JPH02225725A - Method and apparatus for collecting water sludge - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method and apparatus for recovering underwater sludge, and its purpose is to collect sludge from estuary bottoms, harbor bottoms, lake bottoms, underground water sources, etc. To provide an underwater sludge recovery method and an underwater sludge recovery device capable of sucking up sludge deposited on the ocean floor and discharging it to a sludge recovery site on land for recovery without muddying the surrounding waters.

(Prior art) In recent years, the deposition of sludge on the bottom of water such as estuary bottoms, harbor bottoms, lake bottoms, and underground water sources has not only become a problem of shallow water depth, but has also caused problems such as causing pollution. , these sludges are being dredged and cleaned.

Conventionally, as shown in Fig. 7, a digging operation arm (101
) and installed on the barge (110).
The sludge at the bottom of the water can be removed by dredging the sludge at the bottom of the water using a packet <102) provided at the tip of the operating arm (lot) of lift it from the water to the surface,
The sludge was collected on the barge (110) or on land while draining water from the periphery of the packet (102).

(Problem to be solved by the invention) However, in the conventional water bottom sludge recovery method as described above, when the packet (102) excavates the water bottom, sludge is spread around the water bottom, and the packet (102) is transported from the water to the surface of the water.
2) When the packet (102) is lifted, the sludge inside the packet (102) pollutes the surrounding water area, and when the packet (102) is lifted above the water, the water dripping from the periphery of the packet (102) pollutes the water surface. In lakes, etc., there are problems in that the aesthetic appearance is spoiled, and in water source areas, if this water is used for drinking water, it gives an unclean appearance.

Therefore, in view of the above-mentioned conventional situation, the inventors have developed an underwater sludge recovery method that does not cause the above-mentioned problems when recovering and treating sludge at the bottom of water such as estuary bottoms, harbor bottoms, lake bottoms, and underground water sources. and continued intensive research on underwater sludge recovery equipment.

(Means for Solving the Problems) That is, in the method of the present invention, a suction hose is arranged from a barge floating on the water surface to the bottom of the water where sludge is deposited, and a suction hose is disposed from a barge floating on the water surface to the bottom of the water where sludge is deposited. The suction hose and the discharge hose are connected to a suction and discharge tank device arranged on a barge, and the sludge at the bottom of the water is sucked into the suction and discharge tank device from the suction port of the suction hose, and the suction and discharge tank device The sludge is collected under pressure at the sludge collection site by force-feeding the sludge from the sludge to the discharge hose.

Further, in the device of the present invention, an arm-shaped operating means is installed at the tip of a barge floating on the water surface, and the operating means is used to move the position on the water bottom from the top of the barge to the water bottom where sludge is deposited. On the other hand, a discharge hose is arranged from the barge to the sludge collection site on land. A compressor and a vacuum generator are connected to the tank device by a supply pipe via an air control device, and the vacuum generator converts the pressurized air supplied from the compressor into vacuum using the Venturi effect and extracts it. The suction/discharge tank device has a substantially hollow cylindrical shape, and a discharge pipe connected to the discharge hose is inserted from the top to the vicinity of the inner bottom portion thereof, and the suction hose is connected to the central portion thereof, and the suction/discharge tank device has a substantially hollow cylindrical shape. A vacuum pressure supply pipe is connected to the upper part, and the end of the pipe that supplies pressurized air from the compressor is connected to an air control device and a vacuum generator via a valve, and the air control device and pressurization and vacuum generation device are connected to each other through a valve. The starting ends of pressurized air supply pipes are connected for communication.

Further, the barge is floating on the water surface, and its position on the water surface is fixed by a plurality of wire rods arranged from the barge to land.

By providing the above method and apparatus, we have successfully created a method and apparatus that solve all of the above problems.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 6.

In the drawing, (1) consists of a compressor (2), a suction/discharge tank device (3), a vacuum generator (4), and an air control device (5). This figure shows a suction and pressure feeding device placed on a barge (6) floating on the water surface.

An operating arm (7) is installed at the tip of the barge (6), and the operating arm (7) extends from the suction/discharge tank device (3) of the suction pumping device 1 (1) along the operating arm (7). A suction hose (8) connected to the suction/discharge tank device (3) is disposed up to the tip of the suction/discharge tank device (3). On the other hand, a discharge hose (9) is provided which is connected to the suction/discharge tank device (3) of the suction/pressure feeding device (1) and extends from the sludge collection site on land to the suction/discharge tank device (3).

A suction attachment (20) is provided at the tip of the suction hose (8) to be placed directly on the bottom of the water where sludge is deposited.

The barge (6) has wire rods (10), (10), (10) such as wires and ropes fastened to the corners until it reaches land, and these wire rods (10), (10), (lO) are In the installed state, one end thereof is fastened to a fixing member such as a pile on land, and the position on the water surface is fixed by the wire rods (10), (10), (10).

In one embodiment of the present invention, the suction and exhaust tank device (3) consists of two sets of suction and exhaust tanks (31) and (32), but it does not necessarily include two sets of suction and exhaust tanks (31) and (32).
It does not have to be a set, and may be a single number or three or more sets.

The suction hose (8) is connected to a suction pipe (11), and this suction pipe (11) is connected near the center of the suction and exhaust tanks (31) and (32).

(12) is a suction check valve connected to this suction pipe (11).

The discharge hose (9) is connected to a discharge pipe (13), and this discharge pipe (13) is connected to the discharge pipe (1) via a connecting discharge pipe (14).
5).

This discharge pipe (15) is a substantially hollow cylindrical suction and discharge tank (3).
Pages are inserted from the top of 1) and (32) to near the inner bottom. Further, (16) is a discharge check valve.

(17) is a level meter that detects the liquid level in the suction/discharge tanks (31) and (32), and this level meter (17) generates an air signal and sends the signal to the air control device (5).

(33) is a supply pipe that supplies vacuum pressure or pressurized air, and this supply pipe (33) is connected to the suction/discharge tank (31).
, (32).

The vacuum generator (4) uses an air ejector (41) to convert compressed air into vacuum using the Venturi effect.

(42) is a pipe that supplies pressurized air from the compressor (2), (43) is a valve, and the pipe (42) communicates with the air control device (5).

The air control device (5) includes an air control valve (51) and a suction/exhaust switching valve (5) that are controlled by a signal from a level meter (17).
2) and (air distribution) valve (43).

To operate this vacuum generator (4), the pipe (4)
2) and the compressor (2), and adjust the valve (43) appropriately, thereby increasing the ejector population (4).
5), and as a result, vacuum pressure is generated at the vacuum port (44) of the ejector (41).

Vacuum pressure and pressurized air are supplied to the suction/discharge tanks (31), (3) via the suction/discharge switching valve (52) and the supply pipe (33).
2).

The air ejector (41) is an ejector vacuum port (44)
It has a characteristic that even if the vacuum pressure of
This makes it possible to take out vacuum pressure for suction and pressurized air for pressure delivery from one compressed air line independently and in parallel, or intermittently.
The stand and its connecting pipe (42) could be made into one piece.

To use the suction pressure feeding device (1), the compressor (2
), adjust the valve (43) and operate the suction/exhaust switching valve (52) to transfer the vacuum pressure generated by the vacuum generator (4) through the supply pipe (33) to the suction/exhaust tank (
31) while sending compressed air to the suction/discharge tank (32), the suction check valve (12) (tank (31) side) and discharge check valve (16) (tank (32) side) open. The other check valves are closed.

The sludge is vacuum-suctioned from the suction attachment (20) through the suction hose (8) and enters the suction/discharge tank (31), which eventually activates the level meter (17) and closes the air control valve (
51) to switch the intake/exhaust switching valve (52), which in turn supplies compressed air to the intake/exhaust tank (31), and switches the compressed air to the intake/exhaust tank (31).
Vacuum will be sent to 2), and each check valve will work in the opposite direction to the first.

The sludge in the suction and discharge tank (31) is pushed by compressed air, and the sludge in the tank (3
1) side) and from the discharge pipe (13) to the discharge hose (9).
The sludge is then pumped to the sludge collection site on land. At this time, one of the suction/discharge tanks (32) is in a suction state, and sludge is sucked out.

By repeating this operation, sludge can be suctioned and pumped continuously.

When there is only one set of suction/discharge tank devices (3), suction pressure feeding is only performed intermittently.

The suction attachment (20) includes a substantially cylindrical main body (21), and is arranged at the lower part of the main body (21), and is driven by a motor (22) installed in the main body (21) to generate large and small gears. A sludge suction part (25) having an annular shape in plan view is provided, which is rotated via (23) and (24).

This sludge suction part (25) is attached to the lower part of a shaft part (26) which is rotatably suspended from the center of the lower part of the main body part (21), via an arm member (27) fixed to this shaft part. is,
The large gear (23) fixed to the shaft (26) is meshed with the small gear (24) fixed to the shaft of the motor (22), and is rotated by the rotational drive of the motor (22). It has become.

A suction chamber (28) that communicates with the suction/discharge tank device (3) via a suction hose (8) is formed with a partition wall in the main body (21), while the sludge suction part (25) has sludge on the outside. A plurality of suction openings (29A) (29A), (29A), etc. each having a suction opening (29a) (four in this example) are separated from each other, and the suction opening (29A) is connected to the main body (29A). 21) is configured to communicate with the suction chamber (2nd).

This suction opening (29A) is the sludge suction port (29a)
is formed to protrude outward from the outer periphery of the sludge suction part (25), and a plurality of scraping blades (29b) are formed vertically on the outer end of the inner wall.
(29b)... are provided.

The sludge suction part (25) is rotated at the bottom of the water by the rotational drive of the motor (22), and the sludge suction port (29a) is rotated at the bottom of the water.
The sludge deposited on the bottom of the water is scraped into the suction opening (29^) by the scraping blades (29b), (29b)...
The sludge is sucked into the suction hose (8) through the suction opening (29A) through the suction chamber (28) of the main body (21) by the vacuum suction action of the suction/discharge tank device (3).

Next, a series of operations of the underwater sludge recovery method using the apparatus of the present invention will be explained.

First, as described above, the sludge deposited on the bottom of the water is sucked into the suction hose (8) by the vacuum suction action of the suction/discharge tank device (3) using the suction attachment (20), and then the suction hose (8) is After that, the suction and exhaust tank device it (3
) is sucked into the suction/discharge tank (31).

The sludge sucked into the suction/discharge tank (31) is forced into the discharge hose (9) by pressurized air sent into the suction/discharge tank (31) by switching the suction/discharge switching valve (52). ) and then discharged to an onshore sludge collection site where it is collected.

In the above embodiment, the suction attachment (20) is attached to the tip of the suction hose (8), but the present invention is not limited to this.
The sludge at the bottom of the water may be sucked from the opening at the end of the suction hose (8) without attaching the suction attachment (20) to the end of the suction hose (8).

(Effects of the Invention) This invention provides a suction hose, a discharge hose, a suction and discharge tank device installed on a barge in which these suction hoses and discharge hoses are connected, and a pressurized and vacuum-pressure air supply to the suction and discharge tank device. A suction hose is installed from the barge floating on the water surface to the bottom of the water where sludge is deposited, while a discharge hose is installed from the barge to the sludge collection site on land. The suction hose and the discharge hose are connected in communication with a suction and discharge tank device arranged on a barge, and the sludge at the bottom of the water is sucked into the suction and discharge tank device from the suction port of the suction hose, and from the suction and discharge tank device. Since the sludge is pumped to the discharge hose and collected at the sludge collection site, the following effects are achieved.

In other words, the sludge deposited on the bottom of the water is directly sucked in by a suction hose, the sludge is sucked into a suction/drainage tank device on a barge, and the sludge is collected from the suction/drainage tank device to a sludge collection site on land by a discharge hose. Therefore, surrounding sludge does not spread on the bottom of the water, and water from the sludge does not drip onto the water surface, so it does not pollute the surrounding water area and contributes to the beautification of the environment at tourist destinations such as lakes. It does not give an appearance of uncleanness to water sources used for drinking water.

Furthermore, the barge floating on the water surface is fixed in position on the water surface by a plurality of wires arranged from the barge to land, thereby producing the following effects.

In other words, in order to move the barge on the water surface, the barge can be moved by pulling the wire in the desired direction from land, so in order to move the barge on the water surface, it is necessary to attach the driving means to the barge. There is no need to provide one, and the barge can be made smaller and lighter. Also, with the barge floating on the water surface,
Since the sludge collection work is carried out at the bottom of the water, no sludge is visible to the naked eye, contributing to environmental beautification.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an underwater sludge recovery device according to an embodiment of the present invention, FIG. 2 is a schematic flowchart of a suction and pressure feeding device used in this underwater sludge recovery device, and FIG. 3 is a part of this suction and pressure feeding device. An enlarged explanatory diagram of a certain suction/discharge tank device, FIG. 4 is an explanatory diagram of the usage state of the suction and pressure feeding device, FIG. 5 is a central vertical sectional view of a suction attachment used in an embodiment of the present invention, and FIG. 6 is a bottom view thereof. , FIG. 7 is an explanatory diagram of the prior art. (2)...Compressor (3)...Suction and exhaust tank device (4)...Vacuum generation bag! I (5)...Air control device (6)...Barge (7)...
・Operation means (8)...Suction hose (9)...
Discharge hose (10)...Wire rod (15)...
...Discharge pipe (33) ... Supply pipe (43) ... Valve Figure 2C

Claims (3)

[Claims] (1) A suction hose is arranged from a barge floating on the water surface to the bottom of the water where sludge is deposited, while a discharge hose is arranged from the barge to the sludge collection site on land, and the suction hose and discharge hose are connected to the platform. Each of the suction hoses is connected in communication with a suction/discharge tank device arranged on the ship, and the sludge at the bottom of the water is sucked into the suction/discharge tank device from the suction port of the suction hose, and the sludge is force-fed from the suction/discharge tank device to the discharge hose to the sludge collection site. An underwater sludge recovery method characterized by recovering sludge. (2) An arm-shaped operating means is installed at the tip of a barge floating on the water surface, and the suction hose is moved from the barge to the bottom where sludge is deposited by the operating means. On the other hand, a discharge hose is arranged from the barge to the sludge collection site on land, and the suction hose and discharge hose are connected to a suction and discharge tank device arranged on the barge, and a compressor is connected to this suction and discharge tank device. and a vacuum generator are connected to each other by a supply pipe via an air control device, and this vacuum generator converts pressurized air supplied from a compressor into vacuum using the Venturi effect and extracts it, and the suction/exhaust tank The device has a substantially hollow cylindrical shape, and a discharge pipe connected to the discharge hose is inserted from the top to the vicinity of the inner bottom, and the suction hose is connected to the discharge hose in the vicinity of the center thereof, and pressurization or vacuum pressure is supplied. A pipe is connected to the upper part, and the end of the pipe that supplies pressurized air from the compressor is connected to an air control device and a vacuum generator via a valve. An underwater sludge recovery device in which the starting ends of supply pipes are connected. (3) The underwater sludge recovery device according to claim 2, wherein the barge floating on the water surface is fixed in position on the water surface by a plurality of wire rods arranged from the barge to land.