JPH0985019A - Filter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter device, in which filter cake is not accumulated, whereas in a conventional filter, filter cake accumulates on the surface of filter medium and flow rate of water falls down. SOLUTION: Water flowing in from an inlet port 2 causes a propeller 9 to rotate so that a brush 8 mounted on an axis 7 is rotated in a cylindrical filter medium 5 to remove filter cake attached onto the surface of the medium 5, and if a valve 10 is opened, the filter cakes are discharged from an outlet port 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtering device for filtering impurities such as water used in homes, offices, factories and the like.

[0002]

2. Description of the Related Art Conventionally used filtration devices are those in which impurities such as dust and turbid substances in water, that is, filter substances are deposited on a filter medium during use. If the filter cake accumulates, the resistance to water flow increases and it becomes impossible to obtain a sufficient amount of water flow. Therefore, in the case of such a filtering device, it is necessary to clean it frequently.

Therefore, in a water purifier for home use, one using a hollow fiber membrane module having a very large surface area,
It is used in the opposite direction to wash away the filter cake.

[0004]

However, even in the case of a filtration device using a hollow fiber membrane having a very large surface area, the filtration product will eventually accumulate and the amount of water will decrease, making it unusable. Also, even if water is flowed in the opposite direction,
The filter residue cannot be removed sufficiently.

The present invention is to solve the problems of the conventional structure as described above, and to provide a filter device capable of sufficiently removing the filter material accumulated on the filter medium and not causing a decrease in the amount of water. Has an aim.

[0006]

[Means for Solving the Problems] The first means of the present invention for attaining the above-mentioned object is provided on a shaft which is rotated by the rotation of the propeller when water propelled from the inlet rotates the propeller. The brush rotates in a cylindrical filter medium to remove the filter residue adhering to the surface, and when the valve is opened, the filter product is discharged from the discharge port.

According to the second means of the present invention, the wiper having an elastic member arranged in the filter medium reciprocates in the filter medium by the water pressure of the water flowing in from the inflow port, and the valve opens the discharge port at the time of this return. In this way, the filtration device is configured to discharge the filter residue from the discharge port.

Further, in the third means of the present invention, a wiper having an elastic member arranged in the filter medium reciprocates in the filter medium by the water pressure of the water flowing in from the inflow port to remove the filter residue adhering to the surface. The filter device discharges the filtered material from the discharge port when the valve provided at the discharge port is opened.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described. FIG. 1 is a cross-sectional view showing the configuration of this embodiment. Reference numeral 1 denotes an exterior main body having an inflow port 2 through which water connected to a faucet or the like of the water supply flows in, an outflow port 3 through which filtered water flows out, and a discharge port 4 for discharging a filter material provided with a valve 10. is there. The valve 10 can be opened and closed by a user operating a switch (not shown), and when the valve 10 is opened, water or the like in the filtering device can be discharged from the discharge port 4. Exterior body 1
Inside, a cylindrical filter medium 5 whose both ends are sealed by a sealant 6, and a propeller 9 are provided between the filter medium 5 and the inflow port 2. As the filter material 5, a fluorine-based porous membrane is used in this embodiment, but it is not particularly limited to this material. The propeller 9 is provided at one end of a rod-shaped shaft 7 that passes through substantially the center of the filter medium 5. In addition, a brush 8 formed by spirally implanting hair is provided on the shaft 7.

The operation of this embodiment will be described below. Valve 10
Is normally closed, and the water guided to the inflow port 2 from the tap of the water supply or the like is filtered by the filter material 5 and flows out from the outflow port 3 to the outside. That is, the water guided to the inflow port 2 is guided to the inside of the filter medium 5 because the periphery of the filter medium 5 is sealed by the sealant. Further, since the outlet 4 side of the filter medium 5 is also sealed by the sealant, this water is pushed out from the inside of the filter medium 5 to the outside. When passing through the filter medium 5, impurities such as dust and turbidity contained in the water are filtered to become clean water. In this way, the filtered water is taken out from the outlet 3.

At this time, according to the present embodiment, the filter material 5 is filtered and the filter residue attached to the surface of the filter material 5 is removed as follows. That is, the propeller 9 arranged in front of the filter medium 5 rotates by the water flow flowing into the filter medium 5, and the brush 8 attached to the shaft 7 connected to the propeller 9 also rotates inside the filter medium 5 at the same time. . By the rotation of the brush 8, the filter material adhering to the inner peripheral surface of the filter medium 5 is scraped off and removed. At this time, since the brush 8 has a spiral shape, this filter residue moves to the discharge port 4 side. Therefore, the filter material does not deposit on the filter medium 5, and the water flow resistance does not increase and the amount of water flow does not decrease. The filter 10 can be discharged to the outside from the discharge port 4 by opening the valve 10 by the user operating a switch (not shown) at an appropriate timing.

Particularly in the case of the present embodiment, since the rotation of the propeller 9 is utilized, it is effective when the flow rate is high.

(Second Embodiment) Next, a second embodiment of the present invention will be described. FIG. 2 is a sectional view showing this embodiment. Reference numeral 11 denotes an exterior main body having an inflow port 12 connected to a faucet of the water supply, for inflow of water, an outflow port 13 for outflow of filtered water, and an exhaust port 14. Inside the exterior body 11, a cylindrical filter material 15 having both ends sealed with a sealing material 15a and a valve 18 for selectively opening and closing the inlet 12 and the outlet 14 are provided. Inside the filter material 15, an elastic body 17 composed of a spring having one end fixed to the exterior body 11 and a wiper 16 connected to the other end of the elastic body 17 are provided.

The operation of this embodiment will be described below.
When water flows in through the inlet 12, this water pressure causes the valve 1
8 is displaced around the corner portion of the exterior 11 and the inlet 12
Is opened so that the discharge port 14 is closed. At this time,
The wiper 16 is located at the inlet of the filter medium 15, that is, at the position indicated by 16a. The water pressure of the inflowing water pushes the wiper 16 back to the end portion of the filter medium 15, that is, the position indicated by 16b. That is, the water pressure overcomes the urging force of the elastic body 17 to move the wiper 16 to the position 16b.

When the inflow of water from the inlet 12 is stopped,
The valve 18 is again displaced around the corner of the exterior 11 to close the inlet 12 and open the outlet 14. At this time,
The wiper 16 is moved to the base 16a by the urging force of the elastic body 17.
Return to the position indicated by. That is, the wiper 16 reciprocates inside the filter medium 15. During this movement, the wiper 16 slides on the inner peripheral portion of the filter medium 15 to remove the filter residue attached to the surface of the filter medium 15. The removed filter cake moves to the discharge port 14 side by the return movement of the wiper 16 and is discharged to the outside from the discharge port 14 because the discharge port 14 is open.

While the structure of the first embodiment is particularly effective when the flow rate is high, the structure of the present embodiment is particularly effective when the flow rate is low.

Further, in the structure shown in FIG. 2, even if a valve is provided in the discharge port 14 instead of the valve 18 and this valve can be opened and closed by a switch, the same effect is obtained.

[0018]

According to the first means of the present invention, both ends are provided in an exterior main body having an inflow port through which water flows in, an outflow port through which water flows out, and a discharge port through which filtered matter is discharged, which is provided with a valve. Was provided with a cylindrical filter material sealed with a sealing material, and a brush in which spirally bristles were planted on a rod-shaped shaft arranged in the filter material, and a propeller was arranged on the water inlet side of the shaft. As a constitution, a filter device capable of sufficiently removing the filter cake accumulated on the filter medium and causing no decrease in the amount of water is realized.

A second means of the present invention is a cylindrical body in which both ends are sealed with a sealing material in an exterior main body having a water inlet and a water outlet and a discharge outlet for discharging a filter residue. A filter material, a wiper having an elastic body at one end arranged in the filter material, and a valve for selectively opening and closing the water inlet and the water outlet are provided to sufficiently remove the filter material accumulated on the filter material. It is possible to realize a filtration device that does not cause a decrease in water amount even when the flow rate is low.

Further, the third means of the present invention is to seal both ends with a sealing material in an exterior body having a water inlet and a water outlet and a discharge outlet for discharging a filter material provided with a valve. By providing a cylindrical filter medium and a wiper having an elastic body at one end arranged in the filter medium, it is possible to sufficiently remove the filter material accumulated on the filter medium and realize a filter device that does not cause a decrease in water amount. It is a thing.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing a second embodiment of the present invention.

[Explanation of symbols]

 1 Exterior Body 2 Inlet 3 Outlet 4 Discharge Port 5 Filtration Material 6 Sealant 7 Shaft 8 Brush 9 Propeller 10 Valve 11 Exterior Body 12 Inlet 13 Outlet 14 Discharge Port 15 Filter Material 15a Encapsulant 17 Elastic Body 16 Wiper 18 valve

Claims (3)

[Claims] 1. A cylinder whose both ends are sealed by a sealing material in an exterior body having an inflow port through which water flows in, an outflow port through which water flows out, and a discharge port through which a filter-equipped filter is discharged. A filtering device in which a shaped filter material and a brush in which hair is spirally planted on a rod-shaped shaft arranged in the filter material are provided, and a propeller is arranged on the water inlet side of the shaft. 2. A cylindrical filter medium having both ends sealed with a sealant in an exterior body having a water inlet and a water outlet and a discharge port for discharging a filter residue, and A filtering device provided with a wiper having an elastic body at one end thereof and a valve for selectively opening and closing a water inlet and a water outlet. 3. A cylindrical filter medium having both ends sealed with a sealant in an exterior body having a water inlet and a water outlet, and a discharge outlet for discharging a filter with a valve, A filtering device provided with a wiper having an elastic body at one end, which is disposed in a filtering medium.