JP2006263621A - Filter plate of siphon type filtration concentration apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter plate 10 of a siphon type filtration concentration apparatus 50 which can narrow the space required in the upper part of the apparatus at the time of being pulled up out of a filtration concentration tank 51 or stored in the filtration concentration tank 51 at the time of replacement, inspection and repair. <P>SOLUTION: The filter plate 10 comprises a filter body 11 and a supporting frame 20 to attach the filter body 11 to and is to be housed and placed in a filtration concentration tank 51 filled with an object to be treated, for example, sludge and in a manner that the filter plate 11 can be divided in vertical direction of the supporting frame 20. Practically, a frame body 21 of the supporting frame 20 in the vertical direction is formed by joining a plurality of link members 23 to one another in rotatable manner to make the filtration plate 19 fold-able or roll-able, or a plurality of pairs of filtration structure bodies 45 each comprising the filter body 11 attached to the supporting frame 20 are arranged vertically and joined to one another with a joining member 46 which separably connects the supporting frames 20 of neighboring structure bodies 45 and 45 to make the filtration plate separable in the vertical direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  An object of the present invention is to greatly improve the efficiency of dewatering treatment by, for example, concentrating sludge and reducing the amount of sludge generated in a water purification plant, a sewage treatment plant, or a general industrial manufacturing plant. More particularly, the present invention relates to a filter plate used in a siphon-type filter concentration device that performs filtration and concentration of sludge using the siphon effect among the concentration devices.

  The siphon type filtration and concentration device is a target to be treated, for example, the sludge is filled in the filtration and concentration tank, and the sludge is filtered and concentrated by the filter plate accommodated in the filtration and concentration tank. A filtrate discharge system for discharging the filtrate that has permeated the inside out of the filtration concentration tank is caused to function as a siphon. In the filtration and concentration tank, sludge particles as solid content in the sludge are deposited on the surface of the filter plate immersed in the sludge to form a layer of concentrated sludge, and moisture in the sludge is added to the filter plate. When the filtrate passes through the filtrate discharge system and is discharged out of the filtration concentration tank as a filtrate, siphons are formed by the flow of the filtrate through the filtrate discharge system, so that sludge can be efficiently removed only by the flow energy of the filtrate. It can be filtered and concentrated. Therefore, the energy required for the filtration and concentration treatment can be greatly reduced, and it is evaluated as an extremely economical filtration and concentration device.

  Here, an example of the configuration of the siphon type filtration concentration apparatus 50 will be briefly described with reference to FIG. 3. 51 is a filtration concentration tank, which forms a square tank whose upper part is open, and a filter plate 65 described later is provided from the upper part. In addition to being inserted and accommodated in the tank, for example, a conduit 53 for filling and discharging sludge to be treated or discharging concentrated sludge as a solid content is provided at the bottom, and the bottom is formed into a hopper shape. Thus, the concentrated sludge can be suitably discharged from the conduit 53.

  A filter plate 65 is immersed in sludge in the filtration and concentration tank 51 to separate and filter sludge particles and moisture in the sludge. Usually, a plurality of sheets (2 to 60) are provided in the filtration and concentration tank 51. Filter plates 65) are arranged in parallel in an upright state at a predetermined interval. The filter plate 65 can be configured by attaching a filter body 66 having a filter function, such as a filter cloth or a net-like body, to a support frame 67 having rigidity. The filter body 66 includes a filtrate discharge system 55 described later. One end is inserted.

  55 is a filtrate discharge system for discharging the filtrate in the filter plate 65 to the outside of the filtration concentration tank 51, and functions as a siphon when the filtrate flows inside. In FIG. 3, the filtrate discharge system 55 includes a filtrate collection pipe 57, a header 58, and a filtrate discharge pipe 59, and the filtrate in the filter body 66 of the filter plate 65 passes through the filtrate collection pipe 57 to the header 58. After flowing, the liquid is discharged from the header 58 through the filtrate discharge pipe 59 to the outside of the filtration concentration tank 51.

  The filtrate collecting pipe 57 is provided for each filter plate 65 in the filtration and concentration tank 51, and one end is inserted and opened in the filter body 66 in the filter plate 65. The header 58 collects a plurality of (usually about 2 to 10) filter plates 65 as a group, and the filtrate collecting pipe 57 is connected to one header 58 every plurality (about 2 to 10). Has been. One filtrate discharge pipe 59 is connected to one header 58, and extends below the header 58.

  An air vent valve 61 is provided above the header 58 at the top of the filtrate discharge system 55, and a trap 63 is provided at the discharge port of the filtrate discharge system 55 to prevent the siphon effect from being reduced or lost. Further, a filtrate discharge valve 62 capable of opening and closing the filtrate discharge system 55 is provided above the trap 63.

Examples of the prior art of the present invention include the following.
Japanese Examined Patent Publication No.4-2285 (right column on page 1, Fig. 8)

  In the siphon type filtration concentration apparatus 50, the negative pressure generated by the flow of the filtrate in the filtrate discharge system 55 forming the siphon becomes the filtration pressure, and the negative pressure acts in the filter body 66. The filtrate is permeated into the filter body 66 and the concentrated sludge is deposited on the surface of the filter body 66. Hereinafter, in the present application, the negative pressure acting on the filtrate discharge system and the filter body due to the siphon effect is referred to as “siphon pressure”.

  This siphon pressure (filtration pressure) is determined by the water level difference between the sludge liquid level in the filtration and concentration tank 51 and the filtrate liquid level discharged by the filtrate discharge system 55. In order to obtain the filtration pressure, it is necessary to secure the difference in water level necessary for the generation of the filtration pressure. Therefore, the entire siphon type filtration concentration apparatus 50 including the filtration concentration tank 51 has a certain height. It will be a thing.

  Further, the siphon type filtration concentration device 50 is configured to fill the filtration concentration tank 51 with sludge and to arrange the filter plate 65 in the filtration concentration tank 51 so as to be immersed in the sludge. It is structurally impossible to pull up the filtration plate 65 from the filtration concentration tank 51 and to accommodate the filtration plate 65 in the filtration concentration tank 51 from the side or the lower side of the filtration concentration tank 51. Therefore, the filtration plate 65 is pulled up and stored from above the filtration concentration tank 51.

  Here, the filter plate 65 disposed in the filtration and concentration tank 51 generally has a flat plate shape in which a filter body 66 is attached to a support frame 67 as shown in FIG. Since it is rigid and cannot be bent or wound, the entire filter plate 65 is suspended above the filter concentration tank 51 when the filter plate 65 is pulled up or stored. However, it is necessary to have a space high enough.

  Therefore, when the siphon type filtration concentrating device 50 is installed, a space in which the height of the filter plate 65 is added to the height of the filter concentration tank 51 is required in the vertical direction. Since it has a considerable height from the viewpoint of securing the contact area with the sludge in the tank 51, it is usually necessary to secure a height of 8 m or more.

  In general, since the siphon type filtration concentrator 50 can be installed outdoors, there is not much trouble in securing a wide space in the vertical direction. However, when the siphon type filtration concentration device 50 is used in a cold region or a region with a lot of snow, indoors are used to prevent sludge in the filtration concentration tank 51 from freezing or snow accumulation in the filtration concentration tank 51. As a result, it is necessary to secure the space in the vertical direction.

  That is, when constructing a new building in which the siphon type filtration concentrator 50 is installed, it is necessary to increase the height under the beam of the building in order to secure the vertical space as described above. This is a major factor. In addition, even when trying to use an empty space in an existing building, there are cases in which the use of the empty space cannot be achieved due to the restriction condition due to the height under the beam. Therefore, when the siphon type filtration concentration apparatus 50 is installed in a building, the space required in the vertical direction must be reduced as much as possible.

  However, in order to obtain a desired filtration pressure (siphon pressure), the siphon type filtration and concentration device 50 cannot in principle reduce the height of the device such as the filtration and concentration tank 51 as described above. is there.

  Therefore, the present invention provides an apparatus for siphon type filtration concentration apparatus 50 for lifting the filtration plate from filtration concentration tank 51 or accommodating the filtration plate in filtration concentration tank 51 at the time of replacement, inspection, repair or the like of the filtration plate. Provided is a filter plate that can reduce the space that needs to be secured above as much as possible, and can reduce the under-beam height required for the building when the siphon type filtration device is stored in the building. For the purpose.

  In order to solve the above problems, the filter plate 10 of the present invention includes one or a plurality of filter bodies 11 and one or a plurality of support frames 20 to which the filter bodies 11 are attached, and is filled with, for example, sludge. The filtration plate 10 of the siphon type filtration concentration device 50 accommodated and disposed in the filtration concentration tank 51 is characterized in that the support frame 20 is provided so as to be divided in the vertical direction of the support frame 20 ( Claim 1).

  As an embodiment of the filter plate 10, as shown in FIG. 1, a frame body 21 (21 b, 21 b, 21 b) that forms a vertical direction of the support frame 20, preferably using the filter body 11 made of a flexible material. 21d) is constituted by link members 23, 23,... 23 divided into a plurality of pieces in the vertical direction, and the filter plate 10 in which the adjacent link members 23, 23 are rotatably connected to each other can be cited. 2).

  Further, as another embodiment of the filter plate 10, as shown in FIG. 2, a plurality of filter structures 45 each having the filter body 11 attached to the support frame 20 are arranged in the vertical direction as a whole. And a filter plate 10 in which the support frames 20 and 20 of the adjacent filtration structures 45 and 45 are connected via a detachable connector 46 (Claim 3). .

  As described above, in the filtration plate 10 (see FIG. 2) in which a plurality of the filtration structures 45 are arranged in the vertical direction, at least a part of the support frame 20 of the filtration structure 45 is the It is good also as the pipe line 25 which makes the filtrate in the filter body 11 flowable (Claim 4). In this case, let the said connection tool 46 be a pipe joint, and the said filtration structure adjacent via this pipe joint 46 It is preferable to connect the pipes 25 in the support frames 20 and 45 of the 45 and 45 (Claim 5).

  In the filter plate 10 of the present invention, the filter body 11 can be formed of a filter cloth. In particular, in the filter plate 10 (see FIG. 1) constituted by a plurality of link members 23, 23... 23 that are rotatably connected to a frame body 21 (21b, 21d) that forms a vertical direction of the support frame 20. The filter body 11 is preferably formed of a filter cloth.

  In the siphon type filtration concentrator 50, for example, when exchanging, inspecting, or repairing the filter plate, the filter plate is pulled up from the filter concentration tank 51, and the filter plate is accommodated in the filter concentration tank 51. Although the work is required, the conventional siphon type filtration concentrating device 50 uses a flat plate-like filter plate 65 that cannot be deformed. Must be lifted above the filtration concentration tank 51. For this reason, it is necessary to secure a space above the total length (total height) of the filter plate 65 above the filter concentration tank 51.

  However, according to the filter plate 10 in the siphon type filtration concentrator 50 of the present invention, the filter plate 10 is provided so as to be divided in the vertical direction of the support frame 20. When the filter plate 10 is pulled up from the filter concentration tank 51 or when the filter plate 10 is accommodated in the filter concentration tank 51, the height is secured above the filter concentration tank 51. The space that must be done can be greatly reduced.

  Therefore, when the siphon type filtration concentration device 50 is installed indoors in a cold region or a region with a lot of snow, the height under the beam of the building required for installation of the device is the same as when the conventional filter plate 65 is used. It can be much lower compared. Therefore, when constructing a building for storing the siphon type filtration concentrator 50, the construction cost can be reduced. In addition, since the constraint condition due to the height under the beam is relaxed, it is possible to effectively use the empty space in the existing building.

  Specifically, as shown in FIG. 1, the filter body 11 is made of a flexible material such as a filter cloth, and a frame body 21 (21b, 21d) that is perpendicular to the support frame 20 is According to the filter plate 10 in which the link members 23, 23... 23 divided into a plurality of parts in the vertical direction are connected to each other so as to be rotatable, the filter plate 10 is moved in the vertical direction as the link members 23, 23. The filter plate 10 can be bent or wound when the filter plate 10 is pulled up from the filter concentration tank 51 or when the filter plate 10 is accommodated in the filter concentration tank 51. can do.

  Further, as shown in FIG. 2, a plurality of filtration structures 45 each having the filtration body 11 attached to the support frame 20 are arranged in the vertical direction, and the support of the adjacent filtration structures 45, 45 is supported. According to the filter plate 10 in which the frames 20, 20 are connected via the detachable connector 46, the filter plate 10 can be divided for each filter structure 45 by detachment of the connector 46. When the filtration plate 10 is pulled up from the filtration concentration tank 51 or when the filtration plate 10 is accommodated in the filtration concentration tank 51, the filtration plate 10 can be divided in the vertical direction to reduce the accommodation area.

  Further, in the filtration plate 10 (see FIG. 2) in which a plurality of sets of the filtration structures 45 are arranged in the vertical direction, at least a part of the support frame 20 of the filtration structure 45 is disposed in the filtration body 11. In the case of the conduit 25 allowing the filtrate to flow, it is not necessary to separately provide a conduit for allowing the filtrate in the filter body 11 to flow, and the structure can be simplified. In particular, if the connecting tool 46 is a pipe joint and the pipe lines 25 in the support frames 20, 20 of the adjacent filtration structures 45, 45 are connected via the pipe joint 46, The filtrate flowing in the pipe line 25 can flow into the pipe line 25 of the upper support frame 20 through the pipe joint 46, and each of the filtration structures 45, 45. The filtrates that permeate into the filter bodies 11, 11... Can be sequentially joined from below and can be collectively flowed to the top of the filter plate 10, and reach the outside of the filter concentration tank 51 for each individual filter structure 45. There is no need to provide a separate filtrate line. Therefore, by separately providing the pipe line, it is possible to prevent the depth of the filter plate 10 from increasing, and a desired number of filter plates 10 can be arranged in parallel in the filter concentration tank 51.

  The filter plate 10 of the present invention is formed by attaching the filter body 11 to the support frame 20, accommodated in the filtration concentration tank 51 of the siphon type filtration concentration apparatus 50, and sludge filled in the filtration concentration tank 51. Concentrates and filters, while maintaining the same performance as the conventional filter plate 65, when the filter plate 10 is pulled up from the filter concentration tank 51 in order to replace, inspect, repair, etc. When accommodated in the concentration tank 51, to reduce the height of the filtration plate 10 and make it possible to minimize the space required to be secured above the filtration concentration tank 51, The filter plate 10 is provided so as to be divided in the vertical direction.

  The filter plate 10 of the present invention may have any configuration as long as it can be divided in the vertical direction of the support frame 20 of the filter plate 10 and is not particularly limited. A configuration in which the plate 10 can be bent or wound in the vertical direction can be given. Hereinafter, embodiments of the filter plate 10 of the present invention having the above-described configuration will be described with reference to the drawings.

  In the present invention, the configuration of the siphon type filtration concentration device 50 excluding the filter plate 10 is the same as that of the known siphon type filtration concentration device, including the siphon type filtration concentration device 50 shown in FIG. Therefore, the description other than the filter plate 10 is omitted.

(1) Filter plate 10 that can be bent or wound in the vertical direction (FIG. 1)
In the embodiment shown in FIG. 1, a frame body 21 (21 b, 21 d) that forms a vertical direction among the support frame 20 to which the filter body 11 is attached is configured by a plurality of link members 23, 23. , 23... Are divided in the vertical direction, and link members 23, 23 adjacent to each other in the vertical direction are connected to each other so that the filter plate 10 can be divided in the vertical direction of the support frame 20. Is. In the filter plate 10, the frame bodies 21 b and 21 d forming the vertical direction of the support frame 20 are composed of a plurality of rotatable link members 23, 23... 23, so that the filter body 11 is attached to the support frame 20. It can be bent (folded) or wound (winded up) in the vertical direction.

(Filter body)
The filter body 11 is filled in the filtration and concentration tank 51, and is immersed in, for example, sludge to be treated. The filter body 11 accumulates sludge particles, which are solid in the sludge, on its surface, and permeates moisture in the sludge as a filtrate. It functions as a filter that causes The sludge particles (concentrated sludge) adhering and accumulating on the surface of the filter body 11 are discharged to the outside of the filtration concentration tank 51 from a discharge port provided below the filtration concentration tank 51 at a stage where they are laminated to a certain thickness. Further, the water (filtrate) that has permeated into the filter body 11 is discharged to the outside of the filtration and concentration tank 51 through the end portion of the filtrate discharge system 55 inserted into the filter body 11.

  The filter body 11 only needs to have a filter function for separating and filtering sludge into sludge particles (concentrated sludge) and moisture (filtrate), and filter bodies 11 of various known materials and various configurations can be used. However, from the viewpoint of enabling bending and winding in the vertical direction in the state of the filter plate 10 attached to the support frame 20 to be described later, it is configured of a material having flexibility.

  As the filter body 11, it is preferable to use a filter cloth made of synthetic resin or the like. As an example, a filling material is formed inside the filter cloth formed in a liquid-tight bag body by stitching or bonding with an adhesive. Can be used. By storing the filler in the bag body of the filter cloth, a flow path for the filtrate can be suitably secured between the filter cloths forming the front and back surfaces of the bag body.

  When the filter body 11 is formed using the filter cloth as a bag as described above, the bag body may be formed by sewing, bonding, or the like only at the periphery, but the filler is accommodated in the bag body of the filter cloth. It is preferable to have a configuration in which a plurality of storage portions are provided. In the embodiment shown in FIG. 1, a vertically long storage portion that divides the bag body in the width direction is formed on a bag body formed by stitching filter cloths. A plurality of filter bodies 11 are formed by stitching, and a filler is stored in the storage portion. In the figure, the dotted line indicates the suture line 17.

  Further, at the upper part in the filter body 11, a pumping part 56, which is an end part of the filtrate discharge system 55, is substantially the same as the upper end edge of the filter body 11 so that the width direction of the filter body 11 is the longitudinal direction. Inserted in parallel. The pumping part 56 is formed by, for example, a perforated pipe having a plurality of holes formed at a predetermined interval, and is configured so that the filtrate in the filter body 11 can be discharged from a wide range.

  In addition, eyelets 16 are provided on the periphery of the filter body 11 at appropriate intervals, and the filter body 11 is configured to be attached to a support frame 20 described later via the eyelet 16.

  As a manufacturing method of the filter body 11 provided with the storage portion, two filter cloths are opposed to each other, and three sides except the upper side are sewn to form a bag body, and the bag body is sewn in a vertical direction. There is a method in which a plurality of vertically long storage portions that divide the bag body in the width direction are formed, a strip-like filler is inserted into the storage portion, and then the upper side of the bag body is stitched and closed. If the filler is made of a material that can be sewn by a sewing machine such as an industrial sewing machine, the filler is placed between two filter cloths facing each other, and the filter cloth and the filler are sewn together. The filter cloth and the filler may be further sewn in the vertical direction of the bag body to form a plurality of the vertically long storage portions in the width direction of the bag body. Forming a bag body having an upper side opened by sewing a cloth, inserting the filler into the bag body, and then sewing the filter cloth and the filler together to divide the bag body in the width direction. A portion may be provided, and the method is not particularly limited as long as the filter body 11 in which the filler is accommodated is finally formed in the storage portion of the bag body made of filter cloth.

  Thus, since the filter body 11 has a plurality of vertically long storage portions, a flow path for the filtrate is formed by the storage portion, and thus the filtrate can be suitably flowed.

  In the embodiment shown in FIG. 1, a scooping portion 56 that is an end portion of the filtrate discharge system 55 is inserted and arranged in an upper part of the filter body 11 substantially in parallel with the upper end edge of the filter body 11. Therefore, the water (filtrate) that has permeated into the filter body 11 flows from the lower part to the upper part in each storage part in the filter plate 10 toward the liquid drawing part 56 as indicated by an arrow in the figure.

  Moreover, since the suture line 17 part which divides a storage part among the said filter bodies 11 will be in the state where thickness was reduced rather than the other part of the filter body 11 surface, the concentration which adhered and deposited on the filter body 11 surface. When the sludge is peeled off, a gap is easily generated between the filter body 11 and the concentrated sludge at the stitched portion, so that the concentrated sludge can be easily peeled off.

  In the illustrated embodiment, the filter body 11 has a rectangular shape, but the shape of the filter body 11 is not limited to this, and is normally used as a filter body of the siphon type filtration concentrator 50. In addition, the below-described support frame 20 that supports the filter body 11 can also take various shapes. For example, as shown in FIG. 3, when the bottom part of the filtration concentration tank 51 of the siphon type filtration concentration apparatus 50 is configured in a hopper shape that is inclined in a direction of gradually reducing the width between the side walls, the filter body 11 is used. The shape of the support frame 20 is also corresponding to this, and it may be a hexagon (so-called “home base type”) in which both ends of the lower side of the rectangular shape are obliquely cut like the filter body 66 and the support frame 67 of FIG. Good.

[Support frame]
The support frame 20 is for holding the filter body 11 in a tensioned state, and is disposed on the periphery of the filter body 11 with an appropriate interval from the filter body 11.

  In the embodiment shown in FIG. 1, the support frame 20 connects the sides 11 a to 11 d of the filter body 11 to frame bodies 21 (21 a to 21 d) arranged substantially parallel to each other with an appropriate interval. Thus, the sides 11a to 11d of the filter body 11 can be attached to each of the frame bodies 21 (21a to 21d) corresponding to the sides 11a to 11d via attachment tools such as a wire 28 and a coil spring 29. Yes.

  The conventional support frame 20 has a configuration that is rigid as a whole and cannot be bent or wound. However, the support frame 20 used in the present embodiment bends or winds the filter plate 10 in the vertical direction. In order to be able to rotate, the frame body 21 (the frame body 21b that forms the right side and the frame body 21d that forms the left side) that forms the vertical direction of the support frame 20 can rotate the link members 23, 23. By being connected, the support frame is provided so as to be divided in the vertical direction.

  As described above, the frame bodies 21b and 21d forming the vertical direction are configured by the plurality of link members 23, 23... 23, and the frame bodies 21b and 21d are connected to the link members 23 and 23 adjacent to each other in the vertical direction (link connection portion). 24), the support frame 20 can be bent or wound in the vertical direction with the filter body 11 attached thereto.

  If the link members 23, 23 adjacent to each other in the vertical direction are connected to each other so as to be rotatable, the connecting method is limited as long as the support frame 20 can be bent or wound in the vertical direction. For example, it can connect using a pin joint, a hinge mechanism, etc., for example.

  In the embodiment shown in FIG. 1, the right-side frame body 21b and the left-side frame body 21d forming the vertical direction are each composed of three link members 23, 23, 23, but the number of the link members 23 is as follows. It is not particularly limited and can be arbitrarily increased or decreased. In order to be able to bend and wind the support frame 20 at the same position in the vertical direction while maintaining the parallel state, it is preferable that the right side and the left side frame bodies 21b and 21d are composed of the same number of link members 23.

  Further, if the number of the link members 23 constituting the frame bodies 21b and 21d forming the vertical direction of the support frame 20 is increased so that the frame body 21 is an articulated member such as a roller chain, the support frame In the state of the filter plate 10 having the filter body 11 attached to 20, it can be suitably wound in the vertical direction, and the height of the filter plate 10 can be further reduced.

(Formation of filter plate)
The filter plate 10 can be formed by attaching the filter body 11 to the support frame 20 via an attachment such as a wire 28 or a coil spring 29 and holding the filter body 11 in a tensioned state as described above. it can.

  The attachment of the filter body 11 to the support frame 20 in the embodiment shown in FIG. 1 will be described. The upper side 11a and the left side 11d of the filter body 11 are the frame body 21a and the left side that form the upper side of the support frame 20 corresponding thereto. Is attached to the frame body 21d through a non-stretchable attachment 28 such as a wire or a rod-like member, and the right side 11b and the lower side 11c of the filter body 11 correspond to the support frame 20 corresponding thereto. It is attached to the frame body 21b forming the right side and the frame body 21c forming the lower side via an attachment 29 having elasticity such as a coil spring or rubber (plate rubber).

  In this way, by attaching at least one side to each of the sides 11a and 11c forming the width direction of the filter body 11 and the sides 11b and 11d forming the vertical direction to the support frame 20 via the elastic attachment 29, It can respond suitably to the expansion and contraction in the width direction and the vertical direction of the filter body 11. That is, even when the filter body 11 swells by being immersed in sludge, the filter body 11 can be prevented from being bent and kept in a tension state. In general, when the concentrated sludge laminated on the surface of the filter body 11 is peeled off, compressed air is introduced into the filter body 11 to expand the filter body 11, and this expansion causes the filter body 11 to extend in the longitudinal direction or the width. In the case of contraction in the direction, it is possible to suitably prevent the filter body 11 from being damaged because the attachment tool cannot follow.

  The elastic attachment 29 such as the coil spring may be attached to all the sides 11a to 11d constituting the periphery of the filter body 11, but the attachment having the elasticity to the upper side 11a of the filter body 11 is possible. When the tool 29 is attached, when the filter body 11 is swollen in the sludge or increased in amount by the concentrated sludge adhering to the surface, the attachment tool 29 is unnecessarily extended, and the filter body 11 is filtered in the filter concentration tank 51. It may be difficult to stably hold Therefore, it is preferable that the upper side 11a of the filter body 11 is attached to the support frame 20 using a non-stretchable attachment 28.

  Further, as the non-stretchable attachment tool 28, a turnbuckle or the like whose length can be changed can be used in addition to a wire and a rod-like member having a constant length, and the filter body 11 is attached to the support frame 20. You may adjust the length of this turnbuckle when attaching or after using for a predetermined period.

[How to use the filter plate]
The filter plate 10 according to the embodiment shown in FIG. 1 is configured such that frame bodies 21b and 21d of a support frame 20 in a vertical direction connect a plurality of links 23, 23. Since the filter body 11 supported by the support frame 20 is made of a flexible material, the filter plate 10 is pulled up from the filter concentration tank 51 for replacement, inspection, repair, etc. of the filter plate 10. When the filter plate 10 is accommodated in the filtration and concentration tank 51, the filter plate 10 can be bent or wound in the vertical direction, thereby reducing the space that must be secured above the filtration and concentration tank 51. Is possible.

  Therefore, in the siphon type filtration concentrator 50 using the filter plate 10, even if it is installed in a building, the height under the beam of the building is compared with the conventional siphon type filter concentrator 50. It can be much reduced in comparison.

(2) Filter plate that can be divided in the vertical direction The embodiment shown in FIG. 2 is configured by arranging a plurality of sets of filtration structures 45 each having the filter body 11 attached to the support frame 20 in the vertical direction. The filter plate 10 which connected the said support frames 20 and 20 of the said filtration structure 45 and 45 adjacent to through the detachable connection tool 46 is shown. Since the filter plate 10 is configured so that the filter plate 10 can be divided into the respective filter structures 45 by detachment of the connector 46, the filter plate 10 can be divided in the vertical direction.

  In the present embodiment, unlike the embodiment shown in FIG. 1 described above, the filter body 11 and the support frame 20 do not have to be bent and wound in the vertical direction. As the filter body 11 and the support frame 20 constituting the body 45, filter bodies and support frames made of various known materials and structures as used in the conventional filter plate 65 can be used.

  Therefore, for example, as the filter body 11, the filter body 11 similar to that described in the embodiment shown in FIG. 1 can be used, and the filter body 11 made of a material having no flexibility can also be used. . In FIG. 2, as in FIG. 1, a filter body 11 is used in which a filler is stored in a bag body formed by stitching a filter cloth, and a plurality of vertically long storage portions that divide the bag body in the width direction are formed. In addition, a pumping part 56 which is an end part of the filtrate discharge system 55 is inserted and arranged in the upper part of the filter body 11.

  Further, the support frame 20 to which the filter body 11 is attached may be rigid as a whole and cannot be bent or wound, and in addition to the frame bodies 21a and 21c forming the width direction, the support frame 20 has a vertical direction. The frame bodies 21b and 21d are also composed of a single rigid frame body, and the support frame 20 formed by connecting these frame bodies 21a to 21d to each other can be used.

  As in the embodiment shown in FIG. 1, the attachment for attaching the filter body 11 to the support frame 20 is a non-stretchable attachment 28 such as a wire or a rod-like member, and an expansion / contraction such as a coil spring or rubber. 2 can be used as appropriate, and in FIG. 2, similarly to FIG. 1, the upper side 11a and the left side 11d of the filter body 11 are the upper side of the support frame 20, and the frame 21a is the upper side. The filter body 11 is attached to each of 21d via a non-stretchable attachment 28, and the right side 11b and the lower side 11c of the filter body 11 are stretchable with the frame body 21b forming the right side of the support frame 20 and the frame body 21c forming the lower side. It attaches via the attachment tool 29, and it comprises so that the filter body 11 can hold | maintain a suitable tension state.

  In the embodiment shown in FIG. 2, three sets of filter structures 45 each having the filter body 11 attached to the support frame 20 are arranged in the vertical direction, and the filter structures 45, 45 adjacent to each other in the vertical direction are arranged. Since the support frames 20 and 20 are connected to each other by a detachable connector 46 to form the filter plate 10, the filter plate 10 is divided into three stages for each of the filter structures 45 by detachment of the connector 46. The overall height can be reduced to about one third. In addition, the number of the said filtration structure 45 which comprises the filter plate 10 is not specifically limited, If this filter plate 10 can be divided | segmented to required height, it can increase / decrease arbitrarily. is there.

  When the filter plate 10 is composed of a plurality of sets of filtration structures 45, 45... 45 connected in the vertical direction as in the present embodiment, the filtrate discharge system inserted into the filtration body 11 of each filtration structure 45. It is also possible to separately provide a pipe line communicating with the end of 55 (the pumping liquid part 56), and to flow the filtrate in the filter body 11 to the filtrate discharge system 55 outside the filter concentration tank 51 through the pipe line. At least a part of the support frame 20 of the filter structure 45 may be a conduit 25 that allows the filtrate in the filter 11 to flow, thereby simplifying the structure.

  Further, as described above, when at least a part of the support frame 20 is used as the conduit 25 through which the filtrate can flow, the support frames 20 and 20 of the filtration structures 45 and 45 adjacent in the vertical direction are connected. It is preferable that the connector 46 is a pipe joint, and the pipe lines 25 and 25 in the support frames 20 and 20 are communicated with each other through the pipe joint 46.

  As a result, the filtrate in the filter body 11 of the lower filter structure 45 in one filter plate 10 is sequentially joined with the filtrate in the filter body 11 of the upper filter structure 45 to form one filter plate 10. It can be set as the structure which makes the filtrate in the filter body 11,11 ... 11 of each filter structure 45,45 ... 45 flow to the upper direction of this filter board 10 collectively. Therefore, it is not necessary to separately provide a filtrate conduit to reach the filtrate discharge system 55 outside the filtration concentration tank 51 for each individual filtration structure 45, 45... 45, and by providing the conduit separately, the depth of the filter plate 10 can be increased. Etc. can be prevented, and a desired number of filter plates 10 can be arranged in parallel in the filter concentration tank 51.

  In the embodiment shown in FIG. 2, at least a part of the support frame 20 constituting the filtration structure 45 is formed with a conduit 25, and an end portion of the filtrate discharge system 55 inserted into the filtration body 11. The (pump portion 56) is communicated with the pipe line 25 of the support frame 20, and the pipe lines 25 and 25 of the support frames 20 and 20 adjacent to each other in the vertical direction are connected via a pipe joint 46 serving as a connector. The filtrate flowing in the pipe line 25 of the support frame 20 can flow into the pipe line 25 of the upper support frame 20 via the pipe joint 46. Accordingly, the pipe 25 and the pipe joint 46 in the support frame 20 of the filtration structure 45 function as a part of the filtrate discharge system 55 (filtrate collecting pipe 57).

  The pipe line 25 of the support frame 20 can be formed by using a pipe as the frame body 21 forming the support frame 20.

  The support frame 20 may be formed with pipes 25 in the entire support frame 20 using all the frame bodies 21 (21 a to 21 d) constituting the support frame 20 as pipes, but is attached to the support frame 20. When the filtrate in the filter body 11 and the filtration structure 45 are provided below the support frame 20, the filtrate in the pipe 25 of the support frame 20 of the filtration structure 45 flows upward to the support frame 20. The entire support frame 20 does not necessarily need to be the conduit 25.

  For example, in FIG. 2, the right half of the support frame 20 from the lower pipe joint 46 to the upper pipe joint 46 is a pipe line 25, and the filter plate 10 is passed through the pipe line 25 and the pipe joint 46. The filtrate can be flowed as indicated by an arrow from the support frame 20 of the lower filtration structure 45 formed to the support frame 20 of the upper filtration structure 45. In addition, the scooping portion 56 inserted into the filter body 11 of the filtration structure 45 attached to the support frame 20 is communicated with the pipe line 25 of the support frame 20, and the filtrate in the filter body 11 is connected to the lower pipe joint. It is configured to flow together with the filtrate flowing from 46 to the upper pipe joint 46.

  Since the lowermost support frame 20 does not have the support frame 20 that is connected to the lower side, the pumping portion 56 in the filter body 11 attached to the support frame 20 is communicated with the support frame 20. It is only necessary that at least a portion from the position to the pipe joint 46 provided at the upper side is configured as the pipe line 25, and the right half is not used as the pipe line 25 like the support frame 20 connected to the upper side. Good.

  In addition, a filtrate collecting pipe 57 of a filtrate discharge system 55 that discharges the filtrate flowing in the pipe 25 of the support frame 20 to the outside of the filtration concentration tank 51 is communicated with the uppermost support frame 20 through a pipe joint. As described above, a plurality of the filtrate collecting pipes 57 are collectively connected to the header 58, and the filtrate is discharged from the filtrate discharge pipe 59 through the header 58.

  In the embodiment shown in FIG. 2, the communication between the inside of the filter body 11 of the filtration structure 45 and the pipe 25 of the support frame 20 is caused by the pumping portion 56 inserted into the filter body 11. Although it is only one place connected with the pipe line 25, if the filtrate in the filter body 11 attached to this support frame can be made to flow into the pipe line 25 of the said support frame 20, it will not be limited to this structure, For example, the filter body 11 and the support frame 20 (the pipeline 25) may be communicated at a plurality of locations.

  As the pipe joint 46 for connecting the support frames 20 and 20 of the filtration structures 45 and 45 adjacent in the vertical direction, a “screw joint” in which a thread is cut at the end of the pipe, a flange is attached to the pipe end, and this is a bolt. Various types of known pipe joints 46 such as “flange joints” connected with nuts and nuts can be used, and the pipe lines 25 of the adjacent support frames 20 can be connected to each other and the connection state can be released (released) freely. The configuration is not limited as long as it is a pipe joint 46 that can be performed, but as an example, “coupler made by Nitto Kohki Co., Ltd., which is a plug-in pipe joint 46 composed of a plug (male side) and a socket (female side). "In more detail, an" auto coupler "can be used.

[How to use the filter plate]
According to the filter plate 10 of the embodiment shown in FIG. 2, a plurality of sets of filter structures 45 each having the filter body 11 attached to the support frame 20 are arranged in the vertical direction, and the filter structures adjacent to each other vertically. Since the support frames 20 and 20 of 45 and 45 are connected via a detachable connector 46, the filter plate 10 is attached to the filtration and concentration tank 51 for replacement, inspection, repair or the like of the filter plate 10. The filter plate 10 can be divided into the filter structures 45 in the vertical direction by detaching the connector 46 when the filter plate 10 is pulled up or placed in the filter concentration tank 51. Can be reduced.

  Therefore, in the siphon type filtration concentration apparatus 50 using the filtration plate 10, even when this is installed in a building, the space that must be secured above the filtration concentration tank 51 is reduced. As compared with the conventional siphon type filtration concentration device 50, the under-beam height of the building can be greatly reduced.

  Further, when forming the filter plate 10, at least a part of the support frame 20 of each filter structure 45 is formed with the conduit 25 and the support frames 20, 20 of the filter structures 45, 45 adjacent to each other are connected to each other. The connecting tool 46 is a pipe joint, the pipe lines 25 and 25 of the support frames 20 and 20 are communicated with each other through the pipe joint 46, and the pipe line 25 and the connector (pipe joint) 46 of the support frame 20 are filtrated. By making it a part of the discharge system 55, the filtrate in the filter body 11 of the lower filter structure 45 is sequentially joined with the filtrate in the filter body 11 of the upper filter structure 45, and the filter plate 10 is moved upward. It is possible to flow suitably, and it is not necessary to separately provide a pipe 25 for discharging the filtrate permeated into the filter body 11 for each filter structure 45, and the depth required for one filter plate 10 is increased. Can be prevented. Therefore, a desired number of filter plates 10 can be arranged in parallel in the depth direction in the filter concentration tank 51.

The figure which showed one Embodiment of the filtration board 10 of the siphon type | formula filtration concentration apparatus 50 of this invention. The figure which showed other embodiment of the filter plate 10 of the siphon type | formula filtration concentration apparatus 50 of this invention. The figure which shows the conventional siphon type | formula filtration concentration apparatus 50. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Filter plate 11 Filter body 11a Upper side 11b Right side 11c Lower side 11d Left side 16 Eyelet 17 Suture line 20 Support frame 21 Frame 21a Upper side 21b Right side 21c Lower side 21d Left side 23 Link member 24 Link connection part 25 Pipe line 28 Non-stretchable attachment Tool (wire)
29 Stretchable attachment (coil spring)
45 Filtration structure 46 Connector (pipe joint)
50 Siphon type filtration concentration device 51 Filtration concentration tank 53 Conduit 55 Filtrate discharge system (siphon)
56 Pumping section 57 Filtrate collecting pipe 58 Header 59 Filtrate discharge pipe 61 Air vent valve 62 Filtrate discharge valve 63 Trap 65 Filtration plate (conventional)
66 Filter body (conventional)
67 Support frame (conventional)

Claims (5)

A filter plate of a siphon type filter concentration device, comprising a filter body and a support frame to which the filter body is attached, and housed in a filter concentration tank for filling a processing object,
A filtration plate of a siphon type filtration concentration apparatus, wherein the support frame is provided so as to be divided in a direction perpendicular to the support frame.   2. The siphon according to claim 1, wherein a frame body forming a vertical direction of the support frame is constituted by a link member divided into a plurality of parts in the vertical direction, and the adjacent link members are connected to each other so as to be rotatable. Filter plate of the filter filtration concentrator.   The filter plate is formed by arranging a plurality of filter structures each having the filter body attached to the support frame in a vertical direction, and the support frames of the adjacent filter structures are connected via a detachable connector. The filter plate of the siphon type filtration concentration apparatus according to claim 1, wherein the filtration plates are connected.   4. The filter plate of the siphon type filtration concentrator according to claim 3, wherein at least a part of the support frame of the filter structure is a conduit that allows the filtrate in the filter body to flow. 5. The filter plate of the siphon type filtration concentrator according to claim 4, wherein the coupling tool is a pipe joint, and a pipe line in the support frame of the adjacent filtration structure is connected through the pipe joint.

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