JPH0227911Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a water purifier equipped with a replaceable water purification cartridge.

[Conventional technology and its problems]

Conventionally, water purifiers have been known in which a water purification cartridge is replaceably stored and set in a container body having an inlet for raw water and an outlet for purified water.
This conventional water purifier has the inconvenience of having to remove the water purifying cartridge from the body and cleaning it when the filter medium of the cartridge becomes clogged. There was a problem in that it was not possible to cleanly remove dirt that had gotten into the product.

[Means for solving problems]

In order to solve the above-mentioned conventional problems, this invention has a bottomed cylindrical outer cylinder removably screwed onto a five-way switching valve that can switch between water purification, washing, and backwashing. A water purification cartridge is configured to be stored and set in a replaceable manner in the cylinder, and when the cartridge filter material becomes clogged, the switching valve is switched between cleaning and backwashing, and the filter material is cleaned by reverse flow of forward and reverse water. It is characterized by being able to be easily and cleanly cleaned.

[Example of idea]

Hereinafter, an embodiment of this invention will be described in detail with reference to the drawings.This water purifier has a bottomed cylindrical outer cylinder B removably screwed onto a switching valve A having an outer cylinder attachment port 1. The water purification cartridge C is configured to be exchangeably stored and set in the cylinder B, and the water purification cartridge C has a set opening having a center hole that is fitted into the cartridge joint opening 5 of the valve body 7. body c1, a bottom plate c2 supported by the inner bottom b1 of the outer cylinder B, and the bottom plate c2 and the set opening body c.
A cylindrical filter medium c3 concentrically arranged and fixed between 1
It consists of

The switching valve A has a raw water inlet 2, a purified water drain 3, and a cleaning backwash drain 4 at three locations on the outer periphery of the left and right ends and the rear end.
and a joint port 5 for the water purification cartridge C and a drain inlet 6 for cartridge backwash water are provided at the lower center located on the outer cylinder mounting port 1 side and at the lower eccentric position displaced to the water purification drain port 3. is provided with a valve body 7 having a circular shape, and the valve body 7 having five-way ports has a circumferential side of the valve chamber partially opened to the raw water inlet 2, and a bottom portion of the valve chamber that allows raw water to flow into the outer cylinder mounting port 1. A piston chamber 11 communicates with the piston chamber 11 through a passage 2a, and a raw water inflow passage 2b' is connected to the piston chamber 11 through a raw water inflow passage 2b' as shown in FIG.
The piston chamber 12 and the peripheral side of the valve chamber communicate with each other through a passageway in the cartridge joint port 5 as shown in FIG.
The piston chamber 13 and the valve chamber periphery communicate with each other through a passageway in the cartridge joint port 5 as shown in FIG. The piston chamber 14 and the peripheral side of the valve chamber communicate with the backwash drain inlet 6 as shown in FIG. A piston chamber 15 is provided, and each of the piston chambers 11 to 15
First to fifth piston valves P1 to P5, which are biased in the valve closing direction by a spring S and are movable up and down, are fitted in the housing.

Note that the second, third, and fourth piston valves P2,
The valve chambers 12, 13, and 14 of P3 and P4 are arranged concentrically with an angular interval of 120 degrees as shown in FIGS. 2 and 3, and the first piston valve P1 and the fifth piston valve P5 The valve chambers 11 and 15 are arranged concentrically on the outer circumferential side close to the raw water inlet 2 and the washing/backwash drain 4.

Reference numeral 20 indicates a piston valve operating mechanism installed in the upper portion covered by the upper lid 8 of the valve body 7, and this piston valve operating mechanism 20 operates the first to fifth piston valves P1 to P5 during water purification. The piston valves P1 and P3 are operated as shown in Fig. 1 so that the second, fourth, and fifth piston valves P2, P4, and P5 are closed. P1 and P4 open, and the second,
The third and fifth piston valves P2, P3, and P5 are operated as shown in Figure 4 to close them, and when the cartridge is backwashed, the second and fifth piston valves P2 and P5 are opened, and the 3. Fourth piston valve P1, P
3. P4 is operated as shown in Fig. 5 to close the valve, and in this embodiment, the switching lever 2
It is composed of a disc cam 22 that is rotated by a certain angle (for example, 30 degrees) by a manual operation.

This disc cam 22 includes a central cam disc 23 that is rotated about the central protruding shaft 9 of the valve body 7 as a rotation support shaft;
There are second, third, and fourth cams on the outside of this central cam disk
A ring-shaped intermediate cam disk 24 that is arranged to maintain an annular gap a into which the upper portions of the rods of the piston valves P2, P3, and P4 are fitted, and this intermediate cam disk 24.
A ring-shaped outer circumferential cam disk 25 is disposed on the outside of the cam disk 25 while maintaining an annular gap b into which the upper portions of the rods of the first and second piston valves P1 and P2 are fitted,
Each of the cam disks 23 to 25 is connected to a cam fixing disk 26 which is rotatably fitted and held at the upper end of the protruding shaft 9.
However, they are each fixed by a plurality of cam fixing pins 27 and rotated integrally.

Second, third, and fourth piston valves P are provided on the outer circumference of the central cam disk 23 and the inner circumference of the intermediate cam disk 24.
2, P3, P4 rod upper end projections 12a, 13
Circulating cams 32, 33, 34 engaged by a, 14a
are provided as shown in FIG. 2, and the rod upper end protrusions 11a and 15a of the first and fifth piston valves P1 and P5 engage with the outer circumferential portion of the intermediate cam disk 24 and the inner circumferential portion of the outer circumferential cam disk 25. Circulating cams 31, 35
are provided as shown in FIG.

The orbiting cam 31 for the first piston valve P1 is a flat surface that raises and opens the first piston valve P1 when the protrusion 11a rides up and engages as shown in FIG. It consists of a cam surface 31ab and a V-shaped notch 31c that lowers and closes the first piston valve P1 by sliding engagement of the protrusion 11a as shown in FIG. The orbiting cam 32 for the piston valve P2 has a V-shaped notch that lowers and closes the second piston valve P2 by sliding engagement of the projection 12a as shown in FIG. 7C during raw water purification and cleaning of the cartridge filter medium c3. 32a, 32b
When the cartridge filter medium c3 is backwashed, the protrusion 1
2a, the second
Flat cam surface 32 that lifts and opens the piston valve P2
The revolving cam 33 for the third piston valve P3 is composed of a flat cam surface 33a that lifts and opens the third piston valve P3 when the protrusion 13a rides up and engages as shown in FIG. 7E during raw water purification; , the protrusion 13a during cleaning and backwashing of the cartridge filter medium c3.
A V-shaped notch 33 that lowers and closes the third piston valve P3 by sliding engagement as shown in FIG. 7E.
b, 33c, and the revolving cam 34 for the fourth piston valve P4 is engaged with the protrusion 14a by sliding as shown in FIG. V-shaped notches 34a, 34c that lower and close the fourth piston valve P4, and a flat cam surface that raises and opens the fourth piston valve P4 when the projection 14a rides up and engages as shown in FIG. 7D when cleaning the cartridge filter medium c3. 34b, and the orbiting cam 35 for the fifth piston valve P5 lowers and closes the fifth piston valve P5 by sliding engagement of the projection 15a as shown in FIG. V-shaped notches 35a and 35b for valve and cartridge filter medium c3
The fifth piston valve P5 is configured to have a flat cam surface 35c that lifts and opens the fifth piston valve P5 when the projection 15a rides up and engages as shown in FIG. 7B during backwashing.

The switching lever 21 is attached to the outer circumferential cam disc 25 of the disc cam 22, and is attached to the outer circumferential notch 8a of the upper lid 8 of the main body so that it can be rotated 30 degrees to the water purification position, washing position, and backwashing position as shown in FIG. It sticks out to the front. In FIGS. 1 and 2, reference numeral 10 is a cam guide pin that protrudes from the valve body 7 and is fitted into the annular gap b between the cams, and 17 is a cam guide pin for each of the piston chambers 11 to 2.
15 shows a piston valve sliding guide piece screwed onto the valve body 7 so as to close the upper end opening of the valve 15.

In addition, when the piston valves P1 to P5 have the rod upper end protrusions 11a to 15a in the shape of a round pin, the piston valves P1 to P5 are rotated by the rotation of the disc cam 22.
Since there is a risk that the piston valves P1 to P5 may also rotate and the protrusions 11a to 15a may come off the circumferential cams 31 to 35, the piston valves P1 to P5 are prevented from rotating by suitable rotation prevention means so that they do not rotate but move up and down. ing. However, when the protrusions 11a to 15a are formed into a disk shape, the above-mentioned rotation preventing means is unnecessary.

Figure 1 shows usage conditions during raw water purification and Figure 2 I-I
It is shown as a sectional view along the line, and the first and third piston valves P1 and P3 are opened during this water purification.
Since the second, fourth, and fifth piston valves P2, P4, and P5 are closed, the raw water inlet 2 is connected to the piston chamber 1.
1->The raw water that has entered the outer cylinder B via the raw water inlet passage 2a is filtered through the cartridge filter medium c3, and the purified water rises through the center hole of the filter medium and enters the valve chamber of the third piston valve P3 which is open. 13, and is drained from the purified water drain port 3 via the purified water discharge passage 3a.

In this state shown in FIG. 1, the switching lever 21
When switched to the cleaning position shown in FIG. 2, the first and fourth piston valves P1 and P4 open, and the second, third, and
The fourth piston valve P2, P3, P5 closes.
It can be switched to the cleaning usage state shown in the figure. In this switching state of use shown in Fig. 4, from the raw water inlet 2 to the piston chamber 11.
→The raw water that has entered the outer cylinder B through the raw water inflow passage 2a passes through the cartridge filter medium c3 and washes the filter medium, and this washing water rises through the filter medium center hole and opens the fourth piston valve P4. enters the valve chamber 14 of
The water is drained from the washing backwash drain port 4 via the washing water discharge passage 4a.

In this state shown in FIG. 4, the switching lever 21
When the switch is switched to the backwash position shown in FIG. 2, the second and fifth piston valves P2 and P5 open, and the first, third, and
The fifth piston valve P1, P3, P4 opens.
It is switched to the backwash usage state shown in the figure. In the switched usage state shown in FIG. 5, the raw water entering from the raw water inlet 2 is transferred from the piston chamber 11 to the raw water inlet passage 2b' to the piston chamber to
The raw water is introduced as a downward flow into the center hole of the water purification cartridge C through the raw water inflow passage 2b, and this raw water downward flow passes through the cartridge filter medium c3 from the inside to the outside and backwashes the filter medium, and this backwash water flows outside. The water rises inside the cylinder B, enters the valve chamber 15 of the fifth piston valve P5 which is open from the backwash drain inlet 6, and drains from the wash backwash drain port 4 through a part of the wash water discharge passage 4a. will be done.

In addition, in the above embodiment, the first to fifth piston valves P
1 to P5 are opened and closed by manual rotation of the disc cam 22 using the switching lever 21. Alternatively, the piston valve operating mechanism 20 may be an electromagnetic valve operating mechanism that does not use the disc cam 22 as described above.

[Effect of idea]

The water purifier of this invention has a bottomed cylindrical outer cylinder removably screwed onto the switching valve, which is a five-way valve that can switch between water purification, washing, and backwashing, as described above, and the purified water is inserted into the outer cylinder. Since the water purification cartridge is configured to be stored and set in a replaceable manner, when the cartridge filter material becomes clogged, the switching valve can be switched between cleaning and backwashing without having to remove the water purification cartridge as in the past. This has the effect that the cartridge filter medium can be easily and cleanly washed by the reverse flow of water, which is a forward flow and a reverse flow.

[Brief explanation of the drawing]

Figure 1 shows the water purifier of this invention in use during raw water purification; Figure 2 is a vertical cross-sectional view taken along the - line; Figure 2 is a cross-sectional plan view taken along the line - of Figure 1;
The figure is a cross-sectional view taken along the - line in Fig. 1, Fig. 4 is a longitudinal sectional view taken along the - line in Fig. 3 showing the water purifier in use during washing, and Fig. 5 is a longitudinal sectional view taken along the line - during backwashing. FIG. 6 is a partial sectional view taken along the - line in FIG. 5, and FIG. 7 is an explanatory diagram showing the structure and operation of the actuating cam of each piston valve. A...Switching valve, B...Outer cylinder, C...Water purification cartridge, 1...Outer cylinder installation port, 2...Raw water inlet,
2a, 2b, 2b'...Raw water inflow passage, 3...Purified water drain port, 3a...Purified water discharge passage, 4...Cleaning backwash drain port, 4a...Cleaning water discharge passage, 5...Cartridge joint port, 6... Backwash drainage inlet, 7... Valve body, P1... First piston valve, 11... Valve chamber (piston chamber), P2... Second piston valve, 12...
... Same valve chamber (piston chamber), P3... Third piston valve, 13... Same valve chamber (piston chamber), P4... Fourth piston valve, 14... Same valve chamber (piston chamber),
P5...Fifth piston valve, 15... Valve chamber (piston chamber), 11a to 15a... Rod upper end projection of each piston valve, 20... Piston valve operating mechanism, 2
1...Switching lever, 22...Disc cam.

Claims (1)

[Scope of utility model registration request] A water purifier configured such that a bottomed cylindrical outer cylinder is removably screwed onto a switching valve having an outer cylinder mounting opening, and a water purification cartridge is replaceably stored and set within the outer cylinder, The switching valve includes a valve body having five-way ports: a raw water inlet, a purified water drain, a cleaning backwash drain, a water purifier cartridge junction, and a cartridge backwash water drain inlet, and the raw water inlet and outer cylinder of the valve body. A first piston valve provided in a piston chamber that communicates with the passage in the mounting port, a second piston valve provided in the piston chamber that communicates with the raw water inlet of the valve body and the cartridge joint port, and a cartridge joint of the valve body. a third piston valve provided in a piston chamber that communicates with the valve body through a passageway and a purified water drain port; a fourth piston valve provided in a piston chamber that communicates with a cartridge joint port of the valve body and a cleaning backwash drain port;
A fifth piston valve is provided in a piston chamber that communicates with the backwash drain inlet of the valve body and the washing backwash drain port, and the first and third piston valves are opened when purifying water. Benshi 2nd, 4th, 5th
The piston valve is operated to close, and when the cartridge is washed, the first and fourth piston valves are opened and the second, third, and fifth piston valves are closed. A five-sided piston valve operating mechanism that operates so that the second and fifth piston valves open and the first, third, and fourth piston valves close, and can be switched to water purification, washing, and backwashing. A water purifier characterized by being composed of a valve.