JP6689503B2 - Lifting sand mud device using covered channel - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an apparatus for collecting or removing bottom sediments of dams, lakes, rivers, water tanks of industrial facilities, and the like.

It is necessary to collect and remove many kinds of underwater sediments such as sediments flowing into the dam due to heavy rain and debris flow, mud in lakes and marshes, collection and removal of sediments in rivers, mud in industrial facility tanks, etc. There are indeed many types of equipment provided for the removal of these precipitates.
The inventor of the present application also obtained the patent No. 3895505 which enables a wide range of lifted sand, and applied for the Japanese Patent Application No. 2015-116078, but this is not satisfactory, and this is improved.

Japanese Patent Laid-Open No. 2012-229528 JP2012-197580 JP-A-2003-138598

In a device for recovering and removing underwater sediment by a hydraulic transport method, a pipe at a position where the upstream end water intake port of the suction pipe is maintained at a height that does not cause it to be buried in the sediment and the sand is absorbed by sand embedded in the sediment downstream of the suction pipe. The bottom or the side wall of the pipe was provided with a sand collection pipe part having holes arranged in a line along the pipe line and a sand suction port opened in a slit shape, and a mud pipe was connected. the downstream end of the suction pipe, drop or siphon, power pumps, jet pumps, airlift pumps and communicatively connected to the pumping source, such as a vacuum apparatus, giving a flow rate required for the suction pipe, is Atsumarisunakan portion A device for recovering or removing a sediment in a buried state will be referred to as a " covering channel mud device" and described below.

Water inlet of the suction pipe upstream end of said to covering waterway Agedoro apparatus, the case of absorption of water as a vertical water channel in the form of upright, and referred to upper and lower directions waterways portion and the auxiliary water tube,該補water tube portion A sand suction port similar to the sand collecting pipe portion can be provided in the above.
Suction pipe upstream end of the case without the auxiliary water tube is directly in the form of extending the Atsumarisuna pipe section, or to water absorption by in an inclined upward direction protrudes above precipitate.

In the covered channel pumping mud device, it is difficult to keep the pumping concentration stable and high, and in order to inhale a wide range of sediment, the sand suction port is opened in the long area of the sand collecting pipe to inhale. If is, for the downstream end is most strongly sucked sucked in pumping source, peripheral precipitate of the downstream end吸砂port is sucked eliminated in preference, open towards the upper is the cone-shaped (hereinafter "smoke-breaking Symptoms are "to referred),吸砂from the upstream side吸砂opening of the inflow velocity of the opened suction Sunaguchi is below a predetermined speed said population sand tube there is a large problem that can not be.

In the present invention, as a means for overcoming the tear-through phenomenon, the problem is solved by delaying the tear-through phenomenon as much as possible and making it easier for the upstream side (supplementary water absorption tube side) sediment of the sand collecting pipe to be sucked and removed before the occurrence of the tear-through phenomenon. To do.

As means for delaying the suck-breaking phenomenon in the downstream side吸砂port opening height position of Atsumarisuna tube portion, and Hiraki窄the lower height position closer to the right under portion or said population sand tubesheet of said population sand pipe, upstream so that the high position near the center of said population sand tube on the side, stepped, or tilted to open in窄穴arranged in a line, the precipitate is sucked on the upstream side of said population sand tube easier, and, the suction precipitate is easy to be eliminated mixed-.

At the upstream end of the sand collecting pipe sand suction port of the covered channel mud pumping device, a tip sand suction port having a large opening in the lower half of the sand collecting pipe is opened to facilitate the inflow of external sediment.

In a sand collecting pipe equipped with a slit-shaped sand suction port, since the sand collecting pipe is divided into upper and lower parts due to the opening of the slit-shaped sand suction port, it is necessary to hold and reinforce the upper and lower sand collecting pipes. And a connecting rib provided outside the sand collecting pipe in a form of connecting the upper and lower sides of the sand collecting pipe, or a peripheral part that abuts against the sand sucking port of a bearing or the like, is widely penetrated outward and upward to form a through void portion. And the inflowing water outside the sand collecting pipe that has passed through the through gap flows into the sand sucking port in a state of scouring the sediment outside the sand collecting pipe at a position beyond the rib or the support. In this way, the smooth sand absorption action is continued.

In addition, the connecting ribs in the preceding paragraph and the through voids that open into the bearing etc. open into the sand collecting pipe. If the sand suction holes are round holes arranged, connecting ribs that hold and reinforce the upper and lower sides are not required, When a support is required for the sand collecting pipe, it is effective for the continuity of the sand absorbing action.

In the present invention as described above,吸砂capacity adjustment by opening height position of Atsumarisuna tube吸砂port, improvement of collecting sand pipe upstream of吸砂ability by one step size rather open tip吸砂port or the like, in addition Te, connecting ribs, by successive reduction of the supporting Uketamawabutsu rib portion of the front and rear吸砂, stretched practical collection sand distance of this kind Agesuna Agedoro device, improvement of inspired concentration, could stabilize.

It is a trihedral view of 1st Example, (a) Front view, (b) Plan view, (c) Side view. 1 is a sectional view taken along the line A in FIG. 1, and FIG. 1 is a cross-sectional view of the C portion of FIG. 1, (g) is a cross-sectional view of the D portion, and (h) is a cross-sectional view of the E portion. The front view of 2nd Example is shown. In the figure, (i) is a side view taken along the line AA of FIG. 4, and (v) is a cross-sectional view taken along the line BB. 4 is a sectional view of the C portion of FIG. 4, (wo) is a sectional view of the D portion, and (wa) is a sectional view of the E portion. The front view of 3rd Example is shown. 7 is a side view taken along the line AA of FIG. 7, and FIG. 7A is a sectional view taken along the line CC in FIG. 7, and FIG. 7B is a sectional view taken along the line D-D.

Hereinafter, the embodiments of the present invention will be described with reference to FIGS. 1-9.

The first embodiment of the present invention is a covered channel mud pumping apparatus as shown in FIG. 1 which is a three-sided view and shows sectional views of the sand collecting pipe 1A and the supplementary water absorption cylinder 2A as shown in FIGS. 2 and 3. installed in the sea bed which object occurs, which is used by connecting the flange portion of Okudorokan 3A to pumping source, a portion of Atsumarisunakan 1 a, or all of filled, complement water cylinder 2A water inlet 5 to the water flow operated with some water on the precipitate, apparatus der recovering removing peripheral precipitate is, the upper end of Okudoro pipe 3A from the upstream end auxiliary water inlet 5 of the auxiliary water tube 2A, It is composed of a suction pipe 1 reaching a connection flange to a pumping source.

At a portion of the sand collecting pipe 1A close to the mud feeding pipe 3A, there is a sand suction port 6 which is opened in the pipe line direction immediately below the sand collecting pipe 1A as shown in FIG. In the section B shown in the figure, in consideration of the angle of repose of the handled sediment, the sand suction ports 6 are opened on both sides of the height position where the external sediment is unlikely to collapse naturally when the device is stopped. In the section C shown in (3) of FIG. 3, the sand feeding port 6 is opened at a height position where the external precipitate naturally collapses in the sand collecting pipe 1A when the apparatus is stopped.

In order to allow the sediment to flow into the sand collecting pipe 1A when the sand collecting pipe 1A is in the buried water-flowing operation, the sand suction port 6 is located immediately below (2) in the section A in FIG. It is necessary that the permeated water from the above floats the sediment particles to flow in and flow in. (E) At the position B in the cross section of the figure, although the sediment cannot collapse naturally, the permeated water or the inflow water velocity If the speed is such that an object can be moved laterally, it flows into the sand collecting pipe 1A .

  (E) In the section C of the figure, the sediment naturally slides down into the sand collecting pipe 1A, and the deposit accumulated in the pipe is high in the suction position, and the length of the repose angle ridge line in the pipe is high. Is long, the mixed flow area with the flowing water is wide, and mixing and removal are easy.

The auxiliary water-absorbing cylinder 2A is provided with a longitudinal sand suction port 7 along the pipe direction, and a partition plate 4A is provided in the auxiliary water-absorbing cylinder 2A as shown in the cross section of FIG. It is divided into a non-sand inlet side flowing water channel d and a sand inlet side flowing water channel e, and they are merged and mixed at a lower end at part f shown in FIG.

  On the lower side of the sand collecting tube 1A at the position of the portion f, a tip sand suction port 10 that is opened one step larger is opened to facilitate the inflow of external sediment.

Further, between the sand suction ports 7 and the upper edges of the sand suction ports 6, a water intake canopy 8 is inclined toward the outside of the eaves as shown in FIG. It is arranged so as to form an empty eave gap a, and the suction of precipitates from the sand suction port 7 to the sand suction port 6 is connected.

The sand collecting pipe 1A is in a state of being divided into upper and lower parts by a slit-shaped sand suction port 6 in a portion shown in the cross-sections (e) and (f) in FIG. By making the portion of the connecting rib 9 for holding the space 6 contacting the sand sucking port 6 open outward and upward to form a gap b, the connecting rib 9 before and after the connecting rib 9 is formed. At the time of sand absorption, the external inflow water that has passed through the void portion b is scourd or swept out of the external sediment at the position beyond the connecting ribs 9 so as to flow into the sand intake port 6 to connect the sand. Precipitate suction before and after the rib 9 is smoothly continued .

The partition plate 4A, the sand suction port 7, the water guiding canopy 8, the connecting ribs 9, and the sand suction port 10 in the first embodiment are provided respectively as necessary, and some are not provided.
Further, the sand inlets 6 shown in the section (e) B and the section (e) C of the sand collecting tube 1A are not provided on both sides of the sand collecting tube 6 as shown in the figure, but only on one side. That is, the height of the section A or the section B can be unified, and the sand suction port can be inclined as a whole.

In the second embodiment, as shown in FIGS. 4, 5 and 6, a mud pipe 3B extending coaxially with the sand collecting pipe 1B is provided at the downstream end of the semicircular sand collecting pipe 1B having an inverted U-shaped cross section. It is a covered channel mud device composed of a suction pipe 1 which is connected and connected and a supplementary water absorption cylinder 2B is vertically connected at an upstream end, and a slit-shaped sand absorption port 6 is provided on a side wall of the sand collection pipe 1B to obtain the supplementary water absorption. The inside of the cylinder 2B is divided into water channels by partitioning with a flat partition plate 4B in the water channel direction.

Between the sand suction port 7 of the supplementary water suction cylinder 2B and the upper side of the sand suction port 6 of the sand collecting pipe 1B, a flat water guiding cane 8 is provided so as to project outward so that the water guiding canopy 8 is buried at the time of burial by sediment. To facilitate the formation of water channels below.

In order to maintain the upper and lower holding bearings of the sand collecting tube 1B divided by the slit-shaped sand suction port 6 and the space between the sand suction ports 6, as shown in each cross section of FIG. A space c is provided at the position of the sand suction port 6, and a space h is provided below the water hood 8 of the leg rib 15.

The sand suction port 6 has the same height in the entire length range of the sand suction pipe 1B as shown in the drawing, or the stirrup of the auxiliary suction pipe 2B side is made higher and the mud pipe 3B side is made lower stepwise. , It can be an inclined sand intake.
Further, the sand suction port 6 can be provided only on one side of the sand collecting tube 1B.

In Example 3, as shown in the front view of FIG. 7, and the side view and the cross-sectional view of the main part in FIGS. 8 and 9, a rectangular collection of rectangular shapes with a slit-shaped sand suction port 6 opened in the center of the upper side. a waterway Agedoro device covering which have configured the suction pipe 1 with sand tube 1C.

In the case of the present embodiment, since the sand suction port 6 is located on the upper surface of the sand collecting pipe 1C, the water guiding eaves 8 between the sand suction port 7 of the supplementary water suction tube 2C and the sand suction port 6 of the sand collecting pipe 1C has an external hand mirror shape. The grip part of the flat plate is located above the upstream end of the sand inlet 6, and is attached to the lower side of the upper auxiliary water absorbing cylinder 2C with a gap between the upper surface of the sand collecting tube 1C and the round iron on the lower side of the outer periphery of the water canopy 8. A water channel at the time of burial is formed by arranging and denting the inner circumference of the lower side upward.

The吸砂port 6 directly above portion of the bearing rib 16 for reinforcing the upper side member of Atsumarisunakan 1C, reinforced by providing a gap i made larger Hiraki窄upward as shown in FIG. 8 (Yo) FIG.

The invention and sedimentation sentinel Haisuna in dam, power generation, irrigation, water collected Mizuguchi collection and removal of sediment, such as water supply, removal sand removal mud rainwater and drainage industrial plants and various facilities, sewage and water treatment It facilitates the collection and removal of sediments from the equipment, does not require a stirring mechanism, and can contribute to an environment-friendly energy-saving sludge equipment that does not cloud surrounding water.

1 suction pipe (from supplementary suction port 5 to the downstream end of any of the mud pipes 3A, 3B, 3C)
1A, 1B, 1C, sand collecting pipe 2 for each device Supplementary water absorption cylinder (when referring to the whole)
2A, 2B, 2C, supplementary water absorption tubes 3A, 3B, 3C of each device, mud pipes 4A, 4B, 4C of each device, partition plate 5 of each device Complementary water absorption port 6 Sand absorption port 7 of sand collecting pipe 7 Complementary water absorption Cylinder sand suction port 8 Water guide eaves 9 Connecting rib 10 Tip sand suction port 12 Leg 13 Rib 14 Rib 15 Rib 16 Bearing rib 17 Round iron 21 Reinforcing material 22 Reinforcing material a Retaining material a Water guiding path under the eaves 8 B Connecting rib 9 Gap in the sand inlet 6 part G Space in the sand inlet 6 part of the leg ribs 13 and 14 d Non-sand inlet side running water channel e of the supplementary water absorbing cylinder 2 Sand intake side flowing water channel f of the supplementary water absorbing cylinder 2 Sand collecting pipe 1 Confluence point of the auxiliary suction cylinder 2 and the gap between the water intake canopy 8 of the leg rib 15 i The sand suction port 6 upper side gap of the support rib 16 The gap just below the sand collecting pipe of the leg 12

Claims (3)

The upstream end water intake of the suction pipe is maintained at a height that does not allow it to be buried in the sediment, and a line-like opening is formed along the bottom or side wall of the suction pipe at a midway position where the water is buried in the sediment. the arrayed pores and Sri Tsu preparative shaped吸砂port with a collecting sand tube section by a predetermined interval opened, through connection connecting the downstream end of the suction pipe in pumping source, a device for recovering or removing water sediment in, the suction sand inlet was Hiraki窄arranged in said population sand pipe section, ribs and bearing the intake sand outlet vertically to be forms which are divided, the portion rib reinforcement in contact with the absorbing sand outlet, an outer A dredging device in which a greatly opened void is provided on the one side or above, and the intake water that has passed through the void can scour out sediments outside the sand collecting pipe on the downstream side of the rib and flow in . On the downstream side, open the sand suction port of the sand collecting pipe at a position immediately below or near the bottom of the sand collecting pipe. , The upstream side opens in the vicinity of the center of the sand collecting pipe, and the sand inlet is in the form of a staircase or an inclined line. The mud pumping device according to claim 1, wherein the mud is opened and arranged. The lower half wall of the sand collecting pipe is further enlarged at the upstream end of the sand suction port arranged in a line in the sand collecting pipe. 3. The mud pumping device according to claim 1, wherein the tip sand suction port is opened.