JP4055193B2 - Float removal device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a suspended matter removing apparatus for collecting and removing floating matters such as a sedimentation pond.
[0002]
[Prior art]
What floated from the sewage (scum or floss) floats on the water surface of the first or final sedimentation basin, and these suspended matter is removed by the suspended matter removing device.
[0003]
[Problems to be solved by the invention]
By the way, the current removal device is provided to move up and down to the square trough that is installed with the rear side being higher than the water surface and the front side being lower than the water surface, and the floating material induction side that is the front side of this trough. The weir is attached to the trough's floating material attraction side via the rotating shafts provided at both ends in the longitudinal direction and swings up and down to float when the weir floats on the water surface. By damming objects and submerging below the surface of the water, it is configured to flow floating objects and attract them into the trough.
[0004]
Such a removal device is somewhat complicated in structure and complicated to construct.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an inexpensive device while simplifying the structure and simplifying the construction.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 A trough that is fixedly installed between opposing side walls in the settling basin with the front side being low and the rear side being higher than the front side, with the front side being lower than the water surface and the rear side being higher than the water surface. In the suspended matter removing apparatus provided with a weir that is provided so as to be reciprocally movable to stop or attract the suspended matter, and a driving means for reciprocatingly driving the weir, at the upper ends of the front side and the rear side of the trough Is provided to form a surface in which the front rib and the rear rib are lowered to the front side of the trough, With one plate-like member The trough upper surface is provided so as to cover the front and rear ribs so as to be inclined obliquely downward, and can be reciprocated in the front and rear oblique directions of the trough via rollers between the ribs, and In the weir, A floating material entrance is opened in the plate surface, and the lower edge of the entrance in the inclined direction is lower than the water surface, so that it is possible to attract the floating material, and it is possible to block the floating material by raising it above the water surface. With The front seal protruding from the trough-side front rib is provided between the weir and the trough to prevent water from entering from the front, The driving means includes an interlocking rod connected via a plate surface portion above the floating material induction port of the weir, and the weir can be interlocked vertically in accordance with the movement of the rod. It is characterized by that.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. .
[0007]
1 and 2 show a preferred embodiment thereof. .
[0008]
2 in FIG. 2 is formed as a pair on the left and right sides of the sedimentation pond. .
[0009]
A communication trough 2 is inserted into and fixed to each side wall 1 with its axis oriented in the horizontal direction. .
[0010]
This communication trough 2 has a rectangular tube shape and includes flanges 3 at both ends. .
[0011]
Each flange 3 has a plurality of bolt holes. .
[0012]
A trough 5 is fixed between the opposing communication troughs 2 and 2. As shown in FIG. 1, the trough 5 has a J-shaped cross section including a bottom plate portion 6, a front plate portion 7, and a rear plate portion 8, and is folded forward at the upper end of the front plate portion 7. The rib 9 is also formed on the upper end of the rear plate portion 8. Then, the flanges 11 provided at both ends of the trough 5 are applied to the flanges 3 and 3, and the trough 5 is fixed by fasteners (bolts and nuts) (not shown). A rubber plate-like shape is formed on the front plate portion 7. The front seal 12 is fixed in a forward protruding manner. The front seal 12 is detachable and can be moved forward and backward. The seal 12 protrudes obliquely upward, but may be horizontal or protrude obliquely downward. Further, when there is no front rib 9, a substantially L-shaped cross section consisting of a portion inserted into the front plate portion 7 of the trough 5 (which may be fixed along the front surface) and a portion protruding forward from the same portion. It may be a seal.
[0013]
15 is a weir. The weir 15 is formed by a part of the cylindrical surface, and the length in the longitudinal direction is slightly shorter than the length between the inner surfaces of the flange 11, and watertight while moving along the flange 11 at both ends thereof. A side seal 16 that performs the function is provided as an external fitting that bends along the weir 15 with a U-shaped cross section. The boundary between the side seal 16 and the front seal 12 is in a watertight state.
[0014]
Reference numeral 18 denotes a fulcrum shaft (fulcrum). The fulcrum shaft 18 is provided on a bracket 19 projecting from the lower inner surface of the rear plate portion 8 of the trough 5, and the weir drive arm 20 rotates through the fulcrum shaft 18. A pair of left and right are provided freely. The weir 15 is attached via the tips of the arms 20 and 20. The fulcrum shaft 18 is provided as a separate left and right shaft, but may be provided as a single through shaft.
[0015]
In the settling basin, a rotating shaft 22 is provided near the lower surface of the water surface 23 as one axis of the four-axis driving system, and a pair of left and right sprockets 24 are attached to the rotating shaft 22. A pair of left and right chains 25 are hung on the sprocket 24, and a plurality of flights 26 are arranged on the outer peripheral side of both the chains 25.
[0016]
A roller 27 is attached to the front end of the flight 26 in FIG. 1 and is configured to be interlocked with the weir 15 by being kicked by the roller 27. That is, a bearing 28 as shown in FIG. 5 is attached to the side wall 1, and the arm shaft 29 is provided with both ends supported via the bearing 28. A first operating arm 30 is extended on one side of the arm shaft 29, and a cam 31 is attached to the tip of the arm 30 so as to face the roller 27. The first operating arm 30 is provided with a lower limit stopper 32 so as to be opposed thereto, and a return weight 33 is mounted on the arm 30 so as to be capable of moving back and forth.
[0017]
A second operating arm 35 extends on the trough 5 side of the arm shaft 29, and in this embodiment, a pair of left and right extends. The rear end of the arm 35 and the weir drive arm 20 are connected by an interlocking rod 36.
[0018]
Although water pressure is acting on the front surface of the weir 15, this pressure is always received via the fulcrum shaft 18, and therefore, there is no possibility that an excessive force is applied to the front seal 12, and the sealing function is performed with less damage. Is demonstrated for a long time. When the roller 27 kicks up the cam 31, the first operating arm 30 is lifted while the second operating arm 35 is lowered, and the weir driving arm 20 is pushed down via the interlocking rod 36. As a result, the weir 15 is lowered, and the upper end of the weir 15 falls below the water surface 23, thereby attracting suspended matter on the water surface and introducing it into the trough 5.
[0019]
As the roller 27 passes the cam 31, the first operating arm 30 is lowered and the second operating arm 35 is lifted by the weight of the weight 33 and the cam 31, and the weir 15 is lifted via the weir driving arm 20. As a result, suspended matter on the water surface is blocked. The second operating arm 35 may be one. Further, the first operating arm 30 may be two as shown by a solid line and an imaginary line in FIG. 5, and is effective for ensuring a reliable operation when the chain 25 of FIG. 1 is made of resin. In this case, the number of the second operating arms 30 may be one or two.
[0020]
In the embodiment shown in FIGS. 3 and 4, the front rib 40 of the trough 5 is made horizontal, and a front seal 41 is attached horizontally on the upper side thereof. Reference numeral 42 denotes a weir, and the weir 42 has a U-shaped cross section, and its open side faces forward, and a buoyant body 43 made of a foamed resin material is fitted inside the open side. Side seals 44 are attached to both ends of the weir 42 and move up and down along the inner surface of the flange 45 in a watertight state. The side seal 44 may be provided on the flange 45 side. The same applies to the embodiment of FIG.
[0021]
A pair of left and right rollers 46 are provided on the bottom surface of the weir 42, and the rollers 46 are guided up and down along the front surface of the trough 5 and the guide 47 fixed to the bottom surface of the trough 15. A pair of left and right rollers 46 are also provided on the upper surface, and the rollers 46 are guided up and down along a pair of left and right groove rail-shaped guides 48 erected on the upper side of the trough 5. An interlocking rod 49 is connected to the upper side of the weir 42.
[0022]
3 and 4, water pressure is applied to the front surface of the weir 42, but since this is reliably received by the upper and lower rollers 46, 46, a stable damming state and operation are ensured. Here, when the second operating arm 50 and the interlocking rod 49 are lowered, the weir 42 is lowered, and when the pushing-down force is lost, the weir 42 is lifted by the buoyant body 43 and returned to the water surface. The weir 42 may be a hollow body. The dam 42 may be a simple plate, and in this case, a return weight is added. 3 and 4 also uses the arm system shown in FIG. 5, but there may be various modifications as described above. The guide 48 has a groove shape, but may have a lip. Further, the guide 48 may be a simple bar instead of the groove, and conversely, the roller 46 may be a hook. The roller 46 may be provided on the trough 5 side instead of the weir 42 side.
[0023]
In the embodiment shown in FIG. 6, the front rib 52 is slightly upward so as to be on the center line of the circle centering on the fulcrum shaft 18 that is the rotation center of the weir 15, and the front seal 53 is attached on the upper side. ing. The fulcrum shaft 18 is not limited to the illustration, and may be provided at any location on the trough 5, but a location that does not excessively obstruct the flow of the suspended matter in the longitudinal direction is selected. Further, water pressure acts on the front surface of the weir 15, so that the weir driving arm 20 and the weir 15 may be connected by the shaft 54.
[0024]
In the embodiment shown in FIG. 7, the trough 57 is formed by cutting out a part of a cylindrical body, and includes flanges 58 at both ends in the longitudinal direction. The opening of the trough 57 is a floating material attracting port 59, and the lower end edge thereof is below the water surface 60. A bracket 61 is fixed inside the trough 57, and a weir driving arm 63 is attached via a fulcrum shaft 62 of the bracket 61. The plate portion from which the induction port 59 is cut is used as it is as the weir 64 and is supported by a fulcrum shaft 62 that is provided slightly eccentric from the center of the trough 57. 65 is a front seal, and 66 is a side seal. The interlocking rod 67 is connected to the middle of the weir driving arm 63, but it may be the tip like a virtual line. Further, the weir 64 may be guided by the upper and lower rollers 68. The weir may not be a rotary type but may move up and down linearly as shown in FIG. Further, the weir may be disposed inside the trough 57.
[0025]
In the embodiment shown in FIG. 8, the weir 70 has a flat plate shape and can be moved up and down by upper and lower rollers 71, and is made watertight by a front seal 73 protruding from the trough 72. In this case, since the water pressure acts, the weir 70 is arranged in front of the trough 72 and the water pressure is applied so that the roller 71 hits the front surface of the trough 72. Note that the lower end of the weir 70 may be provided with a float 73 on the rear side (trough side) from the center of the roller so as to cancel the moment due to the water pressure applied to the weir 70. The trough 72 may have a shape as shown in FIG. 3 and the guide may be erected. However, in this embodiment, the trough 72 having a square cross section is formed with a floating material attracting port 74 formed on the front surface thereof. It is. The upper front surface serves as a guide for the roller 71. Further, as shown in FIG. 8, a rotation fulcrum 76 is provided on a fixed stay 75 erected from the trough 72, and a swingable arm 77 is attached to the fulcrum 76, and a weight 78 is provided at the rear end of the arm 77. A water tank 79 is provided at the tip. The water tank 79 is supplied with water from above as indicated by an arrow and accumulates, and the water tank 79 is lowered by its weight, and at the same time, a certain amount of water is discharged from the fine drainage port 80. is there. The front side of the fulcrum 76 of the arm 77 is connected to the weir 70 by an interlocking rod 81. When water is supplied to the water tank 79, the tank 79 gradually descends and stops at a certain height. When the water supply is stopped, the water tank 79 is gradually lightened by the drainage from the fine drainage port 80, and the weir 70 is lifted by the weight 78. This water tank system is also used for the system shown in FIGS. 1 to 7 and also for the embodiments shown in FIGS. 9 to 13. Conversely, the drive system of FIG. 1 can also be used for the drive system of FIG.
[0026]
In the embodiment shown in FIG. 9, the trough 83 has one side long and the other side short and L-shaped and fixed in an oblique posture, with the long side on the rear side and the short side on the front side below the water surface. A front seal 84 is attached, a fulcrum shaft 85 is arranged on the rear wall, and a weir driving arm 86 is attached. Further, a weir 87 is provided at the tip of the arm 86 and is placed on the front seal 84 on the trough 83. It is watertight. Reference numeral 88 denotes a rib. Note that the communication trough may have the same shape as the trough 83, or a rectangular tube that communicates in an oblique posture.
[0027]
The embodiment shown in FIG. 10 is composed of a trough 90 having a round pipe slightly longer than a half cut and a weir 91 having a slightly shorter circumference, and these are manufactured from one round pipe. The dam 91 is openable and closable by a fulcrum shaft 92. 93 is a front seal, 94 is a side seal, and 95 is an interlocking rod. In addition, a pond bottom drive system is adopted in which a cam is arranged at the bottom of the pond and the cam is kicked by a roller that moves along the pond bottom and the weir 91 is moved up and down by the connecting pipe 96, as shown by an imaginary line. Also good. This pond bottom drive system can be used in all other embodiments of this embodiment.
[0028]
In the embodiment shown in FIG. 11, a fulcrum shaft 99 is arranged on the front side of the trough 98 and a U-shaped (or semi-cylindrical) weir 100 is attached to the same axis 99. The weir 100 is a vertical weir. It consists of a portion 100a, an upper plate portion 100b, and a lower plate portion 100c. The interlocking rod 101 is connected to the upper plate portion 100b. The damming portion 100a is long like the trough 98, but the upper and lower plate portions 100b and 100c may be short. The upper plate portion 100b hits the back surface of the trough 98 by rotation, and the lower plate portion 100c hits the front surface of the trough 98 when returning. In addition, since the water pressure acts on the portion above the fulcrum shaft 99 of the damming portion 100a (the water pressure does not act on the lower portion), in order to offset or reduce this, May include a float 102 for generating a reverse moment.
[0029]
The embodiment shown in FIG. It is a single plate-like member A weir 104 is slidably mounted on the upper surface of the trough 105. The trough 105 is formed with a front rib 106 and a rear rib 107, which are front-down and on the same inclined surface. Rollers 108 and 108 are disposed on both ribs 106 and 107, and the weir 104 is allowed to roll thereon. The weir 104 has a floating material attracting opening 110 in the plate surface, and the inclined plate surface portion below the lower edge of the inclined direction serves as a weir stop 109. An interlocking rod 111, which is a driving means, is connected to a location above the floating material induction port 110 of the weir 104. As the rod 111 is moved up and down, the weir 104 is interlocked vertically so that the lower lip is lowered below the water surface and the suspended matter is attracted and raised above the water surface to bring the suspended matter into a dammed state. Repeat this exercise .
[0030]
When the interlocking rod 111 is lowered, the weir 104 is lowered obliquely downward by the roller 108, and the floating material attracting port 110 is brought to the water surface to attract the floating material. Although the water pressure acts on the weir 104, conversely, since the water pressure is used for the structure, the structure can be simplified. Reference numeral 112 denotes a front seal, which also requires a side seal. The lower roller 108 may be a rubber roller and replaced with a front seal. Alternatively, a rubber roller type seal roller may be arranged in addition to the lower roller 108.
[0031]
In the embodiment shown in FIG. 13, the bracket 115 protruding from the trough 114 is provided with a roller 116, and the lower part of the weir 117 is supported by the roller 116, and the water pressure of the weir 117 is offset up and down. is there. Reference numeral 118 denotes a posture holding spring. The weir 117 is bent into a square shape to give strength, but it may be a flat plate.
[0032]
The driving means uses the flight driving force or the weight of water as described above. However, the driving means may be a fluid pressure using an electric power source, for example.
[0033]
The embodiment shown in FIG. 14 is for a water-driven floating substance removing device installed in the longitudinal end of a rectangular sedimentation basin 200. The sedimentation basin 200 has side walls 201, 201 facing in the width direction. And an end wall 202 that connects between the end portions of the side wall 201.
[0034]
A communication trough 204 is inserted and fixed in each side wall 201 through a through hole 203 formed by a chip. This communication trough 204 is provided with flanges 205 at both ends of the square tube, and is installed so as to be slightly inclined so that scum water naturally flows from one communication trough 204 to the other communication trough 204.
[0035]
The communication trough 204 is received from below by a bracket 206 fixed to the inner surface of the side wall 201 via a receiving member 207. Between these communication troughs 204, a trough 210 is coupled with a fastening member 211 and horizontally mounted. The trough 210 includes a bottom plate portion a, a back plate portion b, a rear upper flange c, a front lower plate portion d, and a front upper plate portion e, as shown in the cross section at the center.
[0036]
The trough 210 is open at both ends, and is fixed by connecting a flange 212 corresponding to the flange 205 to the flange 205 with a fastener 211. The bottom surface of the trough 210 is slightly inclined in one direction (for example, the right direction in the figure) as described above.
[0037]
Reference numeral 215 denotes a weir, which is formed slightly shorter than the trough 210. As shown in FIG. 15, it is plate-shaped and includes a base f and a rear flange g. The base f is upward several degrees with respect to the base f. The front part h which inclines is provided integrally, and the front end i which inclines further upward is provided in the front end of the front part h. In the front end i, several notches j are formed in the longitudinal direction so that the large scum S can be swallowed.
[0038]
Side plates 216 are integrally fixed to both ends of the weir 215. As shown in FIG. 15, the same side plate 216 has a sector shape in which a rotating shaft 217 that protrudes outward is inserted and fixed in an insertion hole in the center. Between the weir 215 with the side plate 216 and the trough 210, a rubber front seal 219 fastened to the bottom surface near the base of the weir 215 is inserted and fixed to the front end of the trough 210 to prevent water from entering from the front. It has come to be. The seal 219 includes a U-shaped bent portion concentric with the rotating shaft 217, an attachment portion to the trough 210, and an attachment portion to the weir 215. The weir 215 rotates around the rotating shaft 217, and prevents the intrusion from the front while deforming the curved portion of the front seal 219 by bending. A recess 216a for attracting the scum S from the outside to the inside is formed on the outer periphery of the side plate 216. 218... Are mounting holes, which will be described later.
[0039]
The rotating shaft 217 protrudes from the side plate 216 toward the flange 212, and the rotating shaft 217 is rotatably supported by a bearing (not shown). The bearing is mounted on the flange 212 side with a built-in spherical bearing. Further, a side seal is provided on the inner surface of the flange 212 in a vertically inclined manner. The side seals are in pressure contact with the outer surface of the side plate 216 to prevent water from entering between the side plate 216 and the flange 212. For example, with a sponge.
[0040]
On each inner surface of the side plate 216, a stay 221 protrudes upward from a mounting hole 218 at the rear portion via a fastening tool 220. Arms 222 are horizontally attached to the upper ends of the stays 221, a water tank 223 is horizontally mounted between the front ends of the arms 222, and weights 224 are attached to the respective rear portions so as to be freely advanced and retracted.
[0041]
The water tank 223 is a rectangular cylinder and includes a pair of left and right tank bodies 225, 225. One end of each of the body 225 is coupled and supported to the arm 222 through a side lid 226, while being centrally supported. The other end of the side is connected and supported by the inner cylinder 227 with a little separation. The tank body 225 is further connected by an outer cylinder 228 to form a water tank 223. Reference numeral 229 denotes a stopper of the arm 222.
[0042]
The water tank 223 may be made of metal such as stainless steel, but is made of glass fiber because it needs to be lightweight. Of course, the water tank 223 may be a single one or may be completely separated on the left and right. The water tank 223 may have a round cross section or other geometric shapes.
[0043]
The water tank 223 is coupled to the weir 215 via a plurality of ribs 230 attached to the weir 215. The stay may be erected by using the one formed on the front side of the mounting hole 218, and the upper end of the stay may be coupled to the water tank 223 and supported.
[0044]
Water is supplied to the water tank 223 through a common pipe 232 from one communication trough 204 to the other communication trough 204 through the trough 210. This pipe 232 is also passed to the scum removing device installed adjacent to the pipe 232 in the same manner, a water supply source is provided at the start end, and the end is closed.
[0045]
The pipe 232 is supported by a bracket 234 and a fixture 235 attached to the rear part of each trough 210. An inlet side flexible tube (not necessarily flexible) 237 is connected to the middle of the pipe 232 and is installed on the pond and connected to an open / close valve 238 such as an electromagnetic valve. An outlet side flexible tube 239 is taken out from the valve 238 and connected to the water tank 223 through the outer cylinder 228 so as to communicate therewith. A lever 241 is erected through a rib 230, and a manual lever 243 that can be operated from the pond is detachably inserted into an insertion tube 242 attached thereto. A tube 239 is supported intermediately.
[0046]
In addition, on the rear side of the water tank 223 that cannot be seen in the figure, drainage holes for discharging the supplied water naturally in small amounts are appropriately opened at appropriate locations. It can be adjusted by adjustment. The direction of the drainage port is set so as to flow down to break the scum S collected before the weir 215 or to flow down to break the scum S flowing on the weir 215.
[0047]
When the inside of the water tank 223 is empty, as shown in FIGS. 14 and 15, the front end portion of the weir 215 protrudes from the water surface 245 so that the scum S is blocked. Water is constantly supplied from the common pipe 232 to the inlet side flexible tube 237, and when the valve 238 is opened by a timer, water is supplied into the water tank 223 through the outlet side flexible tube 239 by a certain amount. At the same time, water is discharged from the drainage port, but the amount is very small, so that water gradually accumulates in the water tank 223 and the weir 215 descends from the water surface 245 by its weight.
[0047]
This is done against the weight 224, and the weir 215 sinks to a certain depth. Thereby, the scum S is swallowed. In order to restrict the weir 215 to a certain level, a stopper or a spring may be provided. When the valve 238 is closed by the timer, the amount of water in the water tank 223 is gradually reduced, the weir 215 is lifted, and the flow of the scum S is prevented. At this time, the weight 224 acts.
[0048]
In the settling pond, an upper guide rail 248 is installed via a bracket 247, and a flight 250 is slid through the guide 249. The guide 249 is a conventional type. It was easy to come off with the earthquake. As in the embodiment shown in FIG. 16, the guide 249 is L-shaped, the vertical side 249 a is elongated downward, and is arranged at the end of the flight 250. This made it difficult to come off.
[0049]
In addition, the embodiment shown in FIG. 17 is for attaching a weir 253 provided at the front part of the trough 252. It is supported at the center of rotation. Reference numeral 254 denotes a front seal. Reference numeral 255 denotes a water tank, and the tank 255 is supported at the front part of the weir 253 or supported at the rear part. Moreover, you may make it interlock | cooperate with a flight like the said embodiment.
[0050]
The embodiment shown in FIG. 18 is for a scum skimmer, and the scum skimmer 300 is cylindrical and rotates on both ends. Reference numeral 301 denotes left and right side walls of the settling basin, and the scum skimmer 300 is configured for two settling ponds configured with the side walls 301, and swallows floating matter on the water surface 310 and is in one direction. These floating substances and some water are introduced into the scum pit 302 at the same time.
[0051]
The scum skimmer 300 is made of FRP and has an inflow port 303... At the upper part thereof. The A part which is a support part of the scum skimmer 300 is shown in FIG. 19, the B part is FIG. 22, and the C part is FIG. Details are shown in each. The material of the scum skimmer 300 may be a metal such as stainless steel or other resin other than FRP.
[0052]
First, as shown in FIG. 19 which is a detail of the A portion, an end plate 304 is provided separately or integrally with one end portion of the scum skimmer 300. On the other hand, a set hole 305 is formed in the side wall 301, and a mounting plate 307 with a support rod 306 is fixed in the hole 305 by a fastening tool a. The support rod 306 protrudes horizontally from the center of the mounting plate 307. A collar 309 is interposed on the outer periphery of the base, and the hole of the end plate 304 is inserted into the rod 306, so that the scum skimmer 300 can be rotated back and forth. It is supported by.
[0053]
A bearing 311 such as a sliding bearing or a rolling bearing is attached to the inner surface of the end plate 304, and the scum skimmer 300 is supported by the bearing 311 so as to rotate smoothly. 312 is a seal, 313 is a collar, and 314 is a set pin.
[0054]
As in the embodiment shown in FIG. 20, the mounting plate 307 may be fixed as it is without forming a set hole in the side wall 301. In the embodiment shown in FIG. 21, the first bracket 316 is fixed to the side wall 301, the second bracket 317 is fixed on the bracket 316, and the support rod 318 is provided on the bracket 317 to rotatably support the scum skimmer 300. It is a thing.
[0055]
The embodiment of FIG. 22 showing the details of the portion B of FIG. 18 is one in which the adjacent scum skimmers 300, 300 are rotatably supported by an intermediate side wall 301. A through hole 320 is formed in the side wall 301 in the horizontal direction, and a connecting cylinder 321 is inserted into the through hole 320 in a protruding state from both ends by FRP or the like. On the outer periphery of the connecting cylinder 321, a mounting plate 322 that also serves as a seal is provided so as to be fixed to both outer surfaces of the side wall 301 by the fasteners a.
[0056]
A pair of bearings (sliding bearings, rolling bearings, etc.) 323 are provided in the connecting cylinder 321 in the axial direction, and the bearing 323 is the same as the substrate 324 fastened to the upper end of the inner peripheral surface of the connecting cylinder 321. The stay 325 extends downward from the substrate 324. There is no stay 325 or the like in the space below the inside of the connecting cylinder 321, and scum or the like is easy to flow.
[0057]
A horizontal rotating rod 327 is rotatably inserted through both bearings 323, and both end shaft portions of the rotating rod 327 are protruded downward by being integrally or separately mounted in each end portion of the adjacent scum skimmer 300. It is inserted and fixed in the insertion hole 329 of the provided support bracket 328. For this fixing, fixing means such as various fasteners such as bolts and stop pins and fitting means are employed. On the other hand, the stay 325 side may be fixed, and the support bracket 328 side may be rotary. The support bracket 328 may be fastened to the scum skimmer 300 by a virtual line fastener a. In this case, the scum skimmer 300 can be made of FRP and the support bracket 328 can be made of SUS, while the scum skimmer 300 and the support bracket 328 can be made of SUS or FRP.
[0058]
In order to prevent water from entering between the scum skimmer 300 and the connecting cylinder 321, a ring plate 331 is arranged at the end of the connecting cylinder 321, and a retaining ring 332 is fastened and fixed inside and outside the ring 331. A seal 333 is disposed inside the retaining ring 332, and the retaining ring 332 is also fixed inside the seal 333. This is similarly configured for the left and right end portions of the connecting cylinder 321.
[0059]
It is also possible to configure as shown in FIG. That is, the substrate 324, the stay 325, and the bearing 323 are made into a single unit instead of a pair as shown in FIG. 22, and the opposing ends of the scum skimmer 300 are inserted and approached into the hole 320. According to this, the scum skimmer 300 rotates more stably and smoothly. A mounting plate 336 provided with a seal 335 is provided on the outer periphery of the scum skimmer 300 so as to be waterproofed by a fastening tool a.
[0060]
Furthermore, it can also be configured as in the embodiment shown in FIG. In this embodiment, a receiving plate 338 is provided on the inner periphery of the upper portion of the through hole 320 for mounting the substrate 324. The receiving plate 338 is integrally attached to the ring plates 339 along the left and right sides of the side wall 301. It has been. A mounting plate 336 with a seal 335 is provided outside the ring plate 339 to provide a waterproof function.
[0062]
Moreover, it can also comprise like embodiment shown in FIG. In the embodiment, the support bracket 341 is separately attached to the scum skimmer 300 by the fastening tool a, and the manual arm 342 is equipped using the fastening tool a. The manual arm 342 rotates the scum skimmer 300 from above the sedimentation pond.
[0063]
FIG. 25 shows the details of part C of FIG. 18 and shows the support and seal structure of one end facing the scum pit 302 (FIG. 18) of the scum skimmer 300. An inverted L-shaped stay 344 is fixed to the outer surface of the side wall 301, and a bearing 345 is provided at the lower end of the stay 344, and the rotating rod 346 is rotatably supported by the bearing 345.
[0064]
The rod 346 is inserted and fixed to a support bracket 328 in the scum skimmer 300, and a manual arm 347 is attached to the end. An end portion of the scum skimmer 300 is formed with a notch 348 at the lower end thereof so as to easily flow into the pit. A mounting plate 336 is fixed to the side wall 301, and an inner peripheral seal 335 is in contact with the outer periphery of the scum skimmer 300. Reference numeral 349 denotes a cover.
[0065]
FIG. 27 and FIG. 28, which is a right side view thereof, show another example of a support structure for the scum pit side end portion of the scum skimmer 300. A roller plate 352 having a plurality of guide rollers 351 is fixed to the outer surface of the side wall 301, and the rollers 351 are fixed between a pair of guide rings 353 projecting from the outer periphery of the scum skimmer 300. It comes to move along. As shown in FIG. 29, the roller 355 may have a groove and the guide ring 356 may be a single sheet.
[0066]
The scum skimmer 300 in the embodiment shown in FIGS. 18 to 29 may be rotated only by a manual arm, but may be rotated by a driving method as shown in FIGS. 34 to 40 described later.
In the embodiment of FIG. 18, the scum skimmer 300 is provided for two sedimentation ponds. However, the scum skimmer 300 arranged in a continuous manner in one sediment basin or four or more sedimentation basins. The same applies to.
[0067]
Here, in relation to the above-described embodiment, the buffer type support system shown in FIGS. 30 to 33 embodied for earthquake countermeasures and the like will be described. FIG. 30 relates to the embodiment shown in FIG. 20. The mounting plate 307 with the support rod 306 is elastically supported by a buffer member 359 between the fixing plate 358 on the side wall 301 side. Since the fixing device a is attached through the buffer member 361 that is formed in the hole 360 and is inserted into the hole 360, a buffering effect can be further exhibited.
[0068]
FIG. 31 relates to FIG. 21, in which a buffer member 363 is interposed between the first bracket 316 and the second bracket 317. FIG. 32 relates to FIG. 23 and FIG. 26, in which a buffer member 365 is interposed between the substrate 324 and the side wall 301. FIG. 33 shows that not only a rotary scum skimmer but also a square trough 367 that is fixedly supported by a bracket 368 from the side wall 301 can be supported by the buffer member 369. In each embodiment from FIG. 1 to the last figure, FRP can be used for the trough or scum skimmer, and FRP may be used for other members such as weirs and communication troughs.
[0069]
34, the scum skimmer 300 is supported by a rotating shaft 371 and returned by a return balancer 372. In this case, the scum skimmer 300 is drained by supplying water into a water tank 374 provided via a stay 373. A small amount is discharged through the mouth 375 so as to be reciprocated. In this case, water can be supplied / stopped by opening / closing the valve 377 by the manual arm 376, but the valve such as electromagnetic may be periodically controlled by timer control instead of manual operation.
[0070]
FIG. 35 shows a similar scum skimmer 300 having a lower sprocket 380 on the outer periphery, an upper sprocket 381 on the upper side, which can be linked by a chain 382, and a water tank 383 on the chain 382. It is. By supplying water to the water tank 383, the scum skimmer 300 is rotated via the chain 382, and is returned by a balancer (not shown). The water tank 383 is also provided with a drain port 384.
[0071]
FIG. 36 shows a scum skimmer 300 provided with a balancer 386, which can be returned, and an arc rack 387 provided on the outer periphery of the scum skimmer 300, and a drive rack 388 that meshes with the rank 387. The water tank 389 is configured to be driven by the weight of water supplied. Also in this case, the water outlet 390 is formed in the water tank 389.
[0072]
In FIG. 37, the scum skimmer 300 is rotated forward by interlocking with a flight 393 that circulates by a chain 392 and returned by a balancer. The flight 393 has a hollow type that swings by an arm 394. While a pipe 395 is provided, a base arm 396 is projected from the scum skimmer 300 side and an interlocking arm 398 is provided via a hinge 397. The interlocking arm 398 rotates alone around the illustrated clock hand, but also rotates the base arm 396 in the opposite direction.
[0073]
Then, the pipe 395 is always upward due to buoyancy, and when it reaches the interlocking arm 398, the arm 398 is kicked and the base arm 396 is also rotated to rotate the scum skimmer 300 in the swallowing direction. If the arm 394 is longer than that shown in the drawing, the suspended matter can be sent more in the direction of the scum skimmer 300300 when the pipe 395 comes around. Further, instead of the scum skimmer 300, a weir that moves up and down can be provided on the front side of the square trough-shaped trough, and the weir can be configured to float and sink in conjunction with the above.
[0074]
38, the FRP scum skimmer 300 is provided with a ring 400, and contacts 401 such as proximity switches of several upper and lower stages are arranged on the front side of the ring 400, and the cord 402 is used to prevent energization in the scum skimmer 300. By connecting to the control panel 404 through the rubber lining 403 and thereby setting the sewage side to-and the code 402 side to +, the contact points 401 are sequentially turned on according to the fluctuation of the water level, It becomes possible to catch the water level. At the same time, since the water level can be caught, the scum skimmer 300 is stopped at a desired rotation angle with respect to the water surface by configuring the rotational drive system of the scum skimmer 300 to respond and stop through the control panel 404. You can also make it. This is possible because the scum skimmer 300 is an FRP that does not conduct electricity.
[0075]
Further, the scum skimmer 300 is made of FRP to reduce the weight, so that the rotating operation becomes light. Therefore, the scum skimmer 300 can be driven in conjunction with the embodiment shown in FIG. That is, the rotating shaft 406 protrudes in a cantilever manner from one side wall of the sedimentation basin, or the rotating shaft 406 is horizontally mounted between both side walls, so that the interlocking arm 407 is parallel to the side wall and closer to the side wall. And a cam 408 is provided at the tip of the arm 407.
[0076]
A pressing rod 409 is provided at the rear end of the arm 407 and is connected to a lever 410 protruding from the scum skimmer 300 so as to be interlocked. The cam 408 is lifted in conjunction with the roller 412 of the flight 411, and the lever 410 is pushed down, so that the scum skimmer 300 swallows the suspended matter in conjunction with the front. The scum skimmer 300 is made of FRP and has been reduced in weight, making it possible to implement such an interlocking method for the first time. The return rotation of the scum skimmer 300 uses the weight of a member such as the cam 408 or attaches a balancer. Other members such as the cam 408 and the interlocking arm 407 may be made of FRP. The scum skimmer 300 may be operated directly or via a roller by the interlocking arm 407 without the lever 410.
[0077]
In FIG. 40, the scum skimmer 300 is provided with a balancer 414 and a water tank 416, and the water in the pond is poured into the water tank 416 by the FRP water charging container 419 which is moved up and down by the roller 418 of the flight 417. It is configured to operate in the direction. The scum skimmer 300 is preferably made of a lightweight FRP. For example, the interlocking arm 421 is provided on the rotating shaft 420, and the cam portion 422 of the arm 421 is lifted by the roller 418, so that the water charging container 419 draws water and puts it on the water surface. It comes to lift.
[0078]
A valve 424 is provided in the water charging container 419. When the valve 424 is raised, the drain port 425 opened at the bottom of the container 419 is closed, but the stopper 426 fixedly projecting on the pond side faces the container 419 side. The valve 424 is opened from the time when the lever 427 hits, and water is introduced into the water tank 416 from the drain outlet 425 through the water guide plate 428. As the roller 418 passes through the cam portion 422, the interlocking arm 421 is automatically lowered. Note that the water tank 416 is provided with a minute drain hole to discharge the gradually introduced water. Moreover, the suspended | floating matter removal apparatus may have a trough provided with the weir on the front side by the said fixed type.
[0079]
FIG. 41 and FIG. 42, which is a longitudinal sectional view thereof, are embodiments of a circular sedimentation basin. A center well 430 is provided at the center of the sedimentation basin, and the rake 431 on the bottom wall is rotationally driven via a drive shaft 434 by a drive unit 433 provided on the walkway 432 to drop and discharge the sludge that has settled.
The sedimentation basin is provided with a sewage inflow pipe 436 and a trough 437 that is a main body of the floating substance removing device. In this embodiment, the sewage inflow pipe 436 and the fixed trough 437 are combined into one.
[0080]
This unification leads to strength merit. 43, the sewage inflow pipe 436 has a round shape as shown in FIG. 43. However, the sewage inflow pipe 436 may have a square shape as shown in FIG. 44 or other shapes, and the trough 437 also has a square bowl shape as shown in FIG. Other shapes may be used. Between the sewage inflow pipe 436 and the trough 437, a box 441 is provided integrally with the inflow pipe 436 or separately connected so as to be located in the center of the sedimentation basin, and is opened at the bottom of the box 441. Sewage is introduced into the sedimentation pond through the sewage inlet 442. The pipe 436 and the trough 437 can be freely provided with a reinforcing rib between the box 441 and the like. On the other hand, the box 441 may be omitted. The end surface of the trough 437 on the pond center side is a partition. A front side of the trough 437 is provided with a weir 443 that moves up and down. When the scraper 438 rotates, the cam 444 provided in the scraper 438 presses the roller 445 on the weir 443 so that the weir 443 is pushed down. It is made to swallow the suspended matter. Since the trough 437 extends into the center well 430, the suspended matter in the well 430 can be captured at the same time. The scraper 438 includes the rubber sag 446, so that the trough 437 can be easily climbed over.
[0081]
Moreover, although the bottom wall of the sedimentation basin is inclined, by setting the inclination angle to 60 degrees or more, sludge naturally flows down and the rake 431 becomes unnecessary. The sedimentation basin may have multiple floors above and below.
[0082]
FIG. 43 is an example in which the sewage inflow pipe 436 is reinforced, in which a reinforcing member 448 such as an H-shaped steel is coupled along the side of the pipe 436, and is connected by a fastener a as indicated by a solid line, It can be connected with a wire rope 449 or the like. As shown in FIG. 44, a reinforcing rib 450 may be attached to the side portion of the inflow pipe 436.
[0083]
On the other hand, as shown in FIG. 45, as a reinforcement of the trough 437, a reinforcing member 452 made of H-shaped steel may be provided along the bottom surface of the trough 437, or as shown in FIG. Accordingly, a reinforcing member 454 may be provided for reinforcement. On the other hand, the H-shaped stainless steel may be used as a trough.
[0084]
In addition, as shown in FIG. 47, sewage inflow pipes 456 having side plates 457 on the left and right sides of the H-shaped material and having two passages inside may be used by using H-shaped stainless steel. A sewage introduction pipe 458 for introducing sewage into the pipe 456 is a round pipe. A reinforcing member such as an H shape may be inserted and fixed in a round or square sewage inflow pipe for reinforcement.
[0085]
Instead of the trough 437 of the embodiment, a rotating scum skimmer may be used. In this case, the reinforcing beam shown in FIG. 43, FIG. 45, FIG. Further, as shown in FIG. 48, only the H-shaped portion of the sewage inflow pipe 456 of FIG. 47 may be extended to the other as it is and used as a receiving member (reinforcing member) of the trough 437. Reference numeral 459 denotes a sewage introduction port.
[0086]
FIG. 49 shows the structure of the suspended matter discharge portion of the circular sedimentation basin. A supernatant drainage 461 is provided on the inner periphery of the peripheral wall 460, and a baffle 462 is provided on the inner peripheral side, while a scum pit 463 is provided on the outer periphery of the peripheral wall 460. A SUS quality receiving pipe 465 is inserted into the peripheral wall 460 through a through hole 464, and is also received on the supernatant drainage 461. A bearing 466 is provided in the receiving pipe 465, and a bearing 466 is also provided outside the peripheral wall 460, and a rotating rod 467 is rotatably provided through these.
[0087]
A scum skimmer 300 made of FRP is coupled to the inner end portion of the rod 467 via a connecting member 468, while a manual arm 470 is provided at the outer end portion of the rod 467 with the support of the stay 469. Yes. Reference numeral 471 denotes a seal. The scum skimmer 300 may be made of a material such as SUS.
[0088]
FIG. 50 shows a reinforcing ring 475 made of FRP (or SUS or the like) that is reinforced by mounting it integrally around the entire peripheral portion 474 other than the opening 473 of the scum skimmer 300 made of FRP. The reinforcing wheel 475 effectively functions as a guide when the scraper 476 of the circular sedimentation pond gets over like a virtual line. In addition to or separately from this, the opening edge portion 477 of the scum skimmer 300 may be formed in a sharp shape so as to cut the suspended matter. Further, reinforcing ribs 478 may be integrated with the outer periphery of the scum skimmer 300 along the longitudinal direction.
[0089]
FIG. 51 shows a FRP scum skimmer 300 with a flat mounting surface 480 and a reinforcing and weir plate 482 provided with a notch 481 for attracting a large floating material on the same surface 480 with a fastener a. It is.
[0090]
FIG. 52 is for facilitating the flow of suspended matter and water from the scum skimmer 300 into the scum pit, and the end of the scum skimmer 300 includes a large diameter portion 484 larger than the diameter of the main body portion.
[0091]
53 and 54 includes a water level tracking ring 487 that can be rotated via a plurality of rollers 486 on the outer periphery of the scum skimmer 300, and a water level tracking float 489 via the arm 488. Is provided. The ring 487 is provided with a water amount restriction plate 490 along the longitudinal direction of the scum skimmer 300, and the plate 490 is in contact with a seal 491 provided on the surface of the scum skimmer 300.
[0092]
When the water level in the settling pond fluctuates, the float 489 moves up and down. Thereby, the ring 487 follows the rotation by the roller 486, and the upper end of the regulation plate 490 is always kept at a level slightly lower than the water surface. Therefore, when the scum skimmer 300 rotates and swallows floating matter, the restriction plate 490 restricts swallowing a lot of water and always swallows the floating matter together with a small amount of water, thereby reducing the absolute swallowing water amount. Simplify processing.
[0093]
FIG. 55 shows an embodiment in which a mounting seat 493 is formed integrally with the FRP scum skimmer 300 and a manual lever 494 is provided via the seat 493. FIG. 56 shows an example in which several rows of circumferential ribs 496... Are integrally arranged on the front surface of a scum skimmer 300 made of FRP. FIG. 57 shows an FRP scum skimmer 300 having an integrated rib 498 formed along the longitudinal direction at the bottom of the inner surface. FIG. 58 shows an example in which a pipe-shaped reinforcing member 500 is integrally provided on the outer periphery of the scum skimmer 300, and a rib 501 may be provided on the outer peripheral bottom surface as shown by an imaginary line. FIG. 59 shows a suspended matter or the like accumulated in the scum skimmer 300 by injecting air or water through a large number of holes 504 through the pipe 503 through the scum skimmer 300 made of FRP or SUS. It shows the one that the foreign object is poured out.
[0094]
The embodiment shown in FIG. 60 and FIG. 61 which is the longitudinal cross-sectional view thereof, and FIG. 62 which is a view taken along the line XX of FIG. 61 show the same embodiment. The phantom line shown in FIG. 61 is a conventional method, and in the case where a movable weir b is provided in front of a fixed trough 505 to collect and remove floating substances on the water surface 508, the chain is a four-axis drive method. There is one that circulates 506, but the intermediate shaft 507, which is one of the shafts, is arranged in front of the trough 505 (left side in the drawing) as shown in the figure, and the chain 506 passes through the intermediate shaft 507. It was induced in a diagonally downward direction.
[0095]
The chain 506 is provided with a flight 508 so as to be able to accompany it. However, the chain 506 is adapted to descend below the water surface from the position of the sprocket 509 around the intermediate shaft 507. Since the position of the sprocket 509 is also arranged at a considerable distance from the trough 505, the flight 508 is submerged from the position substantially in front of the trough 505. As a result, since the flight 508 also sunk from the front of the trough 505, the suspended matter cannot be sufficiently sent to the suspended matter removing apparatus side.
[0096]
Moreover, in the conventional system, since the sprocket 509, the flight 508, etc. are immersed in water, it is also difficult to perform maintenance.
Furthermore, since the hook angle of the chain 506 around the sprocket 509 is small, it is easy to come off when an earthquake occurs.
In the past, limit switches were provided corresponding to the outer periphery of the sprocket around the rotating shaft obliquely downward via the intermediate shaft 507 for control, but there was a problem with durability such as corrosion because it was underwater. Not only was it inconvenient for maintenance.
[0097]
On the other hand, the embodiment shown in FIGS. 60 to 62 includes a sprocket 512 with an intermediate shaft 511 arranged behind the trough 505 on the water surface 510 as shown in the drawing. At the same time, the flights 514... Provided on the chain 513 hung on the sprocket 512 are guided on the water surface 510 along the front receiving guide rail 515 while being regulated by the front holding guide rail 516, and further passed over the trough 505. Then, it is guided downward through the sprocket 512 together with the restriction by the rear guide rail 517.
[0098]
With this configuration, the drive system is on the surface of the water, so that an abnormality of the apparatus can be detected from the pond and maintenance can be performed from the pond.
In addition, since the flight 514 moves along the water surface to a position closer to the trough 505, it becomes possible to send the floating substance to the trough 505 side.
Furthermore, since the hook angle of the chain 513 with respect to the sprocket 512 becomes large, it is difficult to come off even if an earthquake occurs.
[0099]
Further, since the limit switch 518 may be provided for the intermediate shaft 511 on the land, abnormalities such as corrosion hardly occur, and maintenance becomes easy.
Further, since the chain 513 passes over the water surface, a monitoring camera 519 for monitoring these drive systems can also be provided on the water surface, so that even if the drive system malfunctions, for example, the chain 513 breaks, Can be detected.
[0100]
As shown in FIG. 63, a rotary scum skimmer 300 may be provided.
[0101]
In addition, as shown in FIG. 64, for example, in a device that includes a weir 523 in front of the fixed trough 522 and moves up and down to remove suspended matter, the lever 525 is moved around the fixed fulcrum 524 to move the weir 523 up and down. And a roller 526 at the lower end thereof. The upper end of the lever 525 is kicked by the roller 528 of the flight 527, and the roller 526 at the lower end pushes down the weir 523 accordingly.
[0102]
Since the weir 523 is hollow, it automatically returns, but when there is no levitation force, such as when it is a plate, it is returned by a balancer or a spring. In the embodiment of FIG. 64, the fixed trough 522 is combined with the weir 523, but the rotary scum skimmer 300 may be interlocked as described above.
[0103]
In all the embodiments from FIG. 1 onward, FRP can be used for troughs, communication troughs, scum skimmers, and other members.
[0104]
【The invention's effect】
Since the present invention is configured as described above, the structure can be simplified and the construction can be simplified, and an inexpensive apparatus can be provided.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a suspended matter removing apparatus according to an embodiment of the present invention.
2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 3 is a side sectional view showing another embodiment.
4 is a sectional view taken along line IV-IV in FIG. 3;
FIG. 5 is a plan view showing an embodiment of a driving method.
FIG. 6 is a side sectional view showing another embodiment.
FIG. 7 is a side sectional view showing another embodiment.
FIG. 8 is a side sectional view showing another embodiment.
FIG. 9 is a side sectional view showing another embodiment.
FIG. 10 is a side sectional view showing another embodiment.
FIG. 11 is a side sectional view showing another embodiment.
FIG. 12 is a side sectional view showing another embodiment.
FIG. 13 is a side sectional view showing another embodiment.
FIG. 14 is a perspective view showing another embodiment.
FIG. 15 is an enlarged cross-sectional view of the main part.
FIG. 16 is a perspective view showing another embodiment.
FIG. 17 is a cross-sectional view showing another embodiment.
FIG. 18 is a longitudinal sectional front view of a scum skimmer.
FIG. 19 is a cross-sectional view showing a support structure of one end of the scum skimmer.
FIG. 20 is a cross-sectional view showing another support structure of the scum skimmer.
FIG. 21 is a sectional view showing another support structure of the scum skimmer.
FIG. 22 is a sectional view showing an intermediate support structure of the scum skimmer.
FIG. 23 is a cross-sectional view showing another example of an intermediate support structure.
FIG. 24 is a cross-sectional view showing another example of the intermediate support structure.
FIG. 25 is a cross-sectional view showing a support structure on the scum pit side of the scum skimmer.
FIG. 26 is a cross-sectional view showing an example in which a manual arm is mounted on an intermediate support structure of a scum skimmer.
FIG. 27 is a cross-sectional view showing another example of the support structure on the scum pit side of the scum skimmer.
28 is a right side view of FIG. 27. FIG.
FIG. 29 is a cross-sectional view showing another support structure.
FIG. 30 is a cross-sectional view showing an example in which a buffer member is arranged on a support structure for a scum skimmer.
FIG. 31 is a cross-sectional view showing another example of a support structure in which the buffer member is arranged.
FIG. 32 is a cross-sectional view showing an example of an intermediate support structure in which the buffer member is arranged.
FIG. 33 is a cross-sectional view showing another example in which the buffer member is arranged.
FIG. 34 is a schematic cross-sectional view showing an example of driving a scum skimmer with a water tank system.
FIG. 35 is a schematic cross-sectional view showing an example in which a scum skimmer is driven by a water tank and chain drive method.
FIG. 36 is a schematic cross-sectional view showing an example in which a scum skimmer is driven by a water tank and a rack.
FIG. 37 is a side view showing an example in which the scum skimmer is interlocked on the flight side.
FIG. 38 is a schematic cross-sectional view showing an example of detecting the water level and also detecting the rotation angle of the scum skimmer.
FIG. 39 is a side view showing another example of interlocking the scum skimmer by flight.
FIG. 40 is a schematic cross-sectional view showing an example in which a scum skimmer is driven by pumping water and throwing it into a water tank.
FIG. 41 is a plan view showing another embodiment of a circular sedimentation basin.
42 is a longitudinal sectional view of FIG. 41. FIG.
FIG. 43 is a cross-sectional view showing a sewage inflow pipe and its reinforcing structure.
FIG. 44 is a cross-sectional view showing another example of reinforcing the sewage inflow pipe.
FIG. 45 is a cross-sectional view showing an example in which a fixed trough is reinforced.
FIG. 46 is a sectional view showing another example in which the fixed trough is similarly reinforced.
47 is a cross-sectional view showing another example in which the sewage inflow pipe is reinforced. FIG.
48 is a front view of FIG. 47. FIG.
FIG. 49 is a cross-sectional view showing a support structure for a scum skimmer in a circular sedimentation basin.
FIG. 50 is a cross-sectional view showing an example in which a scum skimmer is reinforced.
FIG. 51 is a cross-sectional view showing another example of an FRP scum skimmer.
FIG. 52 is a cross-sectional view showing an example in which the suspended matter from the scum skimmer easily flows down.
FIG. 53 is a front view showing an example of a water level tracking scum skimmer.
54 is a cross-sectional view of FIG. 53. FIG.
FIG. 55 is a cross-sectional view showing an example in which an FRP scum skimmer is equipped with a manual arm.
FIG. 56 is a perspective sectional view showing an example in which a rib is attached to the FRP scum skimmer.
FIG. 57 is a perspective sectional view showing another example in which a rib is attached to the FRP scum skimmer.
FIG. 58 is a perspective cross-sectional view showing another example in which a rib is attached to the FRP scum skimmer.
FIG. 59 is a front view showing an example in which air or the like is injected into the scum skimmer.
FIG. 60 is a plan view showing an example in which the intermediate shaft is disposed above the rear portion of the trough.
61 is a side sectional view of FIG. 60. FIG.
62 is a view on arrow XX in FIG. 61. FIG.
FIG. 63 is a side view showing an example of a scum skimmer equipped type in which an intermediate shaft is arranged above the trough rear part.
FIG. 64 is a side view showing an example of interlocking the floating substance removing device in flight.
[Explanation of symbols]
5, 57, 72, 83, 90, 98, 105, 114 ... troughs 15, 42, 64, 70, 87, 91, 100, 104, 117 ... weirs 18, 62, 85, 99 ... fulcrum shafts 20, 63, 86: Weir drive arm 23, 60 ... Water surface.

Claims (1)

A trough that is fixedly installed between opposing side walls in the settling basin with the front side being low and the rear side being higher than the front side, with the front side being lower than the water surface and the rear side being higher than the water surface, In the suspended matter removing apparatus provided with a weir that is provided so as to be able to reciprocate and attract and float the suspended matter, and a driving means for reciprocatingly driving the weir, at the upper ends of the front side and the rear side of the trough Is provided to form a surface in which the front rib and the rear rib are lowered to the front side of the trough, and the weir is a single plate-like member, and the upper surface of the trough is inclined obliquely downwardly through both the front and rear ribs. It is provided so as to cover and can be reciprocated back and forth in the diagonal direction of the trough via a roller between each rib, and a floating material entrance is opened in the plate surface in the weir. The lower edge of the mouth tilt direction should be lower than the water surface With there is a suspended solids weir can stop by rise the water surface and the suspended matter can attract, between the weir and trough front seal which projects from the trough side of the front ribs of the water from the front Provided to prevent intrusion, the drive means includes an interlocking rod connected via a plate surface above the weir's floating material entrance, and the weir can be interlocked vertically in accordance with the movement of the rod It is said that it is said that the suspended matter removal device.

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