KR100797946B1 - Apparatus for dewatering sludgy as controling press force - Google Patents

Abstract

The present invention relates to a dewatering device capable of adjusting the amount of pressing down to increase the dewatering rate of the sludge by fastening the device for adjusting the amount of pressing down the upper roll portion for pressing the sludge.

To this end, the present invention and the sedimentation sludge discharge portion 21 consisting of a reprecipitation tank 20 for reprecipitating the sludge 3 and a screw conveyor 24 for discharging the sludge 20 'reinserted in the lower portion and , A lower belt conveyor portion 41 composed of a plurality of support rolls 49 provided between the driving roll 42 and the driven roll 47 for dewatering the discharged sludge 20 ′, It consists of a hydraulic cylinder (60) fastened to the driven roll (35) and a plurality of support rolls (33) provided between the driven roll (35) and the driving roll (34) so as to adjust the reduction force on the belt conveyor (41). Provided is a sludge dewatering apparatus capable of adjusting the amount of reduction is composed of the upper belt conveyor portion (31).

As described above, the present invention can increase the dewatering efficiency by dewatering the sludge to the upper and lower belt conveyor parts while preventing the belt deformation, and at the same time, the belt replacement of the dewatering device and the equipment troubles can be reduced, thereby enabling efficient operation. It has an effect.

Dewatering Equipment, Sludge, Sedimentation Tank, Hydraulic Cylinder, Belt, Conveyor, Support Roll

Description

Sludge dewatering device which can control the amount of rolling reduction {APPARATUS FOR DEWATERING SLUDGY AS CONTROLING PRESS FORCE}

1 is a schematic diagram schematically showing a conventional sludge dewatering apparatus and a dewatering process,

Figure 2 is a schematic diagram schematically showing the overall configuration and dewatering process of the sludge dewatering apparatus capable of adjusting the amount of reduction according to the present invention,

3 is a partial front view of the sludge dewatering apparatus capable of adjusting the amount of reduction according to the present invention.

♣ Explanation of symbols for main part of drawing ♣

2: sedimentation tank 3: sludge 20: re-precipitation tank 24: screw conveyor

21: sedimentation sludge discharge part 42: lower drive roll 42: lower driven roll

49: lower support roll 41: lower belt conveyor portion 35: upper driven roll

60: hydraulic cylinder 34: upper drive roll 33: upper support roll

31: Upper belt conveyor section

The present invention relates to a dewatering apparatus capable of adjusting the amount of pressing down, and more particularly, to a dehydrating apparatus capable of adjusting the amount of pressing down to increase the dewatering rate of the sludge by fastening a device for adjusting the amount of pressing down on the upper roll portion for pressing the sludge. It is about.

In general, as shown in Figure 1, the cooling water 1 used in the regeneration plant is guided to the settling tank 2 through the pipe to precipitate the sludge (3). That is, since the coolant 1 guided to the settling tank 2 contains fine particles, the coolant 1 is guided to the settling tank 2 and precipitates under the settling tank 2 due to the specific gravity of the fine particles over time, thereby forming sludge 3. Done.

After the fine particles are precipitated as described above, the waste water of the upper portion of the sludge (3) is discharged and recycled or transported to the waste water treatment plant, the sludge (3) is transferred to the signer driver (5) through the discharge pipe (4), When the sludge is precipitated in the signer driver 5 and solidified again, it is impossible to discharge the sludge, so that the sludge is always stirred with the agitator 6 installed inside the signer driver 5 to prevent the coagulation phenomenon.

The agitated sludge 3 'is transferred to a belt press type dewatering device 10 installed below to perform dehydration. The reason for introducing the belt press type dewatering device 10 is from the signer driver 5. In the case of the sludge discharged by stirring, since the cooling water component is significantly higher than the fine particles, the belt press type dehydrator is used to separate the cooling water component and the particulate component.

In the conventional belt press type dewatering device 10, the cooling water 1 'flows to the side by simply pressing down the belt 12 connected to the upper drive roll 11, and only the sludge 3' is pressed down to discharge the hopper. The sludge 3 'dropped into the hopper 13 is transported by the conveying means 14 to be landfilled and disposed of as waste.

In addition, the dewatered wastewater 1 'is collected by the wastewater collection tank 16 and flows back into the settling tank 2 by the pump 17 to undergo the dehydration process as described above.

However, the conventional belt press type dewatering device 10 is inferior in efficiency compared to the operation time, and it is impossible to control the rolling amount of the driven roll 15 of the upper roll part, so that the dewatered sludge 3 'contains a large amount of water. There is a problem that the surrounding environment is polluted during transport or transportation.

In addition, since the belt 12 is rotated and reduced only by the rotation of the driving roll 11, a considerable load is applied to the driving roll 11, causing a malfunction of the equipment, and when a large amount of sludge is introduced into the dehydration apparatus 10, the specific gravity There is a problem that the increase in the dehydration belt supported by the rolls on both sides is sagging to lower the dewatering efficiency, further dehydration is impossible.

The present invention derived to solve the above problems is provided with a hydraulic cylinder in the upper roll portion is added to the pressing force, the belt deflection phenomenon is provided with a plurality of support rolls between the driving roll and the driven roll of the upper and lower belt conveyor The purpose of the present invention is to provide a dehydration apparatus capable of adjusting the amount of reduction to increase the dewatering efficiency by reducing the failure rate, and to reduce the failure rate of equipment.

In order to achieve the above object, the present invention is a sedimentation sludge discharge unit consisting of a reprecipitation tank for reprecipitating the sludge precipitated in the sedimentation tank, and a screw conveyor for discharging the re-precipitated sludge is inserted into the lower portion thereof;

A lower belt conveyor part comprising a plurality of support rolls provided between the driving roll and the lower driven roll to transfer the sludge discharged from the settling sludge discharge part without sagging;

Located at the top of the lower belt conveyor portion to the upper belt conveyor consisting of a hydraulic cylinder fastened to the lower driven roll to adjust the pressing force to the lower belt conveyor portion, and a plurality of support rolls provided between the lower driven roll and the upper drive roll. It provides a dewatering device capable of adjusting the amount of reduction, characterized in that configured.

In addition, the present invention provides a dewatering device capable of adjusting the amount of reduction, characterized in that the plurality of support rolls provided between the driving roll and the driven roll of the lower belt conveyor portion is composed of a support roll having a smaller diameter toward the driving roll,

On the other hand, the present invention provides a dewatering device capable of adjusting the amount of reduction, characterized in that the plurality of support rolls provided between the driving roll and the driven roll of the upper belt conveyor portion is composed of a support roll having a smaller diameter toward the driving roll.

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

Figure 2 is a schematic diagram showing the overall configuration and the dehydration process of the dehydration apparatus capable of adjusting the reduction amount according to the invention, Figure 3 is a partial front view of the dehydration apparatus capable of adjusting the reduction amount according to the present invention.

As shown in Figures 2 to 3, the dewatering device capable of adjusting the reduction in pressure according to the present invention collects the cooling water (1) to the primary sedimentation in the sedimentation tank (2) precipitated sludge (3) in the sedimentation tank ( 2) The secondary precipitate is discharged to the reprecipitation tank 20 installed below.

That is, when a predetermined time elapses after being collected in the primary sedimentation tank 2, various fine particles contained in the cooling water 1 precipitate, and the sewage sludge is separated from the fine particles of the waste water having a relatively low pollution. Wastewater from which various particulates are separated is discharged and transferred to a wastewater purification facility.

The sludge (3) precipitated in the primary settling tank (2) is discharged to the reprecipitation tank 20 through the discharge pipe (4) provided at the bottom of the settling tank (2), the reprecipitation tank 20 is the primary precipitated sludge ( This is to increase the dehydration efficiency by precipitating 2) to 2nd settling sludge (20 ') which has a reduced water content than the 1st settled sludge (3).

As described above, the sludge 20 'precipitated in the reprecipitation tank 20 is separated into wastewater and secondary precipitated sludge, and the wastewater is drained from the drainage facility 22 installed in the upper portion as in the first precipitation. It is discharged to the facility, the secondary precipitated sludge 20 'is discharged through the screw conveyor 24 penetrating in a square from up to the discharge port 23 provided in the reprecipitation tank 20.

Here, the reason why the screw conveyor 24 is used as a discharge means is that the secondary precipitated sludge 20 'has a relatively low water content, which makes it difficult to naturally discharge through the discharge port 23 and discharged secondary precipitates. In order to further reduce the water contained in the sludge 20 ', the discharge of the secondary precipitated sludge 20' leads to discharge to the dewatering device through the screw conveyor 24 installed to be inclined downward.                     

The sludge 20 ′ discharged through the screw conveyor 24 is configured to fall on the lower belt conveyor part 41 of the sludge dewatering device composed of the upper belt conveyor part 31 and the lower belt conveyor part 41. .

That is, the dewatering device is a principle of dehydrating water contained in the sludge 20 'by compressing the sludge 20' discharged to the lower belt conveyor part 41 by the upper belt conveyor part 41, and the lower belt conveyor part. The 41 is formed longer than the upper belt conveyor portion 31 to allow sludge to enter.

The driving roll 42 which imparts the driving force of the lower belt conveyor 41 has a drive shaft 44 and a bearing block 45 and 45 'provided with a reduction gear 43' of the electric motor 43 fixedly mounted to the side. Driven by axial coupling, the tension of the belt 46 can be adjusted by moving the position of the driven roll 47 provided on the sludge inlet on the fixed frame 48 side to side.

In addition, the lower belt conveyor portion 41 has a plurality of support rolls 49 supporting the rotating belt 46 between the driving roll 42 and the driven roll 47 so as to be rotatable on the fixed frame 48. Is installed, the support roll 49 is provided to overcome the deflection phenomenon of the belt 46 generated during the sludge compression.

In the installation of the support roll 49, an important point is that the diameter of the support roll 49, which is installed from the driven roll 47 of the sludge inlet part to the drive roll 42 of the sludge discharge part, becomes more toward the driving roll 42. It is to install a support roll 49 of a small diameter.

This reason is because when the supporting rolls with the same diameter as the driving roll 42 and the driven roll 47 are installed, the gap between the rolls and the rolls must be widened, causing the belt to sag when the sludge is pressed. In order to prevent the belt sag by reducing the gap between the roll and the roll yarn by using the support roll 49 having a smaller diameter toward the driving roll 42 in consideration of the decrease in the dehydration efficiency.

In other words, when a roll having the same diameter is disposed as a supporting roll, sludge to be dewatered is positioned between the roll and the roll, so that the belt is deformed by the pressed sludge, which reduces the dewatering efficiency and frequently changes the deformed belt. In addition, since a heavy load is generated on the driving roll, the supporting roll of a smaller diameter is gradually installed toward the driving roll as described above.

The upper belt conveyor portion 31 for pressing the sludge 20 'by pressing the lower belt conveyor portion 41 is supported on the fixing frame 32 in the same manner as the lower belt conveyor portion 41. It is provided between the drive roll 34 and the driven roll 35, the drive roll 34 is the reduction gear 40 'of the electric motor 40 fixedly mounted on the fixed base (54, 54') on one side Drive shaft 51 having a) is coupled to the bearing block (52, 53) to give a driving force to the upper belt conveyor portion 31 is rotatable, the tension roll 36 on the drive roll 34 The belt 37 of the upper belt conveyor part 31 is tensioned by tightening the tension roll 36 upwardly or downwardly by fastening to the fixed base 38.

Since the upper belt conveyor part 31 pushes down the lower belt conveyor part 41, belt deformation occurs like the lower belt conveyor part 41. Therefore, as the lower belt conveyor portion 41, the support roll 33 of the smaller diameter between the driving roll 34 and the driven roll 35 toward the driving roll 34 in the fixed frame 32 By installing and supporting the conveyor belt 37, the gap between the roll and the roll yarn is reduced to prevent deformation of the upper belt.

In addition, the hydraulic belt is fastened to the upper belt conveyor portion 31 so as to be flowable to the flow frame 61 fastened to the driven roll 35 so as to adjust the amount of reduction of the upper belt conveyor portion 31. 60 is provided.

The hydraulic cylinder 60, which is fixed to the flow frame 61 of the driven roll 35 of the upper belt conveyor unit 31, has an upper belt conveyor with the drive roll 34 fixed to the fixed frame 32 as an axis. The upper belt conveyor can be adjusted according to the amount of sludge or the amount of water in the sludge when the sludge is compressed and dehydrated while the gap between the lower belt conveyor part 41 is adjusted by moving the part 31 up and down. Done.

In addition, the wastewater collecting unit 55 for collecting wastewater dewatered from the dewatering device configured as described above is installed in the lower space of the lower belt conveyor unit 41 to store the collected wastewater in the wastewater storage tank 16, and the wastewater storage. When a predetermined amount of wastewater is collected in the tank 16, the wastewater pump 17 is pumped back to the settling tank 2 to repeat the above process.

Hereinafter, the operation of the sludge dewatering apparatus capable of adjusting the amount of reduction according to the present invention will be described in detail.

The sludge dewatering apparatus which can control the reduced amount according to the present invention configured as described above receives the first settled sludge 3 from the settling tank 2 and then performs the second settling in the reprecipitating tank 20, and then the reprecipitation tank 20 The sludge 20 'is transferred to the dehydration apparatus installed above the reprecipitation tank 20 by the screw conveyor 24 provided at the lower outlet 23.                     

The sludge 20 'transferred by the screw conveyor 24 falls to the lower belt conveyor portion 41, and the sludge 20' is provided to be able to flow on the upper portion of the upper belt conveyor portion 31 while falling. The hydraulic cylinder 60 is operated downward to squeeze the introduced sludge 20 'to dewater.

At this time, a plurality of support rolls 49 provided between the driven roll 47 and the driving roll 42 of the lower belt conveyor portion 41 support the sludge that is compressed and conveyed on the belt 46 and the lower belt. Prevent the sag of 46,

A plurality of support rolls 33 provided between the driven roll 35 and the driving roll 34 of the upper belt conveyor unit 31, which compresses the lower belt conveyor unit 41 by the hydraulic cylinder 60, It is to prevent the deformation of the upper belt 37 by the sludge.

The hydraulic cylinder 60 is dewatered sludge by expanding the cylinder in order to add a pressure reduction to the upper belt conveyor unit 31 when the amount of sludge introduced or the water content of the sludge is high. Is dropped to the wastewater collecting unit 55 installed below the lower belt conveyor unit 41 and is led to the wastewater storage tank 16.

When the amount of the collected wastewater is filled in the wastewater refinery tank 16, the wastewater pump 17 is operated to transfer the collected wastewater back to the settling tank 2 to repeat the dehydration process as described above.

The sludge dewatering apparatus which can control the reduced amount of pressurization according to the present invention is capable of controlling the amount of reduced solidified sludge by re-precipitating the precipitated sludge and dewatering the upper and lower belt conveyors while preventing belt deformation, thereby increasing the dehydration efficiency. The belt replacement and equipment trouble of the dewatering device is reduced, which makes the operation more efficient.

Claims (3)

In the belt press type dewatering device for dewatering precipitated sludge, Sedimentation sludge discharge part consisting of a reprecipitation tank 20 for reprecipitating the sludge 3 precipitated in the sedimentation tank 2 and a screw conveyor 24 for discharging the sludge 20 ' inserted into the lower portion thereof ( 21) and, Lower belt conveyor part consisting of a plurality of support rolls 49 provided between the driving roll 42 and the driven roll 47 to transfer the sludge 20 'discharged from the settling sludge discharge portion 21 without sagging. With 41, Located at the upper end of the lower belt conveyor portion 41, the hydraulic cylinder 60 is fastened to the driven roll 35 to adjust the pressing force to the lower belt conveyor portion 41, the same driven roll 35 and the driving roll Sludge dewatering device capable of adjusting the amount of reduction, characterized in that consisting of an upper belt conveyor portion 31 consisting of a plurality of support rolls 33 provided between (34). The method of claim 1, The lower belt conveyor portion 41 is a plurality of support rolls 49 provided between the driving roll 42 and the driven roll 47, the rolling reduction is characterized in that consisting of a support roll having a smaller diameter toward the driving roll This is possible sludge dehydrator. The method of claim 1, The upper belt conveyor portion 31 is characterized in that the plurality of support rolls 33 provided between the drive roll 34 and the driven roll 35 is composed of a support roll having a smaller diameter toward the drive roll 34 Sludge dewatering device with adjustable press amount.

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