KR20040033108A - An apparatus for removing floated sludge of sedimentation tank - Google Patents

Abstract

PURPOSE: Provided is a sludge scraper for compulsively and completely collecting and eliminating floating sludge in a sedimentation tank for preventing overflow of sludge to a treated water discharge pipe. CONSTITUTION: The sludge scraper rotating on a center pillar(102) fixed at the center of a sedimentation tank for eliminating floating sludge, comprises a sludge collection unit with a sludge collection plate(14) which is fixed to a cylinder(12) installed in a side of a lower portion of a scrapper body, located to face a scraper arm(204), and vertically moves for eliminating sludge floated on the surface of water between the scraper arms(204); and a sludge discharge unit with a rail(32) provided in the scraper body, a moving object sliding along the rail(32), and a sludge skimmer(36) provided under the moving object for discharging the collected sludge to a sludge discharge box.

Description

Floating sludge removal device {AN APPARATUS FOR REMOVING FLOATED SLUDGE OF SEDIMENTATION TANK}

The present invention relates to a scraper for removing the sludge generated in the sedimentation tank of the cold rolling mill and plating plant, and more specifically, by collecting the waste sludge generated when treating the wastewater using the sedimentation tank The present invention relates to an improved sludge removal apparatus that is forcibly discharged to a sludge discharge box to more completely remove floating sludge in a sedimentation tank to prevent the outflow of floating sludge into a drainage channel.

In general, sediment from wastewater treatment or water purification is called sludge. The wastewater is first pretreated according to its properties and then agglomerated by a chemical treatment method that neutralizes and aggregates contaminants in the wastewater. The coagulated contaminants are purified by sedimentation by physical means.

As shown in Figure 1 (a), through the waste water inlet pipe 104 installed in the lower center of the settling tank 100, the wastewater generated in the cold rolling mill and plating plant to the treated water 106 in the settling tank 100 It is supplied, in the lower center of the settling tank 100, a support column 102 into which the wastewater inflow pipe 104 is inserted is fixed.

In addition, a plurality of wastewater supply holes 102a are formed at an upper portion of the support pillar 102, and a hopper 102b is formed at a circumference thereof so that the wastewater inflow pipe 104 installed at the lower portion of the settling tank 100. Wastewater supplied through the wastewater is supplied into the settling tank 100 through the wastewater supply hole 102a.

In addition, a settling sludge discharge pipe 108 having a settling sludge discharge valve 110 is provided at a lower portion of the settling tank 100 to settle the settling sludge precipitated to the lower portion of the treated water 106 in the settling tank 100. By opening the sludge discharge valve 110 is discharged through the settling sludge discharge pipe 108.

At this time, when the contaminants are aggregated by the chemical treatment method, if the chemical conditions are not appropriate, the contaminants are not aggregated or are aggregated to a fine size. When the specific gravity of the contaminants is low, the sludge is formed in the settling tank 100. It floats to the surface of the treated water 106.

In addition, when the residence time of the settling sludge in the settling tank 100 becomes longer, the settling sludge precipitated into the treated water 106 is decayed, so that the specific gravity becomes smaller, thereby causing the surface of the treated water 106 to float. .

In order to remove the sludge floating on the surface of the treated water 106 as described above, as shown in Figure 1 (a), (b), conventionally on the support pillar 102 provided in the center of the settling tank 100 A scraper 200 is provided to be rotatable about a fixed central axis 112, and the scraper 200 is a scraper body 202 and the scraper body fixed to the central axis 112. And a support 206 fixed to the lower side of the side 202 to fix the scraper arm 204, and a drive unit 220 rotatably fixed to the tip of the scraper body 202.

In this case, the driving device 220 includes a driving motor 222 fixed inside the front end of the body 202 and a driving sprocket 224 coupled to the driving motor shaft 222a, and the body 202. A bearing block 226 having a bearing inserted therein is fixed to the lower end of the driving wheel 228a to which the driving wheel 228 is coupled, and supports the driving wheel shaft 228a on both sides of the driving wheel 228, and the driven sprocket 230 has the driving wheel shaft. Since the driving wheel 228 and the driven sprocket 230 are supported by the bearing block 226, the drive wheel shaft 228a is supported by the driving wheel 228 and the driven sprocket 230.

On the other hand, the drive sprocket 224 and the driven sprocket 230 is connected to the chain 232 to transfer the power from the drive motor 222 to the drive wheel 228.

As shown in FIG. 1A, the driving wheel 228 driven by the driving motor 222 is in contact with the flange portion 100a formed on the settling tank 100 so that the driving motor 222 is provided. When the scraper 200 is rotated about the central axis 112 during the driving of the scraper body 202 and the scraper arm fixed by the supporter 206 fixed to the lower side of the scraper body 202 204 rotates to collect the floating sludge that has floated on the surface of the treated water 106 in the settling tank 100.

On the other hand, the side surface of the settling tank 100 is provided with a sludge sludge discharge pipe 242 is equipped with a floating sludge discharge valve 244 is inserted into the settling tank 100, the floating sludge located inside the settling tank 100 The discharge sludge discharge box 246 is located in the discharge pipe 242.

Therefore, the sludge floating on the surface of the treated water 106 in the sedimentation tank 100 is introduced into the flotation sludge discharge box 246 when the flotation sludge discharge valve 244 is opened, and the flotation sludge discharge pipe 242. Is discharged.

As shown in FIG. 1A, a sensing bar 208 is fixed to the lower portion of the scraper body 202, and a limit switch 210 is provided on an upper inner wall of the settling tank 100. When the scraper 200 is rotated by the driving motor 222, the scraper arm 204 rotates and collects the floating sludge on the surface of the treated water 106 in the settling tank 100.

On the other hand, when a large amount of floating sludge accumulates on the surface of the treated water 106 in the sedimentation tank 100, the operator automatically selects the selection switch of the operation stage 260 in the manual, at this time fixed to the lower portion of the scraper body 202 When the sensing bar 208 touches the limit switch 210 installed on the upper inner wall of the sedimentation tank 100, the floating sludge discharge valve 244 is opened and is opened by the scraper arm 204. The collected floated sludge is pushed into the floated sludge discharge box 246 to be discharged to the floated sludge discharge pipe 242.

However, the discharge of the flotation sludge by the method is pushed onto the surface of the treated water 106 in the settling tank 100 rather than the collected flotation sludge is discharged into the flotation sludge discharge box 246, the flotation sludge is not discharged. There was a problem that only the treated water 106 introduced into the flotation sludge discharge box 246 without being discharged.

In this way, if the sludge is not removed, the problem continues to accumulate on the surface of the treated water 106 and overflows into the drainage path 100b provided in the sedimentation tank 100 to be introduced into the facilities of other processes, and wastewater treatment is not normally performed. There was a problem that causes environmental pollution.

In addition, since the treated water 106 in the settling tank 100 is leaked as described above, an additional cost is generated due to the reprocessing of the waste water.

The present invention is to solve the conventional problems as described above, its purpose is to collect and block the injured sludge generated when treating the waste water to force the discharge of the flotation sludge discharge box to the flotation sludge discharge box more completely. It is to provide an improved sludge removal apparatus to remove and prevent the outflow of floating sludge to the drain.

1 shows a scraper which is a conventional flotation sludge removal apparatus,

(a) is a cross section,

(b) is a plan view;

2 is a front view of the sludge collection unit of the flotation sludge removal apparatus according to the present invention;

Figure 3 is a perspective view of the sludge discharge portion of the flotation sludge removal apparatus according to the present invention;

Figure 4 is an overall perspective view of the flotation sludge removal apparatus according to the present invention;

5 is an operational state diagram of the flotation sludge removal apparatus according to the present invention;

6 is an operation flowchart of the flotation sludge removal apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

10 ..... sludge collector 12 ..... collector plate cylinder

14 ..... sludge collection plate 30 ..... sludge discharge

32 ..... rail 34 ..... skimmer cylinder

36 ..... sludge skimmer 38 ..... rubber plate

38 ..... Rubber plate 50 ..... Moving object

52 ..... Moving frame 54 ..... Feed motor

56 ..... Wheel 58 ..... 1st Sprocket

60 ..... 2nd sprocket 62, 232 ..... chain

64 ..... support block 65 ..... hydraulic pump

100 ..... Sedimentation tank 102 ....

200 ..... Scraper 202, 202 '..... Scraper Body

In order to achieve the above object, the present invention, in the scraper to rotate around the central axis provided in the center of the settling tank of the cold rolling mill and plating plant to remove the injured sludge, is fixed to the collecting plate cylinder installed under the body side of the scraper And a sludge collection unit positioned to face the scraper arm and having a sludge collection plate for vertical movement to block and collect the sludge injured between the scraper arm; Sludge collected between the scraper arm and the sludge collection plate is provided with a rail provided in the scraper body in parallel with the scraper body, a movable body moving along the rail, and a sludge skimmer at the bottom of the movable body. Sludge discharge unit to discharge to the box; provides a sludge removal apparatus characterized in that it comprises a.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a perspective view of the sludge collection unit of the flotation sludge removal apparatus according to the present invention, Figure 3 is a perspective view of the sludge discharge portion of the flotation sludge removal apparatus according to the present invention, Figure 4 is a perspective view of the entire sludge removal apparatus according to the present invention 5 is an operational state diagram of the flotation sludge removal apparatus according to the present invention, Figure 6 is a flow chart of the operation of the flotation sludge removal apparatus according to the present invention.

In FIG. 2 and FIG. 5, the flotation sludge removal apparatus 1 according to the present invention is shown. The same components as those of the conventional components are given the same symbols as those shown in FIG. Corresponding components and improved components are shown with the same symbol in their prime.

The flotation sludge removal apparatus 1 includes a sludge collection unit 10 and a sludge discharge unit 30. First, the sludge collection unit 10 will be described.

As shown in FIG. 2, the sludge collection unit 10 is a scraper fixed to the lower side of the scraper body 202 ′ by a support 206 fixed to one side lower portion of the scraper body 202 ′. An arm 204 is provided, and three collecting plate cylinders 12 are fixed to the lower side of the scraper body 202 ′.

In addition, a fixing bar 14a fixed to the sludge collecting plate 14 is fixed to the rod 12a of the collecting plate cylinder 12 so that the sludge collecting plate 14 is formed of the collecting plate cylinder 12. It is configured to move vertically according to the operation.

That is, the sludge collection plate 14 is positioned to face the scraper arm 204 so that the sludge collecting plate 14 is raised when the scraper 200 rotates and descends when the floating sludge is collected by the scraper arm 204. It is possible to collect flotation sludge.

Next, the sludge discharge portion 30 is a rail 32 is fixed to the end 202'a of the scraper body 202 'in parallel with the scraper body 202', and the rail 32 The sludge skimmer 36 is fixed to the movable body 50 and the skimmer cylinder 34 disposed below the movable body 50 and moves up and down.

As shown in FIG. 4, the rail 32 is fixed in parallel to the scraper body 202 ′ at the end 202 ′ a of the scraper body 202 ′ with the center open, and the rail ( First and second limit sensors 32a and 32b are disposed at both ends of the 32 to sense that the movable body 50 has moved to the end of the rail 32.

3 shows the sludge discharge part 30 of the flotation sludge removal apparatus 1 according to the present invention, which is a structure of the movable body 50 moving on the rail 32 along the rail 32. The explanation is as follows.

As shown in FIG. 3, the moving body 50 moving along the rail 32 includes a rectangular moving body frame 52, and a transfer motor 54 is fixed on the moving body frame 52. A first sprocket 58 is coupled to the transfer motor shaft 54a.

The wheel 56 having a groove formed on the circumference thereof is rotatable at four points below the movable frame 52. The structure of the frame 52 includes a support block 64 having a bearing inserted therein. The wheel shaft 56a fixed to the lower portion of the wheel 56 is fixed to both sides of the wheel 56 so that the wheel 56 can be freely rotated.

At this time, as shown in Figure 3, only one of the wheels 56 disposed at the lower four points of the moving frame 52 is driven by the transfer motor 54, the second sprocket 60 is the four Since only one of the wheel shafts 56a is coupled to one end of the wheel shaft 56a and connected to the first sprocket 58 and the chain 62 coupled to the transfer motor shaft 54a, the driving force of the transfer motor 54 is the wheel. It is transmitted to and driven by 56.

In addition, the remaining three non-driven wheels 56 rotate freely and serve to guide and support the movable body 50 along the rail 32.

As shown in FIG. 3, two skimmer cylinders 34 are vertically fixed to the lower portion of the movable body frame 52, and a sludge skimmer having a support bar 36a fixed to the lower portion of the skimmer cylinder 34. 36 is disposed, and a rubber plate 38 is fixed to the sludge skimmer 36.

That is, as the support bar 36a is fixed to the rod 34a of the skimmer cylinder 34, the skimmer cylinder 34 and the sludge skimmer 36 are combined to operate the skimmer cylinder 34. The sludge skimmer 36 is operated in the vertical direction.

3 and 4, the hydraulic pump 65 is fixed to the upper portion of the movable frame 52, the hydraulic pump 65 is the skimmer cylinder 34 and the sludge collection unit It is connected by the collector plate cylinder 12 of the (10) and the hydraulic hose 66 to supply the working fluid required for the operation of the cylinders (12, 34).

Combination of the components described above is made as follows.

As shown in FIG. 4, the movable body 50 of the sludge discharge part 30 is mounted on the rail 32 fixed to the scraper body 202 ′, and is formed on the wheel 56. The groove 50 is guided along the rail 32 by a groove.

That is, the sludge discharge unit 30 having the sludge skimmer 36 between the sludge collection plate 14 of the sludge collection unit 10 and the scraper arm 204 is along the rail 32. It is configured to be movable.

As shown in FIG. 5, all driving elements such as the collecting plate cylinder 12 of the sludge collecting unit 10, the transfer motor 54 of the sludge discharge unit 50, and the skimmer cylinder 34 are illustrated. Although not, it is electrically connected to the operation stage 260 is operated by the operation stage 260.

Referring to Figure 5 through the action of the above-described floating sludge removal apparatus 1 as follows.

When the sludge is injured on the surface of the treated water 106 in the settling tank 100, the operator automatically selects the selection switch 260 of the operation stage 260 by manual operation by the operation stage 260 is started. .

That is, as shown in FIG. 5, when the driving motor 222 of the scraper 200 is driven and the scraper 200 rotates, the sensing bar 208 fixed to the lower portion of the scraper body 202 ′. By touching the limit switch 210 is installed on the inner wall of the settling tank (100).

At this time, the operation stage 260 opens the floating sludge discharge valve 244 and stops the drive motor 222, the collection is connected by the hydraulic pump 65 and the hydraulic hose 66. The sludge collection plate 14 and the sludge skimmer 36 are lowered by operating the plate cylinder 12 and the skimmer cylinder 34.

Thereafter, the operation end 260 drives the transfer motor 54 to move the movable body 50 until it is detected by the first limit sensor 32a on the rail 32, and the sludge sludge skimmer. And discharged to the floated sludge discharge box 246 by 36.

When the discharge of the flotation sludge is finished as described above, the operation stage 260 closes the flotation sludge discharge valve 244 and raises the collection plate cylinder 12 and the skimmer cylinder 34.

Then, the operation stage 260 drives the transfer motor 54 to move the movable body 50 until it is detected by the second limit sensor 32b on the rail 32 and then move the transfer motor. By stopping, the discharge of flotation sludge is completed.

As described above, the floating sludge is blocked and collected between the scraper arm 204 and the sludge collecting plate 14 by the sludge collecting unit 10 at all times, and the sludge discharged portion is discharged by the sludge discharge unit 30. It is removed by forced evacuation to box 246.

The present invention is to solve the conventional problems as described above, the purpose is to prevent the injuries (때 上) sludge generated when treating the waste water is prevented from being pushed to the surface of the treated water 106 in the sedimentation tank 100 injuries By forcibly discharging to the sludge discharge box to discharge the floating sludge generated in the sedimentation tank to prevent the outflow to the drainage path (100b) provided in the sedimentation tank 100, and because the normal wastewater treatment is made, it is unnecessary to reprocess the wastewater to reduce costs It is possible to obtain an effect that does not cause environmental pollution.

While the invention has been shown and described with respect to particular embodiments, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

Claims (3)

In the scraper 200 to rotate around the central axis 112 fixed on the support pillar 102 provided in the center of the settling tank 100 to remove the injured sludge, The scraper arm 204 is provided with a sludge collecting plate 14 fixed to a collecting plate cylinder 12 installed under the side surface of the scraper body 202 'and positioned to face the scraper arm 204 to move up and down. Sludge collection unit 10 for blocking and collecting the sludge injured between and; A rail 32 provided in the scraper body 202 'in parallel with the scraper body 202', a movable body 50 moving along the rail 32, and a sludge skimmer under the movable body 50; And a sludge discharge part 30 provided with a waste sludge collected between the scraper arm 204 and the sludge collecting plate 14 to the sludge discharge box 246. Floating sludge removal device. According to claim 1, wherein the moving body 50 is the transfer motor 54 is disposed on the upper portion and the wheel 52 is disposed on the lower portion 52 and the first sprocket coupled to the transfer motor shaft (54a) Floating sludge removal apparatus characterized in that it comprises a chain (62) for connecting the second sprocket (60) coupled to the wheel shaft (56) (58). The sludge skimmer (36) of claim 1, wherein the sludge skimmer (36) is fixed to a skimmer cylinder (34) disposed under the side surface of the movable body (50) to move up and down.