JP4317426B2 - Scraping device for sediment and levitated matter - Google Patents

Description

  The present invention relates to a deposit and a levitated scraping device that can scrape deposits accumulated on the bottom of a tank and can also levitate levitated objects floating on the water surface in the tank.

Conventionally, for example, as a deposit scraping device that efficiently scrapes deposits deposited on the bottom of a tank such as a sedimentation site, a scraping stand having a swinging scraping blade is reciprocated in the tank, During the movement of the platform, in the first state where the scraping blades are suspended, the sediment at the bottom of the tank is scraped in the forward direction and sent to the pit at the end of the forward direction. In order to prevent the deposit on the bottom of the tank from being returned by the scraping blade at the time of return, there is known a scraping device that swings the scraping blade from the first state and separates it from the bottom of the tank. (For example, refer to Patent Document 1).
JP 2003-181209 A

  Here, in the sedimentation place and the like, floating objects such as scum float on the surface of the water in the tank. Therefore, it is required to equip the deposit scraping device with a function of scraping floating objects. .

  The present invention has been made in order to solve such a problem, and it is possible to reduce deposits and levitated materials that can efficiently and reliably scrape debris and levitated materials while reducing costs. An object is to provide a scraping device.

The scraping device for deposits and levitated objects according to the present invention can be swung to the lower side of the scraper , a frame provided on the upper side of the scraper , a frame provided on the upper side of the scraper. When the cradle is moved forward, the bottom sediment of the tank is squeezed in the forward direction in the suspended state, and when the cradle is moved backward, it is swung from the suspended state and separated from the bottom. and a deposit for raking blade which is spaced state, positioned on the upper side of the raking frame, and a linkage mechanism you mechanically communicating motion to the swing of the deposit for raking blades, interlocking mechanism Is a wire-like member that connects a swinging portion that is connected to the scraping blade for floating object and is swingably supported with respect to the frame, and a swinging portion on the side of the scraping blade for deposit If, anda counterweight provided on the swing portion so as to stretch the wire member at all times, raking blade for floating matter is the oscillation of the oscillating portion It is characterized by being infested from the water surface of the tank Te.

  According to such a scraping device for deposits and levitated objects, when the scraping table moves forward, the deposits on the bottom of the tank are scraped and scraped with the scraping blades for deposits hanging downward. At the time of return of the gantry, the scraping blade for deposit is swung from the suspended state and separated from the bottom of the tank, while the swaying blade for floating material located on the upper side of the cradle is When it appears on the surface of the tank mechanically interlocking with the rocking blades for deposits, and appears on the surface of the tank, the surface floats up and sinks below the surface of the tank. When it is, it is in a state of being separated from the water surface of the tank. For this reason, there is no scraping back of the deposit by the scraping blade for deposit, and no scraping back of the floating material by the scraping blade for floating material, and the deposit and the floating material are scraped smoothly. In addition, there is no need for power for the scraping blades for floating objects.

Here, raking blade for floating matter is swingably supported on the upper side of the raking frame, since a structure infested from the water surface in accordance with the swinging, generally vertical raking blade for floating object is relative to the water surface Compared with the structure that appears and disappears, the resistance when moving in the state of being submerged under the surface of the water (at the time of non-scraping) is reduced and the scraping is surely eliminated.

  For example, when drainage containing sludge or the like is supplied into the tank, most of the sediment such as sludge remains on the upstream side, and the levitated material moves toward the downstream side of the tank. Therefore, the sediment discharge position is set on the upstream side of the tank, the floating material discharge position is set on the downstream side of the tank, and the floating scraping blade is in a suspended state. And the submerged submergence head toward the upstream side of the tank is submerged, and the scraping blades for deposits are separated and appear on the water surface when the rear counter unit moves downstream of the tank. The deposit is more efficiently scraped to the deposit discharge position, and the levitated object is more efficiently scraped to the levitated discharge position.

  Further, it is preferable that a plurality of combinations of the scraping blade for deposits and the flying blade for mechanically interlocking with the depositing blade are provided in the reciprocating direction of the scraping base.

  When such a configuration is adopted, each of the deposited scraping blades oscillated in parallel and mechanically interlocked with each of the deposited scraping blades, Each of the scraping blades for objects appears and disappears from the surface of the water, and the deposits and floating objects are shared by the parallel scraping blades and sequentially scraped to the next scraping blade. For this reason, the distance of the reciprocating motion of the scraper is shortened.

  In addition, a plurality of the scraping blades for deposits and the scraping blades for floating objects are arranged in parallel in the reciprocating direction of the scraping platform, and the scraping blades for deposits and the scraping blades for floating objects that are mechanically linked to the scraping blades. It is preferable that at least one combination of blades is provided, and a connecting means for interlocking the operations of the flying object scraping blades is provided.

  When such a configuration is adopted, each of the deposited scraping blades arranged in parallel swings and mechanically interlocks with the swing of at least one depositing scraping blade. The floating blade for floating object that forms a pair with the scraping blade appears and disappears from the surface of the water, and other floating blades for floating object that are arranged in parallel with the rising and falling of the scraping blade for floating object are connected to the surface of the water by the connecting means. The deposits and floating objects are distributed by the parallel scraping blades and are sequentially scraped to the next scraping blade. For this reason, the distance of the reciprocating motion of the scraping base is shortened, and by this connecting means, the swinging of the deposit scraping blade is mechanically transmitted to the floating scraping blade and the floating scraping blade. The interlocking mechanism that causes the water to appear and disappear from the water surface is reduced.

  As described above, according to the deposit and levitated scraping device according to the present invention, power for the levitating scraping blade is not required and the cost is reduced, and there is no scraping of the deposit and levitated object. Sediment and levitated materials are scraped efficiently and reliably, and in addition, the movement of the scraping blade for sediment below the surface of the water is mechanically interlocked with the swing of the scraping blade for sediment from the surface of the water. This is confirmed by the movement of the scraping blades for floating objects that appear and appear, and the reliability is improved.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a deposit and levitated scraping device according to the present invention will be described with reference to FIGS.

  1 and 2 are each a diagram showing a scraping device for deposits and levitated objects according to an embodiment of the present invention. FIG. 3 is an enlarged view of the vicinity of the flight and scum plate mounting portion in FIG. FIGS. 5 and 5 are explanatory diagrams of each state of the flight, FIGS. 6 and 7 are explanatory diagrams of the respective states of the scum plate, and FIGS. 8 and 9 are cross-sectional views of the scraping blade connecting means for floating objects.

  As shown in FIG. 1, the scraping apparatus 1 for deposits and floating objects according to the present embodiment is disposed, for example, in a sedimentation basin or the like of a sewage treatment plant, and sludge or the like deposited on a bottom surface 10b of a tank (sedimentation basin) 10. The scum or the like floating on the water surface 3 of the tank 10 is raked toward the scum pipe 7 (the floating material discharge position). is there.

  The scraping device 1 for deposits and floats is supported by a scraping base 20 that reciprocates in the tank 10 and swingable on the lower side of the scraping base 20, and is deposited on the bottom surface 10b of the tank 10. A flight (scraping blade for deposits) 12 for scraping the deposit, a driving device 50 for reciprocating the scraping platform 20 substantially parallel to the bottom surface 10b of the tank 10, and an upper side of the scraping platform 20 And a scum plate (floating object scraping blade) 15 that slidably floats floating on the water surface 3 supported swingably on the upper side of the frame 29. ing.

  The tank 10 has a rectangular shape as shown in FIGS. 1 and 2, and sewage is supplied from the left side of FIG. 1, and a sludge pit 10 a is provided at the bottom of the sewage supply side of the tank 10. On the water surface 3, a scum pipe 7 that can rotate around an axis is placed horizontally across the entire width of the tank 10. The scum pipe 7 has an opening extending in the longitudinal direction on the peripheral surface and has a C-shaped cross section.

  As shown in FIGS. 1-3, the structure and operation | movement of the scraper 20 which reciprocates in the flow direction of the tank 10, the guide unit 80 which supports this scraper 20 and guides reciprocation, and the flight 12, This is the same as that described in JP-A-2003-181209. Specifically, the stroking table 20 includes a plurality of main roller support shafts 22 each having a main roller 24 constituting a wheel of the stroking table 20, and two parallel driving direction members 21 extending in the flow direction. As shown in FIG. 3, the main roller support shaft 22 and the driving direction member 21 are formed in a ladder shape by intersecting at right angles with each other via coupling plates 21a and 22a. 1-3, as shown in FIG. 1 to FIG. 3, the upper part of the guide unit 80 having two upper and lower rails each having a substantially U-shaped cross section installed on a pair of side walls 10c parallel to the flow direction of the tank 10. The main guide rail 32 is accommodated and supported, and its traveling is guided. As shown in FIG. Transmitted to the gantry 20,該掻 nearest frame 20 to reciprocate.

  When this scraping base 20 moves forward, as shown in FIGS. 3 and 4, it is connected to the main roller support shaft 22 of the scraping base 20 via a flight arm 25 that can swing around this axis. The sub-roller over which the deposited flight 12 rakes up the deposit accumulated on the bottom surface 10b of the tank 10 toward the sludge pit 10a at the first swing position where the flight 12 hangs down, and projects from the flight arm 25 toward the side wall 10c. As shown in FIGS. 1 and 4, 27 is swingably provided on the lower surface of the sub guide rail 33 installed in the lower stage of the guide unit 80, and has an inclined surface of approximately 45 degrees below the sub guide rail 33. After the lower guide flap 35 projecting so as to form is pushed away and passed under the opening 44 formed on the lower surface of the sub guide rail 33 and adjacent to the forward movement direction, the motor 51 rotates in the reverse direction (illustrated). And the auxiliary roller 27 moves up along the inclined surface of the lower guide flap 35, enters the auxiliary guide rail 33 through the opening 44, and the flight arm 25. Is rotated in the clockwise direction in the drawing to be in an inclined state, and as shown in FIG. 5, the flight 12 is separated from the bottom surface 10b to scrape the accumulated deposits in the reverse direction (reverse direction). The upper guide flap is installed on the lower surface of the sub guide rail 33 so as to be swingable and extends upward when the cradle 20 is moved back without returning and the sub roller 27 approaches the opening 44 adjacent in the return direction. 36 is pushed down and passes over the opening 44, and when the sub roller 27 passes over the opening 44, the motor 51 further rotates in the reverse direction and rotates clockwise in the figure, and the scraper 20 starts to move forward again. Sub-roller 27 is Guided descends along the inclined surfaces of the side guide flap 35 to the auxiliary guide rail 33 outside, such a series of operations are repeated. As shown in FIGS. 3 and 4, the fixing plate 22a fixed to the main roller support shaft 22 is provided with an arm stopper 43 that prevents further rotation in the counterclockwise direction from the suspended state of the flight arm 25. The lower guide flap 35 is provided with a stopper (not shown) that prevents further rotation in the counterclockwise direction shown in the figure from the inclined state, as shown in FIGS. The guide flaps 35 and 36 are respectively provided with springs 47 and 49 for smoothly returning from the position rotated by the sub roller 27 to the original position (position shown in FIGS. 4 and 5). A weight may be provided in place of the springs 47 and 49.

  The flight 12 is swung by the operation of the series of the cradle 20 and the sub roller 27, and the deposits scraped to the sludge pit 10a side by a predetermined section (distance between the openings 44, 44) At the position on the sludge pit 10a side from the guide flap 35, it remains in a state where it has been temporarily accumulated, and then, after returning to the sludge pit 10a side and returning, it is further moved to the sludge pit 10a side. The section is scraped, and the deposit is forwarded by one flight 12 every predetermined section, and is scraped to the sludge pit 10a and discharged.

  Next, a configuration that characterizes the present embodiment will be described. In addition to the above configuration, the depositing and floating object scraping device 1 of the present embodiment, as shown in FIGS. 1 and 2, is a scum plate 15 for scraping floating objects such as scum floating on the water surface 3. A frame 29 provided on the stroking base 20 for installing the scum plate 15, and an interlocking mechanism that causes the scum plate 15 to appear and disappear from the water surface 3 of the tank 10 mechanically in conjunction with the swing of the flight 12. And a mechanism 9.

  The frame body 29 is disposed on the upper side of the scraper 20 and includes the scum post 2, the scum bar 13, and the connecting shaft 11 as shown in FIGS. 1 to 3. A pair of scum posts 2 are provided upright apart from each other on the end side of each main roller support shaft 22. The scum bar 13 is horizontally mounted on the upper ends of the pair of scum posts 2, and the main roller support shaft 22, the scum post 2 and the scum bar 13 constitute a rectangular frame 37. A pair of connecting shafts 11 extending in the reciprocating direction and spaced apart in the width direction of the tank 10 connects the upper portions of the plurality of frames 37. Adjacent scum posts 2 are connected to each other via intersecting tie rods 14 in order to increase rigidity.

  As shown in FIGS. 1 and 3, the connecting shaft 11 of the frame body 29 has a fixed shaft as shown in FIGS. 3 and 6 at a position separated from the connecting position with the scum bar 13 by a predetermined distance in the reciprocating direction. 4 are connected to the side wall 10c.

  As shown in FIGS. 3 and 6, the fixed shaft 4 is provided with a floating object scraping portion (swinging portion) 8 mainly including a scum plate 15 so as to be swingable. The levitated scraping portion 8 includes a pipe 5 that is externally attached to the fixed shaft 4 and supported so as to be swingable, and a scum plate 15 that is connected to the pipe 5 via a scum plate mounting plate 6. Yes. As shown in FIG. 2, the scum plate 15 is configured to have substantially the same width as the width of the water surface 3 of the tank 10, and the cross-sectional shape is substantially L-shaped as shown in FIG. It is said that.

  As shown in FIGS. 3 and 6, the interlocking mechanism 9 connects the levitated object scraping portion 8 including the scum plate 15, and the levitated object scraping portion 8 and the flight arm (the swinging portion of the flight 12) 25. A wire 18 and a counterweight 17 provided on the levitated scraping portion 8 so as to always stretch the wire 18 are provided. The upper end portion of the wire 18 is connected to the pipe 5 of the levitated scraping portion 8 via the second arm 19, and the lower end portion thereof is connected to the first arm 26 as shown in FIGS. 3 and 4. And connected to the flight arm 25. As shown in FIG. 6, the second arm 19 is attached to the pipe 5 so as to form a predetermined angle clockwise with respect to the scum plate 15.

  As shown in FIGS. 3 and 6, the counterweight 17 is connected to the pipe 5 via the counterweight arm 16, and a rotational moment is applied to the counterweight 17 in a direction in which the wire 18 is always pulled. Then, the interlocking mechanism 9 including the scum plate 15 and the floating object scraping portion 8 provided with the counterweight 17, the wire 18 and the like causes the flight 12 and the scum plate 15 to be machined as shown in FIGS. Work together. The scum plate 15 is submerged under the water surface 3 when the flight 12 is suspended from the first swing position.

  Further, in the present embodiment, there is provided connecting means for interlocking the operations of a plurality of scum plates 15 arranged side by side in the reciprocating direction of the scraper 20. As shown in FIGS. 6, 8 and 9, the connecting means includes a connecting arm 34 fixed to the pipe 5 and an end of the connecting arm 34 so as to swingably support the connecting arm 34. A pin 41, a connecting member 40 that supports both ends of the pin 41, and a retaining ring 42 for preventing the pin 41 from coming off from the connecting member 40, as shown in FIGS. A connecting rod 38 is connected to both sides of the connecting member 40 in the reciprocating direction, and the connecting arms 34 adjacent to each other in the reciprocating direction of the scraper 20 are connected to each other via the connecting rod 38. Thereby, as shown in FIG. 1, each floating thing scraping part 8 mutually interlock | cooperates.

  Further, in the present embodiment, the levitated object scraping portion 8 is also provided on the downstream side (right side in the drawing) of the scum pipe 7 and connected to the upstream levitated object scraping portion 8 via the connecting rod 38. . The floating surface scraping portion 8 on the downstream side swings similarly to the floating surface scraping portion 8 on the upstream side. However, since the direction in which the floating material is scraped is different, the upstream scum plate 15 is submerged. The downstream scum plate 15 is attached to the downstream floating object scraping portion 8 so as to stand upright with respect to the water surface 3 and appear on the water surface 3.

  According to the deposit and levitated scraping device 1 configured in this way, the deposit deposited on the bottom surface 10b of the tank 10 is scraped to the sludge pit 10a by the forward feed by the flight 12, as described above. .

  At this time, as shown in FIG. 4, the flight 12 is located at the first swing position, and as shown in FIG. 6, the scum plate 15 having a predetermined angle with the second arm 19 is in a submerged state. In this state, it moves toward the sludge pit 10 a together with the cradle 20, so that floating objects such as scum are not scraped back to the opposite side of the scum pipe 7.

  During this movement, the scum plate 15 is inclined and submerged with respect to the forward movement direction of the scraper 20. For this reason, as compared with the configuration in which the scum plate 15 is submerged substantially perpendicularly to the water surface 3, resistance during movement in a state where the scum plate 15 is submerged under the water surface 3 (when not scraped) is reduced and reliably. There is no scraping. At this time, the scum plate 15 on the downstream side of the scum pipe 7 is in a state of appearing on the water surface 3, and the opening of the scum pipe 7 faces the downstream side. Accordingly, the levitated material downstream of the scum pipe 7 is smoothly discharged to the scum pipe 7 by the scum plate 15 downstream of the scum pipe 7.

  Next, the scraper 20 starts to move backward, and the flight 12 is rotated clockwise from the first swung position shown in FIG. 4 and separated from the bottom surface 10b as shown in FIG. Thus, the first arm 26 also rotates clockwise in the drawing to draw the wire 18 downward.

  At this time, due to the downward movement of the wire 18, the second arm 19 is rotated downward from the position shown in FIG. 6 in the clockwise direction, and the scum plate 15 is moved from the position shown in FIG. As shown in FIG. 7, it turns upright vertically and appears on the water surface 3. Furthermore, since the scum plates 15 arranged in parallel are connected by the connecting means, the scum plates 15 stand up vertically upward in conjunction with each other and appear on the water surface 3. In this state, the cradle 20 continues to move back, and the levitated object floating on the water surface 3 is scraped toward the scum pipe 7 by the scum plate 15 that has appeared on the water surface 3. At this time, the opening of the scum pipe 7 faces the upstream side. Further, the scum plate 15 on the downstream side of the scum pipe 7 is in a state of being submerged in conjunction with the connecting means, and the levitated material on the downstream side of the scum pipe 7 is not scraped back to the downstream side.

  Further, the scraping base 20 continues to move backward, and as shown in FIG. 5, after the front end of the flight 12 passes through the opening 44 adjacent to the backward movement side, it starts moving forward again. The flight 12 is rotated counterclockwise in the figure from the position rotated clockwise in FIG. 5 and returned to the suspended first swing position shown in FIG. 4, and the first arm 26 is also illustrated in FIG. Rotate clockwise. Thereby, the force which pulled the wire 18 downward is relieved.

  Accordingly, as shown in FIG. 7, the counterweight arm 16 is rotated downward, and the levitated scraping portion 8 is rotated counterclockwise from the state in which the scum plate 15 appears on the water surface 3, As shown in FIG. Further, since the scum plates 15 arranged in parallel are connected by the connecting means, the scum plates 15 are submerged in conjunction with each other. On the other hand, the scum plate 15 on the downstream side of the scum pipe 7 appears on the water surface 3 in conjunction with it. By such a series of operations of the scum plate 15, the levitated material is sequentially fed by one scum plate 15 every predetermined section, and is scraped up to the scum pipe 7 and discharged smoothly.

  As described above, in the present embodiment, the deposit and floating material scraping device 1 includes the scum plate 15 that scrapes the floating material such as the scum that floats on the water surface 3 and mechanically interlocks with the swing of the flight 12. Since the interlocking mechanism 9 for moving the scum plate 15 in and out of the water surface 3 of the tank 10 is provided, in addition to the deposit 12 not being raked back by the flight 12, there is no rake back of the levitated matter by the scum plate 15. In addition, the deposits and floating objects are smoothly scraped and discharged, and it is not necessary to separately install a power source for the scum plate 15. For this reason, the cost is reduced and the deposits and floating objects are scraped efficiently and reliably. In addition, the movement of the flight 12 below the water surface 3 is mechanically linked to the swing of the flight 12. Thus, the reliability is improved as confirmed by the movement of the scum plate 15 that appears and disappears from the water surface 3.

  Further, as shown in FIG. 1, for example, when drainage containing sludge or the like is supplied into the tank 10, most of the sediment such as sludge accumulates on the upstream side (the left side in the drawing), and the floating matter flows. Although it rides toward the downstream side of the tank 10, the sludge pit 10a is set on the upstream side of the tank 10 as the deposit discharge position, and the scum pipe 7 is set on the downstream side of the tank as the discharge position of the levitated matter. The sediment is scraped to the sludge pit 10a, and the levitated matter is scraped to the scum pipe 7 more effectively.

  Each of the flights 12 is provided with a plurality of flights 12, and each of the flights 12 is oscillated by this series of operations, and each of the scum plates 15 arranged in parallel is mechanically interlocked with each oscillation of the flight 12. 3, the deposits and levitated matter are shared by the parallel flight 12 and scum plate 15 and scraped sequentially to the next flight 12 and scum plate 15, so that one flight 12 and scum plate 15 In comparison with the case where the entire tank 10 is scraped, the distance of the reciprocating motion of the cradle 20 is shortened.

  Further, since the scum plate 15 is also installed on the downstream side of the scum pipe 7, the levitated objects that have floated on the downstream side of the scum pipe 7 are also scraped well.

  Further, the scum pipe 7 is rotatable, and the direction of the opening of the scum pipe 7 is changed according to the direction in which the scum plate 15 scrapes the floating object, so that the amount of surface water flowing into the scum pipe 7 is reduced. In addition, it is possible to reduce operating costs and the like of the subsequent scum transfer pump (not shown).

  In addition, the levitated object scraping portion 8 is connected to the raking base 20 via the frame 29, and the levitated object scraping portion 8 and the raking base 20 are moved together. There is no need to install dedicated guide rails, etc., making it possible to reduce production costs and local construction costs.

  Moreover, since the chain flight type sludge scraping machine uses the return part of the flight (scraping blade for deposits) to scrape the floating material on the water surface 3, as shown in FIG. When the width of the water surface 3 is larger than the width of 10b, it is impossible to scrape the floating object near the side wall 10c, or as a countermeasure, as described in JP-A-8-267059, It is necessary to install a scum guide for closing the gap between the side wall 10c of the tank 10 over substantially the entire length of the side wall 10c. Since the scum plate 15 and the scum plate 15 are separate parts, the width of the scum plate 15 is substantially the same as the width of the water surface 3 as described above, and the floating object at the side wall 10c can be effectively obtained without installing the scum guide. Raked in It is possible.

  Here, in the chain flight type sludge scraper described in JP-A-8-267059, the flight moving on the water surface 3 is submerged obliquely with respect to the water surface 3 in front of the scum pipe 7, Although it is impossible to approach the scum pipe 7 while standing upright with respect to the water surface 3, in the scraping device 1 for deposits and floating objects according to the present embodiment, the scum plate 15 is upright with respect to the water surface 3. As close as possible to the scum pipe 7, the levitated material is scraped and discharged more reliably than the apparatus described in Japanese Patent Laid-Open No. 8-26759.

  As mentioned above, although this invention was concretely demonstrated based on the embodiment, this invention is not limited to the said embodiment. For example, since the plurality of connecting arms 34 are connected to each other by the connecting rod 38 and the plurality of scum plates 15 are mechanically interlocked, the number of connecting portions by the wires 18 is not limited as long as it is one or more.

  The installation position of the scum plate 15 with respect to the connecting shaft 11 can be freely selected by changing the angles of the scum plate mounting plate 6, the counterweight arm 16, the second arm 19, and the connecting arm 34.

  In the above embodiment, the sub-rollers 27 are installed on each flight arm 25 to swing the flight 12, but the number of sub-rollers 27 installed is one or more and the scum plate 15 is interlocked. It is good also as a structure which mechanically interlocks the parallel flight arms 25 by connecting a connecting rod etc. mutually like a connection means. In the case of such a structure, the number of the guide flaps 35 and 36 that do not contribute to the movement of the auxiliary roller 27 and the auxiliary roller 27 is reduced, and the cost can be reduced and simplified.

It is a front schematic diagram which shows the scraping apparatus of the deposit and levitated material which concern on embodiment of this invention. It is a side surface schematic diagram which shows the scraping apparatus of the deposit and levitated material which concern on embodiment of this invention. FIG. 3 is an enlarged view of the vicinity of a flight and scum plate attachment portion in FIG. 2. It is a schematic diagram which shows the state of the flight at the time of a forward motion. It is a schematic diagram which shows the state of the flight at the time of backward movement. It is a schematic diagram which shows the state of the scum plate at the time of forward movement. It is a schematic diagram which shows the state of the scum plate at the time of backward movement. It is a longitudinal cross-sectional view of the scraping blade coupling means for floating objects. It is the IX-IX arrow line view of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Scraping device of sediment and levitated matter, 3 ... Water surface, 7 ... Scum pipe (discharge position of levitated matter), 8 ... Levitated matter scraping portion (oscillating portion), 9 ... Interlocking mechanism, 10 ... Tank, 10a ... sludge pit (sediment discharge position), 10b ... bottom of tank, 12 ... flight (scraping blade for sediment), 15 ... scum plate (scraping blade for floating material), 17 ... counterweight, 18 ... wire (Wire-like member), 20 ... scraper base, 34 ... connecting arm (frayed object scraping blade connecting means), 38 ... connecting rod (flotation object scraping blade connecting means), 40 ... connecting member (for floating object) Scraping blade connecting means).

Claims (4)

A scraper that reciprocates in the tank;
A frame provided on the upper side of the scraper;
The cradle is supported at the lower side of the cradle, and when the cradle is moved forward, the bottom deposit of the tank is squeezed in the forward direction in the suspended state, and the cradle is moved. At the time of return movement, the scraping blade for deposits that is swung from the suspended state and separated from the bottom ;
Before SL located on the upper portion of the raking frame, and a linkage mechanism you mechanically communicating motion to the swing of the raking blades for the deposit,
The interlocking mechanism is
A swinging portion connected to the scraping blade for floating object and supported swingably with respect to the frame body ;
A wire-like member connecting the swinging portion and the swinging portion on the side of the deposit scraping blade;
A counterweight provided on the swinging part so as to always stretch the wire-like member ,
The scraping device for deposits and floats , wherein the scraping blades for floating objects are caused to appear and disappear from the water surface of the tank by the swinging of the swinging part . The deposit discharge position is set on the upstream side of the tank,
The discharge position of the floating object is set on the downstream side of the tank,
The floating scraping blade is submerged in the forward movement of the scraping base toward the upstream side of the tank when the depositing scraping blade is in the suspended state, and the deposit scraping blade is separated from the separation scraping blade. 2. The apparatus for scraping sediment and levitated matter according to claim 1, wherein the scraping device appears on the water surface when the scraping base is moved back toward the downstream side of the tank.   A plurality of combinations of the deposit scraping blade, the floating scraping blade, and the interlocking mechanism that mechanically interlocks these depositing blades are provided in the reciprocating direction of the scraping base. Item 3. A depositing device and levitating device according to item 1 or 2. A plurality of the scraping blades for deposits and the scraping blades for levitated objects are arranged in parallel in the reciprocating direction of the scraping base,
At least one set of the combination scraping blade, the floating scraping blade, and a combination of the interlocking mechanisms that mechanically interlock these,
The depositing and floating substance scraping device according to claim 1, further comprising a connecting unit that interlocks the operations of the floating blades for floating object.

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