JPH0721202B2 - Inhalation head for sludge treatment equipment - Google Patents

Description

The present invention relates to a suction head in a sludge treatment device for treating sludge accumulated in a harbor, a river, a lake or the like.

[Conventional technology]

Conventionally, various methods have been adopted as a method for treating sludge accumulated in ports, rivers, lakes and marshes, commonly known as sludge. For example, a method of lowering a hose from a ship to suck sludge, or an underwater power shovel. There is a method that directly collects sludge.

[Problems to be Solved by the Invention]

However, in the above method of lowering the hose from the ship and sucking in the sludge, it is difficult to treat small solids in the sludge larger than the inner diameter of the hose, and if the small solids become clogged at the tip of the hose, work will be performed. There is a problem that it has to be interrupted.On the other hand, the method using an underwater power shovel is suitable for processing small solids in sludge, but for processing sludge in a fluid state mixed with water or seawater. It was inefficient and unsuitable.

Therefore, the problem to be solved by the present invention is that, for example, if it is installed on the suction side of a sand pump for sucking sludge, it can crush small solids in the sludge and homogenize the sludge. The present invention is to provide a suction head for a sludge treatment device capable of efficiently performing suction pumping of sludge.

[Means for Solving the Problems]

The present invention has been made for the purpose of solving the above problems, and its configuration is such that a casing-like case having an opening at the front and a suction pipe connected to the upper part is reversed from the central part. When the starting point of the ribbon type screw twisted in the direction is displaced by about 180 degrees in the central part, the starting point of the screw is inserted inside the other screw by an appropriate distance, and a screw auger for transportation and stirring is horizontally installed. It is characterized by consisting of.

[Action]

The suction head of the present invention is such that the winding directions of the ribbon type screws provided on the left and right of the screw auger are opposite to each other, and the winding start start points of the screws in the central portion are shifted from each other by about 180 degrees and the other one Since it is located on the inner side of the screw, it can be rotated and reciprocally moved laterally in the case to agitate and fluidize the sludge sufficiently evenly. The soil mass can be easily crushed and shredded, and the sludge can be homogenized with efficient stirring.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side sectional view of an example of the suction head of the present invention, and FIG. 2 is a front view of the same.

In the figure, 1 is a casing-like case in which a suction pipe 2 is continuously provided on the upper part, 3 is an opening for introducing sludge in the front of the case 1, in order to prevent inflow of a large solid matter into the sludge. A large number of lattices 4 are attached, and the suction pipe 2 has a suction hose 5 such as a sand pump connected to a tip end thereof by a connecting fitting 6.

7 is a screw auger, 8 is a left side ribbon type screw of the screw auger 7, 9 is a right side ribbon type screw, and 10 is a rotary shaft.

Thus, the left side ribbon type screw 8 and the right side ribbon type screw 9 are attached around the rotary shaft 10 via the arm member 11, and the arm member 11 holds the rotary shaft 10 at an appropriate interval to rotate the rotary shaft 10. It is attached to the shaft 10 so that a space 12 is formed.

Further, the winding directions of the left screw 8 and the right screw 9 are opposite to each other, and there are winding start start points of these screws 8 and 9 in the central portion of the screw auger 7, and these start points are centered on the rotary shaft 10. Are located at positions 180 degrees apart from each other, and are arranged so as to overlap each other for a distance h without coming into contact with each other in the central portion of the screw auger 7, and are installed on the case 1 by the bearings 13, 13. The oil motor 14 drives the screw auger 7.

The inhalation head of the present invention is configured as described above,
The opening 3 is designed to have a size suitable for the place of use, and the length of the screw auger 7 is also designed to correspond to the opening 3.

In the suction head of the present invention, the suction pipe 2 is connected to the tip of the suction hose 5 which is connected to a sand pump (not shown) installed on the ship or the like. Is suspended in seawater and placed on a bottom soil 17 such as a harbor, river or lake, and then the oil motor 14 is driven to rotate the screw auger 7 in the direction of arrow P while slidably opening the opening 3.
Move toward 15 in the direction of arrow Q.

Large particles in the sludge 15 are removed by the lattice 4 of the opening 3 during the movement, but the sludge 15 containing small solids and soil particles is taken into the suction head through the opening 3 and the screw auger 1 At the center, as shown by the arrow in Fig. 2, it collides with the left and right ribbon type screws 8 and 9 and is crushed. If the crushing is insufficient, the residual sludge 15 that was not sucked into the suction pipe, Left and right ribbon type screws with high carrying capacity 8,9
Depending on the pitch, the screws 8 and 9 and the case body 1
Through a space 12 formed between the rotary shaft 4 and the gap between the ribbon type screws 8 and 9 or the direction in which the screws 8 and 9 rotate.

The small solid matter and the lump of earth flowing in the opposite direction are broken down at the end points of the left and right ribbon type screws 8 and 9, that is, at both ends of the screw auger 7, and are carried to the central portion as shown by arrows. In this way, small solids and clods in sludge 15 are crushed and shredded by screw auger 7 and transported left and right in the suction head while being mixed and stirred with water or seawater 16 until pumping is possible. Be fluidized.

The fluidized sludge 15 is pumped through the suction pipe 2 and the suction hose 5 as shown by the arrow X in FIG.

Incidentally, a generally well-known snow plow and the like have a structure in which a screw type auger which is not a ribbon type is wound in mutually opposite directions from the central portion similarly to the suction head of the present invention. Ribbon type screw in the suction head 8,
The space 12 formed during rotation between the shaft 9 and the rotary shaft 10 is not formed by the snow auger screw auger, and therefore the stirring action as in the suction head of the present invention cannot be expected.

Although the specific use method of the suction head of the present invention is not shown, a method of suspending the position after carrying out position determination by a special turret device installed on the ship or an arm of an underwater power shovel having a floating body is used. There are methods such as mounting and using.

〔The invention's effect〕

The suction head of the present invention is as described above, and the two backward-direction ribbon type screws are shifted in their starting points by about 180 degrees, and since these parts are made to enter each other, they are taken in at the central part. The sludge can be sucked into the suction pipe and the suction hose without being sucked into the suction pipe and the suction hose as it is. The effect that the pulsation in the suction hose can be reduced can be obtained.

Therefore, according to the inhalation head of the present invention, the sludge that is in a fluid state from the beginning is taken in without distinction of sludge containing small solids and clods, the small solids and clods are easily crushed and shredded and extremely efficiently stirred, Riverbed, lakebed or seabed sludge can be delivered to the processor.

In addition, the width of the sludge intake, that is, the width of the opening can be made a structure having a sufficient width by using a screw auger having a long width, which is used in the conventional sludge treatment device. It is extremely economical because it can be easily attached to the tip of the suction hose for use.

Furthermore, the inhalation head of the present invention has a simple structure, and can be manufactured and provided easily and inexpensively.

[Brief description of drawings]

FIG. 1 is a side sectional view of an example of the suction head of the present invention, and FIG. 2 is a front view of the same. 1 ... Case, 2 ... Suction tube, 3 ... Opening part, 4 ... Lattice, 5
... Suction hose, 7 ... Screw auger, 8 ... Left screw, 9 ... Right screw, 10 ... Rotating shaft, 11 ... Arm member,
12 ... Space, 13 ... Bearing, 14 ... Oil motor

Claims (1)

[Claims] 1. A ribbon type screw, which is twisted in opposite directions from a central portion, is installed in a housing-like case having an opening on the front surface and a suction pipe connected to the upper portion, and the starting point at the central portion is about 180.
A suction head for a sludge treatment device, comprising a screw auger for transportation and agitation formed laterally so as to be displaced from each other and to have the start points appropriately inserted into the inside of the other screw.