DE2316763A1 - PLANT FOR CLEARING DEDUCED MATERIAL - Google Patents

Description

Patent attorneys

Dr.-lng. by Kreisler Dr.-lng. Schönwald - Dr.-lng.Th. Meyer Dr. Fues Dipl.-Chem. Alek von KreWer DiPLChCOIa Keller Dr.-lng. Klöpsch Dipl.-lng.Seltfng Cologne, Deich man η haue

3rd AP «. I973

Giovanni FALDI, Florence, Italy

System for tree dredging spoil

The invention "relates to a facility for unloading and long-distance transport of semi-solid or pulpy material, which is particularly useful for those coming from the riverbed Dredged material is suitable.

When dredging sea or inland sea bottoms there is always the fundamental problem of clearing dredged material. As a rule, one uses pontoons or other floating bodies built-up excavator system back on conveyor frame, the are loaded with the dredged material and commute between the dredging point and the unloading point.

However, the process has some disadvantages,

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which mainly affects the cost and length of work. affect. Usually this includes on ifti & B. Pre-loaded goods - especially if they are transported from excavators with impeller pumps - have a particularly high proportion of water in order to enable both the conveying and, in particular, the unloading with the usual pumping systems. It is evident that the useless conveyance of such a large amount of water is the

Dredging costs greatly affected. Additional to that, that the distance to be covered by the Praüims mostly is quite large ', since the excavation areas usually have a have greater expansion. Since these are relatively slow moving watercraft, they are The duration of the dredging work as well as the investment costs for a larger number of such vehicles are therefore particularly special high.

Finally, if in some cases the dredging also serves the purpose - the bottom of the water from pollution and To remove harmful material, e.g. from sludge containing hydrocarbons, mercury compounds, etc., must Dredged material that is loaded onto difea pr% ih & over great distances to be led away to not others. Place the same dredging area or the neighboring area to be polluted. In such cases, the use of Dredging buckets are not advisable because they loosen the excavation soil and cause further contamination under the influence of the current would evoke.

Excavators are known which are the subject of previous patents or claims by the same applicant), which are built on pontoons and made with a bucket provided pumping stages exist that are submerged and whose excavator shovels attack the bottom of the river, cutting them and the dredged material iii compressed air chambers or convey pump cylinders, from which the same thing with water mixed material is conveyed to the surface via a flushing line. The main advantage of such excavators lies in the Versatility of their application both in terms of the excavation depth and the type of excavation soil, with a Another advantage through the high excavator economy and

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the low water content of the dredged material is represented,

Flushing systems are also known that are the subject of a earlier patent application by the same applicant those air pumps of the type mentioned above in connection with unloading containers for the long-distance transport of the dredged material can be used in the form of a water suspension with a high solids content. Such systems are especially for the long-distance transport of industrial waste as well as e.g. for the "sanding up" of beach resorts and the like. Useful.

It has now been recognized - which is the main object of the present invention - that those briefly outlined above Issues related to the use of a long-distance haulage and unloading system for dredged material in aqueous suspension can be solved completely and advantageously, in which the dredged material on.Ferntransportprftfemg. Loaded in a closed case and which are characterized in that / that they consist of a floating, with a multitude of compressed air actuated There is a swimming station provided with flushing pumps, the supply line of each Ρμπιρβ being removable with the discharge of a transport pralaas can be connected whichPraJaa between the excavator system and the mentioned flushing system drives in shuttle traffic, and is also characterized by that you are preferably provided with single drive means PraMffi contains a completely, enclosed cargo space for an upper opening for loading the dredged material and a discharge nozzle are provided, which are located on the ground is located at one end of said space, in which space means are also provided to which the cargo space deg Praftse filling dredged material to the aforementioned nozzle and from since to promote from a hose to the aforementioned supply line.

In a first particularly preferred embodiment of the Invention, such means for promoting the dredged material filling the loading space of the platform consist of an inside of the loading space built-in conveyor shovel, which extends from the end of the bridge that is opposite to the end with the nozzle is to move up to the latter.

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In a further embodiment of the invention ^ the particularly Use if there is a lower proportion of pesticides in the dredged material finds ^ the aforementioned funds consist of a collecting pipe that is inside the aforementioned cargo space is arranged along its longitudinal axis and has a plurality of the axis, along distributed openings, which allow the gradual unloading of the dredged material, whereby one of the ends of the aforementioned Sämmelrohr with the aforementioned Discharge stub is in communication.

According to a further, preferred embodiment of the invention, the flushing station is not only characterized by the submerged flushing pump but also by the fact that it is a Mooring system for the frame includes which is provided with such fixed mooring points that the Prahm and in particular its discharge port facing each other in the desired 'preselected position'. the submerged pump, and finally by the fact that means are provided to seal the feed pipe of the submerged pump To set connection with the discharge nozzle of the bridge.

One of the main advantages of the invention is that there is the possibility of transporting the dredged material far away from the dredging site with the least amount of transport effort and at the same time with a small amount of useless water, that the proportion of solids in the dredged material that is transported by the frame and is pumped by the flushing station, can reach 85%.

Another, no less important advantage is that with this system the dredged material - especially when it is contaminating material - runs from the dredger pump to the unloading point without any loss and avoiding any contamination _a

Another advantage is that the processes of creating and deletion of the tank at the flushing station - regardless of the conditions of the lake, the lake, the river or Like. - be accelerated. · _.

. Er./hellen. Above and other features and advantages of the invention from the following description in which on

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Reference is made to the "accompanying drawings, in which

1 a schematic view of the system according to the invention ,

]? ig. 2 a similar view of the plant in a working ■ phase,

3 shows a detailed view of a further, possible embodiment,

4 and 5 'schematic views from the front and from the Side of a special embodiment of the flushing station for the creation and deletion of the Prahme, and

Fig. 6 shows a modified embodiment of the same.

In Fig. 1, the essential components of the system according to the invention, i.e. the transport frame B and the pumping stage P are shown shown.

The pumping stage P comprises a floating pontoon 10 on which the air compressor and the distributor 12 for the operation of the submerged Pump stage 13 are built.

The pumping stage is suspended from a supporting boom 14- via a rope 16 and comprises a plurality of air pumping chambers or cylinders (mostly three), in which according to one determined by the manifold 12 of a known type Order compressed air is pumped through the hose line 17, while the lines 18 and 19 dis feed line or represent the unloading of the dredged material.

The adjustable rope 2G holds the flanged connector end the line 18.

It must be emphasized that the pontoon or float P has a plurality of submerged pumping stages 13 can operate, depending on the performance of the system and, above all, the hourly output of the excavator station o

After the function of the pumping stage due to the previous Technology is well known, there is no need to

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Writing the same.

The transport frame B comprises a floating body 21, whose, inner cavity 22. are filled with the dredged material 23 can and. is closed at the top with a deck 24, which has a hopper 25, optionally with a gate valve can be closed to prevent harmful gases emitted by the dredged material from escaping impede.

At one end of the loading space 22 there is provided a discharge socket 26 with a flange, on which a hose line: 27 is connected, the free end of which is suspended adjustable via a rope 28 on a lifting arm 29, which is set up on deck 24. Inside the cavity 22 is a conveyor blade 30 along the longitudinal axis of the Prahmes arranged movably by means of traction cables 31, which are guided over pulleys 32 and actuated by the winch 33 ' will. The return ropes 34 are actuated by the winch 35.

As can be clearly seen from FIGS. 1 and 2, the front surface is the conveying shovel 30 is designed so that the displacement of the dredged material 23 to the discharge nozzle 26 is facilitated will.

From Fig. 2 it can be seen that when the Prahm B has come into the vicinity of the pumping stage P, the two ends of the lines 27 and 18 are connected to each other, whereupon the winch 33 is put into action, so that the shovel 30 to the the other end of the loading space 22 is pulled and the unloading of the dredged material 23 takes place, which alternately fills the individual cylinders of the pumping stage 13, from which the dredged material is then flushed to the desired distance. It was found that, thanks to this' method, the dredged material can have a solids content of 23 to 85% , which value enables an assessment of the advantage that can be achieved by the invention.

It is clear that for the displacement of the conveyor shovel 30 suitable sliding guides are to be provided. Any other, equivalent solution is not excluded, e.g. if.

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the discharge nozzle 26 assumes a central position, and two symmetrically arranged blades from one end each the middle against each other. ' be pushed.

It goes without saying that something else, similar Method, e.g. using a compressed air or plunger piston system could find in order to advance the shovel 30 during the unloading process of the dredged material 23.

Fig. 3 shows another embodiment of the Prahmes, which in the ■ It is useful in cases where the dredged material contains a particularly high proportion of solids and its toughness is significantly lower. In this case, the dredged material is transported outside of the hold 22 Collector tube 36 is provided, which has several openings 37, through which the rather thin fluid dredged material thanks to its own weight to the pump cylinders of the compressed air pumping station P. got. *

With the previous, referring to Fig.1. to 3 described System, the discharge line connected to the connecting piece of the platform must be connected to the supply line of the submerged flushing pump get connected. This solution offers the advantage of adaptability and quick changeover from one excavation site to another in connection with the adjustments the actual excavator; however, this solution can take a certain amount of time in the practical case around the two To connect cables to each other, which are usually quite large and not easy to handle, especially in rough seas are.

The embodiment shown in Fig. 4- and 5 continues for the purpose of significantly accelerating the connection processes of the lines, even if a more complicated one, preferably A fixed facility is assumed, which is beneficial in the case of a larger workload because of the savings in both time and labor costs and because of the possibility of the operation make the connection independent of the possible skill of the operators. The system according to Fig. 4- and 5 underlying principle is to provide landing points for the Prahme so that they are always in the

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correct position for the submerged irrigation pump.

For this purpose, the discharge nozzle 26 of the frame 21 is controlled by a drain valve 50 (which is operated hydraulically, pneumatically or by hand) and is provided with a large flange 51 on which the rim flange 52 abuts, the latter by the rubber seal 53 is supplemented, the two flanges being in connection with the supply line 18 of the submerged pump 13. The flange 52 forms the end piece of a conical connector -54- to which the supply line Λ 8 is attached; the conical connector 54- is in turn connected to a floating bead 55, which is preferably designed like an air-filled Kohrkranz and such a content that the swimming tendency of the whole (floating bead, conical nozzle and pump feed line) is guaranteed.

As can be clearly seen from FIGS. 4 and 5, the flotation bead is anchored downwards by means of a set of four ropes 56 which are operated via the pulleys 57 by four co-rotating drums 58 or by a single four-drum winch. Soxtfohl the pulleys 57 as well as the winches 58 are either on two pile walls 59 - preferably of the type with driven piles which are embedded in the bed of the water and carry the platforms 61, which platforms and the other devices both for the operation of the submerged pump (motor compressor, distributor etc.) as well as for lifting and lowering the same (e.g. lifting jack and rope) - or built on two pontoons with retractable legs supported on the river bed.

The pile walls or pontoons 59 close a corridor from preselected width, in which one or more banks enter one after the other, which in a precisely defined Position in the centered position opposite the assembly formed by the floating bead, conical socket and flange. Is to it is imperative that all praise have the same external form have (which may be achieved by inserting planks or other material can be achieved), so that the boats can be moored in the aforementioned passage and everyone Discharge nozzle exactly with the corresponding, aforementioned

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floating assembly is aligned.

The operation of this embodiment of the invention is the following:

When the pram gets into the area of the unloading point, it drives by its own drive or it is pushed into the passage, which is delimited by the two pile walls, until it hits a pre-built anchorage point (marked 62), whereby safety is given in that the discharge nozzle 26 and the corresponding flange 51 are aligned with the conical coupling defined by the action of the air-filled ¹ Schwimmwulstes has a tendency to rise. Any minor misalignments can therefore be neglected, since the filling opening of the conical socket has a much larger diameter than the discharge socket of the cage.

The floating assembly (floating bulge, supply line and conical socket) is anchored below the platform floor by means of the cable set 56 when the platform is in place. After the Prahm was anchored in the right place, the winch is operated, so that the feed line of the pump and thus also of the conical socket or funnel is lifted, by the action of the floating bulge, until the flange of the conical socket with its rubber seal on the large Flange rests around the discharge nozzle in the pram base.

When the ropes 56 pulling the float downward relax be, this means that the adhesion of the two flanges to each other is perfect, so that the drain valve opened and the emptying of the barge and the remote flushing of the dredged material can begin.

As the pram gradually empties, it strives to swim harder or to lift itself from the water; here but the ropes of the Vxertrommel winch or the four co-rotating If the winds are relaxed, the floating bulge will automatically lift and thereby the contact of the conical socket with it the discharge nozzle maintained, eliminating any loss potentially harmful dredged material in the dredging zone

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is prevented.

When the emptying of the cream is finished, the reverse is done proceeded, i.e. first the discharge is closed locked and then by means of the single four-drum winch or the four co-rotating winches, the floating bulge after pulled down, with the pump continuing for a short while is actuated to completely flush the supply line around the pump body. ■ ■

In any case, the prahm - = as soon as the conical socket and the associated flange of the discharge pipe is far enough away - immediately returned to the dredging system will.

Are there any reasons to believe that what is filling the tank? Dredged material is too tough, one of the methods described above can be used to facilitate unloading Water can be added using a suitable pump.

The corridor, which was described in the training as a pile wall, can of course consist of two or one Series of heavily built pontoons supported on the ground by retractable feet, or eventually also consist of firmly anchored pontoons, the latter solution in areas with strong tidal fluctuations as turns out to be less practical, because the length of the fastening ropes of the lines would have to be constantly changed, which Lines a completely rigid corridor for the entrance of the. Prahmes should secure. '.

Instead of using funds to form a gear is in some cases the possibility of using the same structural elements (stage on pile wall, pontoon on retractable Feet (or anchored pontoon), the same results to achieve that the Prahm or the Prahm be moored next to these structural elements, which serve as a quay.

In Fig. 6, the embodiment is shown in which a mooring pontoon instead of the corridor, it is provided on which pontoon the prams to be unloaded are to be moored,

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Indeed, the embodiment of Figure 6 may prove to be more practical and easier to adapt, including at in the open sea, especially when pontoons with retractable feet are used, because this causes the disturbances as a result the tidal range, as well as the need to build fixed facilities that can hardly be used again, are avoided, In addition, it can be laid very quickly in rough seas, both at the beginning and at the end of the work.

For this purpose it will be sufficient to equip these pontoons with a suitable To equip the lifting gear for the driven pump body and the associated floating and conveying device, so that it can be lifted without changing the submerged outline of the float and therefore without hindering its movement au.

Another solution that is particularly suitable for prehouses without self-propulsion and the towing of one or more Punting with a single tugboat or, in the case of a larger number of prams, with a second boat at the end for one enables faster application, consists in the arrangement. one or more pontoons used in a row, so that they form a quay, the pontoons being either anchored or retractable Place your feet on the bottom of the water where the pump body and the lifting gear for the floating bulge on the prahmboden to be fastened, held by the pontoons themselves ο

So far, the floating bulge has always been filled with air and at the end of the dredging work it has been pulled down via winches and ropes drawn, but the system could also be made so that the bead deflates and is filled with water if the conical socket is to be lowered while the reverse process is carried out, if you want to lift the cone socket.

From the above description it is now clear that the invention provides an ideal solution to the problem of dredging spoil can be evacuated, especially by avoiding the unnecessary transport and reflux of large "amounts of water

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and the time of the commuting of the. Prahmes to a large extent is decreased.

That explicit reference was made to dredging systems means not that this excludes any other application of the system according to the invention, such as for the clearance of industrial waste, -. as far as this is in the form of a suspension occur in a liquid.

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Claims (1)

PATENT CLAIMS System for long-distance transport and unloading of dredged material in aqueous suspension, in which the dredged material on long-distance transport is loaded, characterized in that it consists of a floating, with at least one, but preferably several, air-operated flushing pumps provided station, wherein the Feed line for each pump to the discharge port of the Transportprahmes is releasably connected, which Prahm between the dredging system and the said flushing system in shuttle traffic drives, and also geken thereby. n sign that the Prahm, which is preferably provided with individual drive means, has a completely enclosed cargo space contains, which has an upper opening for loading the Baggergute.s and a discharge opening that is on The bottom of the same cargo space is recessed and is designed so that it is connected to the said discharge port with the The aforementioned supply line for the flushing conveying can be connected to the mentioned swimming station, in this loading space means are also provided to push the dredged material filling it towards the discharge opening. 2. Conveyor and unloading system according to claim 1, characterized in that the aforementioned smock for conveying the loading space of the Prahmes filling the dredged material, consist of a conveyor shovel which is displaceable from one to the other end of the loading space of the Prahmes, so that the dredged material is pushed towards the end at which the aforesaid discharge opening is cut out, with drive means for moving the conveying shovel and its return into the starting position also being provided. after the hold at the floating station has been emptied, _etc. J. Conveying and unloading system according to claim 1, dad u <■ chgeke ix η ν, calibrates that the aforementioned Ji'öj'dorrtü tbel consist of at least one collecting pipe · the 309848/0376 arranged in the cargo space parallel to the longitudinal axis of the platform is, the length of which is equal to the length of the hold, with upwardly directed openings for removal in the manifold of the dredged material are provided during the unloading process of the crane. ~ 4. Conveying and unloading system according to claim 1, d a d u r c h .g e k e η η ζ e i without t that said Rinsing station except for at least one submerged compressed air rinsing pump also has a landing gear for the pram, which is provided with fixed attachment points so that the pram - and in particular its .discharge nozzle in a preselected one Location reaches the submerged pump, and that means are also provided for the feed line of the submerged pump in sealing connection with the discharge port of the cage bring to. "· 5 · Plant according to patent claim 4 ·, d a d u r c h characterized j that the aforementioned passage from in the river bed anchored pile walls *, the two Carrying stages on which to operate the submerged Pump required equipment is set up. 6. Installation according to claim 5 _9, characterized in that the aforementioned platforms consist of two or more floating pontoons which are provided with telescopically retractable feet which are supported on the bottom of the water in order to make the entire facility stable. 7. System according to patent claims M and 5 _? characterized in that said means to the supply line of the submerged pump with the discharge port of the bridge in sealing. To bring connection, have a cone-shaped connection attached to the free end of the supply pipe, this conical connection ending in a wreath flange carrying a seal, which is intended to rest on a large-area flange which is located on the bottom of the platform in the area of 309848/0376 Discharge nozzle and arranged concentrically to this is, wherein said conical socket is attached to means • which ensure the buoyancy of the same conical socket and are anchored adjustable downwards 8. Plant according to claim 7, characterized in that it is marked that the means mentioned to ensure the buoyancy of the conical socket, from one with There are air-fillable bead, which is attached to the said ropes, which by concurrent, on the aforementioned Winches built on platforms' can be tightened. 309848/0376