JPS6154960B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a deep well submersible motor pump used for pumping water for water supply, and in particular, to an extremely effective sand control device for pumping water that is economical and capable of supplying water without contaminants. This is related to disclosure.

Therefore, this type of water pumping device in the past was
As shown in the figure, there was a concern that sand and other substances might be mixed in due to suction.

Further, as shown in FIG. 5, in the case of constructing a conventional well with a pipe inside to create a heavy structure, construction was difficult in some places and was not economical.

The present invention has been devised especially in view of the disadvantages in the prior art, and one of its basic purposes is to ensure the pumping and supply of groundwater that is free of sand and other contaminants. It was put in place at the point where

Next, one of the other main objects expected in the present invention is to reduce the running cost by reducing the load on the submersible pump by utilizing the water pressure of groundwater. It is something that

Furthermore, one of the other main objects anticipated in the present invention is that by providing a filtration device in series, a large amount of clean water that is not contaminated with sand etc. can be smoothly supplied. It is something that

Next, one of the other main objects anticipated in the present invention is to effectively improve the overfunction by using silica sand.

Furthermore, one of the other main objects anticipated in the present invention is that by having a simple structure,
This is to make cleaning, replacing, etc. of the filter equipment easier.

Various other objects anticipated in the present invention will be made clear in turn through the following explanation, and the present invention is intended to achieve appropriate and purposeful effects of these characteristics. The gist of its structure is as follows: A pipe 3 communicating with a water collection tank 2 housing a submersible pump 1 has one or more inner pipes 4 having a number of holes 4a drilled in the circumferential surface, and silica sand 6 is placed around the inner pipe 4. The overtank 5 has a large number of holes 5a drilled therein so as to be filled with
The over-tank 5 is surrounded by a metal net 7, and the over-tank 5 is successively installed in succession.
The lower end of the inner pipe is placed at a closed point, and considerable design changes are planned in accordance with the gist of this configuration.

The details of the present invention will be described below with reference to a typical embodiment shown in the drawings, in which a water collection tank 2 housing a submersible pump 1 inserted from a well entrance is connected to an iron pipe 2.
a, and an iron disk 2b with a hole of the same diameter as the pipe 3 in the center are welded together, and the water collection tank 2
The flanges welded to the pipe 3 and the inner pipe 4 communicating with the inner pipe 4 are tightened with bolts and nuts, and the inner pipe 4
A large number of holes 4a are drilled in the circumferential surface using means such as oxygen cutting, and a large number of holes 4a are bored in the circumferential surface of the inner pipe 4 so that the circumferential surface of the inner pipe 4 is filled with silica sand 6, particularly No. 2 silica sand. The inner pipe is fitted with an over-tank 5 with a hole 5a drilled through it, and the over-tank 5 is surrounded by a metal mesh 7.The over-tank 5 is surrounded by a metal net 7, and the over-tank 5 is successively installed, and the lower end of the inner pipe is closed. be.

The present invention has the following features, among others:
By installing a filtration device so as to communicate with the water collection tank 2 that houses the submersible pump 1, the deficiencies of the prior art described above can be effectively corrected, and the following specific effects are achieved. This is what was expected.

That is, by filling the over-tank 5 with silica sand 6 and surrounding the over-tank 5 with a metal net, contamination of sand, etc. could be avoided as much as possible, and in particular, No. 2 silica sand was used. As a result, small particles gather inside during suction, increasing the sand removal rate to 95% to 100%.In addition to sand control, it also removes iron, suspended matter, pigments, etc., and even at overspeed. It was made with a suitable material, and it was designed to eliminate clogging caused by sand, and even when cleaning the device, its function could be restored by washing it with water.

Furthermore, by attaching the filter device to the water collection tank 2, the work of inserting it into the well at the time of construction is simplified, and even if the required space is small, the work can be performed even when a roof is provided above the well, for example. This is what I did. That is, it is possible to insert and support the overtank 5 near the well entrance, and then sequentially tighten the bolts and nuts of the next overtank 5 and water collection tank 2 from above and insert them into the well. This made it possible to avoid the destruction of equipment as much as possible.

Next, by installing the filtration device so that it can be used only in underground water areas, there is no need for the entire device inserted into the well to have a double pipe structure with an inner and outer pipe, simplifying the construction as described above. This reduced construction costs and enabled supply at low installation costs.

Furthermore, the purified water that has passed through the overtank 5 is easily and abundantly supplied to the water collection tank 2 due to the natural water pressure, thereby reducing the load on the submersible pump 1.

As stated above, the purpose of the present invention is to inexpensively supply purified water free of contaminants in a deep well submersible motor pump used for pumping water for water supply. In addition, design changes to ground motor pumps, etc., and design changes to pump types, dimensions, etc. are planned depending on water volume, water quality, etc.

[Brief explanation of the drawing]

1 and 2 are sectional views of essential parts showing one embodiment of a typical pumping device of the present invention, FIG. 3 is a sectional view of a typical pumping device of the present invention, and FIGS. FIG. 5 is a partially cut-away side view showing a conventional embodiment, and FIGS. 6 and 7 are partially cut-away side views of the evaporator. In the figure, 1... submersible pump, 2... water collection tank, 3... pipe, 4... inner pipe, 5...
overtank, 6...silica sand, 7...metal mesh, 8...
This shows a pumping pipe.

Claims (1)

[Claims] 1. The outer circumferential surface of a cylindrical furnace tank 5 having a large number of holes on the peripheral wall surface is covered with a metal mesh 7, and an inner side of the furnace tank 5 is inserted in the direction of the cylindrical core. Both ends of the pipe 4 protrude outward from the filtration tank 5, and the inner pipe 4 located inside the filtration tank 5 is provided with a number of holes. It consists of a filter device filled with silica sand 6, a water collection tank 2 housing a submersible pump 1 connected to a pumping pipe 8 provided separately, and a pipe 3 connected to the water collection tank 2. The pipes 4 of the inner pipes 4 are connected to each other, and a plurality of arbitrary filter devices are sequentially connected to each other by the respective pipes 4, 4, and the lowermost end of the inner pipe 4 is closed. Features: Pumping sand control equipment.