JPH11100859A - Mud collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly suck and transfer a taken-in dredge object even in the case of the water content of the taken-in dredge object being low in a mud collector. SOLUTION: A mud collector has a mud collection box 10 provided with an intake 11 for a dredge object on one side and communicated with a suction pipe 20 sucking the taken-in dredge object on the other side. The mud collector is provided with a first water discharge means 30 for jetting water along the internal wall surface of the mud collection box 10 from the intake 11 side in the mud collection box 10 toward the communicating side with the suction pipe, and a second water discharge means 40 jetting water along the internal wall surface of the suction pipe 20 toward the dredge object transfer side of the suction pipe 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a mud extractor used for dredging an object to be dredged such as mud, sand, soil and the like deposited in the ocean, river, lake and marsh.

[0002]

[Prior Art] Improving the quality of water such as the ocean, preserving the environment,
Alternatively, from the viewpoint of improvement, dredging of dredged objects such as mud, sand, soil and the like deposited in the ocean is required. Various methods are used for such dredging,
From the viewpoint of preventing as much as possible the spread of the dredged object and the like and the surrounding environment from being damaged during dredging, a mud collection box equipped with an intake for the dredged object and a suction pipe connected to the mud collection box A mud sampler equipped with the following is used.
In such a mud collector, by moving the mud collector at the bottom of the water with the intake side of the mud collecting box facing forward, dredging is performed in the mud collecting box of the mud collector moved in this way. The target object can be taken in a relatively calm state, and the dredged object thus taken in is suctioned and transferred to the water, that is, onto a dredge ship or the like, through the suction pipe by a vacuum pump connected to the suction pipe. Thus, the dredged object can be removed in a state where it is unlikely to spread.

[0003]

However, in this kind of mud sampler, in order to make a dredged object to be dredged smoothly,
It is desirable to prevent the taken-in dredging object from adhering to the inner wall surface of the mud collection box or the inner wall surface of the suction pipe as much as possible.

In general, when the dredged material to be taken in has a high water content and a low viscosity, there is no noticeable hindrance to suction and transfer of the dredged material in this kind of mud sampler. , Simply using this kind of mud collector,
In general, when the moisture content of the taken dredging object is low and the viscosity is high, the degree of adhesion of the taken dredging object to the inner wall surface of the mud collection box or the inner wall surface of the suction pipe increases. This makes it difficult to smoothly suction and transfer the dredged object.

In view of the above, the present invention aims at smoothing suction and transfer of the taken-in dredged object in this type of mud sampler, even when the taken-in dredged object has a low water content. The purpose is to be able to.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a mud sampler is provided on one side with an inlet for an object to be dredged, and on the other side. A sludge collection box communicated with a suction pipe for sucking in the dredged material taken in, and on the inner wall surface of the collection box, from the intake port side of the collection box to the communication side to the suction pipe. A first water discharging means for jetting water along the suction pipe, and a second water discharging means for jetting water along the inner wall surface of the suction pipe toward the transfer destination side of the object to be dredged by the suction pipe. It had the structure of having.

According to this configuration, the water content of the dredged object taken into the mud collecting box from the intake port is low, and therefore, the fluidity of the dredged object is low, and the viscosity of the dredged object is high. Even in such a case, the water is ejected from the first water discharging means along the inner wall surface of the mud box, so that the object to be dredged is not attached to the inner wall surface. The dredged object can be smoothly transferred toward the continuous side of the above by the suction action of the suction pipe.

[0008] Further, in a state where the object to be dredged is prevented from adhering to the inner wall surface by the water jetted from the second water discharging means along the inner wall surface of the suction pipe, the suction from the mud collecting box is performed. The dredged object transferred to the pipe can be smoothly transferred toward the transfer destination side of the dredged object by the suction pipe.

Further, the water spouted from the first water discharging means and the second water discharging means increases the water content of the dredged object taken in, thereby increasing the fluidity of the dredged object in accordance with the transfer. And the transfer can be made smoother.

According to a second aspect of the present invention, in the mud sampling apparatus according to the first aspect of the present invention, the suction pipe further communicates with an upper part of the mud collecting box on the inner side of the mud collecting box. And a second spouting means is provided at the bottom of the mud collector box immediately below the suction pipe, a spout for spouting water toward the suction pipe, and a dredging in the suction pipe by the suction pipe. And a spout for spouting water in the transfer direction of the object.

According to this configuration, the dredged object taken into the mud collecting box and transferred to immediately below the suction pipe can be easily sent into the suction pipe.
Further, the dredged object sent into the suction pipe in this way can be smoothly transferred in the transfer direction of the dredged object in the suction pipe.

According to a third aspect of the present invention, in the mud collector according to the first or second aspect of the present invention, the mud collection box communicates with the suction pipe from the intake side of the object to be dredged. Along the side, the left and right inner wall surfaces are inclined so as to gradually reduce the interval between the pair of opposed left and right inner wall surfaces, and the first water discharging means drains water along the left and right inner wall surfaces. It was assumed to have a spout for spouting.

According to this configuration, the water spouted from the first water discharging means is directed along the left and right inner wall surfaces from the intake port side of the mud collector box to the communication side to the suction pipe due to the inclination of the left and right inner wall surfaces. The dredged object can be smoothly transferred to the communicating side of the suction pipe along the inclination of the left and right inner wall surfaces.

According to a fourth aspect of the present invention, in the mud collector according to the first, second, or third aspect of the present invention, the mud collecting box sucks in from the intake side of the dredged material. At least a part of the inner wall surface on the bottom side is inclined so as to gradually increase upward toward the communication side to the pipe, and the first water discharging means is arranged along the inner wall surface on the bottom side. And a spout for spouting water.

According to this configuration, the water ejected from the first water discharging means is sucked from the intake side of the mud collecting box along the bottom inner wall surface due to the inclination of the inner wall surface on the bottom side. It is possible to flow toward the communication side to the pipe, and the taken-in dredging object can be smoothly transferred to the communication side of the suction pipe along the inclination of the inner wall surface at the bottom side.

According to a fifth aspect of the present invention, the mud collecting box according to the first, second, third, or fourth aspect of the present invention is provided with a mud collecting box on the inlet side of the object to be dredged. Crushing the dredged object to be taken, having cutter means having a cutter part for stirring, and having a third water discharging means for jetting water toward the cutter part of the cutter means. .

According to this configuration, when the dredging target is taken into the mud collecting box, the dredging target is crushed by the cutter portion and the water jetted from the third water discharging means toward the cutter portion. In addition, the water content of the whole crushed dredging object can be made uniform by the stirring by the cutter portion, and the water content can be increased by the jetted water. In other words, according to this configuration, even when the water content of the dredging target is low, the fluidity of the dredging target is increased without requiring suction of seawater, lake water, etc. from outside the mud collector. The dredging target can be smoothly taken into the mud collection box.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One of the typical embodiments of the present invention will be described below with reference to FIGS.

FIG. 1 shows a main part of the mud sampler S in a direction substantially perpendicular to the direction Ra in which the rudder R protrudes so that the configuration of the mud collector S according to this embodiment can be easily understood. , And is shown as a vertical section. FIG. 2 shows a pair of sludge collection boxes 10 and 10 constituting the mud sampler S in FIG.
Are shown in the same orientation as in FIG. 1 and in the state of a longitudinal section. (In the figure, each spout 31, 32, 41, 4
The directions in which the water spouts out from 2, 92 are indicated by arrows, respectively. FIG. 3 shows an outline of the configuration of the mud sampler S as viewed from the inlet 11 for the dredged object, with the cutter means 70 and the third water discharging means 90 omitted. Also,
FIG. 4 shows the mud collector S in a cross-sectional state with the components of the mud collecting space 10 ′ omitted, so that the configuration of the mud collecting chamber 10 ″ in the mud collector S is particularly easy to understand. ing.

FIG. 5 shows a vertical section of a nozzle 31 ′ provided with a lateral water outlet 31 constituting the first water discharging means 30. FIG. 6 shows a nozzle 32 ′ provided with a vertical water discharge port 32 constituting the first water discharge means 30.
FIG. 7 shows the nozzle 32 ′ provided with the vertical water outlet 32 shown in FIG.
It is shown as viewed from the left side in FIG.

FIG. 8 is a side view of a central nozzle 41 'provided with a bottom water outlet 41 constituting a second water discharging means 40. FIG. 9 is a view showing the second water discharging means. The extended nozzle portion 41 "provided with the bottom water outlet 41 constituting 40 is shown as viewed from the side.
FIG. 10 shows an in-pipe water discharge port 4 constituting the second water discharge means 40.
The ring body 42a having the nozzle 42 'provided with the nozzle 2 is shown in a plan view.

FIG. 11 shows an outline of the mud sampling apparatus viewed from the intake port 11 for the dredged object so that the configurations of the cutter means 70 and the third water discharging means 90 can be easily understood.
FIG. 12 shows a vertical section of a nozzle 91 ′ provided with a water discharge port 91 constituting the third water discharge means 90.

The mud extractor S according to this embodiment is suitable for being used as a mud extractor S attached to the tip side of a rudder R of a so-called swing type dredger.

Such a swing type dredger has a rudder R on the bow side which is moved from the surface of the water toward the water, and the bow side having the rudder R is provided on the stern side and driven into the bottom of the water. It has a function to swing left and right around the spud that is
The dredging object taken into the mud sampler S attached to the tip side of the ladder R with this swing is suctioned under negative pressure on the ship, and the dredging object is dredged with the width of the swing. In such a dredger, generally, after one swing is completed, the spud is pulled out from the underwater ground, and after the dredger is moved forward or backward a predetermined distance,
The spud is again driven in, and after this, the swing is performed again to make the next area of dredging. Such a swing-spud withdrawal-advancing or retreating dredger-spud driving-swing cycle is repeated to perform extensive dredging. The dredged object taken into the mud sampler S along with the swing is sucked under negative pressure on the ship by a negative pressure pump installed on the ship through a suction pipe connected to the mud sampler S.

The mud extractor S according to this embodiment is used by being suspended from the tip of a ladder R of such a dredger (not shown). The tip of the ladder R and the upper part Sa of the mud sampler S are joined via a mounting shaft J. The posture of the sampler S is kept constant by a posture control device (not shown) integrated with the hull.

The mud extractor S according to this embodiment is constructed by arranging back-to-back mud-collecting boxes 10 of substantially the same size and shape on both sides of the rudder R in the projecting direction Ra of the dredger.

That is, in this embodiment, each of the mud collecting boxes 10 is provided with an inlet 11 for a dredged object on one side and a suction port for sucking the dredged object taken in on the other side. It is configured to communicate with the pipe 20. And a pair of mud collection boxes 10 configured in this way,
10 so that the intake port 11 faces the opposite side of the intake port 11 in the other mud collection box 10.
The mud sampler S is configured by assembling the suction pipes 0 and 10 with the other side where the suction pipe 20 is provided facing each other. As a result, in the mud sampler S according to this embodiment, of the pair of mud collecting boxes 10 and 10 in the mud generator S moved by the swing of the dredger, the mud collector S is taken into the moving destination side by this swing. In the collection box 10 on the side to which the mouth 11 is directed, the intake 11
The dredged object can be continuously taken in from. That is, in the mud sampler S according to this embodiment, the dredging box 10 for taking in the dredging object is switched according to the change of the swing direction, and the dredging of the dredging object is performed.

More specifically, the pair of mud collection boxes 10,
10 each has a substantially rectangular oblong inlet 11 for the dredging object that is long in the direction Ra in which the ladder R projects, and a suction pipe is provided at an upper part of the mud collecting box 10 on an inner back side 12 opposite to the inlet 11. 20.

Further, the mud collecting box 10 is moved from the intake port 11 side to the inner back side 1 in a mud collecting chamber 10 ″ described later.
The left and right inner wall surfaces 13, 13 are inclined so as to gradually narrow the interval between the opposed left and right inner wall surfaces 13, 13 toward 2.

Further, the mud collecting box 10 has a configuration in which the intake port 11 side is vertically larger than the inner back side 12. That is, in this embodiment, the mud collecting box 10 has a relatively large mud collecting space 10 'on the intake port 11 side and a relatively large mud collecting space 10' on the inner back side 12. It has a narrow collection chamber 10 ".

The mud collecting space 10 'is configured to be open at the front side and the bottom side of the mud collector S,
The bottom side is configured to communicate with the mud collection chamber 10 ".

On the other hand, the mud collecting chamber 10 ″ has a substantially rectangular shape that is smaller than the intake port 11 and has a substantially rectangular shape.
A communication port 16 is provided on the bottom side of the mud collecting space 10 '. Further, the inner wall surface 14 on the bottom side and the inner wall surface 15 on the upper side of the mud collection box 10 are connected to the communication port 16, that is, the intake pipe 20 from the intake port 11 side in the mud collection chamber 10 ″. It is configured so as to be gradually inclined upward toward the communication side to the vehicle.

The sludge collection chamber 1 thus inclined
A communication opening 17 to the suction pipe 20 is formed at the innermost wall 15 on the upper side constituting the 0 "on the innermost side of the mud-collecting box 10, and following the communication opening 17, it extends vertically. The suction pipe 20 is attached to the mud collecting box 10.

In the embodiment, the left and right inner wall surfaces 13 and 13 and the bottom inner wall surface 14 of the mud collecting chamber 10 "are inclined as described above so as to respectively extend along the inner wall surface 14. A first water discharging means 30 for jetting water toward each of the wall surfaces 13 and 14 is provided.

That is, in the present embodiment, a plurality of lateral sides are formed on the bottom side of the mud collecting space 10 'along the lower opening edge of the communication port 16 to the mud collecting chamber 10 ". Are provided and the communication port 1 is provided.
6 along the left and right opening edges, a plurality of vertical water outlets 32, 3 on the left and right inner wall surfaces 13, 13 in the mud collecting chamber 10 ".
2 ... are provided.

The lateral water outlet 31 is constructed by attaching a plurality of tubular nozzles 31 ', 31' to the water supply passage 31a arranged along the communication port 16 at intervals. I have. Also, each nozzle 31 ',
31 ′ are assembled to the water supply passage 31a at different angles so that the directions of water spouting are all directed to the innermost part of the mud collecting box 10. (FIG. 4)

More specifically, in this embodiment, the water supply passage 31a has a half-cut pipe-like body 31b having a semicircular cross section, and both ends extending in the longitudinal direction thereof are placed on the bottom side. The plurality of nozzles 31 ′, 31 ′,... Are each attached to one end of this half-pipe body 31 b in a water-tight manner while being attached to a substrate 31 c attached to a certain inner wall surface 14 in a water-tight manner. The nozzle 31 'is inserted into and fixed to the cylindrical body 31d into which the one end of the nozzle 31' can be inserted from the other end of the protruding end, and assembled to the water supply passage 31a as described above.

The vertical water outlet 32 is constituted by four nozzles 32 ', 32', ... provided at intervals on the left and right inner wall surfaces 13, 13 along the communication port 16. is there. Each of the nozzles 32 ′, 32 ′,... Is arranged so that the direction in which water is blown out follows the inclination of the inner wall surfaces 14, 15 on the bottom side and the upper side of the mud collecting chamber 10 ″ (FIG. 6).

More specifically, in this embodiment, four insertion holes 13b, 13b,... Provided through the side plates 13a are formed outside the side plates 13a forming the left and right inner wall surfaces 13, 13. Branch pipes 32 to be inserted respectively
b, the water pipe 32a is assembled, and the tip of the branch pipe 32b inserted into the insertion hole 13b is closed into the branch pipe 32b from the end thereof.
And, insert the end on the non-blocking side of a tubular nozzle 32 ′ having a vertical water outlet 32 for blowing water to the side,
Assembled in a watertight manner, as described above, four nozzles 32 ',
32 'are provided.

Also, in this embodiment, the bottom 1 is located just below the suction pipe 20 in the mud collecting chamber 10 ".
8 and the inside of the suction pipe 20, the inner wall surface 2 of the suction pipe 20
The second water discharging means 40 which jets water toward the transfer destination side 20 ′ of the object to be dredged by the suction pipe 20 so as to follow 1.
Is provided.

That is, in this embodiment, the bottom 18 of the mud collecting chamber 10 ″ immediately below the suction pipe 20 is
A plurality of bottom water outlets 41 are provided so as to blow water into the suction pipe 20, and a plurality of water outlets 42 inside the suction pipe 20 so as to blow water upward from the suction pipe 20. Is provided.

The bottom water outlet 41 is located in a virtual arc shape having a center nozzle 41 ′ provided directly below the pipe axis of the suction pipe 20 in the bottom portion 18, and the center nozzle 41 ′ as a center. Are arranged at substantially equal intervals from each other as described above.

More specifically, in this embodiment, five insertion holes 18b, 18 provided in the bottom plate 18a are provided outside the bottom plate 18a constituting the bottom portion 18.
b... are provided with nozzles 41 ′ and 41 ″ inserted from outside the bottom plate 18 a in a watertight manner.
A water pipe 41a having b is assembled. (FIGS. 8 and 9)

The water discharge port 42 in the pipe is connected to the cylindrical portion 22 communicating with the mud collecting chamber 10 ″ constituting the suction pipe 20.
A connection portion with a connection tube portion 23, which is connected to an upper end portion of the communication tube portion 22 in a water-tight manner, and further has a pipe body (not shown) directed upward to the water at an upper end portion thereof. , A plurality of nozzles 42 ′, 42 ′,... Arranged in a circular shape so as to blow water toward the upper end side of the connection cylinder 23 and along the inner wall surface 21 of the connection cylinder 23.
It is constituted by.

More specifically, in this embodiment, an outwardly facing flange 23 is
a, and an outward flange 22a is provided at an upper end opening edge of the communication tube portion 22, and the connection tube portion 23 and the communication tube portion 22 are connected to the flanges 22a,
It is configured to be watertightly assembled with a ring body 42a having a hole communicating with both cylindrical portions 22 and 23 interposed between 3a. The ring body 42a sandwiched in this manner
Is configured so that the inner diameter is smaller than the diameter of the lower end side of the connection tube portion 23, and in the sandwiching state, the inner portion of the ring body 42 a extends inward from the inner wall surface 21 of the connection tube portion 23. It is configured to protrude. And
In this embodiment, the upper surface portion 4 of the projecting portion 42b of the ring body 42a projecting inward is used.
At 2c, mounting holes 42d, 42d,... Of a plurality of nozzles 42 'are provided in a circular shape at substantially equal intervals. Inside the ring body 42a, the annular water passages 4 communicated with the plurality of mounting holes 42d, 42d, respectively.
2e is formed, and the ring body 42a is provided with a water supply port 42f opened at the outer end face of the ring body 42a and communicated with the water supply passage 42e. An appropriate water supply pipe (not shown) is attached to the water supply port 42f in a communicating state.
In this embodiment, the mounting holes 4
2d, a tubular nozzle 42 'provided with an in-pipe water outlet 42 for spouting water at the upper end is inserted and attached at the lower end thereof in a watertight manner, and the suction pipe 2
A plurality of nozzles 42 ', 42',...

In this embodiment, the connecting tube portion 23 has a structure in which the inner wall surface 21 is inclined such that the inner diameter of the tube gradually decreases from the lower end to the upper end. The water spouted from the in-pipe water discharge port 42 flows along the slope of the inner wall surface 21 above the suction pipe 20, that is, the transfer destination side 2 of the dredged object in the suction pipe 20.
Flows towards 0 '.

Since the mud extractor S according to this embodiment is provided with the above-described structure, the water is spouted from the water outlets 31, 32, 41, and 42 by an appropriate water supply means. By pumping water into the water supply passages 31a, 42e communicating with the water outlets 31, 32, 41, 42 to the water supply pipes 32a, 41a, the inner wall surface 14 on the bottom side and the left and right Water can flow out along the inner wall surfaces 13, 13 toward the communication side with the suction pipe 20, and the transfer destination side 20 ′ of the object to be dredged along the inner wall surface 21 of the suction pipe 20. , And the dredged object taken in from the intake port 11 can be smoothly transferred by the water thus poured out.

Reference numeral 50 in the drawing denotes a frame having a shaft J attached to the tip of the ladder R at the top.

In the drawing, reference numeral 60 denotes a height covering the intake port 11 in front of the movement of the mud sampler S when the dredger S is taken in by the swing. This is a mud plate for forming the slope of the object to be dredged.

In addition, what is indicated by reference numeral 70 in the drawing is that the dredged object to be taken is crushed in a chopped shape and agitated, so that it can be easily taken in from the mud collecting space 10 ′ toward the mud collecting chamber 10 ″. Cutter means.

In this embodiment, the cutter means 70 has a length extending in the length direction of the intake port 11, and has a cutter shaft 72 whose rotation axis is directed in this length direction. A vertically extending arm 74 rotatably supporting both ends of the cutter shaft 72, a transmission shaft 75 a assembled to one upper end of one of the arms 74 and incorporated into one of the arms 74; And a motor 75 for rotating the cutter shaft 72 through a gear box 75b. More specifically, the transmission shaft 75a
Denotes a motor 7 via a coupling (not shown).
5 and the gearbox 75b
A bevel gear 75c is provided at an inner end thereof, and the bevel gear 75c meshes with a gear 75d provided at an end of the cutter shaft 72 in the gear box 75b, so that the cutter shaft 72 is rotated.

A connecting shaft 76 substantially parallel to the cutter shaft 72 is provided between upper ends of the pair of arms 74.
Is assembled in a bridge.

The connecting shaft 76 is provided with a plate-like lever body 77 having one end attached to the arm 74 so as to project in a direction substantially perpendicular to the direction in which the arm 74 projects. Body 77 is mud plate 6
The other end protrudes to the back side through the hole provided at 0, and
An intermediate portion is rotatably supported by a shaft portion 78 provided on the mud collecting plate 60, and can be moved up and down around the shaft support position 77a.

On the other end of the lever body 77, the tip of a rod 81 connected to the plunger of the actuator 80 is pivotally supported. In this embodiment, the push-out of the rod 81 causes the lever body 77 to move up and down around the pivotal support position 77a. Space 1
It can be moved inward or outward of 0 '.

The cutter shaft 72 is provided with a plurality of cutter blades 73, 73,... Projecting radially from the outer surface of the cutter shaft 72 so as to circumscribe the axis along the axial direction of the cutter shaft 72. That is, a cutter portion 71 is formed, which is arranged and assembled in a spiral shape, and crushes and agitates the dredged object to be taken in by rotating the cutter shaft 72.

Further, in this embodiment, the third water discharging means 90 for jetting water toward the cutter 71 of the cutter 70 having such a structure is located immediately above the cutter 71. It is provided on the upper part of the mud collecting plate 60.

In this embodiment, the third water discharging means 90 is provided with a plurality of water discharging ports 91, 91,... Disposed along the rotation axis direction of the cutter shaft 72. .

Each of the water outlets 91 is connected to a water supply pipe 92 provided on the back side of the mud plate 60, and the branch opposite to the communication side is inserted into a hole 93 provided in the mud plate 60 and assembled. A tubular nozzle 9 fitted to the tip of a tube 92a
1 '. More specifically, such a nozzle 91 ′
Is closed at the end opposite to the side fitted to the branch pipe 92a, and has the water discharge port 91 directed to the cutter 71 side at the side part, whereby the water supply pipe 92 The water to be sent is spouted toward the cutter unit 71. In the figure, reference numeral 94 denotes a fixing plate of the water supply pipe 92, and reference numeral 95 denotes a fixing plate of the water supply pipe 92.
It is the bolt which stops.

As a result, according to the mud sampler according to this embodiment, the dredged object taken in from the intake port 11 is supplied from the cutter 71 of the cutter means 70 and the third water discharging means 90 to the cutter 71. So that the water content of the dredged object added with the water spouted with the agitation of the cutter means 70 can be easily sent to the mud collection chamber 10 ″. Can be uniformly increased.

[0060]

According to the mud sampling apparatus of the present invention, the water content of the dredged object taken into the mud collecting box is low, so that the fluidity of the dredged object is low, and Even in the case where the viscosity is high, the suction pipe is provided in a state where the object to be dredged is prevented from adhering to the inner wall surface by the water jetted from the first water discharging means along the inner wall surface of the mud collecting box. The dredged object can be smoothly transferred toward the side where the suction pipe is connected.

The dredged water is discharged from the second water discharging means along the inner wall surface of the suction pipe so that the dredged object does not adhere to the inner wall surface. The dredged object transferred to the pipe can be smoothly transferred toward the transfer destination side of the dredged object by the suction pipe.

The water spouted from the first water discharging means and the second water discharging means increases the moisture content of the dredged object taken in, thereby increasing the fluidity of the dredged object with the transfer. And the transfer can be made smoother.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of a mud sampler S.

FIG. 2 is a longitudinal sectional view of a main part of the mud sampler S.

FIG. 3 is a configuration diagram of a mud sampler S (a cutter means 70 and a third water discharging means 90 are omitted).

FIG. 4 is a cross-sectional view of an essential part of the sampler S;

FIG. 5 is a configuration diagram of a lateral water outlet 31 part.

FIG. 6 is a configuration diagram of a vertical water discharge port 32 part.

FIG. 7 is a configuration diagram of a vertical water outlet 32 seen from a different direction from FIG. 6;

FIG. 8 is a configuration diagram of a bottom water outlet 41 part.

FIG. 9 is a configuration diagram of a bottom water outlet 41 part.

FIG. 10 is a plan view of a ring body 42a.

FIG. 11 is a configuration diagram of a sampler S.

FIG. 12 is a configuration diagram of a water discharge port 91 constituting a third water discharge means 90;

[Explanation of symbols]

 S mud collector 10 mud collecting box 11 intake port 20 suction pipe 30 first water discharging means 40 second water discharging means

Claims (5)

[Claims] 1. A collection device provided on one side with an inlet for a dredged object such as mud, sand, or soil to be dredged, and connected to a suction pipe for suctioning the dredged object on the other side. A first water discharging means having a mud box, and jetting water along the inner wall surface of the mud collecting box from the intake side to the communication side of the suction pipe in the mud collecting box; A second water discharging means for discharging water along the inner wall surface of the suction pipe toward a transfer destination side of the object to be dredged by the pipe. 2. A suction pipe is communicated with an upper part of the mud collector box on the inner side of the mud collector box, and a second water discharging means is provided at a bottom of the mud collector box immediately below the suction pipe. It has a spout for spouting water toward the inside of the suction pipe, and a spout for spouting water in the transfer direction of the object to be dredged by the suction pipe in the suction pipe. The mud extractor according to claim 1. 3. A sludge collecting box inclines the left and right inner wall surfaces so as to gradually narrow the interval between the pair of opposed left and right inner wall surfaces from the intake side of the object to be dredged to the communication side to the suction pipe. The mud collector according to claim 1 or 2, wherein the first water discharging means has a water discharging port for discharging water along the left and right inner wall surfaces. 4. A configuration in which the mud collecting box is inclined so that at least a part of the inner wall surface on the bottom side is gradually raised upward from the intake side of the dredged object to the communication side to the suction pipe. 4. The method according to claim 1, wherein the first water discharging means has a water discharging port for discharging water along the inner wall surface on the bottom side. Mud. 5. A cutter unit having a cutter unit for crushing and stirring the dredged object to be taken in on the inlet side of the dredged object in the mud collector box, and facing the cutter unit of the cutter unit. Claim 1 characterized by having a third water spouting means for spouting water.
The mud extractor according to claim 2, 3 or 4.