JPH10165778A - Filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of connected pipings to a container and to enhance the reliability of the container while miniaturizing the container by using both of a water supply pipe suppling a liquid to be purified into the container and an exhaust pipe discharging air at a time of the washing of a filter module. SOLUTION: Characteristic constitutionl elements are a water supply pipe 18 supplying water to be piurified at a time of usual operation, an exhaust pipe 21 discharging air at a time of the washing of a filter module and the box-shaped communication part 23 within a container 11. At the time of usual operation, water to be purified flows in the container 11 from the water supply pipe 18 provided to the upper part of the container 11 to be purified by the filter module 12 to flow out of the outflow pipe 22 provided to the top part of the container 11. When the purifying capacity of the filter module 12 lowers, the filter module 12 is washed with air. At the time of the washing of the filter module 12, air flows in the container 11 from the air supply pipe 19 provided to the lower part of the container 11 to wash the filter module 12 to be discharged from the exhaust pipe 21. Since the box-shaped communication part 23 has an opening part 25 on its upper side, water to be purified at the time of usual operation flows in the filter module 12 from the upper part of the container 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a filtration device.

[0002]

2. Description of the Related Art During normal operation, water to be purified flows in through a water supply pipe provided below the vessel, is purified by a filtration module, and flows out through an outflow pipe above the vessel. If the purification performance of the filtration module decreases due to long-term purification, it is washed and reused. In particular, in a filtration device using a hollow fiber membrane module, gas is supplied from an air supply pipe below the vessel, the hollow fiber is shaken and washed, and the gas is exhausted from an exhaust pipe above the vessel.

[0003] As a conventional filtration device, Japanese Patent Application No. 7-291244 has been proposed.
There is a known technique described in the specification. During normal operation, water to be purified flows in from a water supply pipe provided below the container and is purified by a filtration module. Also, at the time of washing the filtration module, gas flows in from the air supply pipe provided below the container, and the impurities attached to the filtration module are shaken off,
Air is exhausted from an exhaust pipe provided above the container.

[0004]

However, the above-mentioned known techniques have the following problems.

That is, in the known art, it is necessary to connect a pipe to a container separately for a water supply pipe and an exhaust pipe. Also,
Since the water supply pipe is installed below the container, the height of the container increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a water supply pipe and an exhaust pipe, and to reduce the number of pipes connected to the container by turning the opening of the pipe in the container upward so that the container can be reduced in size. To provide a simple filtration device.

[0007]

According to the present invention, there is provided a filtration apparatus having a container, a separator in the container, and a plurality of filtration modules connected to the separator. And a gas exhaust pipe for exhausting air at the time of washing the filtration module.

In addition, the opening of the piping in the container which serves as both the water supply pipe and the exhaust pipe is directed upward.

In addition, the exhaust pipe is installed on an upper surface or an upper part of the water supply pipe in a vertical direction.

[0010] The filtration module is a hollow fiber membrane module, and includes a hollow fiber membrane and a module cylinder surrounding the hollow fiber membrane.

In the present invention constructed as described above, the number of pipes connected to the container can be reduced by using both the water supply pipe and the exhaust pipe, and the reliability is improved by reducing the number of openings in the container. be able to. Further, by using the water supply pipe below the container also as the exhaust pipe, the space below the container can be reduced, the number of objects can be reduced, the economy can be improved, and the container can be downsized.

In addition, since the water to be purified flows from above the container by making the opening of the piping serving as the water supply pipe and the exhaust pipe upward in the container, the bending moment applied to the filtration module can be reduced. And maintain the integrity of the filtration module.

Further, by installing the exhaust pipe above or above the water supply pipe in the vertical direction, gas can be exhausted from the exhaust pipe during the washing of the filtration module as in the conventional case, and there is no particular problem.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. 1 and 2, and a modified example of the first embodiment will be described with reference to FIG.

FIG. 1 shows a filtering apparatus applied to the first embodiment of the present invention. The filtration device comprises a container 11, a filtration module 12 disposed in the container 11, and a filtration module 12
, And a horizontal plate 15 provided with an air supply hole 16 disposed below the lower end of the filtration module 12.

The constituent elements of this embodiment are a water supply pipe 18, an exhaust pipe 21 and a vessel 1 which are used both for supplying purified water during normal operation and for exhausting gas when washing the filtration module.
1 is a box-shaped communication part 23.

In this embodiment, during normal operation, the water to be purified flows through the water supply pipe 18 above the vessel 11, is purified by the filtration module 12, and is discharged from the outlet pipe 22 above the vessel 11.
More outflow. When the purification performance of the filtration module 12 decreases, the filtration module 12 is washed with gas. At the time of cleaning the filtration module 12, gas flows in from the air supply pipe 19 below the container 11, cleans the filtration module 12, and exhausts the gas through the exhaust pipe 21. Therefore, since both water supply and exhaust can be performed, the number of pipes connected to the container 11 can be reduced, and the reliability of the container 11 can be improved. In addition, by reducing the space below the container 11, the size of the container 11 can be reduced, and the number of materials can be reduced, so that the economy can be improved.

The details of the box-shaped communication portion in this embodiment will be described with reference to FIG.

Since the opening 25 is located above the box-shaped communication part 23, the water to be purified during normal operation flows into the filtration module 12 from above the container 11. Since the bending moment applied to the filtration module 12 is related to the flow rate of the purified water flowing into the filtration module 12 and the distance from the fixed point above the filtration module 12, the bending moment according to the present invention is small. Soundness can be maintained.

FIG. 3 is a longitudinal sectional view of the filtration device according to the first embodiment.

The filtering apparatus to which this embodiment is applied has the same configuration as that of the embodiment described with reference to FIG. 1, and the characteristic component of this embodiment is a communication part 24 of a circular pipe in the container 11.

In the embodiment shown in FIG. 3, the communicating portion of the first embodiment is not formed in a box shape but in a circular tube. The present invention can be realized with a simple structure, and the soundness of the filtration module 12 can be maintained by turning the opening 25 upward as in the embodiment of FIGS.

A second embodiment of the present invention will be described with reference to FIGS.

The filtering apparatus to which the present embodiment is applied has the same configuration as that of the embodiment described with reference to FIG. 1, and the constituent elements which characterize the present embodiment are that the water to be purified flows from each direction in the container 11. Circumferential pipe 31 that can be used.

In this embodiment, during normal operation, the water to be purified flows from the water supply pipe 18 above the container 11 through the circumferential pipe 31 through the plurality of openings 25 provided in the circumferential pipe 31,
The water is purified by the filtration module 12 and flows out of the outflow pipe 22 above the container 11. Further, at the time of cleaning the filtration module 12, the gas flows in from the air supply pipe 16 below the container 11, cleans the module 12, and exhausts the gas from the exhaust pipe 21 through the plurality of openings 25 provided in the circumferential pipe 31. Accordingly, the water to be purified can be used as both the water supply and the exhaust, and the water to be purified can flow uniformly into each filtration module 12. 1, 2 and 3, the number of pipes connected to the container 11 can be reduced, and the reliability of the container 11 can be improved.
In addition, by reducing the space below the container 11,
It is possible to reduce the size of the device and to reduce the number of objects, thereby improving the economic efficiency.

The details of the circumferential pipe in this embodiment will be described with reference to FIG. Since the water to be purified flows into the container 11 from the plurality of openings 25 provided in the circumferential pipe 31, the water to be purified can uniformly flow into each of the filtration modules 12. Further, since the circumferential pipe 31 is fixed by the flange 32 and the support members 33 at several places, the peripheral pipe 31 can be easily removed at the time of inspection of the equipment in the container 11, so that the manufacturability and the assembling property are good.

[0027]

According to the present invention, the number of pipes connected to the container can be reduced by using both the water supply pipe and the exhaust pipe.
The reliability of the container can be improved. In addition, by using the function of water supply also as the exhaust above the container, the space below the container can be reduced, the size of the container can be reduced, the number of objects, etc. can be reduced, and the economy can be improved.

In addition, since the water to be purified flows from above the container by making the opening of the piping serving as the exhaust pipe and the water supply pipe upward in the container, the bending moment applied to the filtration module can be reduced. And maintain the integrity of the filtration module.

Further, by installing the exhaust pipe above or above the water supply pipe in the vertical direction, gas can be exhausted from the exhaust pipe at the time of washing the filtration module in the same manner as in the prior art. Can be realized.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a filtration device according to a first embodiment of the present invention.

FIG. 2 is a partial explanatory view of the filtration device according to the first embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of a filtration device according to a modification of the first embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a filtration device according to a second embodiment of the present invention.

FIG. 5 is a horizontal sectional view of a filtration device according to a second embodiment of the present invention.

[Explanation of symbols]

11 container, 12 filtration module, 14 separator, 1
5 horizontal plate, 16 air supply hole, 18 water supply pipe, 19 air supply pipe, 20 drain pipe, 21 exhaust pipe, 22 outlet pipe, 23
... box-shaped communication part, 25 ... opening part.

Claims (4)

[Claims] 1. A water supply pipe and a filtration module for supplying a liquid to be purified into said container in a filtration device including a container, a separator provided in said container, and a plurality of filtration modules connected to said separator. A filtering device, which also serves as an exhaust pipe for exhausting air during washing. 2. The filtering device according to claim 1, wherein an opening of the piping serving as the water supply pipe and the exhaust pipe in the container is upward. 3. The filtering device according to claim 1, wherein the exhaust pipe is installed on a vertical upper surface or above the water supply pipe. 4. The filtration device according to claim 1, wherein the filtration module is a hollow fiber membrane module, and includes a hollow fiber membrane and a module cylinder surrounding the hollow fiber membrane.