JP2001087604A - Simple filter apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple filter apparatus not leaving such a problem that a filtering speed is slow, sufficient treatment capacity is not achieved and power insufficiency is considered because treated water filtered by a porous plate passes through the slight gap between porous plate and a pressure difference reducing plate to be allowed to flow out of the flow opening of the lower part of the pressure difference reducing plate and a problem is left in precise filtering not a little because clarified water passing through the porous plate is allowed to flow out of an outflow pipe as it is. SOLUTION: A cylindrical body 54 is provided above a filter tank 53 having a raw water inflow port 51, a clarified water outflow port 52 and a drain port 57 so as to leave an appropriate interval and the raw water from the raw water inflow port is guided to the revolving space formed between the filter tank and the cylindrical body and filtered by a filter member 55 provided in the cylindrical body and the clarified water is allowed to reach the clarified outflow port of the clarified water outflow pipe 7 arranged to the filter member. Raw water can efficiently and rapidly be separated and filtered and the clarified water can be guided to the outside of the filter apparatus through the clarified water outflow pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple filtration device.

[0002]

2. Description of the Related Art As a simple type of filter of this kind, there is a filter of Japanese Patent Publication No. 60-15372. According to the present invention, a perforated plate is provided in a tank body having a raw water inlet and a drain port at an appropriate interval (a swirling flow space), and a pressure difference reducing plate is provided in the perforated plate with a gap. The outlet pipe is provided below, and is characterized by using a swirling flow space to separate the specific gravity, or by using a pressure difference reducing plate to eliminate clogging of a perforated plate.

[0003]

In the above document, the treated water filtered by the perforated plate passes through a small gap between the perforated plate and the pressure difference reducing plate, and then flows through the lower opening of the pressure difference reducing plate. It is possible that the filtration speed is slow, the processing speed is not sufficient, and the power is insufficient. Also, the clarified water that has passed through the perforated plate is discharged as it is through the outflow pipe, so that there is still a considerable problem in precision filtration.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to separate and filter raw water efficiently and quickly, and to guide supernatant water to the outside of a filtration device through a clear water outflow pipe. And

According to a first aspect of the present invention, a cylinder is provided at an appropriate interval above a filtration tank having a raw water inlet, a clear water outlet, and a drain port, and raw water from the raw water inlet is supplied to the filtration tank and the cylinder. A simple filtration device configured to lead to the swirling space formed therebetween, filter through a filter provided in the cylinder, and then reach the clarified water outlet of a clarified water outflow pipe arranged in the filter. is there.

[0006] It is an object of the invention of claim 2 to surely generate supernatant water in a filter, and to guide the generated supernatant water to the outside of the filtration device via a clear water outflow pipe.

[0007] A second aspect of the present invention is a simplified filtration device configured to reach a clarified water outflow pipe above the filter, and to guide the supernatant water of the filter to a clarified water outlet of the clarified water outflow pipe. is there.

Another object of the present invention is to suppress the swirling flow in the lower part of the filtration tank and to further settle and separate.

A third aspect of the present invention is a simplified type filtering apparatus having a structure in which a baffle plate is provided at a lower portion of a filtration tank.

[0010]

DETAILED DESCRIPTION OF THE INVENTION Raw water is guided from a pipe and a raw water inflow pipe through a raw water inflow port in a tangential direction of a filtration tank, and then reaches a swirling space, where the cylindrical body provided in the swirling space turns as a guide. Separation is performed with a centrifugal force and a specific gravity difference.
At this time, since the function as an inclined plate is given to the enlarged skirt in the enlarged skirt and the narrow passage of the cylindrical body, more efficient separation can be achieved. The treated water (primary separated treated water) separated by the cylindrical body is further separated by a fine gap such as a hole, a slit, a fine line, or a combination thereof of a filter (a screen, a filter cloth, a filter tube, etc.). Then, clear water is introduced into the filter. In addition, garbage or treated water (polluted water) that cannot pass through the pores of the filter is
It is led to the lower part of the filtration tank.

The treated water (secondary treated water) led to the filter is settled and separated in the filter, and the supernatant water that floats flows through a clear water outlet opening at the top of the filter. Then, it is led to a treated water tank outside the filtration device via a pipe. In addition, the garbage and treated water led under the filtration tank are:
It flows down to the lower settling separation chamber, and the flow is suppressed by the reduction plate, so that the settling (floating) separation is performed more efficiently. The supernatant water of the settling separation chamber may be led to the filter again. In addition, the refuse deposited on the inner bottom surface of the filtration tank is guided to a treatment tank outside the filtration device via a drain port, a drain pipe, and a pipe when the solenoid valve is opened. The supernatant water
If there is foreign matter such as dust in the clarified water, it is ideal to remove the foreign matter by means not shown.

[0012]

An embodiment of the present invention will be described below.

FIG. 1 shows a raw water treatment unit, 1 is a raw water tank, 2 is a raw water horn, 3 is a raw water inflow pipe, 4 is a first solenoid valve provided on a pipe 3, and 5 is a filtration valve. Apparatus (structure and operation will be described later), 6 is a raw water inflow pipe provided in the filtration apparatus 5, 7 is a clarified water outflow pipe provided in the filtration apparatus 5, 8 is a pipe for clarified water, and 9 is provided in the pipe 6 2nd solenoid valve, 10 is tubing 8 for clear water
A more branched backwash pipe, 11 is a fifth solenoid valve provided in the pipe 10, 12 is a water tank for backwash, 13 is a pipe for conveying backwash water, 14
Denotes a backwashing phone, 15 denotes a fourth solenoid valve provided in the pipe 13, 16 denotes a drain pipe, 17 denotes a third solenoid valve provided in the drain pipe 16, and 18 denotes a separation tank for accommodating refuse. A strainer (not shown) (not shown) may be provided in the pipe 3 or the like (each pipe is the same).

The operation of the raw water treatment unit will be described. An operation switch is turned ON. This operation turns on the raw water horn
And the timer T1 operates, and the first and second solenoid valves 4, 9
Is opened, raw water is supplied to the filtration device 5 through the pipe 3 and the raw water inflow pipe 6. The clarified water filtered by the filtration device 5 passes through a clarified water outflow pipe 7 and a pipe 8, and is guided to a treated water tank (not shown). A part of the treated water passing through the pipe 8 is guided to the water tank 12 through the pipe 10 when the fifth solenoid valve 11 is opened by a command from a sensor 12a provided in the water tank 12. When the operation of the timer T1 is stopped, the first and second solenoid valves 4, 9 are closed,
The supply of the raw water to the filtration device 5 is stopped, the third solenoid valve 17 is opened, and the timer T2 is operated, and the refuse accumulated in the filtration device 5 passes through the drain pipe 16 and reaches the separation tank 18. You. When the operation of the timer T2 is stopped, the third solenoid valve 17 is closed, and the discharge of dust from the filtration device 5 is stopped. This stop returns to the initial state.

When the raw water pump is turned on and the timer T1 is operated, the first and second solenoid valves 4 and 9 are opened, and the raw water passes through the pipe 3,
When the pressure switch 19 of the filtration device 5 detects an abnormality in the state of being supplied to the filtration device 5 (for example, when the filter is clogged and the pressure rises above a set value), the first and second electromagnetic valve
4 and 9 are closed, the backwashing phone 14 is turned on, and the fourth solenoid valve 15
Opens, and the water for backwashing cleans (backwashes) the filter body of the filtration device 5. As a result of this backwashing, when the pressure switch 20 of the filtration device 5 detects the set value (for example, when clogging of the filtration body is eliminated), the third solenoid valve 17 is opened and the timer T3 is operated. Then, the refuse of the filtration device 5 passes through the drain pipe 16 and reaches the separation tank 18. When the operation of the timer T3 is stopped, the third solenoid valve 17 and the fourth solenoid valve 15 are closed, and the backwashing horn is stopped.
14 is stopped. The suspension returns to the initial state,
Alternatively, the supply of the raw water to the filtration device 5 by the raw water horn 2 and the pipe 3 is repeated.

The structure of the filtration device 5 will be described. A filtration tank 53 having a clarified water outflow pipe 7 provided with a raw water inflow port 51 for connecting a raw water inflow pipe 6 and a clarified water outflow port 52 in a tangential direction; A cylindrical body 54 provided at an appropriate interval H (swirl space) at an upper portion 53a of the filter 53; a filter 55 provided at an appropriate interval H1 (raw water passage) within the cylindrical body 54; 53
One or several baffles 56 provided in a lower portion 53b (sedimentation separation chamber), and a drain port 57 for connecting a drain pipe 16 provided in the lower portion 53b of the filtration tank 53. The tubular body 54 has an enlarged skirt 54a, and the enlarged skirt 54a functions as an inclined plate.

[0017]

According to the first aspect of the present invention, a cylindrical body is provided at an appropriate interval above a filtration tank having a raw water inlet, a clear water outlet, and a drain port, and raw water from the raw water inlet is separated from the filtration tank by the cylinder. This is a configuration in which the liquid is guided to a swirling space formed between the bodies, filtered by a filter provided in the cylinder, and then reaches a clarified water outlet of a clarified water outflow pipe arranged in the filter. Therefore, raw water is efficient,
It can be separated and filtered quickly, and the supernatant water can be led out of the filtration device through a clear water outflow pipe.

According to a second aspect of the present invention, a clarified water outflow pipe is provided above the filter, and the supernatant water of the filter is guided to a clarified water outlet of the clarified water outflow pipe. Therefore, there are features that the supernatant water can be surely generated in the filter body and that the generated supernatant water can be guided to the outside of the filtration device through the clear water outflow pipe.

A third aspect of the present invention is such that a baffle plate is provided at a lower portion of the filtration tank. Therefore, there is a feature that the swirling flow in the lower part of the filtration tank is suppressed and further sedimentation and separation can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic view of a unit showing an example of use of the present invention.

FIG. 2 is a flowchart illustrating an operation state of the unit in FIG. 1;

FIG. 3 is an enlarged front view of the filtration device of the present invention.

FIG. 4 is an enlarged plan view of the filtration device of the present invention.

FIG. 5 is an enlarged sectional view of the filtration device of the present invention.

[Explanation of symbols]

 1 Raw water tank 2 Raw water horn 3 Piping 4 First solenoid valve 5 Filtration device 51 Raw water inlet 52 Refined water outlet 53 Filtration tank 53a Upper 53b Lower 54 Cylindrical body 54a Expanded bottom 55 Filtration body 56 Baffle plate 57 Drain port 6 Raw water inflow pipe 7 Clarified water outflow pipe 8 Piping 9 2nd solenoid valve 10 Piping 11 5th solenoid valve 12 Water tank 13 Piping 14 Backwashing phone 15 4th solenoid valve 16 Toren pipe 17 3rd solenoid valve 18 Separation tank 19 Pressure switch 20 Pressure switch H interval (swirl space) H1 interval (raw water passage)

Claims (3)

[Claims] 1. A cylinder is provided at an appropriate interval above a filtration tank having a raw water inlet, a clear water outlet, and a drain port, and raw water from the raw water inlet is formed between the filtration tank and the cylinder. A simplified filtration device configured to guide the clarified water to the clarified water outlet of a clarified water outflow pipe arranged in the filter after being guided to the swirling space and filtered by a filter provided in the cylinder. 2. The structure according to claim 1, wherein the clarified water outflow pipe is arranged above the filter to guide the supernatant water of the filter to a clarified water outlet of the clarified water outflow pipe. Simple filtration device. 3. The simplified filtration device according to claim 1, wherein a baffle plate is provided below the filtration tank.