KR100394973B1 - Sludge dredge apparatus - Google Patents

Abstract

The present invention seeks to simplify the structure while enabling continuous suction dredging regardless of water depth in dredging gelatinous Onito. It also allows dredging without increasing the water content of Onito. Opening the lower side of one side and connecting the Onito blower 2 which draws Onto by movement and the upper part of the Onito blower, and the slurry-like Onto fluid which becomes a carrier carrier are sprayed with high pressure and dredging in the blower A jet pump body (3) for sucking onto, a supply pipe (4) for supplying a high pressure carrier carrier to the jet pump body (3), a discharge pipe (6) connected to the discharge end of the jet pump body, and the discharge A dredged Onito storage tank (7) connected to the pipe and storing dredged Onito may be provided.

Description

Onito dredging device {SLUDGE DREDGE APPARATUS}

The present invention relates to an Onito dredging device for dredging Onito.

Onits deposited in ports, rivers, reservoirs, and dams lose their function if left unattended.

As the dredging means, methods such as being pumped by a bucket or by an air lift in parallel with vacuum suction are known.

The onot which has been pumped up is stored in a shipboard tank and transported to a predetermined place as it is, or sent from a tank to a suitable treatment facility, and the treatment facility is dehydrated or agglomerated with a flocculant to solidify to a certain extent. After it is made, it is disposed of.

Oni dredging, when the clam shell bucket is employed, the onito, which tends to be liquefied, needs to be slowly pumped up so as not to leak during the onito, and also non-continuous work. Moreover, even when the bucket is inserted into the Onito layer, it cannot be said that the workability is excellent, such as getting Onito in the water.

Onto the vacuum suction of Onto is a continuous operation and the work efficiency is remarkably excellent, but there are various problems.

First, the vacuum pump for sucking up is usually installed on the ship and on the ground, and there is a physical limit to the height and distance that can be sucked up.

Second, in order to maintain the vacuum of the suction tank of the sucked Onito, a corresponding volume of sealing tank and a vacuum fan is required, and only one tank can be used to release the vacuum and pressurize it. There is a need for non-continuous work. In order to perform continuous operation, at least two sealed tanks should be installed in parallel to alternately perform vacuum suction and pressure discharge, thereby increasing the size of the facility itself.

Third, in order to suck, it is necessary to make the sludge of the sludge flow into the fluid state so that it can be sucked. So far, propeller agitation has been performed. For this reason, the motor must be assembled into the suction member in a state where it can be used in water, and thus it becomes a complicated equipment, and if there is fibrous waste in Onito, it is immediately wound on the propeller, causing the operation to stop. In addition, when the Onito is stirred with a propeller, water flows into the negative pressure portion of the propeller and the water content of the slurized sludge is increased to increase the moisture content of the sludge, which causes dehydration, flocculation, and solidification of the dredged Onito after dredging. In the treatment, an increase in the required amount of the treatment agent may of course lead to a decrease in treatment efficiency.

Accordingly, an object of the present invention is to provide a new Onito dredging device that can simplify the overall structure of the dredging device, dredging irrespective of the dredging depth, as well as to prevent the increase in moisture content of Onito during dredging.

1 to 6 show a first embodiment of the Onito dredging apparatus according to the present invention,

1 is a full side view.

2 is a plan view of the same;

3 is a front view of the blown body;

4 is a side view of the same;

5 is a partial cutaway perspective view of the same;

Fig. 6 is a sectional view of a tip portion of the protrusion tube.

7 is a cross-sectional view of the same jet pump.

8 is a side view showing a second embodiment of the Onito dredging apparatus according to the present invention.

** Description of symbols for the main parts of the drawing **

1 hull part 11 hull

12: anchor column 13: moving operation mechanism of the protrusion pipe

2: Onito blower 21: Blowing part

211: box-shaped body 212: opening

213: connector portion 214: information board portion

215: opening and closing door 216: opening and closing operation mechanism of the opening and closing door

22: guide side wall portion 23: screen portion

24: rotational connection 241: support arm

242: connecting frame 243: shaft hole

244: shaft 25: tilt attitude control unit

3: jet pump 31: suction chamber

32: nozzle 33: mixing pipe

34: air introduction pipe 35: flow pipe

4: supply pipe 5: slurry pump

6: discharge tube 7: storage tank part

71: storage tank 72: take-out pump

73: export pipe line 8: disturbance prevention plate

The Onito dredging device according to the present invention is a slurry-shaped Onito which is connected to the upper part of the Onito blower 2 which opens the lower side of one side and draws the Onito by movement, and is directly connected to the Onito blower. A jet pump body 3 for sucking the dredged ono in the blown body by high pressure injection, a supply pipe 4 for supplying a high pressure carrier carrier to the jet pump body 3, and a discharge end of the jet pump body. And a dredged Onito storage tank (7) connected to the discharge pipe and storing dredged Onito.

Therefore, when the ono blower is moved, the ono is compressed to some extent while being compressed, and at the same time, when the carrier carrier fluid is supplied to the jet pump, the blown ono is swept into the carrier carrier fluid and mixed into a slurry to form a discharge tube. Will be returned to the water or ground. Therefore, by installing the pump of the supply part in the water or above the ground, it is not influenced by the limit of dredging length, and the structure located in the water can be dredged even though it is very simple, and also fibrous waste (rope, wire, etc.) Even if it is, it is dredged with Onito without any problem.

In addition, the present invention is to make the carrier carrier in the slurry dredged onito state by the suction of the jet pump in the apparatus, employing the slurried onito as the carrier carrier, without increasing the water content of Onito during dredging It can be slurried and piped to the water phase or the ground.

Hereinafter, the Onito dredging apparatus according to the present invention will be described according to the embodiment shown in the accompanying drawings.

1 shows an example in which a dredging apparatus according to the present invention is installed on a dredger, and includes a hull portion 1, an onito blower body 2, a jet pump body 3, and a supply pipe 4 constituting a supply portion. And a pump 5, a discharge tube 6, a storage tank 7 and the like.

The hull portion 1 is an anchor column 12 and a protruding pipe (supply pipe 4 and discharge pipe 6) in the hull 11 having a moving function (engine, screw, directional key, etc.) like the conventional dredger And a slurry pump 5, a storage tank 71, a discharge pump 72, and a storage pump portion 7 serving as the discharge line 73 are arranged on the hull 11; , The slurry pump 5 connected to the storage tank 71 is connected to the supply pipe 4, and the discharge pipe 6 is connected to the storage tank 71 to connect the supply pipe 4 and the discharge pipe 6 together. The bundle of protrusions is projected from the hull 11 so that the protrusions can be inclined in the water by the moving operation mechanism 13 to be inclined in the water and can be moved left and right.

Then, the jet pump 3 is inserted into the tip of the protruding tube and the blower 2 is installed below the jet pump 3.

The concrete structure of the Onito blown body 2 includes a blown portion 21, a guide side wall portion 22, a screen portion 23, a rotational connection portion 24, and a tilted attitude control portion 25. It is made.

The blowing portion 21 is provided with the opening 212 on both sides of the lower side of the box-shaped main body 211, and the connecting pipe portion 213 is provided above, and the guide plate portion 214 protrudes from the bottom side of the opening 212. And an opening / closing door 215 inside which the one side of the left and right openings are opened in the opening portion 212 and the other side is closed, and at the same time, the opening / closing operation mechanism (for example, a cylinder for operation) of the opening / closing door 215 ( 216) may be provided. The guide side wall part 22 is attached in the state which the edge | tip widens from both sides of the opening part 212. In addition, the screen portion 23 is formed in the shape of a longitudinal grid in front of the opening 212 to prevent the blowing of large solids such as stones.

The pivotal connection part 24 includes a support arm 241 which is integrally connected to the blowing part 21, and a connection frame 242 connected to the support arm 241 and disposed above the connector pipe part 213. And a shaft hole 243 provided on the connecting frame 242 and the left and right sides thereof, and connected and supported by an appropriate shaft body 244 so as to be rotatable directly under the jet pump 3 to be described later. ) And the suction chamber of the jet pump 3 can be communicated with the flexible connection pipe 245.

The inclined posture control unit 25 operates the inclined posture control unit (cylinder) 24 to operate the inclined posture control unit (cylinder) 24 as a whole of the intake unit 21, the guide side wall unit 22, the screen unit 23, and the pivot connecting unit 24. It is possible to make a proper inclination attitude around the.

The jet pump 3 is inserted between the supply pipe 4 and the discharge pipe 6 as described above, and includes a suction chamber 31 connected to the blowing portion 21 and a nozzle connected to the supply pipe 4 ( 32, the horn pipe 33 connected to the tip of the nozzle 32 and opened in the suction chamber 31, the air introduction pipe 34 connected to the horn pipe 33, and the horn pipe 33 It consists of a flow pipe (35) which is formed to face and is connected to the discharge pipe (6). In addition, the air inlet pipe 34 is tied together to the protruding pipe and installed up to the hull 11. As shown in Fig. 7, the nozzle diameter of the nozzle 32 connected to the tip of the supply pipe 4 is a mixed pipe. It is formed smaller than the inner diameter of (33), and the internal volume of the suction chamber 31 should be larger than the internal volume of the mixing pipe 33, and the nozzle diameter of the nozzle 32 is approximately one of the internal diameter of the mixing pipe 33. In other words, the performance of the jet pump 3 is determined by the ratio between the nozzle diameter of the nozzle 32 and the inner diameter of the mixing pipe 33 and the internal volume of the mixing pipe 33 and the mixing pipe 31. It is determined by the ratio of the internal volume, and the ratio of the nozzle diameter of the nozzle 32 to the inner diameter of the discharge pipe 6 and the ratio of the inner diameter of the supply pipe 4 and the discharge pipe 6 to the performance of the jet pump 3. Although not important, it is preferable to make the inner diameter of the discharge pipe 6 larger than the inner diameter of the supply pipe 4, as shown in FIG. For example, the inner diameter of the discharge pipe 6 is preferably about 1.5 times larger than the inner diameter of the supply pipe 4.

Next, the dredging operation of the above embodiment will be described.

Normally, normal water may be used as a conveyance carrier, but the slurry-like sludge (B) dredging previously may be put in the storage tank 71, and may be used. First, the hull 11 is stabilized and the protruding pipe is inclined to settle down, and the blown body 2 is settled in the surface layer onto (Aelto in gel state) A which is a dredging object. Then, the guide body 214 is placed on the ground surface C of the lower portion of the surface sludge sludge layer A to ship the ship body 11 or the mobile operation mechanism 13 is operated to measure the protruding pipe. To move in the direction of The opening 212 on the side of the moving direction is opened and the opening on the other side is closed.

By the movement, Onito A is naturally press-fitted from the opening 212 into the main body 211 by the guide side wall portion 22 and the guide plate portion 214 to the jet pump 3. At the same time, the slurry pump 5 is operated to inject the carrier carrier (slurry onto B) from the nozzle 32 through the supply pipe 4. This injection becomes a mixed state in which air was introduced, and is injected to the flow pipe 35.

The fluid present in the suction chamber 31 at the time of the mixed gas injection is swept up by the mixed gas jet, is sucked, mixed with the suction pipe 35, and transported in the discharge pipe 6. The suction naturally sucks the Onto A on the gel of the dredging object existing in the main body 211 of the blower 2, and the pump 5 responds to the lateral movement of the blower 2. If you turn on the gel under water Onito (A) is carried in the ship in order to dredging is made.

Then, the dredged gel-like ontto (A) is swept up by the mixed jet of the jet pump (3) and sucked and mixed, and the whole is made into a uniform slurry ontite (B) and is once stored in the storage tank (71), As it is, part of it will be used as a carrier.

In addition, the slurry onito (B) stored in the storage tank 71 is driven to the discharge pump 72 is sent to the ground treatment facility through the discharge pipe 73. Here, the sludge by the jet pump 3 The dredging explains the discharge process in more detail. When the slurry pump 5 is operated, a slurry (fluid) is supplied to the supply pipe 4 at a pressure of about 12 kg / cm 2, and a nozzle formed at the tip of the supply pipe 4. When ejected at high pressure and high speed at (32), the interior of the suction chamber 31 is vacuumed (in this case, "vacuum" here) by a slurry (fluid) to this high pressure, high speed water flow, generally means a pressure state lower than atmospheric pressure. ) Is formed and onto is sucked from the blown body 2. At this time, the diameter of the supply pipe 4 and the discharge pipe 6 is similar, but the inner diameter of the tip of the nozzle 32 is equal to the inner diameter of the discharge pipe 6; Balls having less than 1/2 (1/4 in cross section) and 3/4 sections of cross-section are introduced from air inlet pipe 34 Onito sucked from the air and the blown body 2 is discharged together. In other words, the pressure of the discharge pipe 6 is lower than the pressure of 12 kg / cm 2 of the supply pipe 4 but is higher than the atmospheric pressure. Onito and air are mixed and transported, and finally, onito is sucked up from the onito blowing body 2 and sucked into the suction chamber 31, and the discharge pipe 6 is a storage tank 71 in which atmospheric pressure acts. Onto, which is connected to and sucked in, is discharged through the discharge pipe 6 together with the slurry injected from the nozzle 32 to be stored in the storage tank 71. At this time, the slurry passing through the supply pipe 4 When comparing the flow rate of the slurry and Onito discharged through the discharge pipe 6 and the flow rate of Onito, the flow rate of the slurry and Onito discharged through the discharge pipe 6 is much faster than the flow rate of the slurry in the supply pipe (4) The diameter of the tube 6 is equal to the diameter of the feed tube 4 Even if it makes it work, the flow volume in the discharge pipe 6 may become larger than the flow rate in the supply pipe 4, and eventually, the slurry injected from the nozzle 32 and the sucked onito are sufficiently discharged to the storage tank 71 side. That is, the cross sectional area, flow velocity, pressure, and fluid density at the tip of the supply pipe 4, the discharge pipe 6, and the nozzle 32 are respectively S _{(supply pipe)} , S _{(discharge pipe)} , and S _{(nozzle )} . _Tip) , where S _{(supply line)} = S _{(discharge line)} , V _{(supply line)} , V _{(discharge line)} , V _{(nozzle end)} , P _{(supply line)} , P _{(discharge line)} , P _{(nozzle end)} , ρ _{If (supply pipe)} , ρ _{(discharge pipe)} , and ρ _{(nozzle tip)} , the flow rate in the pipe connecting the supply pipe 4, the discharge pipe 6 and the jet pump body 3 of the present invention, the flow rate is "V _{(supply pipe)} <V _{(discharge pipe)} <V _{(nozzle tip)} , the flow rate V _{(feed pipe)} in the supply pipe 4 is lower than the maximum flow rate by the slurry pump (5), the discharge pipe (6 ) is a flow rate V _{(discharge pipe)} in The flow rate at the tip of the nozzle 32 of the jet pump body 3 will be close to the maximum flow rate by the slurry pump 5 and will appear faster than the maximum flow rate by the slurry pump 5. It is made in proportion to the maximum pressing force, flow rate, and the cross-sectional area of the nozzle tip (5), and if the cross-sectional area S _{(nozzle tip)} of the _{nozzle tip is} 1/10 of the cross-sectional area S _{(supply pipe)} of the supply pipe 4, The flow rate will be 1/10 of the flow rate at the tip of the nozzle. In addition, the high pressure slurry through the nozzle, the air sucked in the atmospheric pressure, and the suction slurry in the (atmospheric pressure + hydraulic pressure) state in the jet pump body 3 flow. The hydrodynamic continuous equations in which the fluid is applied to the perfect fluid are not applicable, but they generally satisfy the continuous equation. As a result, it is important to understand the principle of operation of the present invention. The flow rate in the tube 3 will be slower than the maximum flow rate by the slurry pump 5, and the flow rate in the discharge tube 4 will be close to the maximum flow rate by the slurry pump 5, and the nozzle 32 Since the flow rate at the tip is lower than the maximum flow rate by the slurry pump 5, it is possible to dredge Onito without any additional power in addition to the slurry pump 5. The diameters (cross-sectional area) of the supply pipe 4 and the discharge pipe 6 are made the same, and it was confirmed that there is no problem in dredging Onito.

In particular, in the above embodiment, the aquatic structure can be simplified because it is not necessary to agitate the dredged gel onito (A) in order to facilitate the pipe conveying. Of course, the gel-onito (A) is pulled by forcibly pressurizing it into the main body 211 of the blown body 2, and is also swept up by the aeration spray during inhalation, sucked, mixed, and naturally sliced into the shipboard. Pipeline transportation can be easily realized. In addition, the dredging operation by using slurried sludge as a carrier for transport does not increase the water content of the sludge, so that no flocculant is required and the dehydration treatment, flocculation treatment, and solidification treatment after dredging, such as a decrease in the amount of solidifying agent, are efficiently carried out. In addition, by installing a sensor that can detect the presence or absence of the ontto supplied to the Onto blowing unit 21, when the supply of Onto is stopped, the suction can be stopped to prevent the intake of unnecessary water.

In addition, the present invention, as shown in the above embodiment, does not install all the mechanisms on the hull, but only the protruding pipe and the motion control mechanism of the protruding pipe are installed on the hull, and all other members are installed on the ground so that appropriate piping (hoses, etc. Flexible pipe), or a part of the ship may be installed on the hull or the whole may be disposed on the ground.

In addition, although the jet pump body is made into a mixing type, it may be used as an ejector or a non-agitating type of ordinary jet pump.

FIG. 8 illustrates a second embodiment of the present invention. In this embodiment, the depth of the dam, the hose, etc. is deep, and the height of the sedimentation layer is high, but the specific gravity of the sedimentation sludge is low. This is applied when the sludge is agitated by mechanical agitation, vortex, etc. and mixed with the upper water to cause water pollution.

In this embodiment, the solid-type disturbance preventing plate 8 is provided at a position higher than the blown body 2 near the distal end of the protruding tube formed by the supply pipe 4 and the discharge pipe 6.

In the present embodiment, when the height of the deposited layer is high, the supply pipe 4 and the discharge pipe 6 are lowered vertically as shown in the drawing, and the surrounding upper layer Onito is dredged at the lowered position, where the upper layer is to be recessed. Even if a phenomenon occurs, the upper and lower portions are blocked by the disturbance preventing plate 8 to prevent water pollution caused by disturbance of Onito and water.

The disturbance preventing plate 8 is manufactured in such a size that no vortex in the "D" part of FIG.

As described above, according to the present invention, a slurry-like oni fluid, which is a carrier carrier, is connected to the oni blower body 2 which opens the lower side of one side and draws onito by movement, and is directly connected to the onito blower body. A jet pump body (3) for high-pressure injection and suction of dredged Onito in the blown body, a supply pipe (4) for supplying high pressure of the carrier to the pump body (3) and a discharge tube (6) from the pump body As a result, the structure of the entire apparatus is simplified, which solves the limitation of dredging depth in the suction type dredging device and prevents the increase in water content of Onito during dredging. In addition, by installing a disturbance preventing plate near the tip of the supply pipe and the discharge pipe, it is possible to prevent water pollution due to disturbance of Onito and water.

Claims (4)

Opening the lower side of one side and connecting the Onito blower 2 which draws Onto by movement and the upper part of the Onito blower, and the slurry-like Onto fluid which becomes a carrier carrier are sprayed with high pressure and dredging in the blower A jet pump body (3) for sucking onto, a supply pipe (4) for supplying a high pressure carrier carrier to the jet pump body (3), a discharge pipe (6) connected to the discharge end of the jet pump body, and Oni dredging device characterized in that it is provided with a dredging Onito storage tank (7) connected to the discharge pipe to store the dredging Onito. The oni dredging apparatus according to claim 1, wherein the conveying carrier is made into a sledged dredged onito state by suction of a jet pump. According to claim 1, wherein the supply pipe and the discharge pipe is installed in the hull so as to be able to rotate up and down, left and right, and the Onito blowing body and the jet pump body is provided on the front end of the supply pipe and the discharge pipe. Device. The onto dredging apparatus according to claim 1 or 3, wherein a solid-type disturbance preventing plate (8) is provided near the distal ends of the supply pipe (4) and the discharge pipe (6).