JPH0310362B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a liquid purification device for removing impurities contained in liquids such as drinking water, alcohol, food oil, and machine oil.

(Prior Art) Conventionally, as this type of liquid purification device, one is known in which, for example, a linear filter element is wound around the outer peripheral surface of a cylindrical core body having a large number of through holes.

In other words, this type of liquid purification device mixes a filtration aid into a liquid containing impurities and circulates the mixture between a filter device and a tank.
A precoat is formed on the outer peripheral surface of the filter element. Impurities adhere to this precoat, which is further filtered and purified by passing through a filter element.

During filtration, impurities are layered on the outer peripheral surface of the precoated filter element to form a cake-like solid.

For this reason, after a certain period of use, this cake-like solid material can be removed by sending compressed air or the like from inside the cylindrical core (this is called backwashing), or it can be removed from the liquid and removed using a knife or the like. I try to scrape it off.

(Problem to be Solved by the Invention) However, the filter element is wound with minute intervals, and when it is assembled into a tank or scraped off with a knife to remove cake-like solids, it may be damaged. Because of this tendency, not only does the filtration accuracy tend to deteriorate, but also, when removing it, for example, in the case of backwashing, cake-like solids are difficult to remove, resulting in high costs. Further, when scraping off with a knife or the like, it is necessary to take great care to avoid scratching the filter element, which also poses problems such as high cost.

The purpose of the present invention is to improve the above-mentioned problems by protecting the filter element to prevent a decrease in filtration accuracy, making it possible to easily remove cake-like solids, and easily changing the timing for removing cake-like solids. To provide a liquid purification device that allows visual inspection.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention has a cylindrical core frame provided approximately in the center of a liquid purification device for removing minute impurities contained in a liquid. A filter device is provided in which a linear filter element is wrapped around the outer peripheral surface of the body, and a porous member having an appropriate distance between the outer peripheral surface of the linear filter element and the outer peripheral surface of the body is removably covered. Further, in the outer peripheral frame of the liquid purification device, at least a portion of a first outer peripheral frame portion corresponding to the filter device is made of a transparent member, and the outer peripheral frame in the vicinity of the transparent member is provided with the porous member. The liquid purification device is equipped with a color sample to help you know when to remove impurities attached to the liquid.

(Function) By adopting the present invention, when the filtration capacity of the filter device in a liquid purification device has decreased and it is time to replace it, the porous member detachably attached to the outer periphery of the filter element can be removed to remove the porous member. Impurities attached to the sexual member are easily and simply removed.

In addition, in order to know when the filtration ability of the filter device has decreased and the impurities adhering to the porous member should be removed, the first outer peripheral frame portion of the outer peripheral frame of the liquid purification device corresponding to the filter device is replaced with a transparent member. In addition, since a color sample was provided on the outer peripheral frame near the transparent member, it was confirmed from the outside that the color of the impurities that had been filtered and adhered to the porous member was almost the same color as the color sample. Impurities attached to the porous member can be removed by using the porous member.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

A liquid purification device is used to remove impurities contained in a liquid such as drinking water, alcohol, food oil, or machine oil. In this example, the liquid purification device is used to remove impurities contained in drinking water. This will be explained using a water purifier that removes impurities as an example.

Referring to FIGS. 1 and 2, a water purifier 1 as a liquid purification device includes an outer peripheral frame 3, a filter device 5 provided in the longitudinal direction in the center of the cheek in the outer peripheral frame 3, and an outer peripheral frame 3. It is composed of activated carbon 7 and the like provided in the lower part of the body 3 in the longitudinal direction.

The filter device 5 includes a winding core frame 11 on which filter elements 9 having a thickness of 30 to 50 μm are laminated on the outer circumferential surface, and a filtration aid 13 such as diatomaceous earth between the outer circumferential surface of the filter elements 9 and the outer circumferential surface of the filter elements 9. It is made up of a cylindrical net member 15 as a porous member that is enclosed and has small intervals. Pressing plates 17 and 19 for pressing the filter element 9 are attached to both ends of the winding core frame 11 at the upper and lower ends in FIG. 1, respectively.

A large number of through holes 11H (see FIG. 3) are bored in the outer peripheral side surface of the winding core frame 11. The filter element 9 is made by coating a wire with a suitable coating, then winding it around a core frame 11 in a coil shape and stacking it, and then dissolving and removing the coating to form minute gaps. .

As shown in FIG. 3, a hollow portion M is formed between the winding core frame 11 and the filter element 9, and the hollow portion M communicates with the through hole 11H.

The cylindrical mesh member 15 as a porous member is made of, for example, a wire mesh having small holes larger than the spacing between filter elements, and is adapted to allow water to flow through it by immersing it in drinking water. Moreover,
As described above, the filtration aid 13 such as diatomaceous earth is sealed inside the cylindrical mesh member 15 from the outside and is placed over the outer circumferential surface of the filter element 9 with a slight gap, for example. By flowing drinking water containing impurities such as iron oxide from the outside to the inside of the cylindrical net member 15, as shown in FIGS. 1 and 3, each of the filter aids 13 is removed. Block is filter element 9
They are attracted to the outer circumferential surface of the two and stick to each other in a bridge-like manner. Thus, a precoat P is formed on the outer peripheral surface of the filter element 9. (See FIG. 3) Therefore, impurities contained in the drinking water adhere to the precoat P, and are further filtered through the filter element 9, and the filtered water is passed through the through hole 11H to the winding core frame 11. and is discharged, for example, downwardly as shown in FIG.

In order to remove impurities attached to the net member 15, the net member 15 is removed from the filter element 9, for example. Further, if the impurities are not yet attached to the net member 15 to a large extent, it is also possible to carry out backwashing, which will be described in detail later.

The extent to which the filter aid 13 becomes ineffective due to the adhesion of impurities to the net member 15 varies depending on the quality of the drinking water, but can usually be used 5 to 10 times more than conventional filters. Note that since the net member 15 is simply mounted over the filter element 9, even an amateur can easily remove and replace it.

The outer circumferential frame 3 includes a first outer circumferential frame 21 that substantially corresponds to the filter device 5, and a second outer circumferential frame 23 that is detachable at the upper part of the first outer circumferential frame 21 and in FIG. The first outer peripheral frame 21 and the first
In the figure, the third outer peripheral frame body 25 is detachable at the lower part.
It is composed of.

The first outer peripheral frame 21 has a cylindrical shape, for example,
Moreover, it is made of a transparent material such as acrylic. By making the first outer peripheral frame 21 a transparent member, it is possible to see the state of impurity adhering to the net member 15 from the outside through the first outer peripheral frame 21 which is a transparent member.

In FIG. 1, the first outer circumferential frame 21 has a step cylindrical portion 21U having a step at its upper part, and a male thread 21S is carved on the outer periphery of the step cylindrical portion 21U. On the other hand, a female thread 23S is carved in a lower inner peripheral portion of the second outer peripheral frame 23 at a portion corresponding to the male thread 21S. Therefore, the first
The outer circumferential frame body 21 and the second outer circumferential frame body 23 can be freely attached and detached by screwing male screws 21S and female screws 23S together.

Further, in FIG. 1, the lower part of the first outer peripheral frame 21 is a step cylinder part 21D having a step, like the upper part, and the outer peripheral part of the step cylinder part 21D is
A male thread 21S is engraved. On the other hand, a female thread 25S is carved in the upper inner peripheral portion of the third outer peripheral frame 25 at a portion corresponding to the male thread 21S. The first outer circumferential frame 21 and the third outer circumferential frame 25 are detachable by screwing the male thread 21S and the female thread 25S.

Furthermore, between the lower part of the first outer peripheral frame 21 and the third outer peripheral frame 25, a cylindrical body 2 as a color sample is provided.
7 is interposed therebetween, and the inner peripheral portion of this cylindrical body 27 is also provided with a female thread 27S. Therefore, the male thread 21S of the first outer peripheral frame 21 and the female thread 2 of the cylindrical body 27
7S is screwed together and detachably attached.

The outer peripheral surface of the cylindrical body 27 as a color sample is painted or colored, for example, brown, that is, the iron oxide color of iron oxide, which is contained in a large amount among the impurities. Therefore, the color of the impurities attached to the net member 15 described above is, for example, the color of the cylindrical body 27 as a color sample.
Compare the color of iron oxide on the surface of the net member 15, determine that the color is almost the same, remove the net member 15 to remove impurities, or replace it with a new one.
The net member 15 can be used efficiently. Note that the colors of the surfaces of the net member 15 and the cylindrical body 27 are determined by looking from outside the first outer peripheral frame 21 of the transparent member described above.

Although the cylindrical body 27 serving as a color sample is provided at the lower part of the first outer peripheral frame 21, it may be provided at the upper part.

The surface color of the second outer circumferential frame 23 and the third outer circumferential frame 25 is, for example, black to give an aesthetic appearance, but it is not limited to black in particular.

Upper step cylinder part 21U in the first outer peripheral frame
For example, a black rubber packing 29 is attached to the groove of the second outer peripheral frame 23 in contact with the upper end of the second outer peripheral frame 23 to prevent water leakage.

A plurality of protrusions 31 protruding upward in FIG. 1 are integrally formed on the upper part of the second outer circumferential frame 23, and arm-shaped caps 33 are attached to the protrusions 31 for attachment and detachment. It's becoming possible. Inside the cap 33, there is a hollow cap plate 3.
5 is installed.

For example, a black rubber gasket 37 for preventing water leakage is attached to a stepped portion in the center of the upper plate 23P of the second outer peripheral frame 23.

For example, a chrome-plated annular faucet stopper 3 is provided on the upper plate 23P of the second outer peripheral frame 23.
9 is erected, and is attached to the water faucet H from the outside of the faucet stopper 39 with a plurality of screws 41. A second connection is made to the water faucet H via the faucet stopper 39.
When attaching the second outer frame 23, the cap 33 is removed from the second outer frame 23 and inserted into the water faucet H.

On the lower plate 21D of the first outer frame 21 between the outer circumference of the cylindrical body 19H of the presser plate 19 that presses the filter element 9 and the inner circumference of the lower part of the first outer frame 21. For example, a black rubber gasket 43 for preventing water leakage is attached to the housing.
Moreover, a male thread 19S is carved on the outer periphery of the body 19H of the holding plate 19, while a female thread 21S is carved on the inner periphery of the body of the lower plate 21D of the first outer peripheral frame 21. This male screw 1
9S and a female thread 21S are screwed together and can be attached and detached. Thus, the first outer peripheral frame 21 and the filter device 5 are removable.

The first outer frame 2 is located at the lower part of the third outer frame 25.
A groove is formed in the part where the lower end of 1 touches, and a black rubber gasket 4, for example, is inserted into the groove to prevent water leakage.
5 is installed.

The activated carbon 7 is removably attached to a stepped portion in the center of the third outer frame 25, which is detachably attached to the first outer frame 21. The activated carbon 7 is made of felt, for example, and is particularly effective in removing odor from water.

A protrusion 25T having a conical outer shape is integrally provided downward at the center of the lower end of the third outer peripheral frame 25 to allow filtered water to flow downward. There is.

Next, an example of how the water purifier 1 is used will be explained. The second outer peripheral frame 23 in the assembled water purifier 1
Remove the cap 33 from the cap 33 and insert the cap 33 into the water faucet H. Next, the water purifier 1 is attached to the water faucet H by attaching the second outer peripheral frame 23 to the water faucet H using a plurality of bolts 41 via the faucet stopper 39.

In this state, by turning a faucet (not shown), drinking water flows out from above in FIG. 1 into the space inside the water purifier 1 as indicated by the arrow. As shown by the arrow, the drinking water flowing into the space flows from the outer peripheral surface of the net member 15 of the filter device 5 to the winding core frame 11.
flows within. As a result, the filter aid 13 previously sealed in the space inside the water purifier 1 flows into the net member 15 together with the drinking water, is sealed between the filter element 9 and the mesh member 15, and the filter aid 13, the filter element 9, and the winding core frame 11 form a precoat P, and impurities contained in drinking water adhere to the net member 15 and are filtered. The filtered water flows downward inside the winding core frame 11, and the activated carbon 7 attached to the third outer peripheral frame 25 eliminates the odor, and water free of impurities and odor is distributed. It will be possible to use it.

The adhesion status of impurities on the net member 15 is as follows:
When viewed from the outside of the first outer peripheral frame 21 of the transparent member, the second outer peripheral The first outer peripheral frame 21 is removed from the frame 23. Furthermore, the mesh member 15 attached over the outer circumference of the filter element 9 can be easily removed and replaced with a new one, and the first outer frame 21 can be easily attached to the second outer frame 23. This allows the mesh member 15 to be replaced.

Further, when the net member 15 is still usable to remove impurities attached to the net member 15, the first outer peripheral frame 21 is removed from the second outer peripheral frame 23, and the first outer peripheral frame 21 is removed from the second outer peripheral frame 23. The third outer frame 25 is also removed from the outer frame 21, and the first outer frame 21 is turned upside down in FIG. 1 to replace the first outer frame 21 with the second outer frame 23. It is also possible to remove impurities adhering to the net member 15 by flowing water and backflowing the net member 15.

Furthermore, when the activated carbon 7 is to be replaced, the third outer peripheral frame 25 can be removed from the first outer peripheral frame 21 to easily and easily replace the activated carbon 7.

Note that the present invention is not limited to the embodiments described above, and can be implemented in other embodiments by making appropriate changes.

(Effects of the Invention) As can be understood from the description of the embodiments described above, according to the present invention, the filter element of the filter device provided in the liquid purification device has a porous structure in which a filtering aid is sealed in the outer periphery of the filter element. Since the member is detachably attached, if impurities adhere to the porous member and it no longer performs its filtration ability, the porous member can be removed from the filter element and replaced easily. be effective.

In addition, it was confirmed that the adhesion status of impurities on the porous member was almost the same as the color of the color sample provided near the first outer peripheral frame when the first outer peripheral frame was a transparent member. By looking from the outside, you can determine when to remove impurities attached to the porous member, and by removing the porous member from the filter device, even an amateur can easily and easily remove impurities in a short time. Can be removed.

Furthermore, by covering the outer periphery of the filter element with a porous member, the filtration function is several times greater than that of the conventional filter element.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view of a water purifier as a liquid purification device showing one embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1. FIG. 3 is an enlarged view of the portion shown by the arrow in FIG. [Explanation of symbols representing main parts of drawings], 1
... Water purifier, 3 ... Peripheral frame, 5 ... Filter device, 7 ... Activated carbon, 9 ... Filter element, 1
1... Winding core frame body, 13... Filter aid, 15...
Net member, 21...first outer peripheral frame, 23...second
outer circumferential frame body, 25... third outer circumferential frame body, H... water faucet.

Claims (1)

[Claims] 1. A linear filter element is wound around the outer peripheral surface of a cylindrical winding core frame provided approximately in the center of a liquid purification device for removing minute impurities contained in liquid. A filter device consisting of a linear filter element is provided, and a porous member having an appropriate interval is detachably attached to the outer circumferential surface of the linear filter element. At least a portion of the first outer peripheral frame portion corresponding to the device is made of a transparent member, and a color sample is provided on the outer peripheral frame near the transparent member for knowing when to remove impurities attached to the porous member. A liquid purification device comprising: 2. The outer circumferential frame is comprised of a first outer frame portion corresponding to a filter device, and second and third outer frame portions that are detachable above and below the first outer frame portion. A liquid purification device according to claim 1. 3. The liquid purification device according to claim 1, wherein the porous member is a net member.