KR101445342B1 - Direct intake sludge intake - Google Patents

Abstract

The present invention relates to a direct sucking type sludge removing device including a scraping device for continuously sucking and discharging scraped sludge while reciprocating on a rail provided on a bottom of a settling tank and a driving part for driving the scraping device , The sludge removing apparatus of the present invention collects sludge in the moving scraper device and directly sucks and removes the sludge, thereby not only increasing the sludge treatment efficiency but also causing almost no load on the scraper, and increasing the scraper load And the sludge can be stably treated without any problem of wear of the chain sprocket.

Description

[0001] DIRECT INTAKE SLUDGE INTAKE [0002]

The present invention relates to a direct sucking type sludge removing apparatus, and more particularly, to a sludge removing apparatus for a direct sucking type sludge removing apparatus which comprises a scraping device for continuously sucking and discharging raked sludge by reciprocating on a rail provided on a bottom surface of a settling tank, The sludge removal apparatus according to claim 1,

Generally, a sludge collector of a water treatment facility scrapes and discharges sludge, which is a precipitate generated when purifying purified water, sewage and wastewater in a settling tank. Typical examples of such a sludge collector include a scraper-type sludge collector using a chain and an underwater-type sludge collector.

However, the conventional scraper type sludge collector using such a chain has a problem that the scraper load is increased due to high load during continuous operation, the chain sprocket is worn and maintenance is difficult, and the collection of sludge in the underwater type is small And the like.

Korean Patent Publication No. 10-2009-0090056 (Aug. 25, 2009)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sludge removing apparatus capable of minimizing a load on a scraper of a sludge collector and increasing the treatment efficiency of the sludge.

According to one aspect of the present invention, there is provided a sludge purging device for scraping a sludge into a movable space which is reciprocated on a rail provided on a bottom of a settling tank and continuously sucking and discharging the sludge, And a driving unit for driving the apparatus.

In the apparatus for removing direct sludge according to an embodiment of the present invention, the scraping device includes a plurality of vertical opening / closing plates supported by a hinge and vertically openable and closable, and a sludge removing / A plurality of air lifts for sucking collected sludge, and a plurality of air lifts for supplying air to the plurality of air lifts at the same pressure, A distributor, a sludge discharge unit for discharging the sludge to the outside, and a wheel for moving on the rail.

In the direct suction type sludge removing apparatus according to an embodiment of the present invention, when the scraping device is advanced, the main wire of the driving part is pulled down to close and when the scraping device is moved backward, The main wire of the sludge layer is pulled upward to prevent flow and disturbance of the sludge layer at the time of backward movement, and is further provided at the lower end thereof.

The sludge discharge unit may include a movable hose pipe connected to the air lift, a fixed pipe connected to the movable hose pipe, and a guide for preventing swaying and sagging of the movable pipe, in the apparatus for removing direct sludge according to an embodiment of the present invention And a check valve for preventing the backflow of the sludge is provided.

In the direct suction type sludge removing apparatus according to an embodiment of the present invention, the driving unit includes a speed reducer for reciprocating the scraping device by the main wire, a drum connected to the speed reducer and for winding up the main wire to advance or backward And a limit switch for adjusting the operation of the speed reducer. A rotary rod for detecting the movement of the scraping device is installed at the lower portion of the limit switch, and the upper portion is connected to the wire. A sensor is disposed at the upper portion, And a drive motor is controlled by a spring, which is characterized in that the sensor is always positioned in the vertical direction.

The limit switches are installed on both sides of the round trip section in such a manner that two sets of limit switches are provided so that when one side can not detect, the other side can detect the other.

In the direct suction type sludge removing apparatus according to an embodiment of the present invention, the rails and wheels are hexagonal rails and wheels for preventing deterioration, which are made of STS material to prevent corrosion.

The apparatus for removing direct aspiration sludge according to the present invention having the above-described structure collects sludge in a moving scraper device and directly sucks and removes the sludge, thereby not only increasing the sludge treatment efficiency but also causing almost no load on the scrapers have.

Therefore, the direct suction type sludge removing apparatus according to the present invention is advantageous in that the sludge can be stably treated without increasing the scraper load and wear of the chain sprocket, which are generated in the conventional sludge collector.

Also, the lower rail should be installed in at least three places so that the scraper does not leave the rail.

In general, the sludge is precipitated from the inlet side of the influent, and the amount of sludge decreases remarkably as it goes toward the outlet. Therefore, this device removes the sludge while moving the scraping device from the outlet side. After the sludge is collected and moved, the air lift is operated after a certain period of time to remove the sludge, so that the efficiency is very high.

In addition, since the amount of sludge increases toward the inlet, it is advantageous that sludge can be processed by gradually moving the speed of the driving motor.

This device is based on removing the sludge by using an air lift, but depending on the position of the sludge storage facility at the rear end, the sludge can be removed by using the siphon phenomenon by the water head difference.

1 is a plan view of a direct aspiration type sludge removal device according to an embodiment of the present invention.
2 is a side view of a direct aspiration type sludge removal device according to an embodiment of the present invention.
3 is a detailed view of a scraping device used in a direct aspiration type sludge removal device according to an embodiment of the present invention.
Figure 4 is another detailed view of the scraping device according to Figure 3;
Figure 5 is another detailed view of the scraping device according to Figure 3;
FIG. 6 is a view showing a limit switch used in an apparatus for removing direct sludge according to an embodiment of the present invention.
7 is a side view of another embodiment of a direct aspiration type sludge removal device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known general functions or configurations will be omitted.

The present invention relates to a direct inhalation type sludge removal apparatus that collects sludge in a moving scraper device and simultaneously sucks and removes the sludge, thereby not only increasing the sludge treatment efficiency but also causing almost no load on the scraper.

FIG. 1 is a plan view of an apparatus for removing direct sludge according to an embodiment of the present invention, FIG. 2 is a side view thereof, and FIGS. 3 to 5 show details of a scraping apparatus used in the apparatus for removing direct sludge of the present invention .

1 to 5, the direct suction type sludge removing apparatus according to an embodiment of the present invention roughly reciprocates on a rail 110 installed on a bottom surface of a settling tank 100, scrapes sludge, And a driving unit 300 for driving the scraping device 200. The scraping device 200 shown in FIG.

In the apparatus for removing direct sludge according to the present invention, the scraping device 200 includes a vertical opening / closing plate 220 supported by the hinge 210 and vertically openable and closable, An upper lid 230 for preventing the sludge from being dispersed, a plurality of air lifts 240 for sucking collected sludge, an air distributor 250 for supplying air to the plurality of air lifts 240, A sludge discharge unit 270 for discharging the sludge to the outside, and a wheel 280 moving on the rail 110.

The vertical opening and closing plate 220 is lowered and closed by pulling the main wire W of the driving unit 300 when the scraping device 200 advances. When the scraping device 200 is retracted, The main wire W of the wire 300 is pulled up by the opposite direction and the weight 221 may be provided at the lower end thereof.

The driving unit 300 includes a speed reducer 310 for reciprocally moving the scraping device 200 by the main wire W and a main wire 310 connected to the speed reducer 310, W for winding the scraping device 200 forward and backward.

The driving unit 300 scrapes the sludge while advancing the scraping device 200 connected to the main wire W at a constant speed using the speed reducer 310 to collect sludge in the device internal storage space S The giver plays a role. On the contrary, at the time of the backward movement, the decelerator 310 rotates in the reverse direction and lifts the vertical opening / closing plate 220 attached with the hinge 210 at the rear end of the scraping device, The sludge minimizes the effects of sedimentation and vortexing.

When the apparatus is moved backward, the main wire W moves by a force pulling a certain space by the driving unit 300. At this time, the main opening / closing plate 220, which is attached to the hinge 210 installed at the rear end of the scraping device 200, The vertical opening / closing plate 220 connected to the wire W moves together to lift the plate and move until the backward movement is completed. When the scraping device 200 is advanced, the driving unit 300 is rotated in a forward direction to pull the wire W. In this case, the vertical opening / closing plate 220 moves downward to close the sludge and discharge the sludge therein . The weight 221 provided on the vertical opening / closing plate 220 serves as an assistant to smoothly close by gravity.

The sludge removing device according to the present invention is configured such that the sludge gradually accumulates in the sludge storage space S while the scraping device 200 advances and the air supplied through the pipe 260 from the external air inlet 261 to the air Is supplied to each air lift (240) at a predetermined amount and pressure by a distributor (250), and the sludge is removed from the sedimentation tank (100) by an air lift method.

The sludge sucked by the air lift 240 passes through the movable hose pipe 271 with the air, flows to the fixed pipe 272, and is discharged to the concentration tank through the sludge discharge opening 273. At this time, the movable hose pipe 271 is not detached by the hose supporting device but reciprocates in a certain space, so that the sludge is discharged while being moved without being worn. According to the present invention, in particular, a moving guide 274 designed specifically to move the guide of the hose pipe in accordance with the forward and backward movement of the hose 271 to prevent the hose from flowing, Is installed at the curved portion of the hose 271 to keep the hose 271 at a constant interval and speed as the hose moves to smooth the movement. When discharging the sludge, an air vent designed to be dispersed in the air only in the final end portion of the fixed pipe 272 is separately installed, so that only the sludge is moved to the discharge tank and the air is dispersed in the air. It is preferable to provide a check valve 290 at the outlet of the sludge discharge pipe so as to prevent the backflow of the sludge generated after completion of the suction.

The direct suction type sludge removing apparatus according to the present invention is characterized in that a plurality of suction ports and air lifts are installed at predetermined intervals in the entire width of the sludge in accordance with the design rather than sucking the sludge from the center (one place) or using an air lift, The removal efficiency is very high and the water content is low. In addition, since the sludge is removed while moving, the sludge can be efficiently removed because the scraper receives less load than the conventional device. Also, since the scraping device does not receive the load, the load factor of all the devices including the driving device is low. Particularly, since the amount of sedimentation sludge is very large in the portion where the wastewater is drawn by the principle of the rectangular sedimentation apparatus, the amount of sludge is remarkably decreased as it goes toward the upper side, so that the sludge removal apparatus according to the present invention can remove the sludge .

In order to fix the position of the main wire W and make the movement smooth, wheels (321, 322) are installed at both ends of the lower end of the sedimentation tank (100) (200) does not come off, and a guide for preventing wire dislocation is attached to itself to prevent it from coming off. As the material of the main wire according to the present invention, it is preferable to use a stain resistant to corrosion.

The main wire W reciprocates the scraper device 200 for a predetermined distance by the drum 320 connected to the speed reducer 310. The main wire W repeats forward and backward movement by the limit switch 330 as shown in FIG. So that it can be moved. The limit switch 330 is guided by the guide pipe 331 and installed at the upper part of the outside of the settling tank 100. A sensor (not shown) is disposed on the upper portion 330 of the limit switch 330 and a spring (not shown) is provided on the sensor to always maintain the sensor contact portion of the lower portion vertically, The sensor is connected to the upper sensor portion by a wire to operate the sensor to stop the driving motor. The sensor is installed in 4 places on both sides. In case of stopping, even if only one of two sensors is operated, the drive motor is stopped and wait for about 10 seconds. After that, the backward signal is sent. And operates the scraping device 200.

The main wire W is equally fastened at both sides of the scraping device 200 to maintain balance during forward and backward movement and preferably at least three rails 110 provided at the bottom of the scraper device 200 So as to prevent deviation, and the driver 300 uniformly applies force from both sides, so that there is no sagging phenomenon. Further, a guiding line for piping is provided on the side surface to prevent the scraping device 200 from coming off. It is preferable that the rails 110 on the bottom of the sedimentation tank 100 and the scrapping device 200 and the wheels 280 moving on the rails 110 use hexagonal rails and wheels for preventing escape.

On the other hand, the scum generated at the upper part is provided with an induction plate so as not to generate dust on the upper part, and the scum is firstly removed by suction by pulling the scum skimmer 420 (patented by the present inventor) The scum separator 430 separates and separates the concentrated scum. The coagulated wastewater is primarily precipitated at the shear front and the undrawn sludge is completely separated as it passes through the swash plate 410 and the sludge is deposited and only the clean supernatant is discharged. A flow plate (distribution device) is installed in the inlet portion of the flocculated wastewater when necessary so that the wastewater is dispersed at a uniform concentration and is introduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. This will be obvious.

100: settling tank
110: rail
200: Scraping device
210: Hinge
220: vertical opening / closing plate
230: upper cover
240: Air lift
250: Air distributor
260: Air piping
271: Portable hose piping
272: Fixed piping
273: Sludge outlet
274: Movable piping moving guide
280: Wheel
300:
310: Reducer
320: Drums
410: swash plate
420: Scum skimmer
W: Main wire
S: Sludge storage space

Claims (9)

A scraping device reciprocating on a rail provided on the bottom of the settling tank and scraping up the sludge by partitioning the sludge by a plurality of air lifts and continuously sucking and discharging the sludge; And
Wherein the scraping device comprises a plurality of vertical opening / closing plates supported by a hinge and vertically openable and closable, and a plurality of vertical opening / A plurality of air lifts for sucking collected sludge; an air distributor for supplying air to the plurality of air lifts in a fixed amount and in a constant pressure; a sludge discharge unit for discharging the sludge to the outside; And wheels for moving on the rails. delete  2. The apparatus according to claim 1, wherein the vertical opening / closing plate is lowered and closed by pulling the main wire of the driving unit when the scraping device is advanced, and is moved upward when the main wire of the driving unit is pulled back when the scraping device is retracted Wherein the sludge removal device comprises:  The direct aspiration type sludge removing apparatus according to claim 1, wherein a weight (221) is provided at a lower end of the vertical opening / closing plate (220) and is smoothly closed by gravity.  The sludge discharge unit according to claim 1, wherein the sludge discharge unit includes a movable hose pipe connected to the air lift, a fixed pipe connected to the movable hose pipe, and a movable pipe moving to move the guide wheel moving together with the movable hose pipe to prevent deflection or departure of the pipe Wherein the sludge removal device comprises a guide.  [6] The apparatus of claim 5, wherein the sludge discharge unit is provided with a check valve for preventing back flow of sludge after completion of the air lift.  [2] The apparatus according to claim 1, wherein the driving unit comprises: a speed reducer for reciprocating the scraping device by a main wire; a drum connected to the speed reducer for winding up the main wire to forward or backward; And a direction limit switch.  The direct aspiration type sludge removing apparatus according to claim 7, wherein a sensor is disposed on the upper portion of the limit switch and a spring is provided on the sensor.  The direct aspiration type sludge removing apparatus according to claim 1, wherein the rails and wheels are hexagonal rails and wheels for preventing separation.

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