JPH0663124U - Filtration device - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a filtration device capable of preventing retention of outside air in a hollow fiber module and performing safe and highly accurate filtration. [Structure] The water purifier 1 is an inlet 1 of the hollow fiber module 9.
The check valve 20 is arranged and installed in each of the supply pipeline 6 connected to the No. 5 side and the discharge pipeline 11 connected to the outflow port 17 side. Tap water is supplied from the supply pipeline 6 to each hollow fiber module 9, and from each hollow fiber module 9 to the discharge pipeline 1.
1, the impurities, miscellaneous bacteria, chlorine, etc. contained in the tap water are removed by the hollow fiber module 9, and precise filtration becomes possible. When the supply of tap water from the supply pipe 6 side is stopped, the check valve 20 acts to stop the circulation of tap water. At this time, the hollow fiber module 9 arranged between the two check valves 20 is filled with tap water, and the outside air enters the hollow fiber module to generate bacteria or the hollow fiber dries. Therefore, the problem of deterioration due to deterioration is prevented.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filtering device configured by using a hollow fiber module for filtering water, chemicals and the like.

Generally, there are various filter media such as cloth filters, activated carbon filters, and porous ceramics, which are housed inside a water purifier or the like and used for filtering. More recently, hollow fiber membranes, which are hollow fibers made of reverse osmosis membranes such as cellulose acetate and nylon membranes, have attracted attention as a filter medium. Hollow fibers that have already been formed by bundling these hollow fibers in a container The module is used in a folding device using artificial kidneys and a device for producing clean semiconductor water. That is, the hollow fiber module is configured by accommodating a bundle of hollow fibers in an airtight container, and the container has a filter fluid inflow port penetrating the outer surface part of the hollow fiber and an end part of the hollow fiber. A perforated outlet for the filtered fluid is formed. For example, in a folding device, blood flows into the container from the inlet of the hollow fiber module, and the blood solution permeates the outer surface of the bundle of hollow fibers and permeates into the inside of the hollow fibers. At this time, harmful substances in the blood, acetic acid, potassium, etc. are removed by the hollow membrane. The blood that has permeated into the inside of the hollow fiber and has been purified is discharged to the end of the hollow fiber, and is further discharged from the outlet to be returned to the body. Similarly, in semiconductor clean water production equipment, tap water, etc. is introduced into the container through the inlet of the hollow fiber module, impurities and alkali ions are removed by the bundle of hollow fibers, and pure water is extracted from the outlet. I try to take water.

[0003]

[Problems to be solved by the device]

 However, in the hollow fiber module, it is said that bacteria are likely to be generated in the hollow fiber module when it is used and then outside air enters the container, and the hollow fiber is easily deteriorated when it is dried by contact with air. . For this reason, in the folding device, this module is replaced after each folding. Also, in the semiconductor purified water manufacturing equipment, tap water is supplied from the inlet at a constant pressure so that water constantly circulates inside the hollow fiber module, and outside air may accumulate inside the module or the hollow fiber may dry. I was trying not to.

For these reasons, the hollow fiber module does not constantly circulate water, and is thus unsuitable for filter media for household water purifiers and experimental instruments in which water is intermittently used.

An object of the present invention is to provide a filtration device capable of preventing retention of outside air in a hollow fiber module and performing safe and highly accurate filtration.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is configured by accommodating a bundle of hollow fibers in an airtight container, penetrates an outer surface portion of the hollow fibers of the container, and introduces a filtered fluid into the container. And a hollow fiber module having an outlet for penetrating the hollow fiber end portion of the container to let the filtered fluid flow out of the container, and a filtered fluid that flows in from the supply side and the inlet of the hollow fiber module. And a supply pipeline connected to the hollow fiber module for supplying the filtered fluid to the hollow fiber module, and a check valve is provided in each of the supply pipeline and the discharge pipeline.

[0007]

[Action]

 According to the present invention, a check valve is provided in each of the supply pipeline connected to the inlet of the hollow fiber module and the discharge pipeline connected to the outlet. Therefore, by circulating the filtered fluid through the supply pipeline → the hollow fiber module → the discharge pipeline, the filtered fluid can be precisely filtered in the hollow fiber of the hollow fiber module, and the circulation of the fluid is stopped. In the above, in the hollow fiber module, the check valves provided at the front and the rear immediately stop the circulation, and the fluid can be retained in a state in which the fluid is filled. As a result, there is provided a filtration device capable of performing safe and highly accurate filtration without the outside air invading the hollow fiber module to generate bacteria and the hollow fiber from being dried and deteriorated. It becomes possible.

[0008]

【Example】

 1 to 7 relate to a water purifier using a filter device according to an embodiment of the present invention. FIG. 1 is an internal system diagram of the water purifier, FIG. 2 is a perspective view of the water purifier, and FIG. Fig. 4 is a perspective view showing a state in which the back lid is removed, Fig. 4 is a front view showing a state in which the front lid of the water purifier is removed, Fig. 5 is a perspective view of the hollow fiber module, and Fig. 6 is a sectional view taken along line AA in Fig. 5. 7 is a cross-sectional view of the check valve.

The water purifier 1 is installed in a kitchen, hospital, dining room, etc. at home, and is for filtering impurities such as impurities, germs, odors, and chlorine contained in tap water by filtering tap water. . The water purifier 1 is provided with a cubic housing case 2 as shown in FIG. 2, and a front lid and a back lid can be attached to the front side and the back side of the case 2, respectively. In the case 2, a board 5 that partitions the front side and the back side of the case 2 is arranged. At a side surface position of the case 2, a connection port 7 of the supply pipe line 6 connected to the faucet part of the water supply is provided. As shown in FIG. 4, the supply pipe 6 penetrates from the front side to the back side of the board 5 and is bifurcated on the back side. A branch hose 8 is connected to the tip of each of the bifurcated supply pipes 6, and the tip of the branch hose 8 is again connected to the hollow fiber module 9 shown in the through side 1 on the front side of the board 5. To be done.

On the other hand, the water inlet 10 of the water purifier 1 is provided on the upper surface of the case 2. The water supply port 10 is formed of a U-shaped pipe material and is rotatable in the direction of arrow B as shown in FIG. The water supply port 10 is connected to the discharge pipe line 11 in the case 2, and the discharge pipe line 11 is bifurcated toward the hollow fiber module 9 side on the back surface side of the board 5. That is, the discharge pipe line 11 is formed by connecting branch hose 12 to each of the bifurcated portions, and the branch hose 12 is penetrated from the back side of the board 5 to the front side of the hollow hose. It is connected to the module 9.

Two hollow fiber modules 9 are arranged on the front side of the board 5, and each hollow fiber module 9 has an elongated cylindrical shape as shown in FIG. The hollow fiber module 9 is configured by accommodating a bundle of hollow fibers 14 inside a cylindrical transparent plastic container 13. The hollow fiber 14 is formed by forming a tube of reverse osmosis membrane such as cellulose acetate or nylon membrane, and is arranged vertically along the inside of the elongated container 13 (see FIG. 6). Filtered fluid inlets 15 are formed at the upper side and the lower side of the cylindrical container 13, respectively. Each inflow port 15 is penetrated into the outer surface portion of the hollow fiber 14 in the container 13. The hollow fiber module 9 generally uses either the upper or lower inflow port 15 during use. A rubber cap 16 is attached to the inflow port 15 which is not used. Further, outlets 17 for the filtered fluid are formed at the central portions of the upper surface and the lower surface of the cylindrical container 13. Each outflow port 17 is penetrated into the end portion of the hollow fiber 14 in the container 13. Either one of the upper and lower outlets 17 is used at the time of use, and in the embodiment, the upper outlet 17 is used. A rubber cap 18 is attached to the lower outlet 17 which is not used.

In the container 13, the ends of the bundle-shaped hollow fibers 14 are converged by the O-ring 19. The O-ring 19 partitions and seals the end portion side of the hollow fiber 14 communicating with the outlet 17 in the container 13 and the outer surface side of the hollow fiber communicating with the inlet 15.

In each hollow fiber module 9 thus formed, the branch hose 8 of the supply line 6 is connected to the inflow port 15, and the branch hose 12 of the discharge line 11 is connected to the outflow port 17. It As a result, the circulation circuit of the water purifier 1 shown in FIG. 1 is formed inside the case 2.

A check valve 20 is provided at a bifurcated portion of the supply pipeline 6 and the discharge pipeline 11 as shown in FIG. Each check valve 20 is for preventing the reverse flow of the filtered fluid (tap water) flowing in the direction of the arrow in FIG. 1, and for ensuring the flow in the direction of the arrow in the circulation circuit. As the structure of the check valve 20, the structure shown in FIG. 7 is used. In the figure, 21 is a valve body and 22 is a spring. That is, the valve body 21 is normally closed and is opened against the biasing force of the spring 22 by the flow pressure of the filtered fluid.

In the water purifier 1 thus formed, tap water is first supplied from the connection port 7 to the supply pipeline 6, and the supplied tap water is branched to the branch hose 8 through the check valve 20. Be done. The branched tap water flows into the module 9 through the inflow port 15 of the hollow fiber module 9, and flows out from the outflow port 17 through the branch hose 12 to the discharge pipe line 11. In the hollow fiber module 9, the tap water introduced from the inflow port 15 is brought into contact with the outer surface of the bundle-shaped hollow fibers 14 and permeates into the hollow fibers 14. At this time, impurities, miscellaneous bacteria, odorous chlorine, etc. contained in the tap water are filtered by the hollow fiber 14. The purified tap water that has permeated the hollow fibers 14 flows through the inside of the tubular hollow fibers 14 toward the end side, and is discharged from the module 17 through the outlet 17 (see FIG. 6). ). The purified tap water discharged to the discharge conduit 11 side flows out of the water supply port 10 through the check valve 20.

When the supply of tap water from the connection port 7 is stopped, the flow of water in the circulation circuit shown in FIG. 1 is stopped. In this state, the valve body 21 of each check valve 20 is closed, and the reverse flow of tap water is stopped. Therefore, the circulation of each module 9 sandwiched between the two supply-side and discharge-side pipelines 6 and 11 is stopped while the inside is filled with tap water.

Next, the operation of the above embodiment will be described. According to the water conditioner 1 of the above-described embodiment, the supply pipeline 6 connected to the inlet 15 side of the hollow fiber module 9 and the discharge pipeline 11 connected to the outlet 17 side are respectively provided. The check valve 20 is provided. Therefore, by circulating the tap water from the supply pipe 6 to the hollow fiber module 9 to the discharge pipe 11, the hollow fiber 14 of the hollow fiber module 9 can precisely filter the tap water. Even when the circulation is stopped, the inside of the hollow fiber module 9 is immediately stopped by the check valve 20 arranged before and after, and the module 9 is filled with tap water. Therefore, the outside air does not enter the hollow fiber module 9 to generate bacteria and the hollow fiber 14 does not dry and deteriorate, and a filter device capable of performing safe and highly accurate filtration is provided. It becomes possible to do it.

In the above embodiment, the check valve has the structure shown in FIG. 7, but a check valve such as an electromagnetic valve or an actuator may be used to mechanically block the flow of tap water. Further, although the water purifier for purifying tap water is used in the present embodiment, the present invention can also be adopted in a filtering device for separating components such as chemicals and foods.

As described above, according to the present invention, there is an effect that it is possible to provide a filtration device capable of performing safe and highly accurate filtration.

[Brief description of drawings]

FIG. 1 is an internal system diagram of a water purifier according to an embodiment of the present invention.

FIG. 2 is a perspective view of a water purifier.

FIG. 3 is a perspective view showing a state where a back cover of the water purifier is removed.

FIG. 4 is a front view showing a state in which a front cover of the water purifier is removed.

FIG. 5 is a perspective view of a hollow fiber module.

6 is a cross-sectional view taken along the line AA of FIG.

FIG. 7 is a sectional view of a check valve.

[Explanation of symbols]

 1 Water Purifier (Filtration Device) 6 Supply Pipeline 9 Hollow Fiber Module 11 Discharge Pipeline 13 Container 14 Hollow Fiber 15 Inlet 17 Outlet 20 Check Valve

Claims (1)

[Scope of utility model registration request] 1. An inflow port configured to accommodate a bundle of hollow fibers in an airtight container, penetrated into an outer surface of the hollow fibers of the container, and into which a filtered fluid flows into the container, and a hollow fiber of the container. An outlet that is pierced in the end portion and flows the filtered fluid out of the container,
A hollow fiber module provided with, a supply line for injecting a filtered fluid from a supply side and connected to an inlet of the hollow fiber module to supply the filtered fluid to the hollow fiber module, and an outlet of the hollow fiber module. A filtering device, which is connected to and discharges a filtered fluid, wherein a check valve is provided in each of the supply conduit and the discharging conduit.