KR101999743B1 - Scum removal apparatus for air-floatation system - Google Patents

Abstract

According to the present invention, a scum removal apparatus for a dissolved-air floatation system comprises: a pair of driving rails installed on an upper portion of an inner wall in a width direction of a treatment tank and extending in forward and backward directions of the treatment tank; a pair of moving cars mounted on the pair of driving rails, respectively and integrally connected to each other by a cart connection frame while driving in the forward and backward directions of the treatment tank; a scrapper configured to move integrally with the cart connection frame and scrap off scum floating on a surface of the treatment tank; and a driving unit having a driving shaft extending in the width direction of the treatment tank, a driving motor mounted on the cart connection frame and configured to rotate the driving shaft around a center shaft in a longitudinal direction of the driving shaft, a pair of driving winches mounted on the pair of moving carts to be able to rotate and having both ends in the longitudinal direction of the driving shaft, fixed and coupled thereto, and a pair of towing wires wound on the driving winches more than once and having both ends in a longitudinal direction, coupled to a front end and a rear end of the treatment tank. According to the present invention, the scum removal apparatus is capable of horizontally moving the scrapper even when one driving motor is used.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a scum removal apparatus for air-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a scum removing device for removing scum on a water surface by transferring a blade by a driving force of a motor. More particularly, the present invention relates to a scum removing device, To a scum removing device.

As the national income increases and the living and living standards are improved, various kinds of wastewater flowing into sewage are increasing. These wastewaters pollute rivers, rivers, and lakes greatly and are becoming social problems.

Generally, a variety of sewage and wastewater treatment plants for purifying various wastewater have been proposed and widely used so far, and the treatment methods most commonly used among wastewater treatment methods are as follows.

When wastewater flows into the sewage treatment plant, firstly, relatively bulky substances such as sand, gravel, wood chips and cans contained in the sewage are removed from the settlement. The wastewater from the gypsum is uniformly mixed in the flow control tank, and the flow load is buffered by the increase or decrease of the wastewater inflow, and the microorganism is maintained in an appropriate environment by transferring the wastewater to the first settling tank by a predetermined amount.

The sewage transferred by a certain amount in the flow control tank removes the heavy material layer and the light material from the initial settling tank. The pollutants in the sewage that have not been removed by sedimentation in the initial settling tank are decomposed by aerobic microorganisms in the aeration tank and the microorganisms and contaminants form flocs and sink in the final settling tank, which is the next process. In the aeration tank, the flocs formed by the aerobic microorganisms are settled again in the final settling tank, and unlike the initial settling tank, clear supersaturation is obtained and discharged to the stream. As described above, the wastewater flowing into the sewage treatment plant where the waste water is treated in several stages is treated to be continuously flowing, and accordingly, many scum floats are generated on the surface of each settling tank.

Such scum is also generated in a large amount in the pressurized floating tank. Generally, the pressurized flotation tank is a flotation tank in which flocs formed by joining foreign substances remaining in the water are mixed when the medicines (such as an alum) are added to the raw water and stirred constantly, and the raw flotted water is introduced into the flotation tank, A water treatment apparatus that cleans water by using a phenomenon in which flocs float to the upper layer when it is combined with air bubbles. Since a large amount of scum is generated even in the pressurized float tank, the generated scum must be effectively removed and discharged.

In order to effectively remove the scum, a scum removing device having various structures has been proposed. The scum removing device currently commercialized includes a scraper which is located above a treatment tank such as a treatment tank or a pressurized floating tank and which is elongated in the width direction of the treatment tank, And a driving motor that winds the tow wire and feeds the scrapers. The driving motor is operated to move the scraper in the longitudinal direction of the treatment tank as the tow wire is wound, The scum is scraped off to the separation wall side.

The conventional scum removing device configured as described above has an advantage that the scum can be scraped off by using the power of the motor. However, as the use period elapses, the pulling wire is extended and the scrapers are completely immersed in the water surface, There is a problem that it can not be scratched properly. In general, it is common to connect a pulling wire to a center portion of a scraper to transfer a scraper. When a pulling wire is connected to a center portion of a scraper, when the pulling wire is wound, There has also been a problem of not scraping all the scum. Of course, if the two driving motors are configured to move the both ends in the longitudinal direction of the scraper, it is possible to prevent the scraper from being twisted, but the manufacturing cost and the maintenance cost are increased.

Further, when the scrapper scraping the scum toward the discharge port side comes into contact with the water surface of the treatment tank when returning to the original position, the scum remaining on the water surface may be returned to the inlet side. Therefore, when the scrapper positioned at the discharge port side is to be returned to the inlet side, it must be positioned so as to be spaced apart from the water surface of the treatment tank. In the conventional scum removing device, the structure of the apparatus for separating the scrapers from the water surface is very complicated, There is also a problem that durability is poor.

In the conventional scum removing device constructed as described above, the scraper can not normally remove the scum even if the driving motor is operated when the traction wire is stretched or broken. However, a separate device for detecting whether the traction wire is slackened or cut off There is a disadvantage that the operator must constantly check the condition of the pulling wire.

KR 10-1773023 B1

Disclosure of Invention Technical Problem [8] The present invention has been proposed in order to solve the above-mentioned problems, and it is an object of the present invention to provide a driving motor in which a scraper can be moved in parallel, Which is capable of automatically stopping the operation of the scum removing device.

In order to accomplish the above object, according to the present invention, there is provided a scoop removing apparatus for a pressurized floating scooter, comprising: a pair of running rails mounted on an inner wall in a width direction of a treatment tank and extending in the front- A pair of traveling bogies that are respectively seated on the pair of running rails and run in the forward and backward directions of the treating tank and are integrally connected by the bogie connecting frame; A scraper moving integrally with the bogie connecting frame and scraping scum floated on the surface of the treatment tank; A driving motor that is mounted on the bogie connecting frame and that rotates the driving shaft about a longitudinal center axis of the driving shaft; and a driving motor mounted on the pair of moving bogies, And a pair of traction wires wound on the driving winch at least once and both ends in the longitudinal direction are coupled to the front end side and the rear end side of the processing tank, ; ≪ / RTI >

The traveling unit includes a hollow tube, a bottom bracket formed in a ring shape and coupled to a lower side of the inner space of the hollow tube, a coupling shaft having an end connected to one end of the traction wire and an other end inserted into the hollow tube, A shaft head formed in a block shape having a larger cross section than the coupling shaft and coupled to the other end of the coupling shaft, and a coil spring compressed between the bottom bracket and the shaft head.

The driving unit further includes a switch installed on the hollow tube to detect whether the shaft head is drawn out. The driving motor receives a signal from the switch when the shaft head is drawn out from the hollow tube, .

The pair of traction wires extend along the front-rear direction of the treatment tank and are disposed on both sides in the width direction of the treatment tank, and the hollow tube is fixedly coupled to the treatment tank so as to stand vertically.

Further comprising: a plurality of mounting frames coupled to inner side walls on both sides in the width direction of the treating tank, the mounting frames being spaced apart from each other in the longitudinal direction of the treating tank; and an H beam coupled onto the plurality of mounting frames, As shown in Fig.

A plurality of downward frames extending downward from the bogie connecting frame, a connection shaft extending in a width direction of the processing tank and coupled in a structure rotatable below the plurality of downframes, A plurality of pivotal links extending on the other side in the longitudinal direction to be coupled to the scraper, a pivoting cylinder coupled to the pivot connection frame for pulling the piston downward, and a pivotable cylinder having one side in the longitudinal direction rotatable on the lower side of the piston And a connecting link for rotating the connecting shaft in the clockwise direction and the counterclockwise direction as the piston is pulled in and drawn out while the other side in the longitudinal direction is fixedly coupled to the connecting shaft.

A rotation elastic means for applying a rotational elastic force to the electric wire in a direction in which the electric wire is wound and a rotary elastic means provided on the plurality of mounting frames to extend in the front and rear direction of the treatment tank And a cable guide rail on which the wire unwound from the electric wire is seated.

The scraper removing apparatus according to the present invention can move the scraper in parallel even if one driving motor is used, freely adjust the angle of the scraper, maintain the tension of the traction wire at a constant level, There is an advantage that the driving motor can be automatically stopped.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a longitudinal sectional view of a scoop removing apparatus for a pressurized floating bed according to the present invention; FIG.
2 is a cross-sectional view of a scrape removing apparatus for a pressurized floating bed according to the present invention.
3 is a longitudinal sectional view showing a combined structure of a moving car and a scraper included in the scoop removing apparatus for a pressurized floating bed according to the present invention.
4 is a perspective view of a traveling unit included in the scoop removing apparatus for a pressurized floating bed according to the present invention.
Fig. 5 is a cross-sectional view showing the seating structure of a moving bogie included in the scoop removing apparatus for a pressurized floating bed according to the present invention.
6 is a cross-sectional view showing a coupling structure of a hollow tube and a fastening shaft included in the scoop removing apparatus for a pressurized floating bed according to the present invention.
7 is a side view showing a shape in which the scraper is rotated by the rotating cylinder;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an apparatus for removing scum according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a longitudinal sectional view of a scraper removing apparatus according to the present invention, FIG. 2 is a transverse sectional view of a scraper removing apparatus for a pressurized floating bed according to the present invention, and FIG. FIG. 4 is a perspective view of a traveling unit included in a scraper for scooping pressurized floating scoop according to the present invention. FIG. 4 is a longitudinal sectional view showing a combined structure of a moving car and a scraper.

The scum removing apparatus for pressurized floating scavenging according to the present invention scrapes the scum floating on the surface of various water treatment tanks (hereinafter collectively referred to as "treating tank 10") such as a settling tank and a pressurized floating tank by using a scraper 340 The scraper 340 has the greatest feature in that it can prevent the scraper 340 from tilting or twisting to one side in the process of scraping scum.

That is, the scoop removing apparatus of the present invention comprises a pair of running rails (130) mounted on the inner wall in the width direction of the treating tank (10) and extending in the front and rear direction of the treating tank (10) A pair of moving trucks 200 mounted on a pair of running rails 130 and traveling in the forward and backward directions of the treating tank 10 and integrally connected by a truck connecting frame 210, A scraper 340 moving integrally with the scooping unit 210 to scrape scum floated on the water surface of the treatment tank 10 and a traveling unit 500 for moving the scraper 340 in the forward and backward directions of the treatment tank 10 ) As basic components.

The driving unit 500 includes a driving shaft 510 extending in the width direction of the treatment tank 10 so that both ends of the scraper 340 can be transported at the same speed by a single motor, A drive motor 520 mounted on the bogie connecting frame 210 to rotate the drive shaft 510 about the longitudinal center axis of the drive shaft 510 and a drive motor 520 rotatable about the pair of move bogie 200 A pair of driving winches 530 mounted on the driving winch 530 at both ends in the longitudinal direction of the driving shaft 510 to be fixedly coupled to the driving winch 530; And a pair of traction wires 540 coupled to the rear end side.

The driving motor 520 fixed to the bogie connecting frame 210 is coupled to the gear box 522 coupled to enclose the stop of the driving shaft 510. When the driving motor 520 is operated, The driving force generated by the driving shaft 520 is decelerated through the gear box 522 and then the driving shaft 510 is rotated and a pair of driving winches 530 integrally coupled to the driving shaft 510 is rotated by the driving shaft 510 And then rotate accordingly. At this time, the gear box 522 can be any structure as long as it can transmit the rotational force of the driving motor 520 to the driving shaft 510.

When the driving winch 530 is rotated, one longitudinal side of the traction wire 540 wound around the driving winch 530 is released from the driving winch 530 and the other longitudinal side of the traction wire 540 The driving winch 530 is horizontally moved toward one end or the other end in the longitudinal direction of the traction wire 540 according to the rotation direction.

4, the front side of the traction wire 540 is unwound from the driving winch 530 and the rear side of the traction wire 540, The driving winch 530 is moved backward along the longitudinal direction of the pulling wire 540. The driving winch 530 is moved to the rear of the driving winch 530, When the driving winch 530 is moved rearward as described above, the moving carriage 200 and the truck connecting frame 210 coupled to the driving winch 530 are also moved backward, and the scraper 200 coupled to the truck connecting frame 210 The scum floated on the water surface of the treatment tank 10 is pushed rearward by the scrapers 340 and discharged to the scum outlet 14. [

The driving motor 520 rotates the driving shaft 510 and the driving winch 530 coupled thereto in the opposite direction or in the clockwise direction after the scraper 340 is moved back to the position where the separating wall 12 is located . When the driving winch 530 is rotated clockwise as described above, the front side of the pulling wire 540 is further wound on the driving winch 530 and the rear side of the pulling wire 540 is loosened from the driving winch 530, The drive winch 530 advances and returns to its original position.

As described above, in the scroll type scraper removing apparatus according to the present invention, the driving motor 520 does not directly drive the moving carriage 200, but the driving motor 520 rotates one driving shaft 510 The one drive shaft 510 rotates the pair of drive winches 530 integrally to travel at the same speed so that one drive motor 520 drives the two move trucks 200 ) Can be driven. Therefore, in the scoop removing apparatus for pressurized floating water according to the present invention, since only one driving motor 520 is required to travel the pair of moving bogie 200, not only the manufacturing cost is reduced but also the driving motor 520 The advantage is that power is saved and maintenance costs are also reduced.

In the apparatus for removing floating scoops according to the present invention, since one driving shaft 510 travels at two moving bogies 200 at the same speed, the scraper 340 connected to the bogie connecting frame 210 moves to one side The scraper 340 can be reciprocated while maintaining a state in which the longitudinal direction of the scraper 340 is parallel to the width direction of the treatment tank 10. When the scraper 340 is kept in a state in which the longitudinal direction of the scraper 340 is parallel to the width direction of the treatment tank 10 at all times, the scraper 340 is twisted to one side in the course of running, The scum on the treatment tank 10 can be stably removed.

On the other hand, even if the scrapers 340 move toward the separating wall 12 and push the scum toward the scum outlet 14, a certain amount of scum remains on the water surface of the treatment tank 10, The scum remaining on the surface of the scum 340 is collected in a direction away from the scum outlet 14 when the scrapers 340 are returned to the left in FIG. If the scum is collected on the opposite side of the scum outlet 14, even if the scrapers 340 move toward the separating wall 12, the scum on the water surface does not gather toward the scum outlet 14, and the scum removing effect is reduced. Most of the scum moved by the scrapers 340 is discharged to the scum outlet 14 when the scrapers 340 are moved to contact the separating wall 12, So that it remains at the top of the separating wall 12.

The scraper removing apparatus for scooping compressed air according to the present invention is further characterized in that the scraper (340) is configured to be rotatable so as to solve the above problems. That is, the scoop removing apparatus for a pressurized floating scooter according to the present invention includes a plurality of downward frames 310 extending downward from the bogie connecting frame 210 and a plurality of downward frames 310 extending in the width direction of the treatment tank 10, A connecting shaft 320 which is coupled to the lower frame 310 in a rotatable structure and a connecting shaft 320 which is coupled to the connecting shaft 320 at one side in the longitudinal direction and is connected to the scraper 340 at the other side A rotary cylinder 400 coupled to the bogie connecting frame 210 so that the piston 420 is pulled downward and a rotary cylinder 400 having one side in the longitudinal direction rotatable on the lower side of the piston 420 And the other end in the longitudinal direction is fixedly coupled to the connection shaft 320 to connect the connection link 350 that rotates the connection shaft 320 clockwise and counterclockwise as the piston 420 is drawn out and drawn Can be provided as The.

Here, the connection shaft 320 is rotatably coupled to the lower frame 310, but the rotation link 330 and the connection link 350 are fixedly coupled to the connection shaft 320, The connecting link 320, the turning link 330, and the connecting link 350 are integrally rotated about the longitudinal center axis of the connecting shaft 320. The pivoting cylinder 400 includes a body 410 filled with a high pressure gas or fluid and a piston 420 having one longitudinal side inserted into and drawn out from the body 410, The upper end of the piston 410 is coupled to the connecting link frame 210 in a rotatable manner and the end of the piston 420 is coupled to the connecting link 350 in a rotatable structure.

3, when the piston 420 is fully drawn out from the body 410, the pivotal link 330 is positioned to face downward, and the scraper 340 coupled to the pivotal link 330 The end becomes locked on the surface of the water, and the scum floating on the surface of the water can be pushed out. 3, when the piston 420 is drawn into the body 410, the connecting link 350 and the pivotal link 330 coupled thereto rotate in a counterclockwise direction, and the scraper 340 The connection shaft 320 is rotated about the counterclockwise direction, and the end is raised above the water surface. The structure in which the scraper 340 is rotated by the operation of the pivoting cylinder 400 and the effect therefrom will be described in detail with reference to FIG.

5 is a cross-sectional view showing the seating structure of the moving bogie 200 included in the scoop removing apparatus for a pressurized floating bed according to the present invention.

The moving carriage 200 according to the present invention travels along a traveling rail 130 provided on the side wall of the treatment tank 10. The traveling rail 130 includes a moving carriage 200 and a carriage connecting frame 210, The driving rail 130 may be separated from the sidewall of the treatment tank 10 because the weight of the various components coupled to the railway connection frame 210 is applied. When the running rail 130 is directly connected to the wall surface of the treatment tank 10 in the case where the running rail 130 is formed of a beam having an I-shaped cross section as shown in this embodiment, The traveling rail 130 may be easily separated from the side wall of the treatment tank 10 because the contact area between the treatment rail 10 and the wall surface of the treatment tank 10 is very narrow.

The apparatus for removing floating scoop according to the present invention is capable of preventing the traveling rail 130 from being stably fixed to the side wall of the treatment tank 10 even when the load applied to the moving rail 200 is greatly increased, A plurality of mounting frames 110 which are coupled to the inner walls on both sides in the width direction of the processing vessel 10 and are spaced apart from each other along the front and rear direction of the processing vessel 10 and an H beam 120 coupled onto the plurality of mounting frames 110, As shown in FIG.

5, the mounting frame 110 has a large area of contact with the wall surface of the treatment tank 10, so that it is very stably bonded to the wall surface of the treatment tank 10, and the H beam 120 has a plurality of fastening bolts And the driving rail 130 is coupled to the H beam 120 by a plurality of fastening bolts and is coupled to the mounting frame 110 and the H beams 120 and the traveling rails 130 ) Is maintained in a state of being bonded to the wall of the treatment tank 10 very firmly. This makes it possible to prevent the traveling rail 130 from being easily detached from the wall of the treatment tank 10 even when a large load is applied to the traveling rail 130. That is, It is possible to travel in the direction of the vehicle.

As shown in this embodiment, when the running rail 130 is configured to be coupled to the upper surface of the H beam 120 coupled to the mounting frame 110, a gap between the running rail 130 and the wall surface of the treatment tank 10 A space for supplying power and operation signals to the driving motor 520 can be positioned between the running rail 130 and the wall surface of the treatment tank 10. [

That is, the scoop removing apparatus of the present invention may further include an electric wire 220 mounted on the moving carriage 200 and wound around a wire 20 for power and operation signal transmission. The electric wire 20 is loosened from the electric wire 220 in accordance with the traveling direction of the moving bogie 200. The electric wire 20 is wound around the electric wire 220 in a direction in which the electric wire 20 is wound, Can be automatically wound. The electric wire 220, in which the electric wire 20 is automatically wound as long as no extra external force is applied, is a device widely commercialized in the technical field of the present invention, and a detailed description thereof will be omitted.

When the electric wire 20 is directly placed on the stationary frame 110, the electric wire 20 can be sagged down between the adjacent two stationary frames 110. Therefore, A cable guide rail 230 installed on the plurality of mounting frames 110 may be additionally provided. When the cable guide rail 230 is additionally provided as described above, the electric wire 20 unwound from the electric wire 220 is mounted on the cable guide rail 230, thereby preventing the wire 20 from being tangled with other components There is an advantage to be able to do.

6 is a cross-sectional view showing a coupling structure of the hollow tube 550 and the fastening shaft 560 included in the apparatus for removing floating scoops according to the present invention.

The apparatus for removing floating scoops according to the present invention determines the travel of the moving carriage 200 in the process of winding or unwinding the traction wire 540 to or from the driving winch 530 so that the tension of the traction wire 540 is loosened The mobile truck 200 may not be able to travel normally. Therefore, the driving unit 500 included in the present invention can be configured such that the tension of the traction wire 540 is maintained at a constant magnitude.

For example, the traveling unit 500 includes a hollow tube 550, a bottom bracket 552 formed in a ring shape and coupled to a lower side of the inner space of the hollow tube 550, The other end of the coupling shaft 560 is connected to the other end of the coupling shaft 560. The coupling shaft 560 has a larger cross section than the coupling shaft 560 and is coupled to the other end of the coupling shaft 560. [ And a coil spring 570 which is compressed between the bottom bracket 552 and the shaft head 562.

The hollow of the bottom bracket 552 is manufactured in such a size that the stop of the fastening shaft 560 can pass but the coil spring 570 does not pass therethrough and the shaft head 562 is moved in the longitudinal direction of the coil spring 570 The coil spring 570 is maintained in a compressed state between the shaft head 562 and the bottom bracket 552. As shown in FIG.

Accordingly, when the pulling wire 540 slightly extends, the coil spring 570 expands the pulling wire 540 by an extended distance, so that the tension of the pulling wire 540 always maintains a constant magnitude, The mobile bogie 200 can be made to travel normally. At this time, the elastic force of the coil spring 570 should be appropriately selected according to various conditions such as the length of the pulling wire 540 and the elongation.

Further, in the scoop removing apparatus for a pressurized floating scavenger according to the present invention, even if the driving motor 520 rotates the driving shaft 510 in the case where the pulling wire 540 is cut off, the moving carriage 200 does not travel, A case where the motor 520 is unnecessarily driven may occur. In order to solve the above problems, the apparatus for removing floating scoop according to the present invention may be configured to stop the operation of the driving motor 520 by sensing when the pulling wire 540 is broken.

That is, the traveling unit 500 included in the present invention may further include a switch 580 disposed above the hollow pipe 550 to detect whether the shaft head 562 is drawn or not. 6, the fastening shaft 560 is moved upward by the elastic force of the coil spring 570, so that the shaft head 562 is moved in the hollow tube 550, The shaft 560 is pulled out of the hollow tube 550 when the switch 580 is further provided on the upper side of the hollow tube 550 and the pulling wire 540 is disconnected So that the operation of the drive motor 520 can be stopped.

If the operation of the driving motor 520 is stopped when the traction wire 540 is cut off, unnecessary power consumption can be prevented, and any one of the pair of moving trays 200 Of the scraper 340 can be prevented from being pressed against the side wall of the treatment tank 10 while the scraper 340 is twisted to one side. That is, the scraper 340 can be prevented from being damaged.

The apparatus for removing scum according to the present invention further includes an alarm signal for informing an operator or a manager of the disconnection of the pulling wire 540 when the switch 580 detects the withdrawal of the shaft head 562, It may be configured to allow immediate coping. At this time, the alarm signal may be applied as a warning signal or a light signal, or may be applied as a fault signal transmitted to an operator or a manager's smartphone.

The pair of traction wires 540 extend along the longitudinal direction of the processing tank 10 so that the pair of moving trailers 200 can reciprocate parallel to the longitudinal direction of the processing tank 10 And are disposed on both sides in the width direction of the treatment tank 10. The hollow tube 550 is vertically erected so that the shaft head 562 does not hit other parts when the shaft head 562 is drawn out of the hollow tube 550, 10).

7 is a side view showing a shape in which the scraper 340 is rotated by the rotating cylinder 400. Fig.

The scraper removing apparatus for scooping scum according to the present invention is characterized in that the scraper 340 for scraping scum is not simply movable in the vertical direction but is configured to be rotatable around the connecting shaft 320 .

3, when the piston 420 is drawn into the body 410, the connection link 350 connected to the piston 420 rotates in a counterclockwise direction and the connection link 350 is rotated in the counterclockwise direction. The connection shaft 320 and the pivotal link 330 fixedly coupled to each other also rotate counterclockwise. When the pivotal link 330 rotates counterclockwise around the connecting shaft 320, the scraper 340 coupled to the pivotal link 330 also rotates counterclockwise about the connecting shaft 320 The end of the scraper 340 is spaced upward from the water surface, as shown in FIG.

In this state, when the end of the scraper 340 is spaced upward from the water surface, even if the moving carriage 200 moves in the direction away from the scum outlet 14, the scum remaining on the water surface is pushed by the scraper 340 toward the treated water inlet There is an advantage that it is not moved.

When the scraper 340 is moved in the counterclockwise direction about the connecting shaft 320 so that the scraper 340 moves close to the separating wall 12, The scum remaining on the upper end of the separating wall 12 can be pushed out to the scum outlet 14 by rotating the separating wall 12, so that the scum removing effect is improved.

At this time, the rotation angle of the scraper 340 should be appropriately selected according to various conditions such as the height of the separation wall 12 and the top angle.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention.

10: Treatment tank 12: Separation wall
14: scum outlet 20: wire
110: mounting frame 120: H beam
130: Running rail 200: Moving carriage
210: truck connection frame 220:
310: downward frame 320: connection axis
330: rotation link 340: scraper
350: connecting link 400: rotating cylinder
410: Body 420: Piston
500: driving unit 510: driving shaft
520: drive motor 522: gear box
530: driving winch 540: pull wire
550: hollow tube 552: bottom bracket
560: fastening shaft 562: shaft head
570: coil spring 580: switch

Claims (7)

delete A pair of running rails mounted on the inner wall in the width direction of the treatment tank and extending in the front-rear direction of the treatment tank;
A pair of traveling bogies that are respectively seated on the pair of running rails and run in the forward and backward directions of the treating tank and are integrally connected by the bogie connecting frame;
A scraper moving integrally with the bogie connecting frame and scraping scum floated on the surface of the treatment tank;
A driving motor that is mounted on the bogie connecting frame and that rotates the driving shaft about a longitudinal center axis of the driving shaft; and a driving motor mounted on the pair of moving bogies, And a pair of traction wires wound on the driving winch at least once and both ends in the longitudinal direction are coupled to the front end side and the rear end side of the processing tank, ;
/ RTI >
The traveling unit includes a hollow tube, a bottom bracket formed in a ring shape and coupled to a lower side of the inner space of the hollow tube, a coupling shaft having an end connected to one end of the traction wire and an other end inserted into the hollow tube, A shaft head formed in a block shape having a larger cross section than the coupling shaft and coupled to the other end of the coupling shaft; and a coil spring compressed between the bottom bracket and the shaft head. The method of claim 2,
The traveling unit further includes a switch installed on the hollow tube to detect whether the shaft head is pulled out,
Wherein the driving motor is configured to receive a signal from the switch when the shaft head is drawn out from the hollow tube, and to stop the operation. The method of claim 2,
Wherein the pair of traction wires extend along the front-rear direction of the treatment tank and are disposed on both sides in the width direction of the treatment tank,
Wherein the hollow tube is fixedly coupled to the treatment vessel so as to stand vertically. The method of claim 2,
Further comprising: a plurality of mounting frames coupled to both inner side walls in the width direction of the treatment tank, the plurality of mounting frames being arranged along the front-back direction of the treatment tank; and an H beam coupled onto the plurality of mounting frames,
Wherein the running rail is fixedly coupled to the H beam. The method of claim 5,
A plurality of downward frames extending downward from the bogie connecting frame, a connection shaft extending in a width direction of the processing tank and coupled in a structure rotatable below the plurality of downframes, A plurality of pivotal links extending on the other side in the longitudinal direction to be coupled to the scraper, a pivoting cylinder coupled to the pivot connection frame for pulling the piston downward, and a pivotable cylinder having one side in the longitudinal direction rotatable on the lower side of the piston Further comprising a connecting link for rotating the connecting shaft in the clockwise direction and the counterclockwise direction as the other side of the longitudinal direction is fixedly coupled to the connecting shaft and the piston is drawn out and drawn. The method of claim 6,
A rotation elastic means for applying a rotational elastic force to the electric wire in a direction in which the electric wire is wound and a rotary elastic means provided on the plurality of mounting frames to extend in the front and rear direction of the treatment tank And a cable guide rail on which the electric wire loosened in the electric wire is seated.

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