JP6435494B2 - Sludge scraping device - Google Patents

Description

  The present invention relates to a sludge scraping device that is provided in a sedimentation basin in which sludge contained in received water settles at the bottom of a pond and scrapes the sludge settled on the bottom of the pond.

  2. Description of the Related Art A so-called reciprocating sludge scraping device is known which includes a scraping member that reciprocates along a guide rail provided at the bottom of a sedimentation basin. A plurality of scraping members are arranged at intervals in the reciprocating direction. As the plurality of scraping members reciprocate, the sludge that has settled on the bottom of the pond is scraped in steps in the reciprocating direction. In the sludge scraping device, for the purpose of reducing friction with the guide rail, a sliding contact member is provided between the guide rail and the scraping member, which is in sliding contact with the guide rail when the scraping member reciprocates. is there. In some of the sludge scraping devices, the sliding contact member also functions as a connecting member for connecting the scraping members. The sliding contact member that also functions as a connecting member extends in the reciprocating direction across the plurality of scraping members, and connects the scraping members.

  In the sludge scraping device provided with the sliding contact member, the sliding contact member may be worn while the sliding contact member is in sliding contact with the guide rail. When the sliding contact member wears, the strength decreases, and a part of the scraping member may be broken. In the sludge scraping device in which the sliding contact member also functions as a connecting member, there is a problem that if the sliding contact member is partially broken, a connecting function for connecting the scraping members cannot be obtained.

  In order to solve this problem, a sludge scraping device in which a sliding contact member and a connecting member are configured as separate members has been proposed (for example, see Patent Document 1). The sludge scraping device described in Patent Document 1 includes a scraping member, a connecting member disposed closer to the pond bottom than the scraping member, and a sliding member disposed between the connecting member and the guide rail. . In this sludge scraping device, even if the sliding contact member is worn and broken, the connecting function can be maintained unless the connecting member is broken.

JP 2010-58005 A

  However, the guide rail and the sliding contact member may be deformed in a wavy shape in the reciprocating direction. If it is deformed in a wavy shape, only a part of the sliding contact member may be in sliding contact with the guide rail, and the other part of the sliding contact member may be lifted from the guide rail. If only a part of the sliding contact member is in sliding contact with the guide rail, uneven wear may occur in which the part is worn intensively.

  An object of the present invention is to provide a sludge scraping device capable of reducing the occurrence of uneven wear.

The sludge scraping device of the present invention that solves the above object is provided in a sedimentation basin in which sludge contained in received water settles at the bottom of the pond,
A first guide rail provided on one end side of the pond bottom in the pond width direction;
A second guide rail provided on the other end side of the pond bottom in the pond width direction;
It extends in the pond width direction, one end side in the pond width direction moves on the first guide rail along the first guide rail, and the other end side in the pond width direction moves on the second guide rail. A plurality of scraping members arranged at intervals in the moving direction, scraping the sludge settled on the pond bottom with a scraping surface by moving along the rail,
A first connecting member extending in a moving direction of the scraping member above the scraping surface and connecting the plurality of scraping members on the first guide rail;
A second connecting member extending in a moving direction of the scraping member above the scraping surface and connecting the plurality of scraping members on the second guide rail;
A plate-like first sliding contact member disposed for each scraping member between each of the plurality of scraping members and the first guide rail;
A plate-like second sliding contact member disposed for each scraping member between each of the plurality of scraping members and the second guide rail;
In the scraping member, the scraping surface is located between the first connecting member and the first guide rail on the first sliding contact member, and the scraping surface on the second sliding contact member. Is located between the second connecting member and the second guide rail.

Further, in the sludge scraping device of the present invention, a driving force generator for generating a driving force for reciprocating the scraping member;
A rod member extending in the reciprocating direction of the scraping member at the center of the pond width direction, and transmitting the driving force to the scraping member;
A coupling member that couples the rod member and the first coupling member and also couples the rod member and the second coupling member may be provided.

  According to the sludge scraping device of the present invention, occurrence of uneven wear can be reduced.

It is a sectional side view of the sedimentation basin in which the sludge scraping apparatus which is one Embodiment of this invention was installed. It is the top view which looked at the sedimentation basin shown in FIG. 1 from upper direction. (A) is AA sectional drawing of FIG. 2, (b) is DD sectional drawing of Fig.3 (a). (A) is CC sectional drawing of FIG. 2, (b) is EE sectional drawing of (a). (A) is a figure which shows the 1st modification of a sludge scraping apparatus, (b) is FF sectional drawing of (a). (A) is a figure which shows the 2nd modification of a sludge scraping apparatus, (b) is GG sectional drawing of (a). (A) is a figure which shows the 3rd modification of a sludge scraping apparatus, (b) is HH sectional drawing of (a).

  Embodiments of the present invention will be described below with reference to the drawings. The sludge scraping apparatus according to the present embodiment is a so-called reciprocating sludge scraping apparatus including a scraping member that reciprocates along a guide rail provided at the bottom of a sedimentation basin.

  FIG. 1 is a side sectional view of a sedimentation basin in which a sludge scraping apparatus according to an embodiment of the present invention is installed. In FIG. 1, the central portion in the longitudinal direction of the settling basin 1 is omitted.

  A sedimentation basin 1 shown in FIG. 1 is a pond having a substantially rectangular shape in plan view, surrounded by an upstream wall 1a, a downstream wall 1c, and a pair of side walls 1d. The sedimentation basin 1 receives sewage such as sewage and rainwater from a water conduit 1e on one end side in the longitudinal direction (left side in FIG. 1), and precipitates sludge contained in the received sewage on the pond bottom 1f. Drain from the right side in FIG. Hereinafter, the left side in FIG. 1 may be referred to as the upstream side, and the right side in FIG. 1 may be referred to as the downstream side. Moreover, the direction orthogonal to the paper surface in FIG. 1 may be referred to as a pond width direction. In addition, the pond bottom 1f of the settling basin 1 has an inclined surface that is slightly inclined so that the water depth of the settling basin 1 increases toward the upstream side.

  As shown in FIG. 1, the sedimentation basin 1 is provided with a sludge scraping device 10 and a sludge pit 50 according to this embodiment. The sludge pit 50 is provided in the upstream portion of the sedimentation basin 1. The sludge attracted to the sludge pit 50 is discharged outside the sedimentation basin 1 by a sludge pump (not shown).

  The sludge scraping device 10 of this embodiment includes a guide rail 11 fixed to the pond bottom 1f, a plurality of scraping members 12, a connecting member 13 (see FIG. 2) connecting the plurality of scraping members 12, and a scraping member 12. A plurality of sliding members 14 (see FIG. 3) arranged for each of them and a drive mechanism 15 for reciprocating the scraping member 12 are provided.

  The drive mechanism 15 is attached to the lower end of the reciprocating rod 153, the motor 151, the converter 152 that converts the rotational driving force of the motor 151 into a reciprocating operation, the reciprocating rod 153 having one end fixed to the output shaft of the converter 152. A triangular link 154, a link support 155 that rotatably supports the triangular link 154, a pull rod 156, and a connecting plate 157 that connects the triangular link 154 and the pull rod 156.

  The motor 151 is disposed on the ground. The motor 151 is a motor that can rotate in both directions. As the motor 151 rotates in one direction, the reciprocating rod 153 moves forward in the direction toward the pond bottom. Further, as the motor 151 rotates in the other direction, the reciprocating rod 153 moves backward in a direction away from the pond bottom. When the reciprocating rod 153 moves back and forth, the triangular link 154 swings in the direction of arrow P. When the triangular link 154 swings, the pull rod 156 connected to the triangular link 154 by the connecting plate 157 reciprocates upstream and downstream along the guide rail 11 fixed to the pond bottom 1f. A plurality of scraping members 12 are attached to the pull rod 156. As the pull rod 156 reciprocates, each scraping member 12 reciprocates upstream and downstream along the guide rail 11. That is, the rotation of the motor 151 is converted into the reciprocating motion of the scraping member 12 by the converter 152, the reciprocating rod 153, the triangular link 154, and the pull rod 156.

  The scraping members 12 are arranged at equal or substantially equal intervals in the reciprocating direction. Each scraping member 12 extends in the pond width direction of the sedimentation basin 1. The stroke of the reciprocating movement of the scraping member 12 is set to a distance greater than or equal to the interval in the reciprocating direction in which the scraping member 12 is disposed. The sludge that has settled in the settling basin 1 is scraped step by step toward the sludge pit 50 side by the reciprocating movement of the scraping member 12 and sent to the sludge pit 50.

  FIG. 2 is a plan view of the settling pond shown in FIG. 1 as viewed from above. In FIG. 2, members constituting the driving mechanism 15 other than the pull rod 156 and the connecting plate 157 are not shown. Further, the center portion in the longitudinal direction of the sedimentation tank 1 is omitted.

  The guide rail 11 is made of ultra high molecular weight polyethylene that extends in the longitudinal direction of the settling basin 1. In this embodiment, as shown in FIG. 2, a total of three guide rails 11 at the center in the pond width direction and at both ends in the pond width direction are fixed to the pond bottom 1 f of the settling basin 1. The pull rod 156 is disposed at the center in the pond width direction and extends in the reciprocating direction of the scraping member 12. Moreover, the connection member 13 is arrange | positioned 1 each in each pond width direction both ends. The connecting member 13 is a flat plate having a predetermined rigidity. Each of the connecting members 13 extends over the entire length in the reciprocating direction in which the plurality of scraping members 12 are arranged, and connects all of the plurality of scraping members 12. Since each raking member 12 is connected by the connecting member 13 at both end portions in the pond width direction, the raking members 12 are integrated at both side portions in the pond width direction, thereby increasing the rigidity of the raking member 12 as a whole. By carrying out like this, it can suppress that the pond width direction both ends side part of each raking member 12 bends in a reciprocating movement direction, or each raking member 12 inclines with respect to a pond width direction. If the scraping member 12 bends or tilts, there is a possibility that sludge remains on the end side in the pond width direction. The pull rod 156 and the connecting member 13 are coupled by a triangular arm 21, and when the pull rod 156 reciprocates, the two connecting members 13 also reciprocate.

  3A is a cross-sectional view taken along the line AA in FIG. 2, and FIG. 3B is a cross-sectional view taken along the line DD in FIG. In addition, since the BB cross section of FIG. 2 is the same structure as an AA cross section, description is abbreviate | omitted.

  As shown in FIG. 3A, the scraping member 12 is provided on the upstream side, and the sludge settled on the pond bottom 1f is scraped to the sludge pit 50 side, and the slope 12 is provided on the downstream side to lift the sludge. Surface 12b. The scraping surface 12a is formed in an arc shape that is dented downstream. When the scraping member 12 moves upstream, the scraping surface 12a attracts sludge to the sludge pit 50 side. On the other hand, the inclined surface 12b is inclined toward the pond bottom 1f side so that the scraping member 12 tapers toward the downstream side. When the scraping member 12 moves downstream, most of the sludge can stay at the position scraped by the scraping surface 12a by passing the sludge over the inclined surface 12b. The scraping member 12 is made of a bent stainless steel plate.

  Each of the two connecting members 13 is disposed above the scraping member 12. The connecting member 13 has a function of transmitting the driving force from the driving mechanism 15 to the scraping member 12 via the pull rod 156 and the triangular arm 21 shown in FIG. A plurality of mounting plates 131 are welded to the connecting member 13 at a predetermined interval. The connecting member 13 and the mounting plate 131 are made of a stainless steel plate. The scraping member 12 is fixed to the connecting member 13 via the mounting plate 131 by welding a part of the inclined surface 12 b to the mounting plate 131.

  A plate 121 is welded to the pond bottom side portion of the scraping member 12. A sliding contact member 14 that is rectangular in the longitudinal direction of the sedimentation basin 1 as viewed from above the sedimentation basin 1 is detachably attached to the plate 121 by two male screws 31. The sliding contact member 14 is disposed between the scraping member 12 and the guide rail 11 for each scraping member 12. The sliding contact member 14 is made of ultrahigh molecular weight polyethylene, in which the length M of the scraping member 12 in the reciprocating direction is equal to or less than the distance L between the scraping surfaces 12a of the scraping members 12 adjacent in the reciprocating direction. belongs to. As shown in FIG. 3A, in the present embodiment, the length M of the sliding contact member 14 in the reciprocating direction is about 1/4 of the distance L between the scraping surfaces 12a.

  The sliding contact member 14 may be formed of other resin material such as nylon, or may be formed of a metal material. However, if it is made of a resin material, the weight can be reduced, and the work efficiency of the replacement operation of the sliding contact member 14 described later can be increased. Moreover, it is preferable that the sliding contact member 14 is formed with the material whose abrasion resistance is the same as that of the material which comprises the guide rail 11, or inferior to it. In particular, it is preferable that the sliding contact member 14 is formed of a material having poor wear resistance against inorganic components such as sand contained in the sludge. By doing so, it is possible to suppress the guide rail 11 from being worn by sliding contact. In addition, wear resistance to inorganic substances such as sand contained in sludge is, in descending order, ultrahigh molecular weight polyethylene, nylon, tetrafluoroethylene, carbon steel, stainless steel, high density polyethylene, polypropylene, polyacetal, and phenol laminate. . In the case of a material having a low hardness, an inorganic substance such as sand may bite into the surface of a member made of the material, and the member is protected by the bittered inorganic substance and may be difficult to wear. For this reason, even materials with low hardness have high wear resistance against inorganic substances such as sand. For example, in a sedimentation basin 1 in which a large amount of inorganic material such as sand may flow in, such as a sedimentation basin 1 that treats sewage in a combined sewer system, a sliding contact member 14 formed of a material that is easily engulfed by inorganic material such as sand or the like It is preferable to use the guide rail 11. On the contrary, in the sedimentation basin 1 where the possibility of the inflow of inorganic substances such as sand is low, such as the sedimentation basin 1 that treats the sewage of the shunt sewer, the sliding contact member 14 and the guide rail 11 are low in wear resistance. It may be made of an inexpensive material. In addition, the sliding contact member 14 is in contact with the guide rail 11 in the entire length in the longitudinal direction, whereas the guide rail 11 is in a portion between the sliding contact members 14 adjacent in the reciprocating movement direction. And no contact. In this embodiment, the guide rail 11 is in contact with the sliding contact member 14 for about ¼ of the distance L, but the remaining about ¾ is not in contact. For this reason, even when the wear resistance of the material of the guide rail 11 and the material of the sliding contact member 14 is the same, the guide rail 11 is less likely to wear than the sliding contact member 14.

  In this embodiment, a resin male screw 31 is used. Although the metal male screw 31 may be used, when the metal male screw 31 is used, when the sliding contact member 14 is worn and its thickness is reduced, the tip of the male screw 31 is a guide rail. There is a possibility that the guide rail 11 may be damaged by contact with the guide 11. By using the resin male screw 31, even if the tip of the male screw 31 contacts the guide rail 11, the possibility that the guide rail 11 is damaged can be reduced. In order to further reduce the possibility of the guide rail 11 being damaged, the male screw 31 is preferably formed of a material that is the same as or inferior to the wear resistance of the material constituting the guide rail 11.

  4A is a CC cross-sectional view of FIG. 2, and FIG. 4B is an EE cross-sectional view of FIG. 4A.

  The guide rail 11, the scraping member 12, the sliding contact member 14, the plate 121, and the mounting plate 131 shown in FIG. 4 are the same as those described with reference to FIG. The description may be omitted with the symbol. As shown in FIG. 4, the pull rod 156 is made of stainless steel having a hollow quadrangular prism shape extending in the longitudinal direction of the sedimentation basin 1. A plurality of mounting plates 131 are welded to the pull rod 156 at a predetermined interval. The scraping member 12 is fixed to the mounting plate 131 by welding a part of the inclined surface 12 b to the mounting plate 131.

  Next, replacement work of the sliding contact member 14 will be described. When the sliding contact member 14 is worn, the two male screws 31 that attach the worn sliding contact member 14 to the plate 121 are removed, and the sliding contact member 14 is removed from the plate 121. Thereafter, the replacement operation is completed by attaching a new sliding contact member 14 to the plate 121 with the male screw 31.

  As described above, according to the sludge scraping device 10 of the present embodiment, the sliding contact member 14 has the scraping surface of the scraping member 12 whose length M in the reciprocating direction of the scraping member 12 is adjacent to the reciprocating direction. Since it is the length below the distance L between 12a, the sliding contact member 14 which is replacement parts becomes cheap. Moreover, since the sliding contact member 14 can be made small and light, workability | operativity of exchange work can be improved. Further, since the sliding contact member 14 has a short length M in the reciprocating direction of the scraping member 12, it is possible to reduce the possibility that replacement is required even for a portion that is not worn. Further, since all the connecting members 13 are arranged above the scraping member 12, compared to the case where the connecting member 13 is disposed between the scraping member 12 and the sliding contact member 14, the thickness of the connecting member 13 is the same. The scraping member 12 can be disposed close to the pond bottom 1f. By arranging the scraping member 12 in the vicinity of the pond bottom 1f, it is possible to reduce the residue of the sludge settled on the pond bottom 1f. Further, since the connecting member 13 is disposed above the scraping member 12, the possibility that the connecting member 13 contacts the sludge settled on the pond bottom 1f is reduced, and the connecting member 13 is worn by the sludge. The fear can be reduced. Moreover, since the sliding contact member 14 is formed of a lightweight resin material, the replacement work can be easily performed. Further, the guide rail 11 is deformed in a wavy shape in the reciprocating direction of the scraping member 12, and unevenness with a pitch longer than the distance L between the scraping surfaces 12 a is generated on the sliding contact surface with which the sliding contact member 14 is slidably contacted. Sometimes. In the sludge scraping device 10 of this embodiment, since the sliding contact member 14 is arranged for each scraping member 12, even in that case, each scraping member is formed into an uneven shape on the sliding contact surface of the guide rail 11 by the weight of the scraping member 12. 12 follows to some extent, and the scraping member 12 can be prevented from separating from the pond bottom 1f. Further, when the sliding contact member 14 extends across the plurality of scraping members 12 in the reciprocating direction of the scraping member 12, the total weight of the plurality of scraping members 12 causes the sliding contact member 14 to move to the guide rail 11. There is a possibility that extreme uneven wear may occur in a part of the sliding contact member 14 slidably contacting the portion where the convex portion of the guide rail 11 is present, acting as a pressing load. In this embodiment, since the sliding contact member 14 is disposed for each scraping member 12, the weight of each scraping member 12 presses the individual sliding contact member 14 disposed for each scraping member 12 against the guide rail 11. Acts as a load, and extreme uneven wear is unlikely to occur.

  Then, the modification of this embodiment is demonstrated. In the following description, components having the same names as the names of the components described so far may be denoted by the same reference numerals as used so far, and description thereof may be omitted.

  Fig.5 (a) is a figure which shows the 1st modification of a sludge scraping apparatus, FIG.5 (b) is FF sectional drawing of Fig.5 (a).

  In the first modification, as compared with the previous embodiment, the shape of the connecting member 13 and the mounting plate 131, the mounting structure of the scraping member 12 and the mounting plate 131, and the sliding contact member 14 are mounted on the mounting plate 131. Is different. As shown in FIG.5 (b), the connection member 13 of this modification is formed in the L-shape by which the cross-sectional shape reversed right and left. As shown in FIG. 5A, the scraping member 12 is detachably attached to the attachment plate 131 by inserting the tip end portion of the bolt 32. The bolt 32 is fixed to the mounting plate 131 by sandwiching the mounting plate 131 with the nut 33. The sliding contact member 14 is detachably attached to the attachment plate 131 with a male screw 31. By attaching the slidable contact member 14 to the attachment plate 131, the plate 121 is omitted from the previous embodiment. The mounting plate 131 is fixed to the connecting member 13 by welding. In the first modification, in addition to the effects of the previous embodiment, there is an effect that the scraping member 12 and the sliding contact member 14 can be transported from the factory to the settling basin 1 in a disassembled state. Further, there is an effect that the scraping member 12 and the sliding contact member 14 can be easily assembled.

  Fig.6 (a) is a figure which shows the 2nd modification of a sludge scraping apparatus, and FIG.6 (b) is GG sectional drawing of Fig.6 (a).

  In the second modified example, the material of the sliding contact member 14 and the mounting structure of the mounting plate 131 and the sliding contact member 14 are different from those in the first modified example. The slidable contact member 14 of the second modification is formed of a wear-resistant plate in which a hardened layer made of a non-wearing material such as nickel chrome or tungsten carbide is provided on the surface of a stainless steel plate. Yes. The sliding contact member 14 is attached to the mounting plate 131 by being partially tapped. The sliding contact member 14 can be detached from the mounting plate 131 by peeling off the tap welded portion. In the second modification, in addition to the effects of the first modification, there is an effect that the male screw 31 can be omitted. Further, there is an effect that when the sliding contact member 14 is worn, there is no possibility that the tip of the male screw 31 contacts the guide rail 11 and damages the guide rail 11. In addition, in the vicinity of the connecting plate 157 to which the triangular link 154 shown in FIG. 1 is connected, the load that presses the scraping member 12 toward the pond bottom 1f tends to increase. Conversely, at a position away from the connecting plate 157, the load that presses the scraping member 12 toward the pond bottom 1f tends to be weak. In the portion where the load is strong, the sliding contact member 14 is easily worn out faster than the portion where the load is weak. A highly wear-resistant member such as a wear-resistant plate is used for the slide-contact member 14 arranged at a position where it is easily worn, and the slide-contact member 14 arranged at a position where it is difficult to wear is more wear-resistant than the wear-resistant plate. For example, a stainless member having no hardened layer may be used.

  Fig.7 (a) is a figure which shows the 3rd modification of a sludge scraping apparatus, FIG.7 (b) is HH sectional drawing of Fig.7 (a).

  In the third modified example, the shape of the mounting plate 131, the mounting structure of the mounting plate 131 and the scraping member 12, and the mounting structure of the mounting plate 131 and the connecting member 13 are different from those of the second modified example. As shown in FIG. 7B, the mounting plate 131 of this modification is configured by an L-shaped plate material. As shown in FIG. 7A, the mounting plate 131 is formed with a notch 131 a through which the scraping member 12 is inserted. The scraping member 12 is fixed to the mounting plate 131 by welding a part of the inclined surface 12 b to the mounting plate 131. The attachment plate 131 is attached to the connecting member 13 by being partially tap welded. In the third modified example, the width of the mounting plate 131 in the pond width direction is the same as the thickness of the mounting plate 131 in comparison with the second modified example. When moving, there is an effect that the amount of sludge pushed back in the direction opposite to the scraping direction by the mounting plate 131 can be minimized.

  The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope described in the claims. For example, in the present embodiment, three guide rails 11 are provided, but any number of guide rails 11 may be provided. In the present embodiment, two connecting members 13 are provided, but any number of connecting members 13 may be used. In the present embodiment, the scraping member 12 is fixed to the connecting member 13 via the mounting plate 131, but the scraping member 12 may be directly fixed to the connecting member 13. In addition, even if it is a structural requirement contained only in each description of each modification demonstrated above, you may apply the structural requirement to another modification.

The sludge scraping device described so far is provided in a sedimentation basin where the sludge contained in the received water settles at the bottom of the pond, and in the sludge scraping device that scrapes the sludge settled at the bottom of the pond,
A guide rail provided at the bottom of the pond;
By reciprocating along the guide rail, a plurality of scraping members that scrape the sludge settled on the pond bottom with a scraping surface;
A plurality of sliding members arranged for each scraping member between each of the plurality of scraping members and the guide rail;
The scraping member is arranged with an interval in the reciprocating direction of the scraping member,
The sliding contact member is a plate-like member whose length in the reciprocating direction is equal to or shorter than the distance between the scraping surfaces of the scraping members adjacent in the reciprocating direction.

  The sliding member of the conventional sludge scraping device extends in the reciprocating direction of the scraping member across the plurality of scraping members. For this reason, when exchanging the sliding contact member with uneven wear with a new sliding contact member (hereinafter sometimes referred to as a replacement part), not only the portion with uneven wear but also the unworn portion There is a problem that replacement parts are required and replacement members are expensive. In addition, there is a problem that replacement parts become large and heavy, and replacement work becomes complicated.

  According to the sludge scraping device, since the length of the sliding contact member is equal to or shorter than the above-described distance, the replacement part for replacing the sliding contact member becomes inexpensive and the workability of the replacement work can be improved.

Further, in the sludge scraping device, the plurality of scraping members extend in the direction of reciprocating movement, and include a connecting member that connects the scraping members,
The connecting member may be disposed above the scraping member.

  The scraping member can be arranged as close to the pond bottom as the thickness of the connecting member, and sludge residue can be further reduced. Moreover, it can suppress that a connection member wears by the sludge settled in the pond bottom part.

  The connecting member may extend over the entire length in the reciprocating direction in which the plurality of scraping members are arranged.

  Moreover, the said sludge scraping apparatus WHEREIN: It is preferable that the said connection member is provided in each pond width direction both ends side part.

  Since each scraping member is connected by the connecting member at both ends in the pond width direction, it is possible to suppress the scraping member from being bent in the reciprocating direction.

  In the following, including what has been described so far.

(Appendix 1)
The other sludge squeezing device is provided in a sedimentation basin in which sludge contained in the received water settles at the bottom of the pond, and the sludge squeezing device scrapes the sludge that has settled at the bottom of the pond.
A plurality of scraping members scraped by reciprocating sludge settled on the pond bottom,
A driving force generator for generating a driving force for reciprocating the scraping member;
A rod member extending in the reciprocating direction of the scraping member at the center of the pond width direction, and transmitting the driving force to the scraping member;
One is arranged at each of the both ends of the pond width direction, each is a flat plate having a predetermined rigidity, extends over the entire length in the reciprocating direction in which the plurality of scraping members are arranged, A connecting member connecting all the scraping members;
A connecting member comprising a triangular arm for connecting the rod member and the connecting member;
The rod member, the connecting member, and the coupling member are arranged above the scraping member.

(Appendix 2)
In the sludge collecting device that is provided in a sedimentation basin in which the sludge contained in the received water settles at the bottom of the pond,
A plurality of scraping members scraped by reciprocating sludge settled on the pond bottom,
A driving force generator for generating a driving force for reciprocating the scraping member;
A rod member extending in the reciprocating direction of the scraping member at the center of the pond width direction, and transmitting the driving force to the scraping member;
A connecting plate that receives the driving force from one end side, connects the other end side to the rod member, and transmits the driving force to the rod member from an obliquely upward direction;
One is arranged at each of the both ends of the pond width direction, each is a flat plate having a predetermined rigidity, extends over the entire length in the reciprocating direction in which the plurality of scraping members are arranged, A connecting member connecting all the scraping members;
A connecting member comprising a triangular arm for connecting the rod member and the connecting member;
The scraping member is provided in the outward direction with respect to the sludge settled on the pond bottom, and the return surface side of the scraping surface, and the sludge scraped by the scraping surface is provided in the return direction. And has an inclined surface to overcome when moving to
The rod member, the connecting member, and the coupling member are disposed above the scraping member,
The sludge scraping device, wherein the coupling member extends from the vicinity of a portion of the rod member where the coupling plate is coupled to the forward direction side.

  Here, the driving force generator may include a motor, and the rod member may be a pull rod to which the plurality of scraping members are attached.

Further, the scraping member extends in the pond width direction,
The connecting member extends in the reciprocating direction at the one end side in the pond width direction from the rod member, and the reciprocating direction at the other end side in the pond width direction from the rod member. Having a second connecting member extending;
The coupling member may couple three members, the rod member, the first coupling member, and the second coupling member.

  The coupling member includes an arm extending obliquely with respect to the rod member and an arm extending in a direction perpendicular to the rod member, the rod member, the first connecting member, and The three members of the second connecting member may be combined in a triangular shape.

DESCRIPTION OF SYMBOLS 1 Sedimentation basin 1f Bottom of pond 10 Sludge scraping device 11 Guide rail 12 Scraping member 12a Scraping surface 13 Connection member 14 Sliding member 15 Drive mechanism L Distance between scraping surfaces M Length of sliding member

Claims (2)

In the sludge collecting device that is provided in a sedimentation basin in which the sludge contained in the received water settles at the bottom of the pond,
A first guide rail provided on one end side of the pond bottom in the pond width direction;
A second guide rail provided on the other end side of the pond bottom in the pond width direction;
It extends in the pond width direction, one end side in the pond width direction moves on the first guide rail along the first guide rail, and the other end side in the pond width direction moves on the second guide rail. A plurality of scraping members arranged at intervals in the moving direction, scraping the sludge settled on the pond bottom with a scraping surface by moving along the rail,
A first connecting member extending in a moving direction of the scraping member above the scraping surface and connecting the plurality of scraping members on the first guide rail;
A second connecting member extending in a moving direction of the scraping member above the scraping surface and connecting the plurality of scraping members on the second guide rail;
A plate-like first sliding contact member disposed for each scraping member between each of the plurality of scraping members and the first guide rail;
A plate-like second sliding contact member disposed for each scraping member between each of the plurality of scraping members and the second guide rail;
In the scraping member, the scraping surface is located between the first connecting member and the first guide rail on the first sliding contact member, and the scraping surface on the second sliding contact member. Is located between the second connecting member and the second guide rail. A driving force generator for generating a driving force for reciprocating the scraping member;
A rod member extending in the reciprocating direction of the scraping member at the center of the pond width direction, and transmitting the driving force to the scraping member;
2. The sludge scraping apparatus according to claim 1, further comprising a coupling member that couples the rod member and the first coupling member and also couples the rod member and the second coupling member.