing between the gaps. Therefore, by replacing the mounting member 13 with a mounting member 13 having a different interval between the notches 131, the interval between the slits (gap) between the filtration elements 11 can be adjusted to deal with solid-liquid separation of various types of suspension liquids. is possible.

Also, the spacing of the slits (gap) can be randomized (any width).
It is also possible to set the slit rows to be staggered like a houndstooth check (see FIG. 2 (n)).

Furthermore, the width of the filter element can be set arbitrarily, and an example in which filter elements of an arbitrary width are installed at an arbitrary interval (see FIG. 2 (0)) is also possible, and each filter element The width of the slit (gap) between them can also be set to be adjustable.

Incidentally, the inclined portions 132, 13 of the ■-shaped notch 131
3 is in contact with the slope portion 115 of the filtration element 11 to support the filtration element 11.
), even if the ridge portion 114 of the filter element l1 is damaged, no step is created between the flat upper surface 113 of the adjacent filter element 11. In addition, even if the filter element 11 is damaged, it is possible to remove the engaged suspension part or remove the frame member 14 (described later).
, the damaged filter element 11 can be removed and replaced with a new filter element 11.

Furthermore, since the suspension and cake are loaded onto the filter element 11, the mounting member 13 also has the function of supporting the weight thereof. Therefore, as in this embodiment, the mounting member 13 is provided not only near the rear end 112 of the filtration element 11 but also near the center, thereby further reinforcing the function of supporting the weight of the suspension stock solution, etc. It's good as well.

The frame member 14 is a rectangular elongated slope member to which the support shaft 12 and the mounting member 13 are horizontally screwed. The upper left side 141 and the lower right side 142 of the frame member 14 are cut into rectangular shapes, and the lower left and right sides have grooves for rotatably connecting the frame members of other filter bodies, as shown in FIG. hole 1
43. 144 is drilled.

Further, in this embodiment, the upper end portion 145 of the frame member 14
The upper surface 113 of the filter element 11 is set to be flush with the upper surface 113 of the filter element 11.

When the suspension liquid is loaded on the filter body 1 configured in this way, the suspension liquid containing the sol state and gel state is contained in the suspension liquid from the slit between each filter element 11 (between R). Water oozes out, and only a cake, which is a mass of filter dregs particles after the moisture oozes out and solid-liquid separation, is deposited on the filter element 11. Therefore, the filter body 1 provided with a large number of slits functions as a filter body.

Next, an embodiment 2 in which filter bodies 1 according to the present invention are arranged in a band-like manner (hereinafter referred to as "band-shaped filter body") will be explained.

That is, as shown in FIG. 3, the band-shaped filter body 2 has a configuration in which a large number of the above-described filter bodies 1 are arranged in a belt-like manner so as to be rotatable with respect to each other.

That is, the filter bodies 1 described above are rotatably connected to each other through holes 143 and 144 bored on the left and right sides of the frame member 14. By arranging a large number of filter bodies 1 in a strip-like manner, the filtration area becomes longer and the solid-liquid separation function is improved. Although the embodiment shown in FIG. 3 is of a type in which the frame members l4 are arranged only on the upper and lower sides of the filter element 11, the present invention is not limited to this. That is, depending on the number and weight of the filtration elements 11 to be aligned, the weight of the suspended liquid to be loaded, the load capacity of the support shaft 12, etc., a frame member 14 may be further arranged between the filtration elements 11.

Furthermore, a rotating band-shaped filter body 3 in which filter bodies according to the present invention are arranged will be explained.

As shown in FIG. 4(1), the rotating band-shaped filter body 3 has a structure in which the above-mentioned band-shaped filter bodies 2 are arranged in a ring-like manner and are wound around a roller 31 serving as a driving means. That is, the roller 31 is a cylindrical shaft body, and is rotationally driven by a motor (not shown). Also, Figure 4 (2)
As shown in , the roller 31 is provided with a groove 311 in which the frame member 14 is engaged. As shown in FIG. 4 (1), the belt-shaped filter body 2 wound around the roller 31 has a longitudinal dimension d.
is set to 2 m, the depth e is set to 1 m, and the height f is set to 40 cn+.

Next, the operation of the rotary band-shaped filter body 3 including the filter body 1 made of a specially shaped filter element according to the present invention will be explained.

In other words, the suspended liquid loaded on the band-shaped filter 2, which constitutes the rotating band-shaped filter 3, is moved forward by the rollers 31, and is contained in the suspended liquid including the sol state and the gel state. The water falling from the filter element 11 falls through the slit between the filter elements 11. As a result, the suspended stock solution containing filter dregs particles is separated into solid and liquid, and gradually accumulates on the band-shaped filter body 2, which is joined at both ends, to form a cake. After the cake is discharged from the band-shaped filter body 2 whose both ends are joined, the filter body 2 is transferred downward by the rollers 31. Each filter element 11 constituting the band-shaped filter body 2 whose both ends are joined is pivotally supported by a support shaft 12, and is simply mounted on a mounting member 13.
It is a structure that is mounted on top of. For this reason, when the band-shaped filter body 2 with both ends connected is transferred downward, each filter element l1 rotates around the support shaft 12 and becomes in a state where it hangs apart from the support shaft 12 (fourth (See Figure (1)). At this time, the filter dregs adhering between the filter elements 11 are peeled off and removed by vibration during rotation. Furthermore, when the band-shaped filter body 2 with both ends joined is transferred upward, each filter element 11 hanging from the support shaft 12 is fitted onto the mounting member 13 again. They are assembled, mounted, and aligned to function as a filter.

In this way, the rotating band-shaped filter body 3 repeats the state in which the filter elements 11 are hanging apart from the support shaft 12 and the state in which they are mounted and aligned on the mounting member l3. This structure separates the suspension stock into a filtrate and a cake.

Furthermore, a filtration device 1 equipped with a rotating band-shaped filter body according to the present invention
4 will be explained.

As shown in FIG.
2, a filtrate discharge port 43, and a cake discharge port 44, a rotary band-shaped filter body 3, a filter element cleaning device 45 as a cleaning means, and a brush schema as a filter particle removal means 46, and a pressure belt 4 as a pressure means.
7, and a filter element alignment roller 48 as a means for aligning the filter elements. In the embodiment shown in FIG. 5, the rotating belt-shaped filter body 3 is arranged at an angle in order to promote gravity dehydration of the suspended stock solution.

The filtration element cleaning device 45 is disposed on the cake discharge port 44 side below the rotating band-shaped filter 3, and includes two rotating brushes 4.
51, 452, and a tank 453 in which water or chemical solution for cleaning the rotating brushes 451, 452 is stored.

The flocked portions of the rotating brushes 451 and 452 are constantly immersed in the water or chemical solution stored in the tank 453 while rotating, so the flocked portions of the rotating brushes 451 and 452 are always impregnated with the chemical solution. . The flocked portions of the rotating brushes 451 and 452 impregnated with water or a chemical solution are transferred to the lower part of the rotating band-shaped filter 3 and come into contact with the filter element 11 which is hanging apart from the support shaft 12 while rotating. The filter dregs that have not been peeled off or removed but are stuck together are scraped off by the vibrations when the rotary band-shaped filter body 3 is transferred from the upper side to the lower side. As a result, the filter element 11 is cleaned.

The brush schema 46 is disposed on the side of the suspension liquid inlet 42 above the rotary strip-shaped filter 3, close to the strip-shaped filter 2 whose both ends are connected, and is connected to the two rotating shafts 461, 462. , a belt 46 wound around the rotating shafts 461 and 462.
Consists of 3. A wire-like brush 464 is attached to the belt 463.
has been planted. Furthermore, the brushes 464 are planted at regular intervals so that the tips of the brushes 464 are inserted into the slits (gap) between the filter elements 11. Further, the speed of the belt 463 is set so that it rotates faster than the belt-shaped filter body 2 whose both ends are connected. Therefore, the brush 464 of the belt 463 that has entered the slit (gap) between the filtration elements 1l scrapes up the suspended stock solution while pressing it in the advancing direction, so that the filter slag particles clogged in the slit (gap) between the filtration elements 1l is scraped up and removed, and the band-shaped filter body 2, whose ends are joined, is regenerated into a state in which solid-liquid separation is always possible.

The pressure belt 47 is disposed on the cake discharge port 44 side above the strip-shaped filter body 2 whose both ends are coupled, in close proximity to the strip-shaped filter body 2 whose both ends are coupled, and is attached to the rotating shaft of the two machines. 471,
472, a belt 473 wound around the rotating shafts 471 and 472, and a plurality of machines provided inside the belt 473 to press the belt 473 onto the belt-shaped filter body 2 whose both ends are connected. It consists of a pressure roller 474. A belt 473 is connected to the belt-shaped filter body 2 at both ends via a roller.
By pressing upward, the band-shaped filter body 2 is joined at both ends.
The front part (the part where the brush schema 46 is provided)
The suspended stock solution separated into solid and liquid is further dehydrated under pressure. This further reduces the water content of the suspension stock. The filtration element alignment roller 48 is a cylindrical shaft body that is disposed above the rotary band-shaped filter 3 on the side of the suspension liquid inlet 42 and close to the band-shaped filter 2 whose both ends are connected. Also,
The filter element alignment roller 48 has approximately the same length as the depth dimension e (see FIG. 4 (1)) of the band-shaped filter body 2 whose both ends are joined.
It is arranged parallel to the roller 31 of the rotating band-shaped filter body 3.

When the filtration element 11, which has been transferred to the lower side of the rotating band-shaped filter body 3 and suspended from the support shaft l2, is transferred to the upper side of the rotating band-shaped filter body 3 by the filtration element alignment roller 48, the filtration element 11 is The filter elements are fitted and mounted on the filter element alignment roller 48 so as to be aligned with the notches of the mounting member 13 .

Note that an embodiment in which only the pressure belt 47 as the pressure means is removed is also conceivable.

Next, a filter device 4 equipped with a rotating band-shaped filter body according to the present invention
Explain how it works.

The suspension stock solution 5 (including sol-like and gel-like stock solutions) introduced from the suspension stock solution inlet 42 is loaded onto the strip-shaped filter body 2 to which both ends of the rotating strip-shaped filter body 3 are connected. The loaded suspension stock solution 5 is dehydrated by gravity while being transferred toward the cake outlet 44 by the rotating band-shaped filter body 2 whose both ends are connected, and the water in the suspension stock solution 5 is filtered through the slit between the filter elements 11. It falls to the bottom of the tank 41. At this time, since the brush schema 46 is operating, the filter dregs particles stuck in the slits (gap) between the filter elements 11 are scraped up and removed, and the suspended stock solution 5 is effectively dehydrated by gravity. The suspended stock solution 5 subjected to gravity dewatering is further transferred toward the cake outlet 44, and dehydrated under pressure by a pressure belt 47 to form a cake. The cake is transferred from the cake outlet 44 to the filtration tank 4.
1 is discharged outside. The band-shaped filter body 2, which has discharged the cake and whose both ends are joined, is transferred to the lower side of the rotating band-shaped filter body 3. The filter element 11 of the band-shaped filter body 2, which has been transferred to the lower side and has both ends joined together, rotates around the support shaft 12 and is suspended from the support shaft 12 in pieces, and the vibration of the rotation causes the filter element 11 to rotate around the support shaft 12. Element 11 is cleaned. Furthermore, when the band-shaped filter body 2 with both ends joined is transferred to the upper side,
The filtration element 11 hanging from the support shaft 12 is fitted, mounted, and aligned on the mounting member 13 again by the filtration element alignment roller 48, and functions as a filter.

Above, the invention made by the present inventor has been specifically explained based on each example. However, the present invention is not limited to the above-mentioned examples, and can be modified in various ways without departing from the gist of the invention. Needless to say, it is.

(c. Effects of the Invention) The filter body according to the present invention, the rotating band-shaped filter body in which the filter bodies are arranged, and the filtration device equipped with the rotating band-shaped filter body have the configurations described in detail above, and therefore are different from conventional filter bodies. It solves the problems of , and has the following effects.

In other words, the filter body drains water exuded from the suspended liquid containing the sol state and the gel state through the slits (
It has the practical effect of functioning as a filter on which only the solid-liquid separated cake discharged from the gap) is loaded. Furthermore, by rotating the belt-shaped filter body with the filter bodies connected at both ends by a driving means, the filtration elements repeat alignment and separation, and perform solid-liquid separation of the suspended stock solution and filtration. It has the unique practical effect of being able to clean the device. Moreover, for this reason, it also has a practical effect in that it is not necessary to select and filter filterable substances, unlike other methods such as centrifugal separation and pressure filtration. Furthermore, the filtration device equipped with the rotating band-shaped filter has the practical effect of further improving the solid-liquid separation ability of the suspended stock solution and the cleaning ability of the filtration element.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a filter body according to the present invention, and FIG.
Figures (a) to (e) are cross-sectional views showing slit surfaces of other filter elements, and Figures 2 (d) to (0) are plan views showing other aspects of the method of paralleling filter elements, FIG. 3 is a perspective view of a filter body in which filter bodies are arranged in a band shape, FIG. This is a schematic diagram of the device. 1: Filter body 11: Filter element 12: Support shaft 13: Mounting member 14: Frame member 2: Band-shaped filter body with both ends joined 3: Rotating strip-shaped filter body 31: Roller 4: Filtration device 41: Filtration tank 42: Suspension solution inlet 43: Filtrate outlet 44: Cake outlet 45: Filtration element cleaning device (cleaning means) 46: Brush schema (filter particle removal and transfer means) 47: Pressure roller (pressure means) 48: Filtration Element alignment roller (filter element alignment means) 5: Suspension stock solution

Claims (5)

[Claims] (1) A plurality of filtration elements are pivotally supported in parallel on a support shaft with a gap maintained between them, the filtration elements are mounted on a mounting member, and the support shaft and the mounting member are mounted on a frame. A filter body characterized by being attached horizontally to a member. (2) The slit surface of the filter element according to claim 1 is 0.1~
A filter body characterized by being formed with a thickness of 30 mm. (3) A filter body characterized in that a large number of filter bodies according to claim 1 are arranged in a strip-like manner so as to be rotatable with respect to each other. (4) A filter characterized in that the filter body according to claim 3 is rotatably joined at both ends to form a ring shape, and is attached to a driving means for driving the filter body in which the filter elements are aligned. Rotating band-shaped filtration body with bodies arranged side by side (5) The rotating band-shaped filter according to claim 4 is disposed in a filtration tank having a suspension liquid inlet, a filtrate outlet, and a cake outlet, and the rotating band-shaped filter is disposed below the rotating band-shaped filter. A cleaning means for cleaning the filter element is provided, and a filter slag particle removal and transfer means is provided above the rotating band-shaped filter body for removing filter slag particles adhering between the filter elements, and further, a washing means for removing filter slag particles adhering between the filter elements is provided above the rotating band-shaped filter body or A filtration device equipped with a rotating band-shaped filter body, characterized in that a filtration element alignment means for aligning filtration elements laterally is provided.