JP4522979B2 - Scraping device for sediment and levitated matter - Google Patents

Description

  The present invention relates to a scraping device for deposits and floating objects.

  Conventionally, there is a sludge scraping device with a scum scuffing function that collects sludge accumulated on the bottom of a sedimentation basin of a sewage treatment facility and scum drifting on the water surface in one direction, and scrapes them by a reciprocating motion of the flight. Yes. In the sludge scraping, the sludge scraping operation is performed in the forward movement, and the scraping is prevented by moving the flight upward so that the flight does not scrape back the sludge during the backward movement. The sludge raked is raked into the sludge pit and collected. Similarly, in the forward movement of the scum scraping, the scum scraping operation is performed, and when returning, the flight is submerged under the water surface or retracted above the water surface so that the flight does not scrape back the scum. , Prevents scraping. Then, the scum is collected by scraping the scum pipe.

The apparatus scrapes sludge and scum in one direction, and realizes prevention of scraping. As an example, there is the following Patent Document 1. In this device, in order to simplify the power source, the power source for driving the sludge scraping operation and the scum scraping operation is made one, and the sludge scraping device and the scum scraping device are linked. Linked.
JP 2006-61876 A

  Here, it is preferable that the tank bottom of a sedimentation basin such as a sewage treatment facility is inclined toward the sludge pit so that the sludge can be easily carried to the sludge pit. At this time, the sludge scraping device needs to reciprocate on a track inclined along the tank bottom. On the other hand, the scum scraping device needs to reciprocate on a horizontal track along the water surface so that the floated scum can be suitably scraped. Thus, when the tank bottom is inclined, it is necessary to reciprocate the sludge scraping device and the scum scraping device along tracks that are not parallel to each other.

  However, in the above-described conventional apparatus, the sludge scraping apparatus and the scum scraping apparatus are merely rigidly linked, and thus there is a problem that the apparatus cannot be applied when the tank bottom is inclined.

  The present invention has been made in view of the above circumstances, and even when the bottom of the tank is inclined, the mechanism for scraping the deposit and the mechanism for scraping the levitated object are linked and interlocked. An object of the present invention is to provide a scraping device for deposits and levitated objects that makes it possible.

  The deposit and levitated scraping device according to the present invention supports the deposit scraping blade for scraping the deposit on the bottom of the tank in a swingable manner, and is capable of reciprocating along the bottom of the tank. While supporting the gantry and the floating blade for floating object that rakes the levitated material on the water surface, the second gantry that can reciprocate along the water surface and the reciprocating motion of the first gantry And a connecting mechanism for connecting the first frame and the second frame so as to absorb the vertical displacement of the first frame while moving the second frame horizontally. And

  In this apparatus, since the displacement in the vertical direction of the first gantry can be absorbed by the connecting mechanism, when the tank bottom is inclined, the first gantry is reciprocated along the inclination, The second frame can be interlocked so as to reciprocate in the horizontal direction along the water surface without being displaced in the vertical direction. In this way, even when the tank bottom is inclined, the levitated scraping mechanism and the deposit scraping mechanism can be linked and linked to each other. It is possible to achieve a balance.

  The coupling mechanism includes a cylindrical body that is erected or suspended vertically from one of the first and second frames, and a vertical body that is vertically erected or suspended from the other of the first and second frames. And a rod inserted through the cylinder. According to this configuration, the cylinder or rod provided on the first gantry urges the rod or cylinder provided on the second gantry in the lateral direction, thereby reciprocating the first gantry. The second frame can be moved in the horizontal direction in conjunction with the movement. At this time, the vertical displacement of the first gantry can be absorbed by moving the rod up and down in the cylinder.

  According to the present invention, even if the bottom of the tank is inclined, the deposit and the levitating that can link and interlock the mechanism of the deposit scraping and the mechanism of the levitating scraping. An object scraping device can be provided.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a deposit and levitated scraping device according to the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is an overall view of a scraping device for sediment and levitated material as viewed from the side, and FIG. .

  The scraping device of this embodiment includes a sludge scraping unit 1 that scrapes sludge (sediment) accumulated on the tank bottom 10b of the tank 10 toward the sludge pit 10a, and a scum (floating) that floats on the water surface 11 of the tank 10. And a scum scraping portion 2 that scrapes the object toward the scum pipe 20.

  The sludge scraping unit 1 is a sludge scraping platform (first sludge scraping blade) that supports a sludge scraping flight (sediment scraping blade) 12 that swings sludge in a horizontal direction so as to be swingable at a predetermined interval. (Base) 30 and a driving device 50 for reciprocating the scraper base 30 along the tank bottom 10b. In the present embodiment, the direction toward the sludge pit 10a is defined as the forward movement direction, and the direction away from the sludge pit 10a is defined as the backward movement direction.

  As shown in FIG. 1 and FIG. 2, the scraper base 30 has two parallel drive direction members 21 extending in the longitudinal direction of the tank 10 and a constant interval in a form perpendicular to the drive direction member 21. And a plurality of parallel members 22 installed in the. Further, as shown in FIG. 3, the driving direction member 21 and the parallel member 22 are coupled by screwing the coupling plate 21a and the coupling plate 22a connected to each other to form a ladder shape. .

  Main rollers 24 are installed at both ends of the parallel member 22 and can rotate around the axis. A support arm 25 is swingably connected to both ends of the parallel member 22 inside the main roller 24, and a sludge scraping flight for scraping the sludge accumulated on the tank bottom 10b at the tip of the support arm 25. 12 is installed. The coupling plate 22a connected to the parallel member 22 is provided with a protrusion-like stopper 26, and the sludge scraping flight 12 is in a state where the sludge scraping flight 12 is suspended vertically below the parallel member 22 as the first swing position. Even if a reaction moment is applied during the sludge scraping operation, it does not swing to its return side (right side in FIG. 1).

  A bar 23 extending from the support arm 25 to the same length as the main roller 24 is provided below the main roller 24 installed on the support arm 25, and the tip of the bar 23 extends around the axis of the bar 23. A rotatable sub-roller 27 is provided. The bar 23 and the auxiliary roller 27 are provided on each support arm 25.

  As shown in FIGS. 1 and 2, the drive device 50 includes a drive portion having a motor 51 that can rotate in forward and reverse directions, a chain 52 that transmits power by the motor 51, and a sprocket 53a to which the chain 52 is connected. And have. The drive direction member 21 of the scraping base 30 is provided with a rack 21b for converting the transmitted driving force into a reciprocating motion in the horizontal direction. The rack 21b is engaged with the sprocket 53b. Is reciprocated in the horizontal direction in the figure. Thereby, the sludge scraping part 1 can be reciprocated.

  Moreover, the sludge scraping part 1 is provided with the guide unit 80 provided in the side wall of the tank 10 along the reciprocating direction of the scraping stand 30, as shown in FIGS. The guide unit 80 has a main guide rail 82 and a sub guide rail 83. The main guide rail 82 has a substantially U-shaped cross section, and the groove is open toward the scraper 30. The main roller 24 can reciprocate with the main guide rail 82 being always fitted, whereby the sludge scraping flight 12 can be reciprocated and the sludge scraping operation can be performed. As shown in FIGS. 2 and 3, the height of the main guide rail 82 from the tank bottom 10 b is such that when the support arm 25 of the scraping base 30 is in the first swing position, the sludge scraping flight 12. The lower end of the tank is so high that it almost reaches the tank bottom 10b.

  The sub guide rail 83 exists in parallel and immediately below the main guide rail 82, has a substantially U-shaped cross section similar to the main guide rail 82, and opens in the direction of the scraper 30. The height from the bottom surface of the sub guide rail 83 is set to be higher than the position of the sub roller 27 when the support arm 25 is in the first swing position, and is supported via a lower guide flap 85 described later. The auxiliary roller 27 of the arm 25 is accommodated in the groove of the auxiliary guide rail 83 (imaginary line in FIG. 3) and can be guided. The main guide rail 82 may be omitted by using the upper surface of the sub guide rail 83 as the main guide rail.

  The lower flange 83a of the sub guide rail 83 is provided with an opening 84 through which the sub roller 27 can be taken in and out as shown in FIGS. The openings 84 are provided in the same distance as the horizontal installation intervals of the parallel members 22 of the scraper 30, and are formed in the reciprocating direction by one more than the number of installation of the parallel members 22.

  Further, as shown in FIG. 4, the guide unit 80 has each opening portion on the backward direction side of the opening portion 84 in the lower flange 83a of the sub guide rail 83, that is, in the vicinity of the edge far from the sludge pit 10a. A plate-like lower guide flap 85 extending downward from 84 is provided. The lower guide flap 85 has a size corresponding to the opening 84 and is swingable in the vertical direction, and is pivotally supported on the lower side far from the sludge pit 10a.

  Then, the lower guide flap 85 has a subsidiary by a stopper 86 for restricting the lower guide flap 85 from swinging downward beyond a predetermined angle from a horizontal position and a tension spring 87 for biasing the lower guide flap 85 downward. As long as the external force from the roller 27 is not received, the roller 86 is positioned by the stopper 86 so as to face downward. The stopper 86 is installed on the sub guide rail 83, and the tension spring 87 is connected to the sub guide rail 83 and the lower guide flap 85. The tension spring 87 may be omitted, and the lower guide flap 85 may be operated by its own weight.

  Here, the predetermined angle is the state where the first swinging position is set, and the sub roller 27 contacts the lower surface of the lower guide flap 85 while the sludge scraping flight 12 is moving in the forward movement direction. This is an angle at which the sub roller 27 can contact the upper surface of the lower guide flap 85 in the backward movement direction.

  As shown in FIG. 5, when the sub-roller 27 installed on the support arm 25 of the sludge scraping portion 1 comes into contact with the upper surface of the lower guide flap 85 in the state of being set at a predetermined angle during the backward movement. Smoothly guides the auxiliary roller 27 into the auxiliary guide rail 83 along the lower guide flap 85. Similarly, during the forward movement to enter the scraping operation, the sub roller 27 that has moved in the sub guide rail 83 is smoothly guided out of the sub guide rail 83 along the upper surface of the lower guide flap 85.

  Further, an upper guide flap 88 is installed on the forward side of the opening 84 of the lower flange 83a of the sub guide rail 83, that is, on the side close to the sludge pit 10a. The upper guide flap 88 is large enough to cover the opening 84, is pivotally supported on the forward movement side of the lower flange 83a, and can swing up and down. When no external force is applied to the upper guide flap 88, the upper guide flap 88 is normally in contact with the upper flange 83b and cannot swing upward from there. Further, when the sub roller 27 that has moved in the sub guide rail 83 from the forward side passes, the upper guide flap 88 is pushed down by the sub roller 27 and swings downward as shown in FIG. And if the upper side guide flap 88 contacts the lower side guide flap 85 in the form which block | closes the opening part 84, it will not rock | fluctuate below it. At this time, since the depressed upper guide flap 88 blocks the opening 84, the sub roller 27 can pass through the opening 84, and when the sub roller 27 passes through the opening 84, it is shown in FIG. Thus, it is pushed back by the compression spring 89 to return to the normal state and comes into contact with the upper flange 83b. In addition, it replaces with the compression spring 89 and you may make it operate | move by installing a counterweight in the upper side guide flap end part.

  Further, when the movement direction is switched again to the forward movement direction, the upper guide flap 88 comes into contact with the upper flange 83b and cannot swing further upward, so that the sub roller 27 moves and moves out of the sub guide rail 83. When being guided downward, the upper guide flap 88 blocks the traveling direction of the secondary roller 27, so that the secondary roller 27 can be more smoothly guided out of the secondary guide rail 83 (down). .

  Next, the scum scraping portion 2 will be described. FIG. 8 is an enlarged side view showing a part of the scum scraping portion 2, and FIG. 9 is a plan view of the scum scraping portion 2. As shown in FIGS. 8 and 9, the scum scraping portion 2 supports a scum scraping flight (floating object scraping blade) 72 that scums the scum so that it can swing at a plurality of fixed intervals in the horizontal direction. A dedicated scraper base (second base) 60 is provided.

  The scraper 60 has two drive direction support frames 61 arranged in parallel along the side wall of the tank 10, and two parallel support frames 62 installed perpendicular to the drive direction support frame 61. ing. A guide rail 63 having a substantially U-shaped cross section is installed on the side wall of the tank 10, and the groove opens in the direction of the scraper 60.

  In addition, three support shafts 70 are installed on the driving direction support frame 61 of the scraper 60. The support shaft 70 is installed in parallel with the parallel support frame 62 and is installed at both ends and the center of the drive direction support frame 61. Wheels 71 are rotatably installed at both ends of the support shaft 70. The wheel 71 is accommodated so as to be able to move in the groove of the guide rail 63 described above, and can move along the side wall of the tank 10.

  Support arms 64 are installed at both ends of the support shaft 70 at both ends inside the wheel 71. The support arm 64 is swingably supported by the support shaft 70 and is installed so as to hang vertically by its own weight in a normal state. A scum scraping flight 72 for scraping the scum is installed at the tip of the support arm 64. As shown in FIG. 8, the scum scraping flight 72 moves the scum S on the water surface 11 and pushes it in the direction of the scum pipe 20 as shown in FIG. When moving in the direction, as shown in FIG. 10, the scum S is not scraped back away from the water surface 11. Further, the support shaft 70 is provided with a stopper (not shown) so that the support arm 64 does not swing further in the forward movement direction when the support arm 64 is suspended vertically, and the scum scraping flight 72 scrapes the scum. It is prevented from being pushed back in the forward movement direction.

  As shown in FIG. 10, three blades are installed on the support arm 64. Three blades, a rear blade 73a in the forward direction, a front blade 73b in the backward direction, and an upper blade 73c in the vertically upward direction, are formed in a cross shape when viewed from the side. Further, a connecting member 75 is attached to the upper blade 73c, and the upper blade 73c provided on each support arm 64 is connected to be swingable. A hooking portion 74 is further bent at the tip of the rear blade 73a of the support arm 64 on the most forward side. The cam 76 is provided on the shaft extending from the driving direction support frame 61 on the most forward side of the scraping base 60, and the support arm 64 on the most forward side is inclined so that the scum scraping flight 72 moves from the water surface 11. The hooking portion 74 of the rear blade 73a is fixed in a separated state.

  As shown in FIGS. 1 and 10, the upper blade 73 c of the support arm 64 on the most forward side is provided on the side wall of the tank 10 in the middle of the scum scraping portion 2 continuing to move in the backward movement direction and reaching the retreat limit position. A pull-up bar 77 for tilting the support arm 64 is provided so that the scum scraping flight 72 is separated from the water surface 11. When the scum scraping portion 2 moves in the backward movement direction, the upper blade 73c engages with the pulling bar 77 and the support arm 64 swings. In this state, the cam 76 is placed on the hooking portion 74 of the rear blade 73a. By fitting, the support arm 64 is supported in an inclined state, and the scum scraping flight 72 is held in the retracted state as it is. At this time, since all the support arms 64 are connected by the connecting member 75, all the scum scraping flights 72 are similarly retracted in synchronization.

  When the moving direction of the scum scraping portion 2 changes from the forward movement to the backward movement at the forward limit position of the scraper 60, the cam 76 is rotated, and as shown by the broken line in FIG. 11, the rear blade 73a The engagement with the hook portion 74 is released. As a result, the support arm 64 is rotated by its own weight, the support arm 64 is vertically suspended, the scum scraping flight 72 reaches the water surface 11, and the scum can be scraped.

  The sludge scraping platform 30 and the scum scraping platform 60 are coupled by a coupling mechanism 90 so as to reciprocate in conjunction with each other. As shown in FIG. 12, the coupling mechanism 90 has a rod 92 and a cylinder 94. The rod body 92 is suspended vertically from the four corners of the scraping base 60 for scraping the scum. On the other hand, the cylindrical body 94 is erected in the vertical direction from the four corners of the scraper 30.

  The tip of the rod 92 is slidably inserted into the cylinder 94. The rod 92 may have a cylindrical shape. Further, the rod body 92 may be erected on the cradle 30 and the cylinder 94 may be suspended from the cradle 60.

  As described above, since the rod body 92 is slidably inserted into the cylindrical body 94, when the scraper base 30 is driven by the driving device 50 and reciprocates in the lateral direction, it is erected on the scraper base 30. The cylindrical body 94 urges the rod body 92 suspended from the cradle 60 in the lateral direction, and in conjunction with the reciprocating motion of the cradle 30 for sludge scraping, The scraper 60 can be moved in the lateral direction. At this time, the rod 92 moves up and down in the cylinder 94, so that the vertical displacement of the cradle 30 can be absorbed. As a result, as shown in FIG. 13, even when the tank bottom 10 b is inclined, the sludge scraping platform 30 is moved back and forth along the tank bottom 10 b, The scraper 60 can be reciprocated horizontally along the water surface 11. In FIG. 13, for convenience of explanation, the inclination of the tank bottom 10 b is exaggerated and does not necessarily match the actual one.

  Next, the action and effect of such a sludge and scum scraping device will be described.

  First, as shown in FIG. 14, a description will be given from a state in which the scraping base 30 moves back to the retreat limit position, reverses in the forward movement direction, and starts sludge scraping.

  In this state, when the motor 51 of FIG. 14 rotates in the clockwise direction, the sludge scraping portion 1 advances in the forward movement direction, the sub roller 27 comes out of the opening portion 84 and separates from the sub guide rail 83, and the support arm 64 rotates. The sludge scraping flight 12 can move up the sludge by moving to the first swing position. When the motor 51 continues to rotate in the clockwise direction, the sludge scraping flight 12 scrapes the sludge and sends the sludge in the forward movement direction. At this time, since the lower guide flap 85 can swing upward, when passing through the adjacent lower guide flap 85, as shown in FIG. Can be pushed up and passed through, and the sludge can be scraped as it is and sent to the forward side.

  When the support arm 25 passes through the opening 84, the state shown in FIG. 1 is reached, and the motor 51 is rotated counterclockwise to start the backward operation. In the backward operation, when the sub roller 27 reaches the opening 84 again and contacts the lower guide flap 85, the sub roller 27 is guided upward along the lower guide flap 85 as shown in FIG. At the same time, the sludge scraping flight 12 together with the support arm 25 also moves upward to leave the tank bottom 10b, and the sludge is not scraped back or rolled up.

  The sub roller 27 guided into the sub guide rail 83 from the opening 84 continues to move as it is, and is guided in the sub guide rail 83 to reach the adjacent opening 84.

  When reaching the adjacent opening 84, the sub roller 27 reaches the upper guide flap 88. Since the upper guide flap 88 can swing downward, as shown in FIG. 6, if the sub-roller 27 continues to move, the upper guide flap 88 can be pushed down to pass. Further, when the upper guide flap 88 is pushed down to the maximum by the sub roller 27, the upper guide flap 88 closes the opening 84, so that the sub roller 27 does not fall down from the sub guide rail 83. The auxiliary roller 27 is smoothly guided. Then, after the sub-roller 27 has passed through the opening 84, the upper guide flap 88 is quickly returned to the normal position by the compression spring 89, as shown in FIG.

  When passing through the opening 84, the state shown in FIG. 14 is reached, the motor 51 rotates clockwise, and returns to the forward movement again. Therefore, the auxiliary roller 27 reaches the opening 84 again, is guided by the lower guide flap 85, and is smoothly guided in the outward (downward) direction of the auxiliary guide rail 83.

  By a series of these movements, the sludge scraping flight 12 is lowered to the first swinging position during the forward movement in the sludge scraping state, and the sludge is scraped, and the sludge scratching flight is performed in the backward movement not in the sludge scratching state. It is possible to prevent the deposit 12 from being scraped in the reverse direction and wound up by retreating 12 up to a predetermined position.

  In conjunction with the reciprocating motion of the sludge scraping portion 1 described above, the scum scraping portion 2 reciprocates. As shown in FIG. 1, the description starts from a state in which the scum scraping portion 2 reaches the forward limit position and enters a backward operation, and the scum scraping flight 72 descends to the water surface 11 and scrapes the scum. In the forward limit position, as shown in FIGS. 1 and 8, the support arm 64 hangs vertically, and the scum scraping flight 72 can scrape the scum on the water surface 11. In this state, when the sludge scraping base 30 is moved in the backward movement direction by the driving device 50, the scum scraping base 60 is moved in conjunction with the scraping base 30 by the connecting mechanism 90. The At this time, the three scum scraping flights 72 inserted into the water surface 11 scrape the scum toward the scum pipe 20.

  Then, on the way to the retreat limit position, as shown in FIG. 10, the upper blade 73c provided on the support arm 64 hits the pulling bar 77 provided on the side wall of the tank 10, and the support arm 64 is lifted, At the same time, the scum scraping flight 72 also rises from the water surface 11. Then, the cam 76 is engaged with and fixed to the hooking portion 74 at the tip of the rear blade 73a, and the retracted state is obtained.

  When the traveling direction is changed to the forward movement direction, the scum scraping flight 72 continues to move in the forward movement direction while being in the retracted state, but during that time, the scum scratching flight 72 rises from the water surface 11. Therefore, it is possible to move without scraping the scum once scraped.

  When the forward limit position is reached, the cam 76 is rotated as indicated by a broken line in FIG. 11, and the fixed state of the support arm 64 is released. As a result, the scum scraping flight 72 returns from the retracted state to the normal state, reaches the water surface 11 again, and returns to a state where the scum can be scraped.

  Such a series of operations is repeated to scrape sludge and scum, but the tank bottom 10b is inclined toward the sludge pit 10a so that the sludge can be easily fed to the sludge pit 10b. It has been. At this time, the sludge scraping platform 30 needs to reciprocate on an inclined track along the tank bottom 10b. On the other hand, it is necessary for the scraping base 60 for scraping the scum to reciprocate on a horizontal track along the water surface 11 so that the floated scum can be suitably scraped. As described above, when the tank bottom 10b is inclined, it is necessary to reciprocate the scraping base 30 and the scraping base 60 along tracks that are not parallel to each other.

  At this time, in the scraping device of the present embodiment, since the vertical displacement of the scraping base 30 can be absorbed by the coupling mechanism 90 so as not to be transmitted to the scraping base 60, the tank bottom 10b is inclined. In this case, while the sludge scraping base 30 is reciprocated along the inclination, the scum scraping base 60 is moved laterally along the water surface 11 without being displaced in the vertical direction. Can be linked to reciprocate. As described above, even when the tank bottom 10b is inclined, the sludge scraping portion 1 and the scum scraping portion 2 can be linked and interlocked to achieve both the sludge and scum scraping. It becomes possible.

  And since the connection mechanism 90 is comprised with the rod 92 and the cylinder 94, the said effect can be implement | achieved suitably irrespective of a simple structure.

  The sludge and scum scraping device according to the present invention is not limited to the above-described embodiment, and various modifications are possible.

  For example, in the above-described embodiment, the connecting mechanism 90 includes the rod body 92 and the cylindrical body 94. However, the connecting mechanism 90 is provided from the four corners of the sludge scraping platform 30 as shown in FIG. It is good also as a structure provided with the board | plate material 96 standingly installed and the board | plate material 98 suspended from the four corners of the scraping stand 60 for scum scraping. In this case, as shown in FIG. 15, the plate 96 provided on the cradle 30 is provided so as to contact the plate 98 provided on the cradle 60 from the inside in the reciprocating direction, or the cradle A plate material 98 provided on 60 is provided so as to come into contact with a plate material 96 provided on the scraper base 30 from the inside in the reciprocating direction.

  Further, as shown in FIG. 16, the coupling mechanism 90 includes a plate material 96 that is erected from the sludge scraping platform 30 and a plate material 98 that is suspended from the scum scraping platform 60. It is good also as a structure. In this case, as shown in FIG. 16, the plate 96 is sandwiched between a pair of plates 98. A pair of plate members 96 may be provided, and one plate member 98 may be sandwiched between them.

  Further, as shown in FIG. 17, the connecting mechanism 90 includes a plate member 102 erected from the sludge stroking stand 30, a plate member 104 suspended from the scum stroking stand 60, and It is good also as a structure provided with the link 106 which connects these. In this case, as shown in FIG. 17, the upper end of the link 106 is pivotally supported by the plate material 104, and the lower end of the link 106 is inserted into a long hole 102a provided in the vertical direction on the plate material 102 via a projection 106a. , Movably connected in the vertical direction.

  Even in this case, the scraper base 60 is moved in the horizontal direction in conjunction with the reciprocating motion of the scraper base 30 and the vertical displacement of the scraper base 30 is absorbed so as not to be transmitted to the scraper base 60. be able to.

It is the whole view which looked at the scraping apparatus of sludge and a scum from the horizontal direction (it exists in a forward limit position). It is a side surface schematic diagram which shows the scraping apparatus of FIG. 1, and is the II-II arrow directional view of FIG. It is an enlarged view which shows the vicinity of a guide unit. It is a schematic diagram which shows the state of the sludge scraping flight at the time of forward movement. It is a figure which shows the state in which a sub-roller is guided to a lower side guide flap, and the state where sludge scraping flight is moved to a retracted position or returned to a normal position. It is a schematic diagram which shows the state of the sludge scraping flight at the time of a return motion. It is a figure which shows a mode that a sludge scraping flight is located in the position beyond the opening part provided with the flap. It is a side view which expands and shows a part of scum scraping part. It is a top view of a scum scraping part. It is a figure which shows a mode that a scum scraping flight exists in a retracted position. It is a figure which shows a mode that a scum scratching flight is fixed in a retracted position with a cam, or it cancels | releases. It is a figure which shows the connection mechanism which connects the scraping base for sludge scraping, and the scraping base for scum scraping. It is a schematic diagram which shows a mode that the displacement of the up-down direction of the scraping stand for sludge scraping is absorbed by the connection mechanism. It is the whole figure which looked at the scraping device of sludge and a scum from the horizontal direction (it exists in a retreat limit position). It is a figure which shows the modification of a connection mechanism. It is a figure which shows the modification of a connection mechanism. It is a figure which shows the modification of a connection mechanism.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Sludge scraping part, 2 ... Scum scraping part, 10 ... Tank, 10b ... Tank bottom, 11 ... Water surface, 12 ... Sludge scraping flight, 25 ... Support arm, 30 ... Scratching rack for sludge scraping, 60: Scrambling platform for scraping scum, 64 ... support arm, 72 ... scum scraping flight, 90 ... coupling mechanism, 92 ... rod, 94 ... cylinder.

Claims (5)

The deposit for raking blades scrape deposits sloped tank bottom with swingably supporting a first platform which reciprocates along the inclined bottom of the tank,
A second frame that reciprocates along the water surface while supporting the floating blade for floating material that rakes the floating material on the water surface in a swingable manner ;
The first gantry and the second gantry are adapted to absorb the displacement in the vertical direction of the first gantry while moving the second gantry in the lateral direction in conjunction with the reciprocation of the first gantry. and a connecting mechanism for connecting the cradle,
The coupling mechanism is
A member erected vertically from the first gantry and a member suspended vertically from the second gantry, and these members are slidably coupled in the vertical direction, An apparatus for scraping sediment and levitated matter, characterized in that it absorbs vertical displacement caused by reciprocating movement of one gantry along the inclined tank bottom . The coupling mechanism is
A cylinder vertically or vertically suspended from one of the first and second mounts;
A rod that is erected or suspended vertically from the other of the first and second mounts, and at least a tip portion is inserted into the cylindrical body;
The apparatus for scraping deposits and levitated objects according to claim 1, characterized by comprising: The coupling mechanism is
A first plate member erected vertically from the first frame;
A second plate member suspended vertically from the second frame,
One of the first and second plate members is provided so as to be in contact with the other from the inside with respect to the reciprocating direction of the gantry, and is slidably connected in the vertical direction. Item 2. A deposit and levitated scraping device according to item 1. The coupling mechanism is
A pair of first plate members vertically or vertically suspended from one of the first and second mounts;
A second plate member that is erected or suspended vertically from the other of the first and second mounts,
The scraping apparatus for deposits and floats according to claim 1, wherein the second plate member is sandwiched between the pair of first plate members and is slidably connected in the vertical direction. . The coupling mechanism is
A first plate member erected vertically from the first frame;
A second plate member suspended vertically from the second frame;
A link connecting the first plate member and the second plate member;
The upper end of the link is pivotally supported by the second plate member, and the lower end of the link is connected via a protrusion to an elongated hole provided in the upper and lower direction so as to be movable in the vertical direction. The apparatus for scraping sediment and levitated matter according to claim 1, wherein

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