JPH0215528Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to a drainage filtration device for filtering water stored in ponds, etc.

"Prior Art" Conventional sewage filtration systems have one-sided water supply and fixed filters. As a result, the filters tend to become clogged, making it difficult to withstand long-term operation, making it difficult to collect waste, and requiring frequent replacement of the filters.

``Problem that the invention attempts to solve'' This invention attempts to obtain a filtering device that can squeeze out and collect the dirt clogged in the filter, eliminate clogging, and be able to operate for long periods of time without replacing the filter. .

``Means for solving the problem'' This proposal involves inserting a closed-bottom porous drainage pipe into the inside of the cylinder from the upper end plate of the cylinder with closed ends, and providing the drainage port of the drainage pipe on the outside of the upper end plate. A lower end open water pipe is provided that penetrates the upper and lower end closed portions of the pipe, and the porous side surface of the porous drainage pipe is surrounded by a sponge sheet, and diagonal cuts are formed on the outer surface of the sheet. A plurality of flat pipes are arranged facing each other on the outer surface of the sheet, a number of notched grooves are formed on the surface of the pipes facing the sheet, and the pipes, the sponge sheet, the drain pipe and the above are arranged on the outside of the pipes. It consists of a drainage filtration device equipped with a water-resistant sealed bag that houses the water pipe.

``Function'' Therefore, the pump 1 pumps the accumulated wastewater from the pond 17 etc. from the upper end of the lower end opening water pipe 6 toward the lower end opening of the same pipe 6.
When water is supplied at step 9, the waste water fills the water-resistant sealed bag 11 through the same opening, passes through the sponge sheet 7, passes through the waste material, enters the porous drain pipe 4, and excess water is discharged from the drain port 5 of the same drain pipe 4. and returned to the pond 17, etc. When the sponge sheet 7 is clogged with filth and reaches an excessive limit, this is determined by looking at the water drained from the drain port 5, and the water supply to the water pipe 6 is stopped by operating the pump 19 or valves a, b, and c. and on-off valve d (fourth
) is closed and water is sucked from the water pipe 6, the internal pressure of the sealed bag 11 decreases, the bag 11 contracts, the flat pipe 9 is pressed against the sponge sheet 7, and the sheet 7 is further connected to the porous drainage pipe 4. (See Figure 5). Due to this compression, the sheet 7 is squeezed, and the dirt stuck inside the sheet and in the diagonal cut 8 passes through the cutout groove 10 and descends into the flat pipe 9 together with water, and flows from the lower end opening of the water pipe 6 into the water pipe. 6, the sponge sheet 7 is discharged and collected to the outside, and the clogging of the sponge sheet 7 is eliminated. Then, the valve d is opened and the same operation as described above is repeated to collect waste from the pond 17 and the like and to overwash the stored water.

"Example" Three three-way valves a, b, and c are interposed in series in the pipe 18 inserted into the water storage of the pond 17, and the three-way valves a, c on both sides
Pump 19 is connected in parallel between c and the right three-way valve c
A waste discharge port 20 is formed in the central three-way valve b, and a water supply port 21 is formed in the three-way valve b in the center.As shown in FIG.
By turning the handles 22 of b and c in the direction of the arrow, the water stored in the pond 17 is transferred to the water inlet 21 of the central three-way valve b.
By turning the handle 22 in the opposite direction (Fig. 5), the stored water can be discharged from the waste outlet 20 of the valve c on the right side, and the pump 19 can be continuously rotated in the same direction to pump the stored water. Form the device. The water supply port 21 of the central three-way valve b is connected to the water supply pipe 6 that opens at the upper end of the drainage filtration device. In the drainage filtration device, a bottom-end closed porous drainage pipe 4 is inserted into the cylinder 1 through the central through-hole 3 of the upper end plate 2 of the cylinder 1 with both ends closed, and the drainage port 5 of the drainage pipe 4 is placed outside the upper end plate 2. A lower end open water pipe 6 is provided which passes through the upper end closed cylinder 4' and the lower end closed part 4'' of the drain pipe 4.
The water inlet 21 of the central three-way valve b is directly connected to the upper end opening of this water pipe 6. Then, the porous side surface of the porous drainage pipe 4 is surrounded by a sponge sheet 7, and on the outer surface of the sheet 7, diagonal cuts 8, 8 are formed at 45 degrees with respect to the vertical, as shown in FIG. The depth of the cuts 8, 8 may be as shown in FIG. 2. Also, on the outside of the same sheet 7, there are a plurality of (3 to 3)
Four vertical flat pipes 9 are arranged facing the outer surface of the sheet 7, and a large number of notched grooves 10 are formed on the surface of the pipe 9 facing the sheet 7. 9, the above sponge sheet 7,
A water-resistant sealed bag 11 containing the drain pipe 4 and the water supply pipe 6 is arranged, and its upper edge 11' is sandwiched between the upper end plate 2 and the upper end flange 1' of the closure tube 1. The reference numeral 12 in the figure is a through hole of the porous drain pipe 4, and the total flow area of the hole 12 is larger than the flow area of the water pipe 6. Again 1
3 is a fixing string between the flat pipe 9 and the sealed bag 11;
Reference numeral 14 designates a drainage hole provided in the closed cylinder 1, 15 a fixed tank, 16 a circulating water pipe, and d an on-off valve.

``Effects'' Since the present invention is constructed as described above, it is possible to squeeze out and collect the dirt clogged inside the overused sponge sheet 7 and the diagonal cuts 8 and 8 by simply changing the water supply direction, and it can withstand long-term operation. As a result, the efficiency can be improved.

[Brief explanation of the drawing]

Figure 1 is a longitudinal cross-sectional view showing the proposed drainage filtration device;
2 is a cross-sectional view taken along the line A-A in FIG. 1, FIG. 3 is a perspective view of the sponge sheet, FIG. 4 is a diagram of piping in the past, and FIG. 5 is a diagram of the state during waste discharge. 1...Both ends closed cylinder, 2...Top end plate, 4...Bottom end closed porous drain pipe, 5...Drain port, 4'...Top end closed part, 4''...Bottom end closed part, 6...Bottom end open feed Water pipe, 7... Sponge sheet, 8... Diagonal cut, 9
... Flat pipe, 10 ... Notch groove, 11 ... Water-resistant sealed bag.

Claims (1)

[Scope of utility model registration request] Insert the bottom-end closed porous drainage pipe into the inside of the cylinder from the top end plate of the double-end closed cylinder, provide the drainage port of the drainage pipe on the outside of the top end plate, and penetrate through the top-end closure part and the bottom-end closure part of the drainage pipe. A water pipe with an opening at the lower end is provided, and the porous side surface of the porous drainage pipe is surrounded by a sponge sheet, diagonal cuts are formed on the outer surface of the sheet, and a plurality of flat pipes are arranged opposite to each other on the outer surface of the sheet. A large number of notched grooves are formed on the surface of the pipe facing the sheet, and a water-resistant sealed bag is provided on the outside of the pipe to accommodate the pipe, the sponge sheet, the drain pipe, and the water pipe. A drainage filtration device.