JPH09187761A - Water purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a water purifier with a structure wherein a prefilter for removing impurities such as solids and insoluble matters in water and a filter medium for purification of water are separated. SOLUTION: This water purifier comprises a double cylinder-type casing, a water conveyance hole 3 for guiding water to the bottom part of an inner cylinder, an drainage hole 6 for draining water on the bottom part of the outer cylinder, a top lid 9 set on a the top part of the casing so as to form a space and pref., with a funnel-like shape, a filter medium filled in the outer cylinder, a cylindrical prefilter 10 inserted from the top part of the inner cylinder and a base supporter 11 for supporting the prefilter 10 and a through-path 12 through which water from the prefilter 10 passes is formed in the base supporter 11 and the base supporter 11 is mounted watertightly and freely removably on the lowermost part of the top lid 9 so as to arrange the outlet of water of the through-path 12 in the space part (a) formed on the top part of the casing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifier for tap water, and more particularly, to a pre-filter for removing impurities such as solid insolubles in water and a filter medium for purifying water. The present invention relates to a water purifier having a separated structure.

[0002]

2. Description of the Related Art In recent years, water purifiers for tap water in particular have been widely used. However, as the filtration function is improved, clogging tends to occur due to solid components such as red rust in a water pipe. There is. Therefore, a prefilter that filters out solid components in tap water is used as a water purification filter (usually a cartridge).
And a method of preventing clogging of the purified water filter material by replacing the pre-filter with a new one when the pre-filter is clogged. This pre-filter is usually easy to replace and low in price compared to the water purification filter medium, so that it is effective even in areas and seasons where the water quality is relatively poor.

[0003]

A conventional water purifier using two filter media, a prefilter and a water purification media cartridge, has a structure in which the filtration media are arranged side by side, or the prefilter has a water purifier body. However, the size of the entire water purifier is increased, and piping between the filter media is also required, resulting in a complicated overall structure. Other water purifiers have a pre-filter attached to the raw water introduction hose separately from the water purification cartridge in the cylindrical casing. When you think about it, it becomes a very disturbing structure.

When the pre-filter is clogged, it needs to be replaced, but the water inside the water purifier often overflows each time it is replaced, and the overflowed water is, for example, a case and a filter medium cartridge. It could flow into the hard-to-reach areas between the hands, causing mold and stains. That is, when the pre-filter is pulled out and replaced, water overflows from the inside of the pre-filter, and when a new pre-filter is attached, the inner water is pushed out by a blind plug at the tip of the pre-filter. There was a drawback.

The present invention has been made in view of the above drawbacks of conventional water purifiers, and includes a prefilter for removing impurities such as solid insolubles in water, and a water purification filter for water purification. It is intended to provide a water purifier having a structure in which water is prevented from overflowing even when it is separated and the prefilter is pulled out or attached.

[0006]

The present invention has the following constitution in order to achieve the above object. That is, a double cylindrical casing that forms the body of the water purifier, a water guide port that guides water to the bottom of the inner cylinder, a discharge port that discharges water to the bottom of the outer cylinder, and a space formed at the top of the casing. A funnel-shaped upper lid, a filter medium filled in the outer cylinder, a cylindrical prefilter inserted from the upper part of the inner cylinder, and a base supporter supporting the prefilter, A water purifier consisting of
A through passage through which water from the prefilter passes is formed in the base support, and the base is so arranged that the water outlet of the through passage is arranged in a space formed at the top of the casing.
The supporter is watertightly and detachably attached to the lowest portion of the upper lid.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The flow of water will be explained with a preferred example of the water purifier of the present invention. Water flows toward it. At this time, solid components such as red rust in tap water are filtered by a prefilter. After that, the water passes through the through passage of the base supporter provided on the upper part of the pre-filter and flows out into the space formed by the upper lid. Then, this water then flows in from the upper part of the outer cylinder, is purified by the filter medium filled therein, and the purified water can be taken out from the outlet port at the bottom of the outer cylinder.

When the pre-filter is replaced, the base support is removed by pulling it upward from the lowermost portion of the upper lid, but since this upper lid has a funnel shape, it is removed at the same time as it is pulled out. The overflowing water cannot flow out elsewhere.

Since the filter medium filters impurities and harmful ions in water, chlorine odors, trihalomethanes, mold odors, various bacteria, etc.,
It is preferable that activated carbon, barley stone, etc. are put in a mesh bag to form a cartridge. Also, as an example of the pre-filter,
There are granular ceramics, non-woven fabrics, etc.

In the present invention, the entire water purifier is downsized, but conversely, it is possible to increase the amount of the filter medium such as activated carbon by that amount, which is hygienic and small. It is now possible to construct a water purifier that exerts its functions.

[0011]

1 is an exploded view showing a preferred example of the water purifier of the present invention, and FIG. 2 is a vertical sectional view of the water purifier. FIG. 3 is an enlarged perspective view showing the prefilter. That is, the casing 1 constituting the main body of the water purifier is a double cylindrical casing having an inner cylinder 2 at the center and divided inside, and a tap water inlet 3 is provided at the bottom of the inner cylinder 2. And a tap water introduction hose 4 is connected. On the other hand, a lead-out port 6 is formed at the bottom of the annular outer cylinder 5 surrounding the inner cylinder 2, and a lead-out hole is formed in this.
The space 7 is connected. A filter material 8 such as activated carbon packed in a mesh bag is stored in the outer cylinder 5. The upper part of the tubular casing 1 is watertightly closed while forming a space portion a with an upper lid 9 preferably formed in a funnel shape, and the space portion a serves as a water flow path. In addition, a prefilter 10 made by rolling polypropylene non-woven fabric into a cylindrical shape is housed in the inner cylinder 2, and a base supporter 11 is provided on the top of the cylindrical prefilter 10. It is fitted and has a through passage 12 formed therein as a flow passage for water. Incidentally, 8 ₁ is a lid with a slit to cover the filter medium 8.

The base supporter 11 is inserted into a hole provided in the lowest central portion of the funnel-shaped upper lid 9 described above. And the through passage 1 formed in the base supporter 11.
The outlets 2 are disposed below the upper lid 9, that is, in the space a surrounded by the upper lid 9 and the tubular casing 1, and both are detachably mounted. In the figure, 13 is a base cover, and 14 is a cover cover that covers the upper lid 9. Also, 15
Is a packing for ensuring water tightness.
Is a retaining plug which is fitted to the lower end of the prefilter.
Incidentally, mounting screws and the like are omitted in the drawing.

The funnel-shaped upper lid 9 is welded to the double cylindrical casing 1, and the base supporter 11 is detachably attached to the upper lid 9 as described above. A protrusion 17 is formed on the base supporter 11 side, and a groove 18 is cut on the inner surface of the hole of the upper lid 9, and the groove 18 is formed.
It is mounted by fitting the projection 17 therein and twisting the projection 17 in either the left or right direction. Of course, the base supporter 11 can be removed by twisting it in the opposite direction. In the figure, reference numeral 19 is a knob for the work of the base supporter 11.

The flow of water will be explained again. The arrows in the figure show the flow of water, and tap water is the ho
The pre-filter 10 which is set in the cylinder 2 by reaching the inlet 3 provided at the bottom of the cylinder 2 by the spout 4.
Flows into the air space formed inside the pre-filter 10 from around and the solid matter in water is removed by the pre-filter. Then, the water ascends in this space and reaches the space portion a through the inside of the through passage 12 formed in the base supporter 11. Then, it flows in from above the outer cylinder 5,
Here, the filter medium 8 purifies odors and harmful ions,
Finally, it flows out from the outlet 6 formed at the bottom of the outer cylinder 5 and is supplied to drinking water via the hose 7.

When replacing the pre-filter 10, the upper lid 9 is unmounted and pulled out upward, but since the upper lid 9 is formed in a funnel shape, it overflows at the same time as the pulling operation. The water that comes out stays in this funnel and does not flow out. Further, even when the inner water is pushed by the blind plug and overflows when the pre-filter is inserted, the water does not flow out from this because the upper lid 9 has a funnel shape.

[0016]

According to the present invention, in order to solve the problem that the structure of the whole water purifier becomes large and complicated, a pre-filter and a purification filter material are provided in a double cylindrical casing which constitutes the main body of the water purifier. The pre-filters are built-in separately, and the pre-filter can be freely attached and removed, and at the same time, splashing of water at the time of attachment and detachment can be prevented.

[Brief description of the drawings]

FIG. 1 is an exploded view showing a preferred example of a water purifier of the present invention.

FIG. 2 is a vertical cross-sectional view of the water purifier of FIG.

FIG. 3 is an enlarged perspective view showing a pre-filter.

[Explanation of symbols]

 a: space, 1 ... casing forming the main body of the water purifier, 2 ... inner casing of casing, 3 ... tap water inlet provided at bottom of inner casing, 4 ... water supply Water inlet hose, 5 ... Outer casing of casing, 6 ... Tap water outlet provided at the bottom of the outer casing, 7 ... Outlet hose, 8 ... Stored in the outer casing Filter material, 9 ... Funnel-shaped upper lid, 10 ... Cylindrical pre-filter, 11 ... Base support, 12 ... Through-passage provided in base support, 13 ... Scover, 14 ... Case cover, 15 ... Packing, 16 ... Blind plug, 17 ... Protrusion formed on the base support, 18 ... Groove on inner surface of hole in upper lid, 19 ... -Supporter knob.

Claims (2)

[Claims] 1. A double cylindrical casing which constitutes the body of the water purifier, a water guide port for introducing water to the bottom of the inner cylinder, a discharge port for discharging water to the bottom of the outer cylinder, and a space formed on the top of the casing. Water purifier including an upper lid provided with the filter, a filter medium filled in the outer cylinder, a cylindrical prefilter inserted from the upper part of the inner cylinder, and a base supporter supporting the prefilter. The base support has a through-passage through which water from the prefilter passes, and the water outlet of the through-passage is arranged in a space formed at the top of the casing. A water purifier characterized in that a base support is attached to the lowermost portion of the upper lid in a watertight manner and detachably. 2. The water purifier according to claim 1, wherein the upper lid has a funnel shape.