JPS6058215A - Filter apparatus - Google Patents

Abstract

PURPOSE:To perform filtering certainly and to attain to reduce the load and clogging of a filter material layer, by providing the filter material layer, and a precipitation part in one water tank and passing raw water through the filter material layer while raising the same as a vortex stream. CONSTITUTION:The valve 16 for a filtrate outflow and washing water infllow pipe 6 and the valve 17 for an overflow pipe 12 are opened while the valve 18 for a washing water inflow pipe 9 and the valve 19 for a precipitate discharge port 15 are closed to operate a pump 9. A gradually falling vortex stream 14 is generated in raw water flowed in from an inflow port 13 and coarse dust substance is separated and precipitated by centrifugal force of the vortex stream 14 to be precipitated to the bottom part of the water tank 1. Raw water is converted to the center rising reversal stream of the vortex stream 14 to reach the interior of a rotor 3 and filtered by the filtering function of a water passing wall 5 when it passes said wall 5. Subsequently, the raw water is filtered through a filter material layer 2 and reaches an outflow port 7 to be recirculated to a basin provided to the outside of the water tank 1 through a pipe 6.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filtration device in which a filter medium layer and a settling section are provided in one water tank.

Conventionally, there have been filtration devices in which a tank for a filter medium layer and a sedimentation tank are formed separately, but the present invention provides a filter medium layer and a sedimentation section in one water tank so that an appropriate filtration action can be performed. This paper proposes a filtration device with the aim of downsizing and rationalizing the device.

An explanation will be given based on an example in which the present invention is applied as a cyclic filtration device.

In the figure, (1) is a water tank with a hopper-shaped bottom. Further, (2) is a filter layer located above the water tank (1). This filter medium layer (2) is formed from a granular filter medium such as filter sand, and has a space (4) in the rotating body (3).
). The rotating body (3) has substantially all or part of its outer circumferential wall made up of a water-permeable wall (5) such as a filter net that also functions as a filter. Further, a filtered water outflow/washing water inflow pipe (6) is located inside the rotating body (3), passing through the rotating body on its rotational axis and extending outside the water tank (1).

This filtered water outflow/washing water inflow pipe (6) is fixed to the water tank (1) so as not to rotate when the rotating body (3) rotates.

In the figure, the filtrate is an outlet formed in the filtered water outflow/washing water inflow pipe (6). The gathering part of this outlet (7) is covered with a filter net (8).

Nine, is the outlet (7) located within the filter layer (2)?
I# In times of disaster, it functions to drain the Roka Hyakume to the cable tanks rll(1-) using the plane rope 1-, but when cleaning the filter media, the cleaning water supplied from the cleaning water inlet pipe (9) is used to flow into the rotating body (3). It functions to cause water to flow into the water tank (1) through the water passage wall (5) of the rotating body (3).

In addition, 00 in the figure is a rotation handle for manually rotating the rotating body (3), and 01) is the water passage wall (5) of the rotating body (3).
A is the overflow port installed above the water tank (1).

Further, α■ in the figure is an inlet through which raw water such as pond water supplied by a pump (P) flows into the water tank (1).

This inlet (13) allows raw water to flow into the water tank (1) so that a swirling flow θ4) that gradually descends along the inner circumferential wall of the water tank (1) is generated in the lower part of the water tank (1).

(1) This is a sediment discharge port formed at the bottom of the water tank (1). This sediment discharge port θ9 is for discharging the precipitated substances in the raw water accumulated at the bottom of the water tank (1) to the outside. belongs to.

Next, the filtration action of this filtration device will be described.

Open the first valve ae1 for the filtrate outflow and wash water inflow pipe (6), the second valve 07 for the overflow 02), open the third valve OQ for the wash water inflow pipe (9), and open the sediment discharge port αω.
The fourth valve (11) is closed to operate the pump (P). Due to this operation, raw water flows into the water tank (1) at the inlet 0, but the raw water gradually rises in the lower part of the water tank (1). Since the raw water flows in such a way that a descending swirling flow a (a) is generated, coarse particles, etc. in the raw water are separated by the centrifugal force of the swirling flow a4 and settle along the inner circumferential wall of the water tank (1). 1) It settles at the bottom.

Then, the raw water becomes the central upward reverse flow of the swirl flow (141) and reaches the rotating body (3), but the raw water first passes through the water passage wall (5) of the rotating body (3). Water wall (5
) is filtered by the filter function of the filter layer (
2), is filtered, reaches the outlet (7), and is circulated to a pond or the like outside the aquarium (1) through the filtrate outflow/cleaning water inflow pipe (6).

Then, the precipitated substances such as coarse debris accumulated at the bottom of the water tank (1) are discharged to the outside of the water fI (1) through the precipitate discharge port 09 by opening the fourth valve o9 at an appropriate time.

Next, the filter medium cleaning action of this filter device will be explained. The first valve αe is closed, the third valve 0 barrel is opened, and the washing water is passed from the washing water supply pipe (9) to the filtered water outflow/washing water inflow pipe (6) and the outflow port (7) to the rotating body (3). to wash the filter medium layer (2). At the same time, the rotating handle (
Rotate the rotating body (3) with IO.

Due to the rotation of this rotating body (310:), the outer surface of the water passage wall (5) and the cleaning brush 01) are slid together, and the water passage wall (5)
The adhering suspended matter on the outer surface of the tank is dissociated and removed and reaches the inside of the water tank (1). Further, due to the rotation of the rotating body (3), the granular filter media of the filter media layer (2) are agitated and rubbed together, dissociating and removing the suspended solids attached to the filter media, and at the same time, the inner surface of the water passage wall (5) and the granular filter media are rubbed together, and the suspended matter adhering to the inner surface of the water passage wall (5) is also dissociated and removed. These adhering suspended solids are then transferred to the rotating body (3)
The cleaning water supplied inside passes through the ice wall (5) and reaches the outside of the rotating body (3), the pick, and the water tank (1).

In this case, the passage of the adhering suspended solids from the water passage wall (5) is not inhibited by the filter function of the water passage wall (5) itself.

Firstly, the adhering suspended solids in the rotating body (3) pass through the water passage wall (5) during filtration.
) is smaller than each water passage hole (mesh of filter net, etc.), and secondly, the adhering suspended solids in the rotating body (3) are crushed due to the agitation and collision of the granular filter media during cleaning, and become smaller. Because there is.

The adhered suspended solids that have reached the water tank (1) are discharged from the sediment outlet α9 to the water tank (1) together with the washing water by opening the fourth valve a1.
It is discharged to the outside.

Incidentally, if sediment such as coarse dust particles is accumulated at the bottom of the water tank (1), the sediment is also discharged to the outside of the water tank (1) at the same time.

In the filtration device according to the present invention configured as described above, during filtration, raw water reaches the water tank (1) from the inlet θ
) The raw water from the inlet (l) flows into the water iK! (1) so that a spiral flow Oa gradually descends in the lower part of the water tank (1). Therefore, coarse particles and other substances in the raw water are separated and settled by the centrifugal force of the swirling flow 04, and settle at the bottom of the water tank (1).

Then, the descending swirling flow (the central upward flow of 1 cup) flows out of the water tank (1) from the outlet (7) through the filter layer (2).

Therefore, the raw water passes through the filter layer (2) after the coarse dust substances and the like are separated and removed by the centrifugal force of the swirling flow θ, so that the raw water is properly filtered by these two processes. If this is viewed from the side of the filter layer (2), the filtration load on the filter layer (2) can be reduced and the number of clogging trenches can be reduced.

In addition, the filtration device according to the present invention performs these functions in one water tank (1) without separately providing a filter layer tank and a sedimentation tank unlike conventional ones, so that the device can be miniaturized. Rationalization can be achieved, and any hindrance to raw water filtration due to such a configuration is eliminated due to the effect that the sedimentation of coarse dust particles in the raw water is forcibly carried out by the centrifugal force of the zero vortex flow. Does not occur.

[Brief explanation of drawings]

The drawing is a sectional view showing an embodiment of the filtration device according to the present invention. Main symbols in the diagram...(1): Aquarium, (21: tli
I material layer, (crab outlet, (+3): inlet, H:i
Makiryu, 051. Sediment outlet. Patent applicant: Takara, T7, Yume x Kanji and 1 other person 〆1 Procedural amendments imported) December 27, 1972 Patent Office Commissioner Kazuo Wakasugi 1, Indication of case Patent application No. 164171 of 1988 2, Name of the invention Filtration device 3, relationship with the case of the person making the amendment Patent applicant 4, agent postal code 105 Address Hirasawa Building, 1-13-4 Toranomon, Minato-ku, Tokyo Telephone: 501-2580 Name (6745) Patent attorney Yasu Original Act-5, Subject of amendment (1) Claims column of the specification (2) Detailed explanation of the invention column 6 of the specification, Contents of amendment (1) Claims column of the specification Correct as shown in the attached sheet. (2) The section from line 15 on page 3 of the specification to line 18 on the same page is amended as follows. [(I5) is a sediment discharge port for discharging to the outside the precipitated substances in the raw water deposited at the bottom of the water tank (1). This sediment discharge port α is formed at any position of the water tank (1), but in the illustrated example, it is formed at the bottom of the water tank (1). Claims: A water tank (1), a filter layer (2) located above the water tank (1), and a swirling flow (+41) that gradually descends the raw water in the lower part of the water tank (1). The inlet (131) that flows into the water tank (11) and the descending swirling flow Q
A filtration device having an outlet (7) that allows the central upward flow of 41 to flow out to the outside of the water tank (1) through the filter medium layer (2), and a sediment discharge port 0!51 formed in the water tank (11).

Claims (1)

[Claims] A water tank (1), a filter layer (2) located in the upper part of this water tank (1), and a water tank so that a swirling flow (14) that gradually descends the raw water is generated in the lower part of the water tank (1). (1) an inlet (13) that allows the flow to flow into the water tank (1); an outlet (7) that allows the central upward flow of the descending swirling flow α to flow out of the water tank (1) through the filter layer (2); A filtration device with a sediment outlet (149) formed at the bottom.