JPS628640B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluid suction device used for pumping up and conveying earth and sand, and the present invention relates to a fluid suction device used for pumping up and conveying earth and sand, and it is possible to easily change the flow rate, lift height, conveyance distance, etc. by switching using the same power source, and to prevent clogging of solid lumps. It is an object of the present invention to provide a fluid suction device that allows easy removal of fluid.

In general, fluid suction devices either change the flow rate, head, or flow by changing their power source, or use devices with various capabilities selectively depending on the application. In the former case, the scope of change is narrow, and depending on the type of suction fluid, it may become unusable due to clogging, etc., so separate devices are required depending on the type of suction fluid, and in the latter case, too. Many models are required.

The gist of the present invention is that a high-pressure fluid injection nozzle, a protection tube, and a plurality of discharge pipes are coupled in series in the above order, with the diameter of the high-pressure fluid injection nozzle being set to the minimum and increasing sequentially, and each discharge pipe has a corresponding one. Suction pipes with diameters up to the diameter of the pipes are connected via valves, and an air introduction pipe is connected to the protection pipe, and the suction pipes are joined upstream of each valve, and this joining part is A valve for removing solid matter is provided on the upstream side, and an intake valve is provided on the suction pipe portion of the protection tube on the downstream side of the confluence.

To explain in detail the embodiment shown in the figure, Fig. 1 shows a case where two discharge pipes are connected to one main suction pipe and a sub suction pipe branched from the main suction pipe with different pipe diameters, and a high-pressure fluid injection nozzle is used. 1, a protection pipe 2, a first discharge pipe 3, and a second discharge pipe 4 are connected in a straight line with their central axes 5 aligned, and a main suction pipe 6 is installed on the wall of the second discharge pipe 4. ing. This main suction pipe 6 has an A valve 7 and a solid mass removal valve 8 interposed in series at an interval in its flow path, and a sub-valve is connected from the space between the valve 7 and the solid mass removal valve 8. This is a configuration in which the suction tube 9 is branched. The sub-suction pipe 9 is piped to the empty space between the first discharge pipe and the high-pressure fluid injection nozzle 1 via the C-valve 10, and the suction pipe 11 connects the intake valve 12 between the branch position and the C-valve 10. The structure is such that the pipes are connected through the pipe.
In addition, an air introduction pipe 13 is connected to the introduction valve 1 in the protection tube 2.
4.

The fluid suction device configured as described above is shown in FIGS.
Used as shown in the figure. That is, when the high-pressure fluid supply power of the high-pressure fluid injection nozzle 1 is constant, FIG. 2 shows a case where a high head is obtained, and the high pressure is A fluid such as high-pressure water is injected from a high-pressure fluid injection nozzle 1. At this time, the cavitation that occurs in the protection pipe near the high-pressure fluid injection nozzle is eliminated by the air introduced from the air introduction pipe 13, and the negative pressure of the high-pressure water that is powerfully injected causes the main suction pipe 6 to The object to be sucked is sucked from. The suction path passes from the main suction pipe 6 to the auxiliary suction pipe 9, joins the high pressure water at the first discharge pipe 3, and is discharged from the second discharge pipe 4.

FIG. 3 shows a method for solving the problem when the object to be sucked contains coarse particles and the like clogs the auxiliary suction pipe 9. In this case, the A valve 7 and the intake valve 12 are opened to remove solid particles. Valve 8 and C valve 10 are closed, and high pressure water is injected from the high pressure fluid injection nozzle. As a result, air enters from the intake pipe 11, which passes from the sub-suction pipe 9 to the main suction pipe 6 and reaches the second discharge pipe 4 to remove the blockage.

FIG. 4 shows a case where a volume is required even though the lift is reduced, and the sub-suction pipe 9 is not used, and the main suction pipe 6's A valve 7 and the solid mass removal valve 8 are opened to perform suction and flow. It shows.

FIG. 5 shows a case where only the intake valve 12 is closed and the other valves are fully open.

FIG. 6 shows a configuration in which the first discharge pipe 3 and the second discharge pipe 4 are opposed to each other in a merging cavity, and the main suction pipe 6 is connected to this merging cavity.

Figures 7 and 8 show the case where the main suction pipe 6 and the sub suction pipe 9 are made independent, and when different objects to be suctioned are sucked, mixed and conveyed, or when the diameter of the jet stream is changed. It is configured so that it can be used in any case. In particular, FIG. 8 shows a simple configuration using straight tubes connected together, and also suggests a configuration in which the number of discharge tubes is three or more and a suction tube is connected to each of them.

As described above, a plurality of high-pressure fluid injection nozzles, protection pipes, and discharge pipes are sequentially connected in series with the high-pressure fluid injection nozzle having the smallest diameter, and a suction pipe is connected to each discharge pipe via a valve. Even with the source power, the lift height, flow rate, flow distance, etc. can be freely set by opening and closing the valve of the suction pipe. Therefore, it is economical to have a variety of functions with one fluid suction device. Furthermore, since the air introduction tube is provided in the protective tube portion, an efficient flow action can be obtained without causing cavitation. Furthermore, since multiple suction pipes are connected to the discharge pipe independently, it is suitable for mixing three or more types of substances, and depending on the valve operation, the discharge pipe itself can be used as a kind of injection nozzle. In addition to being able to suction and flow a large amount of fluid by injecting it into the subsequent discharge pipe, even if the sub-suction pipe is clogged with solid matter, the solid matter can be removed simply by operating the solid matter removal valve. It has the advantage that it can be easily removed.

[Brief explanation of the drawing]

FIGS. 1, 6 to 8 are configuration diagrams of embodiments of the apparatus of the present invention, and FIGS. 2 to 5 are illustrations of changes in the operation of the apparatus shown in FIG. 1. DESCRIPTION OF SYMBOLS 1... High-pressure fluid injection nozzle, 2... Protection pipe, 3... First discharge pipe, 4... Second discharge pipe, 6... Main suction pipe, 7...
A valve, 8... Valve for solid matter removal, 9... Sub suction pipe, 10... C valve, 11... Intake pipe, 13... Air introduction pipe.

Claims (1)

[Claims] 1 A high-pressure fluid injection nozzle, a protection tube, and a plurality of discharge pipes are connected in series in the above order, with the diameter of the high-pressure fluid injection nozzle being the minimum and increasing sequentially, and each discharge pipe has a diameter with the diameter of the pipe as the upper limit. The suction pipes are connected via valves, and the protection pipe is connected to an air introduction pipe, and the suction pipes are joined upstream of each valve, and the solid mass is connected to the upstream side of the joining part. A fluid suction device characterized in that a removal valve is provided, and an intake valve is provided in a suction pipe portion on the protection tube side downstream of the confluence section.