JPS5987294A - Hydrojet vacuumer - Google Patents

Abstract

PURPOSE:To pump-up mud etc. free from the trouble of closure by opening the nozzle- shaped discharge port of a submersible pump into a transportation pipe and allowing the terminal edge part of a mud pumping-up pipe whose starting edge part is opened into the sedimentation water to communicate to the vicinity of the starting edge part of the transportation pipe and allowing the terminal edge part of an air feeding pipe to be opened at the lower edge of the mud pumping-up pipe. CONSTITUTION:The suction port 1a of a submersible pump 1 is opened into the upper water W1, and the discharge port 1b is formed into nozzle form and opened into a transportation pipe 2. A mud pumping-up pipe 3 whose starting edge part 3a is opened into the sedimentation water W2 allows the terminal edge part 3b to communicate to the vicinity of the starting edge part 2a of the transportation pipe 2. The terminal edge part 4b of an air feeding pipe 4 which is opened into the atmosphere is opened to the vicinity of the lower edge of the mud pumping-up pipe 3. When the submersible pump 1 revolves, the sedimentation water W2 is inhaled, and mixed with the air inhaled from the air feeding pipe 4, and sent into the transportation pipe 2, and therefore, air lift effect is generated together with jet action, and mud etc. can be easily transported.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Object of the Invention The present invention relates to an underwater jet vacuumer for discharging sludge at a dredging site or the like.

BACKGROUND ART Conventionally, a plunger pump or a piston pump has been used to discharge sludge at a dredging site, etc., and a method of sending fresh water using a turbine has been carried out. However, at river sites, fresh water is difficult to collect, and blockages are likely to occur due to dust and dust.

OBJECTS OF THE INVENTION (1) To provide a submersible jet vacuumer 4 that is less likely to cause blockage and can effectively discharge sludge.

(2) Structure of the Invention In the submersible jet vacuumer according to the present invention, the discharge port of the submersible pump whose suction port extends into clean water is formed in the shape of a nozzle, opening σ into the width feed pipe described later, and the starting end portion is formed into a nozzle shape. The terminal end of the lifting fJd pipe opened into the sedimentation water was connected to the vicinity of the starting end of the Kinkyoku Yuzu transmission pipe, and the terminal end of the air transport pipe was opened near the communication capital between the iiJ storage mud pipe and the transport pipe. The structure is as follows.

Regarding the drawing VC of the embodiment, l is a submersible pump such as a sand pump, and the VC opening σ in the clean water Ml used for pumping D L & at dredging construction sites, etc., and the discharge port 1.
It is formed into a blt/slug shape and has an opening σ into the transport pipe 2, and the terminal end 2b of the transport pipe 2 is completely extended to a predetermined mud removal place. 8
is a mud lifting pipe whose starting end 3a is opened into a sunken crosspiece W2, and the end is connected to near the beginning of the transport pipe 2. 4
The starting end s4a of the air supply pipe is open to the atmosphere, and the terminal end 4b has an opening δ near the communication portion between the mud pumping pipe 3 and the transport pipe 2. 5 is an air hook attached to the air supply pipe 4, and 6 is a pressure gauge provided near the pump discharge port 1b.

When the submersible pump 1 rotates, clean water W1 sucked in from the suction port la is discharged through the transport pipe 2, but at the same time, precipitated water W2 is sucked in from the starting end s8a of the slurry pumping pipe 8, and the water is drawn into the air supply pipe 4.
The water is sucked in from the fL chamber, mixed with air, and sent to the transport pipe 2, so that the inside of the transport pipe z becomes a mixture of air bubbles and water, which creates an air lift effect along with the jet action, and lifts the sludge in the settled water W2. It can be easily lifted from the mud pipe 8 and transported through the transport pipe 2 to a predetermined mud removal location. In this case, if slightly pressurized air is supplied from the air pipe 4, the air lift effect can be further reduced.

(3) Effects of the invention Ginger pumps and piston pumps are unsuitable for operation at construction sites where there are a lot of aquatic plants and dust, and it is also difficult to pump clean water using a turbine in dirty water.

According to the present invention, a submersible pump that can be operated even in sludge is used, and the pump suction port is opened into tap water.
Since only the mud pipe that merges with the transport pipe is opened into the sedimentation water, it is possible to discharge the diameter of the pipe as it is without causing any blockage, and the jet action due to the merger of the transport pipe and the mud pumping pipe , and the combination of air + IJ soft effect due to the suction action from the ventilation pipe, the sludge can be transported extremely effectively.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the underwater jet vacuumer of the invention X, and FIG. 2 is a sectional view of the main parts of the underwater jet vacuumer of the invention. DESCRIPTION OF SYMBOLS 1... Submersible pump, la... Suction port, 1b... Discharge port, 2... Transport pipe, 2a... Starting end part, 8... Sludge pumping pipe, 8a... Starting end part, 8b...Terminal part, 4...
Feed, pipe, 4b... terminal part, Wl... water supply, W2.
...Sedimentation part.

Claims (1)

[Claims] It-
i=e, - Open 1" ridge into feed pipe (2), starting end (8a)
The terminal end (3b) of the slurry pumping pipe (3), which is opened in the crosspiece (Wl), is connected to the vicinity of the starting end (2a) of the transport pipe (2), and the air supply pipe (4) is An underwater die-end pumper 0 in which the terminal end (4b) is arranged with a VC opening σ near the communication part between the mud pumping pipe (3) and the transport pipe (2).