KR930007805B1 - Dirty water treating apparatus - Google Patents

Abstract

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Description

Muddy water treatment device

1 is a longitudinal sectional view showing one embodiment of the processing apparatus of the present invention.

2 is a plan view of the processing apparatus of FIG.

3 is an enlarged sectional view taken along line 3-3 of FIG.

4 is an enlarged cross-sectional view taken along line 4-4 of FIG.

5 is an enlarged cross-sectional view taken along line 5-5 of FIG.

6 is a cross-sectional view of the same position as in FIG. 5 showing an example using another pulley.

7 is a perspective view showing one embodiment of a filter.

8 is a longitudinal sectional view showing another embodiment of the processing apparatus.

* Explanation of symbols for main parts of the drawings

10 processing device 12 settling tank

14: muddy water inlet 16: muddy water outlet

18: discharge mechanism 20: first conveying unit

22: second conveying unit 24, 26: endless belt

28-42: pulley 46: drive mechanism of discharge mechanism

62: guide 64: conveying mechanism

72: endless belt 76: carrier surface

78: drive mechanism of the transfer mechanism 90: filter

92,94: plate member 100: granular material

102: partition plate

The present invention relates to a treatment apparatus for sedimentation of particulate matter in muddy water, and more particularly, to a treatment apparatus suitable for treatment of muddy water generated in tunnel excavation work, boring work, pile installation work, removal work of sediment soil of dam, and the like. .

Conventionally, as a treatment method for removing particulate matter such as sand from muddy water, muddy water including granular material is introduced to a sedimentation tank, and the granular material is precipitated in the sedimentation tank to deposit the granular material deposited on the bottom of the sedimentation tank. There is a method of pumping out of the settling tank by the lamp.

However, in this method, a large amount of water is discharged together with the granular material, and therefore, the collected granular material and the water must be separated again by the solid liquid separation device because the granulated material containing the large amount of water is discharged.

An object of the present invention is to provide an apparatus for treating muddy water with a small amount of water discharged together with particulate matter in a sedimentation tank.

The apparatus for treating muddy water containing the granular material of the present invention includes a tank for accommodating the muddy water and a discharging means for receiving the sediment settled in the tank and discharging it to the top of the tank, the discharging means being at the bottom of the tank. A belt having a first conveying part for receiving the granular object and conveying it to a predetermined part in the tank and a second conveying part for conveying upward in the tank while sandwiching the granular material conveyed by the first conveying part between a pair of endless belts. It includes a conveyor.

Particulates in the muddy water introduced into the tank are settled on the first conveying part, conveyed to the bottom end of the tank by the first conveying part, and then conveyed upward of the tank by the second conveying part.

According to the present invention, since the second conveying part conveys the granular material in a sandwiched state between a pair of endless belts, the second conveying part is discharged together with the granular material as compared with the case where the granular material is discharged from the tank by a backhoe, a bagus, or the like. The amount of water to be made is small and therefore, the discharged granular material and water do not need to be separated by a solid-liquid separator.

The belt conveyor used in the present invention includes a first endless belt having a first portion extending from one end of the jaw toward the other end and a second portion extending upward from the bottom of the other end of the jaw to define the first conveying portion; It is also possible to use a conveyor comprising a second endless belt having a portion extending upwardly from the bottom at the other end of the jaw to define a second conveyance in cooperation with the first portion of the first endless belt.

In this case, the first endless belt includes a first pulley disposed at one end of the bottom to extend along the bottom of the jaw, a second pulley disposed at the other end of the bottom to extend parallel to the first pulley, and a second pulley. The second pulley disposed above the jaw so as to extend in parallel and the fourth pulley arranged so as to extend parallel to the second pulley at a position slightly rearward from the second pulley, and the second endless belt is arranged on the fourth pulley. And the fifth pulley disposed above the jaw so as to extend in parallel with the third pulley.

The incoming goods conveyed to the upper side of the tank by the discharging means can be conveyed to the outside of the tank by the conveying means. As a conveying means for this, it is preferable to use a belt conveyor which receives the granular material conveyed to the upper side of a tank by a discharge means, and receives this granular object and conveys it along the conveying surface which obliquely extends upwards.

Using such a belt conveyor, the granular material is conveyed by the belt conveyor, but the water in the granular material flows downward along the conveying surface, so that the amount of water discharged together with the granular material is reduced.

In addition, by placing a filter which blocks the passage of particulate matter contained in the conveying surface of the conveying means and allows the passage of water to stand at the lower end of the conveying surface, it is possible to prevent the conveyed particulate matter from flowing back into the tank together with the water flowing down the conveying surface. have.

The filter includes a pair of first plate members facing each other and extending in the vertical direction and a plurality of second plate members disposed at intervals in the vertical direction between the first plate members, and one end in the width direction of the second plate member is disposed. A louver shape including the second plate member inclined so as to be higher than the other end can be used.

In this case, the filter is arranged such that one end thereof becomes the rear side in the conveying direction of the granular material and the other end thereof becomes the front side.

By providing inlet and outlet of the muddy water in the tank, the muddy water can be treated continuously.

The muddy water treatment apparatus of the present invention moves the muddy water introduced into the tank from the plate-shaped guide and inlet which guides the granular material in the muddy water to the first conveying part from the top to the bottom, and then moves from the bottom to the top. It is desirable to arrange means in the tank to define the flow path of the muddy water.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The muddy water treatment apparatus 10 shown in FIG. 1 thru | or FIG. 4 includes the rectangular parallelepiped sedimentation tank 12 which opened the upper side. The settling tank 12 has an inlet 14 and an outlet 16 for the muddy water. The inlet port 14 is defined by a pipe for supplying muddy water to one end in the longitudinal direction of the settling tank 12 from above in the illustrated example. On the other hand, the outlet 16 is defined by a hole in one side wall of the settling tank in the width direction and a pipe continuous to it.

The treatment apparatus 10 also includes a discharge mechanism 18 for discharging the granular matter in the settling tank 12 to the outside of the tank. The discharge mechanism 18 is conveyed by the first conveying part 20 and the 1st conveying part 20 which receive the granular material settled in the sedimentation tank 12, and convey this to the predetermined part along the bottom part of the sedimentation tank 12. And a belt conveyor provided with a pair of endless belts 24 and 26 defining a second conveying portion 22 for conveying the granular material again from the bottom of the settling tank 12 upwards.

Endless belt 24 is a pulley 28, bottom disposed at one end of the bottom to extend in the width direction of the sedimentation tank 12 along the bottom to define the first and second conveying portion 20, 22 Pulleys 30, 34, and 36 arranged to extend in parallel with the pulley 30 on the other end of the pulley 30 and parallel to the pulley 28 and the settling tank 12 And a pulley 38 arranged to extend parallel to the poly 30 at a slightly oblique position above the pulley 30.

On the other hand, the endless belt 26 has pulleys 36 and 38 for defining the second conveying part 22 together with the endless belt 24 and a pulley 40 disposed at intervals in the vertical direction at intervals between the pulleys 36 and 38. ) And 42 are arranged to be traversed. The portions of the endless belts 24 and 26 between the pulleys 36 and 38 are superimposed on each other so as to convey the granular materials in the sandwiched state.

Each pulley 28, 30, 32, 34, 36, 38, 40 is supported by a plurality of supports 44 fixed to the settling tank 12, respectively. The drive mechanism 46 of the discharge mechanism 18 is supported by the support 44 supporting the pulleys 32, 34, 36. Rotation of the drive mechanism 46 includes sprockets 50 and both sprockets 48 and 50 fixed to the sprocket 48 attached to the rotary shaft of the drive mechanism and to the pulley 34 on which the endless belt 24 spans. It is transmitted to the endless belt 24 via the chain 52 for circulating.

Pulley 38 has a larger diameter than other pulleys. The pulley 38 has a shaft 54 supported on the support 44 and a roller 56 rotatably supported on the shaft as shown in FIG. The roller 56 has a cylindrical outer circumferential surface in the illustrated example. As shown in FIG. 6, an annular plurality of grooves 58 may be formed in the outer peripheral portion of the roller 56. As shown in FIG.

At the bottom of the settling tank 12, a pair of guides 60 for preventing the endless belt 24 from being bent at the first conveying portion 22 and a pair of granular objects in the muddy water are guided to settle the first conveying portion 22. Guide 62 is arranged.

The processing apparatus 10 includes the conveyance mechanism 64 which conveys the granular material discharged | emitted upward of the sedimentation tank 12 by the discharge mechanism 18 to the exterior of the sedimentation tank 12. As shown in FIG. The conveying mechanism 64 includes a pair of frames 66 extending in the longitudinal direction of the settling tank 12 on top of the settling tank 12, a pair of pulleys 68 and 70 supported at both ends of the frame and a discharge mechanism ( In order to receive the granular material discharged from 18) and to convey it, the endless belt 72 is arranged to traverse both pulleys 68 and 70.

The frames 66 are arranged at intervals in the width direction of the settling tank 12 and are attached to the settling tank 12 by a plurality of fittings 74. The conveyance mechanism 64 is arrange | positioned so that the position of the pulley 68 may be higher than the position of the pulley 70. As a result, the conveying surface 76 of the granular material by the endless belt 72 is slightly inclined with respect to the horizontal line.

The angle of inclination of the conveyance surface 76 with respect to the horizontal line may be a value such that the granular material on the endless belt 72 does not flow to the pulley 70 side with water, for example, 3-15 degrees, preferably 5- You can do it 10 degrees.

The frame 66 is supported by a plurality of guide rollers 78 for preventing the endless belt 72 from bending and the drive mechanism 80 of the transfer mechanism 64. Rotation of the drive mechanism 80 is via a sprocket 82 attached to the rotation axis of the drive mechanism and a sprocket 84 connected to the pulley 68 and a chain 86 that traverses both sprockets 82 and 84. It is transmitted to the endless belt (72).

A pair of guide plates 88 are attached to each frame 66 by fittings 90 so as to extend along both sides of the granular material conveying surface 76 of the endless belt 72. As shown in FIG. 2, the guide plate 88 prevents the granular material from falling down on the side of the endless belt 72 in the width direction.

The conveying mechanism 64 further has a filter 92 which prevents passage of particulate matter contained in the conveying surface 76 of the endless belt 72 and permits passage of water. The filter 92 has a pair of plate members 94 extending in the vertical direction opposite to each other and a plurality of plate members 96 arranged at intervals in the vertical direction, as shown in FIG. It has louver phenomenon. The plate member 96 is inclined so that one part of these width directions may be upward rather than the other end part. The filter 92 is fixed to the frame 66 so that one end of the plate member 96 is in the rear side in the conveying direction of the granular material and the other end is in the front side.

The upper and lower ends of the filter 92 are in contact with the endless belts 24 and 72, respectively. According to this, the granular material to be conveyed to the endless belt 72 is prevented from flowing down from the conveying surface 76 and the granular material attached to the endless belt 26 is scraped off by the conveying mechanism 64.

Although the discharge mechanism 28 has a structure in which granular objects are dropped and discharged at the start end of the transfer path of the transfer mechanism 64 in the example of illustration, as shown in FIG. 8, the endless belt of the discharge mechanism 18 ( The upper part of 26 may be extended to the upper part of the conveyance mechanism 64, and the granular material may be dropped in the middle of the conveyance surface of the conveyance mechanism 64. As shown in FIG. In this case, a plate member 98 may be provided in place of the filter 92 so that the granular material attached to the endless belt 26 is scraped off by the transfer mechanism 64.

In the muddy water treatment apparatus shown in FIG. 8, the endless belt 24 is not long to the pulley 34, and instead the endless belt 26 is extended to the pulley 34. The rotation of the drive mechanism 46 is transmitted to the endless belt 24 via the pulley 32.

In addition, as shown in dashed lines in FIGS. 1 and 8, the settling tank includes one or more partition plates 100 to prevent the muddy water introduced into the settling tank 12 from the inlet 14 directly reaching the outlet 16. 12) may be installed inside. In this way, the muddy water introduced into the settling tank 12 from the inlet port 14 moves from the top to the bottom, and then moves from the bottom to the top.

In use, the discharge mechanism 18 and the conveyance mechanism 64 are activated during treatment of the muddy water. Granular materials such as sand and soil in the muddy water settle on the first conveying part 22 of the discharge mechanism 18 while the muddy water flows from the inlet port 14 side to the outlet port 16 side in the settling chamber 12. .

The granular material 102 settled on the first conveying part 22 is conveyed by the endless belt 24 to the pulley 38 side through the 1st conveying part 20, and then the endless belts 24 and 26 are carried out. It is conveyed upward through the 2nd conveyance part 22 in the state sandwiched in between. When the granular material 102 is sandwiched by the endless belts 24 and 26 in the second conveying part 22 as shown in FIG. 5, the muddy water existing between the granular objects 102 is a granular material. Squeezed from For this reason, the water content of the granular material 102 which conveys the 2nd conveyance path 22 is low.

When the pulley 38 shown in FIG. 6 is used, the effect of squeezing out muddy water between granular objects becomes higher, and the moisture content of the granular material 102 conveyed through the 2nd conveyance part 22 becomes lower.

The precipitate conveyed to the upper part of the settling tank 12 by the discharge mechanism 18 is discharged from the discharge mechanism 18 to the conveying mechanism 64, and the hopper disposed outside the settling tank 12 by the conveying mechanism 64. It is discharged to a receiver 104 such as a hopper or a truck.

The water remaining between the granular objects 102 transferred to the conveying mechanism 64 flows downwardly conveyed by the conveying mechanism 64 at the time of conveyance by the conveying mechanism 64, and passes through the filter 92 to the settling tank 12. Falls on. For this reason, the moisture content of the granular material 102 conveyed to the container 104, such as a hopper, becomes lower.

Since the amount of water discharged from the discharge mechanism 18 to the transfer mechanism 64 is small, the amount of water flowing through the transfer surface 76 is not large enough to cause the fluid 102 on the transfer surface 76 to flow down. Since the plate member 96 of the filter 92 is inclined in the reverse direction of the conveying surface 76 of the conveying mechanism 64, the granular material on the conveying surface 76 is filtered by water passing through the filter 92. It does not flow into the settling tank 12 through).

That is, in order to drop the granular material 102 on the conveyance surface 76 to the settling tank 12 through the plate member 96 of the filter 92, the granular material 102 is upwards between the plate members 96. The amount of water discharged from the discharge mechanism 18 to the transfer mechanism 64 is small, but the amount of water falling through the filter 92 to the settling tank 12 is small, and the transfer surface ( The granular material above 76 does not flow through the filter 92 to the settling tank 12.

The conveying speed of the conveying mechanism 64 is preferably set to a speed later than that of the discharging mechanism 18, in particular a speed of 1/2 to 1/10. In this way, since the deposit 102 stays on the conveying surface 76 for a long time and much water flows along the conveying surface 76 to the filter 92 side, the dehydration effect in the conveying mechanism 64 is large and the receiver ( The moisture content of the granular material 102 accommodated in 104 becomes lower.

Claims (9)

The granular material is a device for treating muddy water, which includes a tub 12 for accommodating muddy water and a discharging means 18 for receiving the granular material settling in the tank and returning it to the top of the tank, wherein the discharging means is provided at the bottom of the tank. The first conveying part 20 which receives a granular object and conveys it to the predetermined part in a tank, and the granular material conveyed by this 1st conveying part are inserted between a pair of endless belts 24 and 26 in a tank, An apparatus for treating muddy water, comprising a belt conveyor having a second conveying portion 22 for conveying upward. The belt conveyor comprises a first endless belt 24 and a first portion having a first portion extending from one end of the jaw toward the other end along the bottom and a second portion extending upward from the bottom at the other end of the jaw to define the first conveying portion. 1 Scope of claim Claim 1 including a second endless belt 26 having a portion extending upwardly from the bottom at the other end to define a second conveyance in cooperation with a second portion of the endless belt. Device. The first endless belt is a first pulley disposed at one end of the bottom to extend along the bottom of the jaw, a second pulley disposed at the other end of the bottom so as to extend in parallel with the first pulley, and positioned slightly above the settling tank. A second pulley arranged to extend in parallel with the second pulley and a fourth pulley arranged to extend in parallel with the second pulley following a position slightly above the second pulley, wherein the second endless belt An apparatus for treating muddy water according to claim 2, arranged to traverse the fifth pulley disposed above the fourth pulley and the tank so as to extend in parallel with the third pulley. Patented belt conveyer having a conveying surface 76 extending obliquely upwards, the conveying means 64 having a belt conveyor for receiving the granular material conveyed upwards of the tank by the discharge means 18 and conveying it to the outside of the tank. Claims 1. Apparatus for treating muddy water according to claim 1. An apparatus for treating muddy water according to claim 4, comprising a filter (92) disposed so as to stand on a lower end of the conveying surface, the filter preventing the passage of particulate matter contained in the conveying surface and allowing the passage of water. The filter 92 is a pair of first plate members 94 extending in a vertical direction to face each other and a plurality of second plate members disposed at intervals in the vertical direction between the first plate members. And a second plate member 96 inclined so that one end in the width direction of the upper part is higher than the other end, and the filter further includes one end of the second plate member being the rear side in the conveying direction by the conveying means 64 and the other. The muddy water treatment apparatus of Claim 5 arrange | positioned so that an edge part may become a front side. The tank is a muddy water treatment apparatus of claim 1 having an inlet (14) and outlet (16) of muddy water. Apparatus for treating muddy water according to claim 7 comprising a plate-shaped pair of guides 62 arranged in the tank to guide the granular material settling in the tank to the first conveying part 20. Apparatus for treating muddy water according to claim 7 comprising means for defining a flow path of muddy water in the bath to move the muddy water introduced into the bath from the inlet from top to bottom and then from bottom to top.

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