JPH05269311A - Filter - Google Patents

Abstract

PURPOSE:To replace a filter medium cartridge without removing an upper cover and simultaneously to prevent water from falling from the filter medium cartridge. CONSTITUTION:In a filter 13 provided with a raw water inflow pass 14 and a filtrate outflow pass 27, a cartridge fitting part to which a filter medium cartridge 4 is fitted and which consists of a lift base 20 and a turntable 17 goes up and down and simultaneously is turned to a specified angle around a rotating shaft 16 to be inclined. Thereby the filter medium cartridge 4 is made attachable and detachable to and from the lift base 20 of the cartridge fitting part, remaining integrated with a cartridge pan 22 into which a water falling preventive valve 26 is incorporated. This permits the filter medium cartridge 4 to be rapidly replaced without water falling from the filter cartridge cartridge 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for filtering drinking water and the like.

[0002]

2. Description of the Related Art In recent years, filters have been widely used in ordinary households, and recently, a built-in type filter incorporated in a sink has been put on the market in order to make the area around the sink clear. Hereinafter, a conventional built-in type filter will be described with reference to the drawings.

FIG. 6 is a schematic view of a conventional built-in type filter. In FIG. 6, a raw water inflow pipe 3 that branches from a water pipe and allows raw water to flow into the filter 1 is connected to the upstream side of the raw water inflow passage 2 at the lower part of the filter 1 through a packing, A joint 5 with a filter medium cartridge 4 for filtering raw water is provided on the side. Similarly, a joint 7 with the filter medium cartridge 4 is provided on the upstream side of the filtered water outflow path 6 in the upper part of the filter 1, and a filtered water discharge pipe 8 for discharging the filtered water is provided on the downstream side via a packing. Connected. The filtered water outflow passage 6 and the joint 7 are provided in the upper cover 9, and the upper cover 9 is attached by being screwed into the filter body 10. To replace the filter medium cartridge 4, the upper cover 9 is removed, the used filter medium cartridge 4 is removed, and the joint 11 on the raw water inlet side of the new filter medium cartridge 4 is connected to the joint 5 on the raw water inflow passage 2 side.
This is performed by attaching the upper cover 9 again and connecting the joint 12 on the filtered water outlet 6 side to the joint 12 on the filtered water outlet side of the filter medium cartridge 4.

[0004]

However, in the above-mentioned conventional configuration, when the filter medium cartridge 4 is replaced, the used filter medium cartridge 4 cannot be taken out unless the upper cover 9 is removed from the filter body 10 each time. In addition, if the filtered water discharge pipe 8 does not have a flexible structure that can freely move together with the upper cover 9, the purpose of the filtered water discharge pipe 8 is to bother.
You must also remove it. Then, after replacing the filter medium cartridge 4 with a new one, the reverse working process had to be repeated again, which was too time-consuming.

Further, when the used filter medium cartridge 4 is taken out, water drops from the filter medium cartridge 4 and the inside of the filter body 10 is submerged.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to provide a filter in which the filter medium cartridge can be replaced without removing the upper cover and the water can be prevented from falling from the filter medium cartridge.

[0007]

To achieve the above object, the present invention is directed to a raw water inflow side of two cartridge mounting portions for mounting a filter medium cartridge of a filter having a raw water inflow passage and a filtered water outflow passage. One of the cartridge mounting portions on either the filtered water outflow side is moved up and down, and is rotated by a predetermined angle about the rotation axis to be inclined.

[0008]

According to the above construction, the filter medium cartridge and the cartridge tray having the water drop prevention valve incorporated therein can be attached to and detached from the elevating table of the cartridge mounting portion. As a result, there is no risk of water falling from the filter medium cartridge, and the filter medium cartridge can be replaced quickly.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, but the same parts as those in the conventional example are designated by the same reference numerals and duplicate description will be omitted.

(Embodiment 1) FIG. 1 shows a first filter of the present invention.
FIG. 6 is a schematic view of a state in which the filter medium cartridge in the example of FIG. In FIG. 1, the raw water inflow pipe 3 is connected to the upstream side of the raw water inflow passage 14 at the lower part of the filter 13 through a packing as in the conventional example. Raw water inflow passage 14
A turntable support portion 15 is provided in the refracting portion, and the turntable 17 can be rotated and tilted about a rotation shaft 16 of the turntable support portion 15 by a certain angle. Joint 1 of turntable 17
A joint 21 provided in an elevating table 20 that has a spring 19 built therein and moves up and down within a certain range is inserted into the joint 8. The joint 21 follows the inner surface of the joint 18 of the rotary table 17 as the elevating table 20 moves. And repeat the piston movement. Joints 23 and 24 are provided on the upstream side and the downstream side of the cartridge tray 22, respectively.
The downstream joint 24 is attached to the downstream side of the joint 21, and the downstream joint 24 is attached to the raw water inlet side joint 11 of the filter medium cartridge 4. A spherical water drop prevention valve 26 for preventing water drop from the filter medium cartridge 4 is incorporated in the water channel portion 25 of the cartridge tray 22. Water drop prevention valve 26
With the filter medium cartridge 4 and the cartridge tray 22 integrated with each other, the filter medium cartridge 4 is removed from the lifting table 20 of the cartridge mounting portion to prevent water drop when the filter medium cartridge 4 is replaced.

Here, the cartridge mounting portion on the side of the raw water inflow passage 14 usually means the one composed of the rotary table 17, the lifting table 20 and the cartridge tray 22, but the filter medium cartridge 4 and the cartridge tray 22. In the case where the cartridge mounting portion is removed in the integrated state, the cartridge mounting portion means that constituted by the rotary table 17 and the elevating table 20.

The cartridge mounting portion on the filtered water outflow passage 27 side is composed of a cartridge tray 28 and a joint 29 provided on the upstream side of the filtered water outflow passage 27. Joint 29
Is connected to a joint 12 on the filtered water outlet side of the filter cartridge 4, and a filtered water discharge pipe 8 is connected to the downstream side of the filtered water outflow passage 27 via a packing as in the conventional example.

With respect to the filter of the present invention having the above-mentioned structure, the filter medium cartridge will be described below with reference to the schematic view of FIG. 2 for replacing the filter medium cartridge in the first embodiment of the filter of the present invention. The work process at the time of replacement will be described.

In FIG. 2, when replacing the filter medium cartridge 4, first, the filter medium cartridge 4 is pushed downward. When the filter medium cartridge 4 descends, the joint 12 on the filtered water outlet side of the filter medium cartridge 4 is disengaged from the joint 29 of the cartridge mounting portion above the filter 13. Along with this, the upper part of the filter medium cartridge 4 comes off from the cartridge tray 28, and the upper part of the filter medium cartridge 4 becomes a free end. On the other hand, on the cartridge mounting portion side at the bottom of the filter 13, the cartridge tray 22 descends as the filter cartridge 4 descends, and the spring 19 built in the lift table 20 to which the cartridge tray 22 is attached contracts. The elevator 20 also descends at the same time. With the lift table 20 sinking into the rotary table 17, the cartridge mounting portion is rotated around the rotary shaft 16 of the rotary table supporting portion 15 in the direction of arrow A to tilt the filter cartridge 1 into the filter medium cartridge 4.
Remove from the mounting part of 3.

When the filter medium cartridge 4 is removed from the mounting portion of the filter 13, if the filter medium cartridge 4 alone is removed, water will drop from the raw water inlet side of the filter medium cartridge 4.
The cartridge tray 22 becomes submerged. In order to prevent this, the filter medium cartridge 4 and the cartridge tray 22
It can be removed from the mounting part in a state where the and are integrated. When the filter medium cartridge 4 and the cartridge receiving tray 22 are integrated with each other, the filter material cartridge 4 and the cartridge receiving tray 22 are removed from the lifting table 20 of the cartridge mounting portion, so that the water drop prevention valve 26 incorporated in the water passage 25 of the cartridge receiving tray 22 closes the water passage 25. Prevents water from dropping when the filter medium cartridge 4 is replaced. After that, the cartridge tray 22 is removed from the filter medium cartridge 4 in the sink of the sink to promote the water drop of the filter medium cartridge 4.

Next, the case where the new filter medium cartridge 4 is attached to the filter 13 will be described. When mounting the filter medium cartridge 4, first, the joint 24 on the downstream side of the cartridge tray 22 is attached to the joint 11 on the raw water inlet side of the filter medium cartridge 4. Next, with the cartridge mounting portion tilted in the direction of arrow A, the cartridge tray 22
The upstream joint 23 is inserted into the joint 21 of the lifting table 20. Then, in a state where the elevating table 20 is pushed down, the cartridge mounting portion in which the filter medium cartridge 4 is mounted is rotated in the direction of arrow B to stand upright. When the hand is loosened while the filter medium cartridge 4 is standing upright, the spring 19 built in the lift table 20 expands to raise the lift table 20, and accordingly the filter cartridge 4 also moves up. The upper part of the raised filter medium cartridge 4 is fitted into the cartridge tray 28 of the mounting portion, and the joint 12 on the filtered water outlet side of the filter medium cartridge 4 is connected to the joint 29 provided on the upstream side of the filtered water outlet 27. It is fixed to the filter 13 by.

(Embodiment 2) In the combination of the water channel portion 25 of the cartridge tray 22 and the water drop prevention valve 26 described in Embodiment 1, the following problems sometimes occur.

When the filter medium cartridge 4 is removed from the filter 13, the filter medium cartridge 4 is pushed down, or when the filter medium cartridge 4 is attached, the joint 23 on the upstream side of the cartridge tray 22 mounted on the filter medium cartridge 4 is connected to the lifting table 20. When the cartridge mounting portion is inserted in the joint 21 and the elevating table 20 is pushed down and the cartridge mounting portion is raised in the direction of the arrow B, the water passage portion 25 of the cartridge tray 22 may be sealed by the water drop prevention valve 26. When the water passage 25 is sealed by the water drop prevention valve 26, a closed chamber is created in the raw water inflow passage 14, and in the former case, the cartridge tray 22 cannot be removed from the lift table 20. In the latter case, the filter cartridge 4 is upright. Even if the hand is loosened in this state, the spring 19 built in the lift 20 cannot extend against the atmospheric pressure, and as a result, the filter cartridge 4 cannot rise. To prevent the occurrence of a closed room,
It suffices to secure a gap between the water passage portion 25 of the cartridge tray 22 and the prevention valve 26 and eliminate air pressure difference by inflowing air.

In the following, the method for ensuring the gap is shown in FIG. 3 which is a schematic view of the second embodiment of the present invention in which the filter material cartridge is pushed down, and FIG. 4 is the second embodiment of the present invention. It will be described with reference to a schematic view of a state in which the cartridge is released. In FIG. 3, the joint 21 of the lifting table 20
Since the projection 30 is provided in the water channel inside the container and the projection 30 lifts the water drop prevention valve 26 from below, a gap is created between the water channel portion 25 of the cartridge tray 22 and the water drop prevention valve 26. ing. Therefore, inside the water passage portion 25, the upper and lower sides of the water drop prevention valve 26 are maintained at the same atmospheric pressure, and the force for sucking the cartridge tray 22 does not work.
Therefore, as shown in FIG. 4, when the hand holding the filter medium cartridge 4 is released, the filter medium cartridge 4 rises due to the extension of the spring 19 built in the elevating table 20.

The method for ensuring the gap between the water channel portion 25 of the cartridge tray 22 and the water drop prevention valve 26 is not limited to the method described above, and other methods may be used. An example of another method will be described with reference to the schematic view of the water channel portion and the water drop prevention valve in the second embodiment of the present invention shown in FIG. In FIG. 5, the spherical water drop prevention valve 26 in the water channel portion 25 of the cartridge tray 22 temporarily closes the thin elliptical water channel portion 31, but since it is a sphere and an ellipse, it cannot be sealed. A gap 32 is always formed in the portion surrounded by the broken line of ∘ and the one-dot chain line of the circle. Air circulates through the gap 32 to keep the surroundings of the water drop prevention valve 26 at atmospheric pressure.

Here, the gaps shown in FIGS. 3, 4 and 5 are exaggeratedly represented, and the actual gaps are so small that water does not drop from the filter medium cartridge 4.

Incidentally, the first and second embodiments described above
As for the above, only the case where the cartridge mounting part that rises and falls and is on the raw water inflow side was touched, but the case where the cartridge mounting part on the filtered water outflow side is up and down and tilted is the same if the top and bottom are turned over. .. However, the water drop prevention valve is installed only in the cartridge tray on the raw water inflow side.

[0023]

According to the filter of the present invention, either the raw water inflow side or the filtered water outflow side can be selected from the two cartridge mounting portions for mounting the filter medium cartridges of the filter having the raw water inflow passage and the filtered water outflow passage. One of the cartridge mounting portions is configured to move up and down, rotate at a certain angle around the rotation shaft, and tilt. As a result, the filter cartridge and the cartridge tray incorporating the water drop prevention valve can be attached / detached from the lift of the cartridge mounting part without changing the filter cartridge, without replacing the filter cartridge with water. Can be done quickly.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a state in which a filter medium cartridge according to a first embodiment of a filter of the present invention is mounted.

FIG. 2 is a schematic view of replacing the filter medium cartridge in the first embodiment of the filter of the present invention.

FIG. 3 is a schematic diagram of a state in which a filter medium cartridge according to a second embodiment of the present invention is pushed down.

FIG. 4 is a schematic diagram of a state in which a filter medium cartridge according to a second embodiment of the present invention is released.

FIG. 5 is a schematic diagram of a water channel portion and a water drop prevention valve according to a second embodiment of the present invention.

FIG. 6 is a schematic diagram of a conventional built-in type filter.

[Explanation of symbols]

 1 Filter 2 Raw Water Inflow Channel 3 Raw Water Inflow Pipe 4 Filter Material Cartridge 5 Joint 6 Filtered Water Outflow Channel 7 Joint 8 Filtered Water Discharge Pipe 9 Top Cover 10 Filter Main Body 11 Joint 12 Joint 13 Filter 14 Raw Water Inflow Channel 15 Rotating Table Support 16 rotary shaft 17 rotary table 18 joint 19 spring 20 lifting table 21 joint 22 cartridge tray 23 joint 24 joint 25 water channel part 26 water drop prevention valve 27 filtered water outflow channel 28 cartridge tray 29 joint 30 protrusion 31 water channel part 32 gap

Claims (3)

[Claims] 1. A filter body comprising: a filter body having a raw water inflow path and a filtered water outflow path; and a filter medium cartridge detachably attached to the filter body and containing a filter medium, the filter medium cartridge. Has a receiving portion that engages with one end of the inside of the filter body, and the receiving portion is provided rotatably in a direction perpendicular to the longitudinal direction of the filter body. A filter provided with an urging member in the receiving portion so that the receiving portion urges the filter medium cartridge toward the inner peripheral portion of the filter body when attached to the main body. 2. The filter according to claim 1, wherein the cartridge tray on the raw water inflow side is provided with a water drop prevention valve. 3. The filter according to claim 2, wherein a gap for allowing air to flow is secured between the water drop prevention valve provided in the cartridge tray on the raw water inflow side and the water channel portion.