JPS604331B2 - Suction device for sludge dredging - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sludge pump suction device for sludge desert, which has a sludge suction port combined with a hawk layer and a water injection device.

Recently, sludge pollution has become a problem, but if the sludge that has settled in the sludge tank floats in the water again, it can cause secondary pollution, so how can we efficiently remove sludge without contaminating the water quality? It has become a matter of vague importance. The pump-back method, which has been used since then, generally targets sand grains, foundations, or silt, and pumps the sand grains together with water into a conveying duct, and then closes the suction port. The ship moved forward while swinging, and the ship moved forward.

The target sand grains have a large particle size and a relatively high specific gravity, so even if the suction port was swung, only local contamination occurred and the sedimentation was smooth.

However, when it becomes like organic sludge like sludge,
Once the particles are disturbed and suspended due to their small size and specific gravity,
It is obvious that it takes a long time for the precipitation to return to its original state. In response to this, some proposals have been made, such as a method in which the sludge is forcibly drawn into the suction device by being towed by a work boat, etc., and is disturbed within the device so that it can be transported by pump. When deposited on the seabed, it has a certain degree of hardness, and when an attempt is made to forcibly take it into the suction device, the sediment layer collapses at the tip and is sucked into the device. Before water pollution begins. What is more decisive is that the driving part of the Takaazusa device is exposed on the side of the main body, so when the towing part moves through the sludge layer,
The disadvantage is that water pollution is severe. The suction device for sludge removal of the present invention minimizes the above-mentioned water pollution, and also enables effective sludge removal by simply attaching it to the conveyance duct of the conventional pump system. It is related to the device.

That is, in the device according to the present invention, the top surface of the suction port is made longer than the bottom surface so as to cover the top of the rope azusa device, and the vertical layer is arranged in front of the suction port to prevent sludge. I try to stir it in.

Furthermore, a water injection device is installed at the rear surface of the clearing layer and at the bend, and in the event that the duct becomes clogged, water is ejected to break up the sludge, making it easier to remove the sludge, and preventing the sludge from being transported. It has the role of supplying water when hydration is required. Hereinafter, details of the present invention will be explained using the drawings.

Figures 1 to 4 all show an embodiment based on the sludge suction device of the present invention, where Figure 1 is a plan view and Figure 2 shows the arrow direction 0 to 0 in Figure 1. FIG. 3 is a side sectional view, FIG. 3 is a front view, and FIG. 4 shows the hawk wing and the hawk wing rotation axis, respectively. In the above figures, 1 is the suction box, 2 is the suction port, 3 is the Azusa blade drive device, 4 is the front water jet branch pipe, 5 is the sludge suction pipe, 6 is the jet water water pipe, 7
8 is the fly Azusa wing, 8 is the fly Azusa wing rotation axis, 9 is the water injection nozzle, 10
11 indicates the sludge layer before the retreat, 11 indicates the sludge layer or silt layer remaining after the retreat, 7' indicates the fixed wing, and 8' indicates the support shaft of the fixed wing. As shown in FIGS. 1 and 2, the sludge suction device 1 is suspended from the Ryohencho ship, brought close to the sludge layer on the seabed, and the suction port is connected to the device via the conveyance duct 12. death? The pump installed on the barley ship is started and suction begins.

When the device reaches a predetermined thickness of the sludge layer, the sludge blade drive device 3 starts towing the sludge in the horizontal direction while rotating the sludge blades 7 in the direction in which the sludge is taken into the device. At this time, as shown in the cross-sectional view of FIG. 2, the Azusa wing rotating shaft 8 connected to the rope drive device 3 rotates, and furthermore, the horizontal plane of the suction port 2 where the Wings 7 is installed rotates. As a result of this rotation, the sludge layer 10 is broken down and fragmented, and is mixed with the seawater sucked in from above the suction port 2, increasing the water content of the sludge until it can be sucked in by a pump, and efficiently draining the sludge. Able to perform deep work. The thickness and water content of the sludge layer that sinks to the seabed is not necessarily uniform and varies from place to place. If the amount of sludge stirred by the Azusa blade 7 increases, or if sludge with a low water content is taken in, the water content of the sludge will not reach a level that allows it to be sucked in by the pump, making it impossible to suck it up sufficiently. can be assumed.

Furthermore, the entire suction port of the suction device may be buried in the sludge layer, resulting in a blockage phenomenon. In such a case, pressurized water is sent through the jet water supply pipe 6 and water is jetted from the water jet nozzle 9 to cut off the sludge and maintain an appropriate water content ratio to continue the masterful work. Generally, it is effective to make the suction port of the sludge suction part larger in the middle direction with respect to the height direction, because the sludge layer is not so thick, to increase efficiency, and to prevent secondary pollution. A ratio of 1 to 3 or more is possible, and in such a case, one light layer is insufficient, so multiple devices must be used.

Therefore, it is effective to combine working blades and stationary blades as shown in FIG. In other words, it is necessary to cut off the sludge and improve its mixing with seawater, so the key is to give as much energy to the sludge through the rope azusa blades.
This means increasing the number of drive blades, which makes the mechanism more complicated and increases the individual driving force, but if you mix stator blades and rotor blades, the number of rotating parts decreases.
The mechanism can be simplified.

Next, it is an essential requirement to minimize secondary pollution caused by flycatchers, but if the Kenazusa wing 7 is of a horizontal type, the Hawkazusa wing drive device 3 will inevitably be placed outside the suction port 2 due to the layout. This is undesirable because it disturbs the sludge in the unfinished areas.

The sludge desert suction device of the present invention has a vertical shape, and the sludge blade drive device 3 is disposed above the suction port 2. .
That is, since the hawk wing drive device 3 moves in seawater in any case, it does not pollute the seawater with sludge.
As detailed above, the suction device for sludge and soot of the present invention,
[1] In a suction device for removing sludge using a pump, there is a suction port that closes on one side and sucks external sludge into the inside in order to suck in the sludge and send it to the conveyance duct. It consists of a suction unit box body which is equipped with a sludge suction pipe connected to the conveying duct on a side surface or top surface other than the side where the sludge is formed, and a plurality of stages that rotate to draw the sludge and water sucked into the suction port. Above the fly azusa wing and suction mouth,
A vertical thick western clothing layer comprising a rotary blade rotating shaft whose lower end is supported by the lower structural member and a rope azusa blade drive device disposed above the suction port, and at least one unit is provided at the suction port. , a water injection nozzle disposed inside the suction box to spray water onto the Seiyo Soma rotating part;
The water injection nozzle described in item (1) above further includes a water injection nozzle disposed inside the suction box to transfer the sludge collected at the suction port in the direction of the conveyance duct inside the suction box. [3] In the rope azure device according to claim 1 above, the fixed blade is disposed at the suction port in parallel with the rotational surface of the rope azure blade close to the rope support. This feature makes it possible to continuously and efficiently remove sludge deposited on the seabed, etc., and to extremely reduce secondary pollution of seawater, making a great contribution to the industry.

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[Brief explanation of drawings]

Figure 1 is a plan view of the suction device for soot after sludge of the present invention, Figure 2
The figures are a sectional side view taken from 0 to 0 in FIG. 1, FIG. 3 is a front view taken from m to m in FIG. DESCRIPTION OF SYMBOLS 1... Suction part box body, 2... Suction port, 3... Rope Azusa wing drive device, 4... Front water jet branch pipe, 5...
・Sludge suction pipe, 6...Jet water supply pipe, 7...
Hawk Azusa wing, 8... Fly Azusa wing rotation axis, 9... Water injection nozzle, 10... Back Han front sludge layer, 11... Remaining deep back sludge layer, 12... Conveyance duct, 7'.・Fixed wing, 8'・
・Fixed wing support ball. 2 figures, 3 figures, 4 figures

Claims (1)

[Scope of Claims] 1. A suction device for dredging sludge using a pump, including a suction port that is opened on one side to suck dredged sludge and send it into a conveyance duct, and that sucks external sludge into the suction port. a suction unit box body having a sludge suction pipe connected to the conveying duct on a side surface or top surface other than the side surface where the sludge is formed; and a stirring blade consisting of multiple stages that rotates to stir the sludge sucked into the suction port. Above the suction port. On top of the lower structural material. A vertical stirring device consisting of a stirring blade rotating shaft whose lower end is supported and a stirring blade driving device disposed above the suction port, and at least one vertical stirring device provided at the suction port, and a rotating part of the stirring device that injects water. A suction device for dredging sludge, comprising: a water injection nozzle disposed inside a suction box. 2. The water injection nozzle according to claim 1 above further includes a water injection nozzle disposed inside the suction box body to transfer the sludge stirred at the suction port in the direction of the conveyance duct inside the suction box body. A suction device for sludge dredging. 3. A suction device for dredging sludge according to claim 1, characterized in that fixed blades are disposed at the suction port in parallel with the rotating surface of the stirring blades and close to the rotary blades.