JP6896206B2 - Divided vertical channel mud pumping device - Google Patents

Description

The present invention relates to a mud pumping device for collecting or removing bottom sediments of dams, lakes, rivers, industrial facility water tanks, and the like.

It is necessary to collect and remove many types of underwater sediments such as inflow sediment into dams due to heavy rain and debris flow, mud from lakes and marshes, collection and removal of sediment from rivers, and mud from industrial facility tanks. Many kinds of devices are provided for collecting and removing these precipitates.
The inventor of the present application has also obtained Patent No. 3895505, which enables a wide range of sand-lifting mud, and has applied for Japanese Patent Application No. 2015-116578, but this is not satisfactory and is improved.

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

A water suction tube, which is a vertical water channel that maintains the water suction port at the upstream end of the suction pipe at a height that does not allow it to be buried in the sediment, is erected, and holes or slit-shaped suction tubes arranged with constricted holes along the wall of the water suction tube are installed. A sand collecting pipe portion having a sand mouth and a hole in which constricted holes are arranged in a line or a slit-shaped sand suction port is provided on the bottom or side wall of the suction pipe whose lower end is turned in a predetermined direction. Alternatively, the downstream end of the suction pipe connected to the mud feeding pipe without providing the sand collecting pipe portion is connected to a head or a pumping source such as a siphon, a power pump, a jet pump, an air lift pump, or a vacuum device, and the sediment is deposited. This is a problem in the mud pumping equipment that collects and removes water.

In the mud pumping device in which the sand suction port is opened in the make-up water cylinder portion, since the water absorption cylinder is a vertical water channel, the sediment that invades from the sand suction port due to the accumulation while the device is inactive is the water absorption cylinder. Since it easily accumulates on the inner bottom and tends to be blocked, there are major problems that water cannot be pumped at the start of operation and that it takes time to absorb water and lacks smoothness.

In the mud lifting device of paragraph [0004], a sand collecting pipe portion having a sand suction port is provided downstream of the water suction cylinder with the lower end turned in a predetermined direction, and the mud is lifted for a long distance. In the device (hereinafter referred to as "water-covered mud pumping device"), the sand suction port at the downstream end of the sand collecting pipe near the pumping source is sucked most strongly, and the upper part of the sand suction port is opened like a mortar. There is a problem that a "sucking phenomenon" in which sand is not absorbed on the upstream side of the sand suction port is likely to occur.

Further, in the mud pumping device of paragraph [0004], a sand suction port facing downward is opened at the deepest portion of the lower end of the water suction cylinder provided with the sand suction port, or a sand suction port is provided at the deepest portion. Even in a mud-lifting device (hereinafter referred to as a "vertical mud-lifting device") that inverts and raises mud without providing it, it absorbs sand at the deepest sand suction port or only at the make-up water cylinder. There is a problem that the sand concentration is too low, and if the sand absorption port is provided in the water absorption cylinder to increase the sand absorption concentration, there is a problem that the inner bottom of the water absorption cylinder is likely to be blocked by the sedimentation during the suspension of operation.

In the present invention, a partition is provided along the water channel in the auxiliary water suction cylinder in which the sand suction ports are arranged in a line, and the sand suction port side flow channel on the side where the sand suction port is opened and the sand absorption port are provided. It is divided into a non-sand absorption port side flow channel that sucks and passes upper water without providing a mouth, and both water channels are merged at the lower end of the partition at the lower side of the auxiliary water absorption tube, and the suction water and the suction sediment are mixed.

Collecting and removing the precipitate in a long distance range and absorbing sand and mud in a small point range with a high concentration cannot be achieved only by the present invention, and the inventions separately applied for division are used in combination.

As described above, in the present invention, the mud pumping device that collects and removes the sediment in water while being buried in the sediment prevents the water suction cylinder with the sand suction port from being blocked, and thus is in the initial stage of operation of the device. Stable operation can be ensured by facilitating water flow and sand absorption, increasing the sand absorption distance in the water-covered mud pumping device, and in the vertical mud pumping device with a downward sand suction port at the deepest part. Has the effect of improving the sand absorption concentration.

It is a three-view view of the first embodiment, which is (a) front view, (b) plan view, and (c) side view. In the figure, (2) is a cross-sectional view of part A in FIG. 1, and (e) is a cross-sectional view of part B in FIG. In the figure, (f) is a cross-sectional view of part C of FIG. 1, (g) is a cross-sectional view of part D, and (chi) is a cross-sectional view of part E. The front view of the 2nd Example is shown. In the figure, the figure (i) is a side view taken along the line AA of FIG. 4, and the figure (nu) is a sectional view taken along the line BB. In the figure, (L) is a cross-sectional view of the C part of FIG. 4, (W) is a cross-sectional view of the D part, and (W) is a cross-sectional view of the E part. The front view of the 3rd Example is shown. In the figure, (f) is a side view of AA in FIG. 7, and (yo) is a cross-sectional view of part B. In the figure, (T) is a sectional view taken along the line CC of FIG. 7, and (Re) is a sectional view taken along the line DD. 4 is a diagram showing a fourth embodiment, in which FIG. (No) shows a front view and FIG. (E) shows a side view. In the figure, FIG. 10 (c) is a cross-sectional view of part A of FIG. 10 (c), and FIG. 10 (a) is a cross-sectional view of BB.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 11.

In the first embodiment of the present invention, a three-view view is shown in FIG. 1, and a water suction port 5 is opened at the upper end as shown in FIGS. 2 and 3 for cross-sectional views of each part of the sand collecting pipe 1A and the water absorbing cylinder 2A. A water-covered mud pumping device consisting of a water-covered mud pumping pipe 2A, a sand collecting pipe 1A that is buried and sand is absorbed, and a series of suction pipes 1 that are connected and communicated with a mud feeding pipe 3A that connects the upper end flange to the pumping source. is there.
By projecting the water absorption port 5 of the water absorption cylinder 2A into the water on the sediment, water is passed through the sand collecting pipe 1A with a part or all of it buried to collect and remove the peripheral sediment. It is a device.

In the portion of the sand collecting pipe 1A near the mud feeding pipe 3A, as shown in FIG. 2 (2), there is a sand suction port 6 narrowed in the direction of the pipe just below the sand collecting pipe 1A, and sand is collected. In the cross section B of the pipe 1A, the sand suction ports 6 are narrowed on both sides at the height position shown in FIG. 2 (e), and in the cross section C, the sand supply ports 6 are at the height positions shown in FIG. 3 (f). Is constricted.

A vertical sand suction port 7 along the pipe wall is narrowed in the water absorption cylinder 2A, and an angle-shaped partition plate 4A is provided in the water absorption cylinder 2A as shown in FIG. 3 (chi). Is provided and divided into a non-sand suction port side flow channel d and a sand absorption port side flow channel e, and they are merged and mixed at the f portion shown in FIG. 1 (a) at the lower end.

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

Further, between the upper side of the upstream end of the sand absorbing port 6 and the sand absorbing port 7, a water guiding eave 8 is provided so that the outer side of the eaves is inclined low as shown in FIG. 3 (G), and the water guiding eave 8 is provided at the time of burial. The lower eaves void a is used as a headrace to connect the sediment suction from the sand suction port 7 to the sand suction port 6.

In the second embodiment, as shown in FIGS. 4, 5 and 6, a water suction cylinder 2B having an opening of a water suction port 5 which is an upstream end of the suction pipe 1 is erected, and the lower end is turned downstream. A water-covered channel composed of a semi-circular sand collecting pipe 1B having an inverted U-shaped cross section and a series of suction pipes 1 in which the flanges of the mud feeding pipe 3B extending in the coaxial line direction with the sand collecting pipe 1B are connected and communicated with the pumping source. It is a mud raising device.
A sand suction port 6 is formed on the side wall of the sand collecting pipe 1B, and a sand absorbing port 7 is opened in a slit shape on the pipe wall of the water absorbing cylinder 2B.

As shown in FIG. 5 (N), the water channel in the supplementary water absorption tube 2B is provided with a partition in the direction of the water channel by a flat plate partition plate 4B, and the water channel is divided into a sand suction port side flow channel e and a non-sand absorption port side flow water. It is divided into roads d.

Between the sand suction port 7 of the supplementary water absorption tube 2B and the upper side of the sand absorption port 6 of the sand collection pipe 1B, a flat plate water guide eaves 8 is provided so as to project outward, and the water guide eaves 8 are provided when buried by sediment. Makes it easier to form a headrace underneath.

In Example 3, as shown in FIG. 7, a front view is shown in FIG. 7, and a side view and a cross-sectional view of a main part are shown in FIGS. 8 and 9, a rectangular sand collecting port 6 having a slit-shaped sand suction port 6 is opened in the center of the upper side. It is a water-covered mud pumping device having a pipe 1C.

In the case of this embodiment, the partition plate 4C of the auxiliary water absorption cylinder 2C is a member having an angled cross section, and is partitioned in the direction of the water channel so as to surround the vertical sand suction port 7 from the inside. It is divided into a water flow channel d on the sand mouth side, and the auxiliary water suction cylinder 2C which is vertically divided by the sand suction port 7 is reinforced.

Since the sand suction port 6 is located on the upper surface of the sand collection pipe 1C, the water guide 8 between the sand suction port 7 of the supplementary water suction tube 2C and the sand suction port 6 of the sand collection pipe 1C has an outer hand mirror-shaped flat plate in this embodiment. The grip portion is positioned above the upstream end of the sand suction port 6 and attached to the lower side of the upper water absorbing cylinder 2C with a gap from the upper surface of the sand collecting pipe 1C to facilitate the formation of a headrace under the headrace 8. To maintain the continuity of sand absorption.

In the fourth embodiment, as shown in the front view in FIG. 10 (no) and the side view in the figure (e), the water suction port 5 which is the upstream end of the suction pipe 1 is opened to the upper end to supplement the water suction cylinder 2F. And, a mud feeding pipe 3F provided with a flange connected to the pumping source at the upper end is installed side by side, and the deepest portions of both lower ends are connected by opening the sand suction port 10F downward with the sand collecting pipe 1F. It is a vertical mud pumping device for the suction pipe 1 having a ∪ shape, in which a sand suction port 7 that is narrowed in a vertical slit shape along the pipe wall is opened in the pipe wall of the water suction cylinder 2F. It is a device that performs dredging and sand sampling work while descending to the surface of an object, and lifts sand and mud by placing it on the bottom of the water.

As shown in FIG. 11 (c) and FIG. 10 (c), the cross section of the sand collecting pipe 1F of part A in FIG. 10 (c) and the cross section of BB in FIG. Both side surfaces are closed with side plates 18F, a vertical space water channel k is formed between the side plates 18F, and when buried, upper water is supplied to the outside in the vicinity of the sand suction port 10F to promote suction of sediment.

As shown in FIG. 10 (a), the partition plate 4F of the water absorption cylinder 2F of this embodiment is an angle-shaped member in the water absorption cylinder 2F in the sand inlet side flow channel e and the non-sand absorption port side flow channel d. The water channel is divided to separate the suction of muddy sand and the reliable suction of upper water, and the water is merged and mixed near the lower sand suction port 10F.

The sand absorption port 7 provided on the supplementary water absorption cylinder 2F is capable of enhancing the sand absorption effect because the inflow water from the upper surface of the sediment is sucked in while scouring and sweeping when operating in the buried state. ..
When adjusting the amount of inflow water from the water absorption cylinder 2F, it can be adjusted by changing the diameter of the water absorption cylinder 2F or increasing or decreasing the mesh opening area of the water absorption port 5.

In the case of the vertical mud pumping device of the fourth embodiment, the lower side of the device can be provided with a pressure water injection toward the lower periphery, a pile-shaped crushing rod, or a leg for immobilization.

The present invention provides point sand removal, dredging, fixed point sand removal of sediment in dam lakes, collection and removal of water intake sediment for power generation, irrigation, water supply, etc., and removal of rainwater and drainage channels of industrial plants and various facilities. It facilitates the stable collection and removal of mud, sewers, and sediments in water treatment equipment, does not require a stirring mechanism, and can contribute as an environment-friendly energy-saving mud pumping device that does not turbid the surrounding water.

1 Suction pipe (from water suction port 5 to mud pipe 3A, 3B, 3C, 3F, any downstream end)
1A, 1B, 1C, 1F Sand collection pipe for each device 2 Water absorption tube (when referring to the whole)
2A, 2B, 2C, 2F Water absorption cylinders for each device 3A, 3B, 3C, 3F Mud feed pipes for each device 4A, 4B, 4C, 4F Partition plate for each device 5 Supplementary water absorption port 6 Sand collection port for sand collection pipe 7 Sand absorption port of supplementary water absorption tube 8 Water guide 9 Connecting rib 10 Tip sand absorption port 10F Sand absorption port 11 Round iron (strainer)
12 Leg 13 Rib 14 Rib 15 Rib 16 Supporting rib 17 Round iron 18F Side plate 21 Reinforcing material 22 Reinforcing material a Water conducting channel under the water guiding rod 8 b Gap in the sand suction port 6 of the connecting rib 9 c Suction of the leg ribs 13 and 14 Gap of 6 sand ports d Non-sand absorption port side flow channel of supplementary water absorption tube 2 e Sand absorption port side flow channel of supplementary water absorption tube 2 f Confluence point of sand collection pipe 1 and supplementary water absorption tube 2 water guide of leg rib 15 Eaves 8 Lower gap i Sand suction port 6 of support rib 16 Upper side gap j Gap just below the sand collection pipe of the leg 12 k Space channel between the mud feed pipe 3F and the auxiliary water absorption pipe 2F

Claims (1)

In the suction pipe of the mud pumping device that collects or removes the sediment in water, the mud feeding pipe that connects the downstream end of the suction pipe to the pumping source is arranged so as to be buried in the sediment that accumulates on the bottom of the water. If necessary, a sand collecting pipe with an open sand suction port is connected and intervened, and then an upwardly extending water absorbing cylinder is opened in the water above the sediment so that the water above the sediment can be sucked, and the connection is communicated. Then, a partition plate was provided in the water passage in the water absorbing cylinder along the direction of the water channel, and the water passage in the water absorbing cylinder was arranged by constricting a hole or a slit-shaped sand suction port along the pipe wall for a certain section. A mud pumping device in which a water inlet side flow channel and a non-sand suction port side flow channel that sucks only upper water are divided into inflows, and the water is merged and mixed at the lower end of the partition plate on the lower side of the auxiliary water absorption tube.

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