JPH11104625A - Water purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To drain the water accumulated in a water purifier by setting a drain valve disc in the hose connected to the water discharge part taking out the water purified by the purifying filter material in an outer cylinder. SOLUTION: When tap water is allowed to flow in a water purifier, the interior of the water purifier is held to a pressurized state by water pressure and both of an air intake valve 20 and a residual water drain valve 30 are cut off so as to be isolated from the communication with the outside. Therefore, tap water is treated according to the regular route in the water purifier to be supplied. When the supply of tap water to the water purifier is cut off, water pressure is not applied to the interior of the water purifier and, therefore, both of the air intake valve 20 and the residual water drain valve 30 are opened to communicate with the outside. Herein, the whole of the water in the water purifier flows out of the residual water drain valve 30 and, since no water remains in the water purifier, the propagation of bacteria or the like in the water purifier is not generated.

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.

[0002]

2. Description of the Related Art In recent years, there has been an increasing demand for safety for drinking water, and water purifiers for purifying tap water have been used. In such a water purifier, a pre-filter
Water purifiers that use both water and filter media are particularly effective, and are widely used in areas and seasons with relatively poor water quality. In such a water purifier, a pre-filter is provided in front of a water purification filter medium, a solid component in tap water is filtered off by the pre-filter, and then a purification method is performed by a water purification filter medium.
When the eyes of the pre-filter become clogged, the pre-filter is replaced with a new one.

As described above, many water purifiers have an excellent water purifying function. However, as the filtering function is improved, the solid content in tap water is retained inside the water purifier by the filter effect of the water purifier. If such water stays in the water purifier, it becomes a suitable place for bacteria entering the water purifier for some reason. That is, since tap water has passed through activated carbon and the like, chlorine and the like that have a bactericidal action have been removed from the beginning, and if water is left in a water purifier for a long period of time, bacteria will easily propagate, Better performance results in increased bacterial growth.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks of the conventional water purifier, and particularly has a structure for draining water remaining in the water purifier.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its gist is to provide an outer cylinder, an inner cylinder erected inside the outer cylinder, and an inner cylinder. In addition, a prefilter, a purification filter material filled between the outer cylinder and the inner cylinder, a water inlet at the bottom of the inner cylinder, and a water outlet at the bottom of the outer cylinder are provided, and water flows from a hose connected to the water inlet. The dust flows into the cylinder, dust is filtered by the pre-filter, flows into the upper part of the outer cylinder from the upper part of the inner cylinder, and the water purified by the purification filter material in the outer cylinder is connected to the water outlet. A water purifier taken out of
The present invention relates to a water purifier characterized in that a drain valve is incorporated in the water purifier.

[0006] It is preferable that a drain valve is incorporated in each of the inlet and outlet hoses, and that an antibacterial air filtration membrane is incorporated. Such a drain valve is closed when the internal water pressure of the water purifier is large, and makes a seal with the outside.
When the internal water pressure decreases, it opens to drain the residual water inside the water purifier.

It is preferable to provide an air intake valve at the upper part of the water purifier together with the water drain valve. When the internal water pressure of the water purifier is high, the air intake valve is closed to form a seal with the outside. When it is reduced, it is designed to open and take in outside air into the water purifier.

Further, as a specific example of the present invention, there are provided an outer cylinder of a housing, an outer cylinder which is accommodated in the outer can of the housing, and has a water inlet and a water outlet at a bottom portion thereof, A purifying filter material filled between the outer cylinder and the inner cylinder, an outer cylinder cap for closing an upper edge of the outer cylinder, a cylindrical pre-filter cartridge inserted into the inner cylinder from above, Pre-filter-Pre-filter inserted in the cartridge
A pre-filter cartridge cap for closing the upper part of the pre-filter cartridge, and a portion located below the outer cylinder cap when the pre-filter cartridge cap is attached to the outer cylinder cap. A water inlet is formed, and a housing cap fitted to the upper part of the housing outer can, a base fitted to the lower part of the housing outer can to support the outer cylinder, and an outer cylinder inserted into the base. What is claimed is: 1. A water purifier having a water inlet and a water outlet communicating with a water outlet and a water outlet, comprising a pre-filter cartridge cap having an air intake valve body and a pair of hoses connected to the water inlet and the water outlet. The present invention provides a water purifier provided with a drain valve body and preferably an antibacterial outside air filtration membrane.

Of course, the air intake valve body is closed when the internal water pressure of the cartridge is high and sealed with the outside, and is opened when the internal water pressure is reduced to take in external air into the cartridge. On the other hand, the drain valve is closed when the internal water pressure of the cartridge is high and sealed to the outside, and opened when the internal water pressure is reduced to drain the residual water inside the water purifier. It was done.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on specific examples of the above-described water purifier of the present invention. First, the flow of water in the water purifier will be described. A hose connected to a tap of a water supply enters a base water inlet, and then enters an inner cylinder through a water inlet of an outer cylinder. Then, the dust enters the cartridge, where the dust is removed by the pre-filter, and then flows into the upper end of the outer cylinder from the water inlet of the cartridge cap, and passes through the inside of the purification filter material such as activated carbon from top to bottom. Then, harmful substances such as chlorine, trihalomethane, and 2MIB are removed, and the water flows out of a hose connected to a water outlet from a water outlet formed at the bottom of the outer cylinder, and is taken out and provided for a beverage or the like.

In such a water purifier, when a faucet directly connected to the water purifier by a hose is opened and water passes through the inside of the water purifier, a pressure equal to the water pressure of the tap water is applied. Since it acts uniformly inside the water purifier, both the air intake valve body and the water drain valve body are closed, and the water tightness of the water flow path of the water purifier is guaranteed. On the other hand, when the faucet is closed and the tap water pressure applied to the water purifier disappears, the air intake valve automatically opens, and external air is taken into the cartridge. For this reason, the drain valve body is automatically opened, and the accumulated water inside the water purifier is discharged. For this reason, there is no residual water in the water purifier, and the growth of bacteria and the like can be prevented.

In particular, in a two-way water purifier, it is preferable to drain water from both the water inlet side and the water outlet side. This is because it is difficult to drain water from one drain valve because the inner cylinder and the outer cylinder of the pre-filter part are separated.
It is good to equip both of them with a drain valve body. In addition, it is good to have an antibacterial outside air filtration membrane in order to prevent invasion of bacteria in the air from the air intake valve body and the drain valve body.
It is preferable to use an antibacterial wire mesh supporting titanium oxide or the like.

In the above-mentioned water purifier, the pre-filter and the purification filter material are used separately, but the water purifier is reduced in size by being efficiently housed in one housing. And the pre-filter is getting clogged,
When the flow rate of the purified water decreases, the knob provided on the upper portion of the cartridge cap is rotated, and the cartridge can be taken out together with the pre-filter by pulling out the knob. If a check valve is provided at the bottom of the cartridge, the check valve operates to prevent the water inside the cartridge from leaking. In addition, it is preferable that a peripheral groove is formed around the cartridge cap on the outer cylinder cap that supports the cartridge cap, so that when the cartridge is taken out or a new pre-filter is mounted. The generated overflow is received by the circumferential groove, and the overflow can be prevented from flowing into, for example, between the outer can and the outer cylinder.

In the base supporting the lower end of the outer cylinder, the water inlet and the water outlet are formed corresponding to the water inlet and the water outlet provided at the bottom of the outer cylinder. It is preferable that the inlet channel and the outlet channel are juxtaposed for the same method. This is advantageous in terms of hose piping and maintenance.

The purifying filter medium is filled with activated carbon, barley stone and the like in order to filter impurities, harmful ions, chlorine odor, trihalomethane, moldy odor, various germs and the like in the water.
On the other hand, a hollow fiber membrane, polyurethane foam, or the like is used as the prefilter.

[0016]

The present invention will be further described with reference to the following examples. FIG. 1 is a diagram centering on the flow of water showing the concept of the water purifier of the present invention. a is an outer cylinder, an inner cylinder b standing upright in the outer cylinder a, a prefilter c made of urethane foam in the inner cylinder b, and a purification filled between the outer cylinder a and the inner cylinder b. Filter material d
And a water inlet f at the bottom of the inner cylinder b and a water outlet f at the bottom of the outer cylinder a.
Water is supplied from the hose g connected to the water inlet e.
, And dust is filtered by the pre-filter-c.
A water purifier that flows into the upper part of the outer cylinder a from the upper part of the inner cylinder b, and the water purified by the purification filter medium d in the outer cylinder a is taken out from the hose h connected to the water outlet f; -Sg, h
And a built-in drain valve i and an antibacterial outside air filtration membrane j, and further provided with an air intake valve k.

When the internal water pressure of the water purifier is high, that is, when tap water pressure is applied, the water drain valve i is closed to make a seal with the outside, and the faucet of the water tap is closed. When the internal water pressure of the water purifier decreases, the valve body i opens to drain the residual water inside the water purifier. The air intake valve body k closes when the internal water pressure of the water purifier is high. It is designed to be closed to the outside and open when the internal water pressure is reduced to take in outside air into the water purifier.

For this reason, when tap water is supplied into the water purifier, the drain valve i and the air intake valve k are cut off from the outside air, and the water is supplied from the inlet hose g. The water is purified and taken out from the outlet hose h. However, when tap water is not supplied to the water purifier, the drain valve i and the air intake valve k are respectively opened, and air enters through the air intake valve k placed at the top of the water purifier.
On the other hand, water in the water purifier is discharged from both the water inlet hose g and the water outlet hose h, thereby preventing the growth of bacteria in the water purifier.

FIG. 2 is a longitudinal sectional view showing a preferred example of the water purifier of the present invention. In the figure, reference numeral 1 denotes a cylindrical housing can body, the upper end has a slightly constricted 1 ₁ inside, the male screw 1 ₂ are engraved on the outer peripheral side. And in which the outer tube 2 to clean the filter medium is housed in the neck portion 1 ₁ is fitted. This is the bottom 2 ₁ of the outer cylinder 2 and the water outlet 2 ₃ is formed on its outer peripheral water inlet 2 ₂ in the center, the water inlet 2 ₂
Around the circumference flange 2 ₄ has drifted up. And the car
In which the inner cylinder 3 to pay cartridge 10 the lower end 3 ₁ is fitted into and erected on the circumferential flange 2 ₄ surrounding the entering-water outlet 2 _2. The purification filter medium for example fibrous activated carbon ₇₁ between the inner tube 3 and outer tube 2, granular activated carbon 7 _2, sintered filters -7 ₃ or the like is to be incorporated nails in layers.

[0020] Ca - prefilter -10 ₀ incorporated in cartridge 10, such as urethane follower - a cylindrical prefilter -10 ₀ made arm, mosquitoes in this state - cartridge 1
It is inserted into the 0, blind plugs 10, which is engaged by pawl 10 _2
3 the lowermost end 10 ₀₁ of the prefilter -10 ₀ is fitted is in fixed. The cartridge 10 is located at the lowermost end 1.
0 ₄ is intended to be Tate設fitted to the water inlet 2 _2. In the figure, ₁₀₅ is a check valve, force - in which water cartridge 10 is prevented from flowing back.

[0021] On the other hand, mosquitoes - cartridge cap 10 ₁ month -
Together are fitted to the upper end of the cartridge 10, the tip 10 ₁₁ is attached is fitted to the inner surface of the prefilter -10 _0, obtained by forming a passage Mizuguchi 10 ₁₂ laterally intermediate portion, the passage Minakuchi 10 ₁₂ months - cartridge cap 10 ₁ is positioned on the lower side of the outer cylinder cap 4 in a state of being incorporated completely fitted into the outer cylinder cap 4. Therefore, the water that has passed through the prefilter -10 ₀ Ca - cartridge reaches the cap 10 _1, thus leading to the purification medium within the outer tube 2 further through the passage Mizuguchi 10 _12. Note that the cartridge 10
And Ca - between the cartridge cap 10 ₁ O- ring ₈₁ the inner cylinder 3 and the outer cylinder cap 4 fitted sheet - le is completed.

[0022] Then, the characteristic force - cartridge be those provided with the air intake valve 20 to be described later in the center of the cap 10 _1, such an air intake valve 20, force - when the internal pressure of the cartridge 10 is large The cartridge is closed to form a seal with the outside, and when the internal water pressure decreases, it opens to take in outside air into the cartridge 10.

[0023] The upper edge of the outer cylinder 1 is fixed by recess 4 ₂ of the outer peripheral edge 4 ₁ of the outer cylinder cap 4 is fitted to weld this site, the outer cylinder cap 4遊口in central 4 ₃ and a female screw 4 surrounding the play hole 4 _3.
4 be one flange 4 ₅ which has been engraved is formed, the outer peripheral edge 4 ₁ of the flange 4 ₅ and the outer cylinder cap 4
It is obtained by forming a circumferential groove 4 ₆ between. The flange 4 ₅ female thread 4 ₄ was engraved on the Ca - cartridge cap 10
It is intended to be subjected to screwing between _1, whereas the flanges 4 ₅ circumferential grooves 4 ₆ surrounding the mosquitoes - is a cartridge cap 10 _first withdrawal and overflow during mounting intended to collect here.

[0024] Ca - on the outer periphery of the cartridge cap 10 ₁ has a male thread 10 ₁₃ to be screwed with the female thread 4 ₄ of the outer cylinder cap 4 is engraved, both are detachable. And this force - cartridge cap 10 ₁ prefilter -10 ₀
Becomes regularly removed it in order to exchange, this has knob 10 ₁₄ attached to the upper for occupying become feces removal, off the outer cylinder cap 4 by rotating picking it, or outer It will be screwed to the cylinder cap 4. Then, the user grips the knob 10 _{14 with} his / her finger and lifts the cartridge 10 to move the cartridge 10 into the inner cylinder 3.
This makes it easier to pull out.

[0025] Incidentally, the inner cylinder 3 and the force - cartridge 10 and the outer cylinder cap 4 and Ca - contact surface with the cartridge cap 10 ₁ is watertight - must be Le, usually with O- rings 8 ₁ Is sealed. The O- to a predetermined surface of the inner cylinder cap 5 for the ring ₈₁ of the housing O- ring groove ₈₂ is formed. And these mosquitoes - cartridge cap 10 ₁ and the housing cap 1 ₀ over the outer cylinder cap 3 is protecting the top screwed on the male screw 1 _second housing can 1.

On the other hand, a base 6 is provided at the lower end of the housing can 1.
Have been fitted, the base - annular cushion rubber ₆₁ on the back side of the scan 6 is adhered. And this base 6
In is water channel 6 ₃ incoming and outgoing water path 6 ₂ is matched to the outer cylinder 2 of the bottom surface 2 ₁ a provided water inlet 2 ₂ and the water outlet 2 ₃ is formed, in which fitting them watertight. The watertight sheet - the water inlet 2 ₁ and the outer periphery side of the water outlet 2 ₂ O- ring groove ₈₂ is formed for Le, here O- ring ₈₁ is fitted in - will be Le . And waterways incoming and outgoing waterway 6 ₂ 6
_The pipes ₃ are preferably arranged side by side in the same direction, and nipples 6 ₄ and 6 ₅ for pipes are screwed to this end. Incidentally, although not shown the water side of the nipple 6 ₅ in the housing can 1 to the band and A - discharge pipe is supported by arm or the like may be set.

[0027] Then, nipple 6 _4, 6 ₅ linked water inlet E to - scan 6 _41, Izumi E - The scan 6 ₅₁ are those having a drain valve body 30 to which is also described later, the drain valve Body 30
When the internal water pressure of the cartridge 10 is high, the cartridge is closed to seal the outside, and when the internal water pressure is reduced, the cartridge 10 is opened to drain the residual water inside. In FIG. 1, base - entering waterways 6 ₂ and out waterway 6 ₃ of the scan 6 was abbreviated as clarity.

[0028] To describe here the flow of water specifically, tap water entering water ho - scan 6 ₄₁ than the nipple 6 ₄ Karabe - formed scan 6 a enters the inlet water channel 6 _2, the outer cylinder 2 bottom 2 entering into the inner cylinder 3 from the water inlet 2 ₂ formed in the center of _one. Then, the water that has reached the inner cylinder 3 is solid and protozoa, such as dust by flowing through the inside of the prefilter -10 ₀ from the outer peripheral surface of the prefilter -10 ₀ are captured, further force - the cartridge cap 10 ₁ The water inlet 1 arranged at right angles to this
It passes through 0 ₁₂ and reaches the purification filter medium in the outer cylinder 2. Then, water is purified by passing through the purification filter medium, and the bottom portion 2 of the outer cylinder 2 is removed.
₁ to form the water outlet 2 ₃ and base - water outlet passage 6 in the scan 6
₃ through to reach the nipple 6 _5, finally flooding e - scan 6 ₅₁
Water will be supplied more.

As described above, when the tap water is flowing through the water purifier, the water purifier is pressurized by the water pressure, and both the air intake valve 20 and the drain valve 30 are disposed. It is cut off so that communication with the outside is cut off. For this reason, the tap water is treated and supplied according to the route in the water purifier.

On the other hand, when the supply of tap water to the water purifier is interrupted, the water pressure is not applied to the water purifier, so that the air intake valve 20 and the water drain valve body 30 are released. Be able to communicate with the outside world. Here, all the water in the water purifier flows out from the drain valve body 30, and therefore, no water remains in the water purifier. Therefore, the growth of bacteria and the like in the water purifier may occur. It will not be seen.

[0031] Incidentally, speaking for withdrawal of the prefilter -10 _0, mosquitoes with detached housing cap 1 ₀ - releasing the screws ₄ 4, 5 ₃ screwed to rotate with a cartridge knob 10 ₁₄ of the cap 10 _1, Then pick 1
0 ₁₄ Put finger force - the cartridge cap 10 ₁ month - cartridge 10 together pulling force - is intended to replace the pre-filter -10 ₀ cartridge 10. At this time, force - the check valve ₁₀₅ so that no water cartridge 10 from flowing back into the inner cylinder 3 is good to have provided.

Next, each member constituting the water purifier of the present invention will be described. FIG. 3 is a plan view of the outer cylinder 2.
The bottom 2 _first center water inlet 2 ₂ and water outlet on its outer periphery 2
₃ is formed, a number of projections from the bottom 2 ₁ inside 2
₅ is erected to support the filter media. 2 ₄ is a circumferential flange, so that the inner cylinder 3 is intertwined with upright fitted thereto.

FIG. 4 is a plan view of the outer cylinder cap 4, mosquitoes in the center -遊口4 ₃ cartridge cap 10 ₁ is fitted is formed, is formed a flange 4 ₅ further surrounds it. And, this is between the flange 4 ₅ and the outer peripheral edge 4 ₁ circumferential groove 4 ₆ are formed, are supposed to collect overflowing water here.

[0034] Figure 5 is Ca - cartridge is a plan view of the cap 10 _1, FIG. 6 is a horizontal sectional view of passing Mizuguchi 10 _12. As knob 10 ₁₄ seen also in FIG. 2 and FIG. 5 is formed in a bridge shape having a constant width, out to put their fingers inside the bridge-shaped, mosquitoes with this - cartridge 10 easily pulled out that Can be done. Incidentally, Ca - cartridge cap 10 ₁ outer cylinder cap 4 the outer tube 2 by pulling over the fingers remain knob 10 ₁₄ was screwed to the base - that can be extracted from the scan 6 easily as a matter of course. In addition, the water inlet 10 _{12 with} four pieces 10 ₁₅
Are formed over a substrate, simply be those opened laterally holes as passage Mizuguchi 10 _12. Mosquito The presence of this passage Mizuguchi 10 ₁₂ - water through the cartridge cap 10 within ₁ reoriented by the passing Mizuguchi 10 _12, so that flow over the clean filter media filled in the outer tube 2 (arrow) .

[0035] Figure 7 months - a cross-sectional view of a cartridge cap 10 _first central portion air intake valve 20 provided in the cut-off port 20 ₃ and the idler to the flange 20 ₁ of the cylindrical housing 20 ₂ provided in the outer periphery ball - are those having a le 20 _4. The floating ball - le 20 _4, Ca - cartridge cutoff port 20 by moving the cutoff port 20 ₃ side when the internal pressure is large
₃ forms a seal with the outside closed, when the internal pressure is reduced in the outside air away from the cut-off port 20 _three - is obtained by a structure incorporated in the cartridge. Note that reference numeral 20 ₅
Is an antibacterial wire mesh that prevents bacteria from entering the atmosphere.

[0036] Figure 8 is a plan view of the housing cap 1 _0, 1 ₀₁ is a handle with a central, is subjected to removal.

FIG. 9 is a plan view of the base, FIG. 10 is a side view thereof, FIG. 11 is a rear view, FIG. 12 is a sectional view taken along line AA of FIG. 9, and FIG. It is sectional drawing in the -B line. Now, base - scan 6 input waterway 6 ₂ and the water outlet of the bottom 2 ₁ water inlet 2 ₂ formed in the outer tube 2 is fitted into the center 2 ₃
There is formed a water discharge passage 6 ₃ to be fitted, but this will be subject to the insertion of the nipple is arranged to change the direction as right angle. That is, incoming water channel 6 ₂ and the water outlet passage 6 ₃ intact base - will be redirected in a perpendicular direction on scan 6, reaches the nipple 6 ₄ and 6 ₅ and. In this case the water outlet 6 ₃ arranged so that the central axis directly intersecting that although the water inlet 2 ₂ water channel 6 ₃ out its central axis is input waterway 6 ₂ and the central axes produces a slight spacing without intersecting directly Have been. This makes the nipple 6
₄ and 6 ₅ The base - symmetrically juxtaposed against scan center, for example Tsuinho - connection E is formed by the scan - scan became able to connect to the well-balanced water purifier.

FIG. 14 shows a drain valve body 30 used here.
FIG. 15 is a horizontal sectional view. In the figure, 30 ₁ and 30 ₂ are hose connection ports on the inlet side, and 30 ₃ and 30 ₃
30 ₄ E Izumi side - a scan connecting opening. Then, the cylindrical housing 30 ₅ provided drain port 30 _6, further floating ball - le 30 _7, blocking ports 30 _8, those having an antibacterial metal net 30 _9. The floating ball - le 30 _7, Ka - when the internal pressure of the cartridge is large without a seal with the outside by closing the shut-off port 30 ₈ moves to the blocking opening 30 ₈ side when the internal pressure is reduced is obtained by a structure that can contact with the outside away from the cut-off port 30 _8, in this case, so that the water purifier inside the water is discharged. In the figure, reference numeral 30 ₁₀ E - a scan mounting band.

[0039]

According to the water purifier of the present invention, an inner tube and an outer tube are provided in a housing can in order to solve the problem that the whole structure of the water purifier is large and complicated, and the pre-filter and the purifier are respectively provided. It has a structure in which the filter media are built in separately and can be easily replaced without soiling the hands when the pre-filter is clogged. In addition, the structure is such that the water remaining in the water purifier is drained. It is also extremely good from a sanitary point of view.

[Brief description of the drawings]

FIG. 1 is a diagram mainly showing a flow of water and showing a concept of a water purifier of the present invention.

FIG. 2 is a longitudinal sectional view showing a preferred example of the water purifier of the present invention.

FIG. 3 is a plan view of an outer cylinder.

FIG. 4 is a plan view of the outer cylinder cap.

FIG. 5 is a plan view of a cartridge cap.

FIG. 6 is a horizontal sectional view of a water inlet.

FIG. 7 is a cross-sectional view of an air intake valve provided in a cartridge cap.

FIG. 8 is a plan view of a housing cap.

FIG. 9 is a plan view of a base.

FIG. 10 is a side view of FIG. 9;

FIG. 11 is a rear view of FIG. 9;

FIG. 12 is a sectional view taken along line AA in FIG. 9;

FIG. 13 is a sectional view taken along line BB of FIG. 10;

FIG. 14 is a front view of a drain valve body.

FIG. 15 is a horizontal sectional view of the drain valve body of FIG. 14;

[Explanation of symbols]

a) outer cylinder, b) inner cylinder, c) pre-filter, d) purification filter material, e) water inlet, f) water outlet, g) hose connected to water inlet, e coupled to h ‥‥ water output - scan, i ‥‥ draining valve body, j ‥‥ outside air filtration membrane, k ‥‥ air inlet valve body, 1 ‥‥ housing case body, 1 ₀ ‥‥ housing cap 1 ₀₁ ‥‥ housing cap of the handle, 1 ₁ constriction of the upper end of ‥‥ housing can body, 1 ₂ ‥‥ male thread, 2 ‥‥ barrel, the bottom of the 2 ₁ ‥‥ outer cylinder, the 2 ₂ ‥‥ barrel central to the formed water inlet of the bottom, 2 ₃ ‥‥ barrel bottom forming the water outlet of 2 ₄ peripheral flange surrounding the ‥‥ water inlet, 2 ₅ ‥‥ outer cylinder bottom forming the projections, 3 ‥‥ the inner cylinder, the lower end of the 3 ₁ ‥‥ inner cylinder, 4 ‥‥ outer cylinder cap, 4 ₁ outer periphery of ‥‥ outer cylinder cap, is formed on the outer periphery of the 4 ₂ ‥‥ outer cylinder cap Recess, 4 ₃ ‥‥ barrel遊口formed in the central portion of the cap, 4 ₄ ‥‥ female thread, 4 ₅ ‥‥ surrounding the遊口flange, 4 ₆ ‥‥ circumferential groove, 6 ‥‥ base - scan, 6 ₁ ‥‥ cushion gum, 6 ₂ ‥‥ inlet water channel, 6 ₃ ‥‥ out waterways, 6 _4, 6 ₅ ‥‥ nipple, 6 ₄₁ ‥‥ water inlet e - scan, 6 ₅₁ ‥‥ Izumi Ho - scan, 7 ₁ ‥ ‥ fibrous activated carbon, 7 ₂ ‥‥ granular activated carbon, 7 ₃ ‥‥ sintered filter -, 8 ₁ ‥‥ O-ring, 8 ₂ ‥‥ O- ring groove, 10 ‥‥ mosquito - cartridge, 10 ₀ ‥‥ prefilter -, 10 ₁ ‥‥ month - cartridge cap, 10 ₂ ‥‥ pawl, 10 ₃ ‥‥ blind plug, 10 ₀₁ ‥‥ prefilter - the lower end, 10 ₄ ‥‥ force - the lowermost end of the cartridge, 10 ₅ ‥‥ reverse check valve, 10 ₁₁ ‥‥ force - the cartridge cap tip, 10 ₁₂ ‥‥ through Mizuguchi, 10 ₁₃ ‥‥ mosquito - cartridge male screw cap 10 ₁₄ ‥‥ mosquito - knob cartridge cap, 10 ₁₅ ‥‥ communication Mizuguchi Coupon, 20 ‥‥ air intake valve, 20 ₂ ‥‥ cylindrical housing, 20 ₃ ‥‥ blocking port, 20 ₄ ‥‥ floating ball - Le , 20 ₅ ‥‥ Antibacterial wire mesh, 30 ‥‥ Drain valve body, 30 ₁ , 30 ₂ホ Inlet-side hose connection port, 30 ₃ , 30 ₄ ‥‥ Outlet-side hose connection port, 30 ₅ ‥‥ cylindrical housing, 30 ₆ ‥‥ draining port, 30 ₇ ‥‥ floating ball - le, 30 ₈ ‥‥ blocking port, 30 ₉ ‥‥ antimicrobial wire mesh, 30 ₁₀ ‥‥ Ho - scan mounting band.

Claims (7)

[Claims] 1. An outer cylinder, an inner cylinder erected in the outer cylinder, a pre-filter in the inner cylinder, a purification filter material filled between the outer cylinder and the inner cylinder, and a water inlet in a bottom of the inner cylinder. A water outlet is provided at the bottom of the outer cylinder, water flows into the inner cylinder from a hose connected to the water inlet, dust is filtered by the pre-filter, and the upper part of the outer cylinder is higher than the upper part of the inner cylinder. A water purifier in which water purified by a purifying filter medium in an outer cylinder is taken out from a hose connected to a water discharge part, wherein a hose has a built-in drain valve body. Water purifier. 2. The water purifier according to claim 1, wherein a drain valve body is incorporated in each of the inlet and outlet hoses. 3. The water purifier according to claim 1, wherein the hose has a built-in antibacterial air filtration membrane together with a drain valve. 4. The drain valve body is configured to close when the internal water pressure of the water purifier is high and seal with the outside, and to open when the internal water pressure is reduced to drain the residual water inside the water purifier. The water purifier according to claim 1. 5. The water purifier according to claim 1, further comprising an air intake valve on an upper part of the water purifier. 6. The air intake valve body is configured to be closed when the internal water pressure of the water purifier is large and sealed with the outside, and to be opened when the internal water pressure is reduced to take in external air into the water purifier. The water purifier according to claim 5. 7. A housing outer can, an outer cylinder housed in the housing outer can and having a water inlet and a water outlet at a bottom portion, an inner cylinder erected inside the outer cylinder, and an outer cylinder inside the outer cylinder. A purifying filter material filled between the cylinders, an outer cylinder cap for closing an upper edge of the outer cylinder, and a cylindrical pre-filter inserted into the inner cylinder from above.
A cartridge, a pre-filter inserted into the cartridge, a pre-filter cartridge cap for covering an upper portion of the pre-filter cartridge, and a pre-filter cartridge cap. A water inlet is formed at a position located below the outer cylinder cap when the outer cap is mounted on the outer cylinder cap. A water purifier provided with a base for supporting the outer cylinder and a water inlet and a water outlet communicating with the water inlet and the water outlet of the outer cylinder. A water purifier comprising an intake valve body and a pair of hoses connected to the water inlet and the water outlet, each having a drain valve.