JPH06117557A - Changeover valve device for water purifier - Google Patents

Abstract

PURPOSE:To provide a changeover valve device for a water purifier whose structure is simple and which can realize the reduction of a manufacturing cost. CONSTITUTION:A connection recessed portion to circulate water that has flowed into a valve chamber 12 through an opening 13 communicating with a filtered water inflow opening 14, into a filtering water drain opening 24 at the time of water reduction, into a filtered water water feed opening at the times of water purification and washing, and into a filtering water inflow opening 22 at the time of reverse washing is formed at the peripheral surface portion of a valve main body 33. In addition, when an operation layer 28 is in a water purification position, the filtering water inflow opening 22 and the filtering water drain opening 24 are connected to each other, and when the operation lever 28 is in a reverse washing position, a connection flow passage to connect the filtered water water feed opening to a reverse washing water drain opening is formed on the inside of the valve main body 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifier switching valve device.

[0002]

2. Description of the Related Art In general, a water purifier using a high-performance filtration filter as a filtering material requires a so-called "backwash" by flowing filtered water in the opposite direction to that of the purified water in order to prevent clogging of the filter. Therefore, a switching valve device for switching the flow of filtered water from the forward direction to the reverse direction is provided.

Conventionally, in this type of switching valve device, as disclosed in, for example, Japanese Patent Application Laid-Open No. 4-203681, a switching valve is rotatably provided in a valve box, and the switching valve is rotated by an operating lever. Then, the flow of the filtered water is switched from the forward direction to the reverse direction.

[0004]

However, in the above-mentioned conventional switching valve device, since the switching valve for switching the flow path of the water flowing into the valve box is formed of the inner cylinder and the outer cylinder, There is a problem that the structure of the switching valve becomes complicated, the manufacturing is troublesome, and the manufacturing cost is increased.
The present invention has been made in view of such problems,
An object of the present invention is to provide a switching valve device for a water purifier that has a simple structure and can reduce the manufacturing cost.

[0005]

In order to solve the above problems, a switching valve device for a water purifier according to the present invention comprises a filtered water inlet into which filtered water flows, and a filtered water which supplies the filtered water to a filtration section. A water supply port, a filtered water inlet into which filtered water from the filtration unit flows, a filtered water drainage port that drains the filtered water to the outside, and a backwash water drainage port that drains the backwash water from the filtering unit to the outside. A valve box having the same, a switching valve rotatably provided in the valve box, and an operation lever for rotating the switching valve between a water purification position and a backwash position, the switching valve comprising: When the operator lever is in the water purification position, the filtered water inlet and the filtered water supply port are communicated with each other,
When the operation lever is in the backwash position, it has a communication recess in the outer peripheral portion that communicates the filtered water inlet with the filtered water inlet, and when the operating lever is in the purified water position, the filtered water inlet and the filtered water are provided. It is characterized in that it has a communication passage inside which communicates with the drainage port, and when the operation lever is in the backwash position, the water to be filtered feed port and the backwash water drainage port are communicated with each other.

[0006]

In the present invention having such a structure, since the switching valve does not have to be composed of the inner cylinder and the outer cylinder, the structure can be simplified and the manufacturing cost can be reduced. .

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show a first embodiment of the present invention. The water purifier switching valve device of the first embodiment is installed on a sink (not shown). 1 to 3
In the figure, reference numeral 11 indicates a valve box, and inside the valve box 11, a valve chamber 12 is formed as shown in FIGS. 4 to 6.

The valve chamber 12 is formed in a cylindrical shape with a horizontal axis as a center, and an opening 13 is formed at an end of a peripheral wall portion thereof.
Are formed (see FIG. 4). This opening 13 is the valve box 1
1 is connected to the filtered water inlet 14 formed on the lower surface of the No. 1 and a water tap (not shown) is connected to the filtered water inlet 14 via a water supply pipe 15. In addition, as shown in FIG. 5, the opening 1 is formed in the center of the peripheral wall portion of the valve chamber 12.
6, 17, 18 and 19 are formed at intervals in the circumferential direction of the valve chamber 12.

The opening 16 communicates with a filtered water supply port 20 formed in the lower portion of the valve box 11. The filtered water supply port 20 has a connecting pipe 21 connected to an inlet portion of a water purifier (not shown). Are connected.

The opening 17 communicates with a filtered water inlet 22 formed in the lower portion of the valve box 11, and the filtered water inlet 22 has a connecting pipe 2 connected to an outlet of a water purifier (not shown).
3 is connected. The opening 18 communicates with a filtered water drainage port 24 formed in the upper part of the valve box 11, and a first drainage pipe 25 is connected to the filtered water drainage port 24.
The opening 19 communicates with a backwash water drain port 26 formed on the side of the valve box 11, and the backwash water drain port 26 has a second
The drainage pipe 27 of is connected.

Further, in FIGS. 1 to 3, reference numeral 28 denotes an operation lever rotatably provided on a side portion of the valve box 11. As shown in FIG. 4, the operating lever 28 includes a lever portion 29 and a boss portion 30 provided at a base end portion of the lever portion 29. The boss portion 30 is provided with a mounting screw 31 via a switching valve. 32 are connected.

As shown in FIGS. 4 to 6, the switching valve 32 has a valve main body 33 slidably in contact with the center of the peripheral wall of the valve chamber 12, and a horizontal projection from a side portion of the valve main body 33. On the peripheral surface of the valve body 33, which is composed of the connecting shaft 34, the water flowing into the valve chamber 12 from the opening 13 communicating with the filtered water inlet 14 is fed to the filtered water drainage port 24 during raw water and to the filtered water drainage port 24 during cleaning and washing. The filtered water supply port 20 is formed with a communication recess 35 that is passed through the filtered water inlet 22 during backwashing.

On the other hand, a communication passage 36 is provided inside the valve body 33.
Are formed. The communication passage 36 has four openings 36a, 36b, 36c, 36d on the peripheral surface of the valve body 33, and when the lever portion 29 of the operating lever 28 is at the position (raw water position) shown in FIG. Openings 36a, 36b
Are located in the openings 17 and 19, respectively. The connecting shaft 34 of the switching valve 32 is rotatably supported by a holding ring 37 screwed into the valve box 11.

In the first embodiment of the present invention thus constructed, when the operating lever 28 is at the position (raw water position) shown in FIG. 2, the valve is passed from the water supply pipe 15 through the filtered water inlet 14 and the opening 13. As shown by the arrow in FIG. 4, the water that has flowed into the chamber 12 flows into the opening 18 from the communication recess 35 formed in the peripheral surface portion of the valve body 33, passes through the filtered water drain port 24, and the first drain pipe 25. Emitted from.

On the other hand, when the operating lever 28 is at the position (cleaning position) shown in FIG. 7A, the water flowing from the water supply pipe 15 into the valve chamber 12 through the filtered water inlet 14 and the opening 13 is as shown in FIG. As indicated by an arrow in (b), the filtered water supply port 2 is connected to the filtered water supply port 2 through the communication recess 35 formed in the peripheral surface of the valve body 33.
0, and is introduced into the inlet of a water purifier (not shown) through the first connecting pipe 21. Then, at this time, the valve box 11 is passed from the outlet of the water purifier (not shown) through the second connecting pipe 23.
The filtered water that has flowed in flows through the communication channel 36 formed inside the valve body 33, and is discharged from the first drain pipe 25 through the filtered water drain port 24.

When the operating lever 28 is in the position (backwash position) shown in FIG. 8A, the water flowing from the water supply pipe 15 into the valve chamber 12 through the filtered water inlet 14 and the opening 13 is as shown in FIG. As indicated by an arrow in FIG. 8 (b), the filtered water inlet 22 is connected to the filtered water inlet 22 from the communication recess 35 formed in the peripheral surface of the valve body 33.
To the outlet of a water purifier (not shown) through the second connecting pipe 23. Then, at this time, the backwash water that has flowed into the valve box 11 through the first connecting pipe 21 from the inlet portion of the water purifier (not shown) flows through the communication passage 36 formed inside the valve body 33, The water is discharged from the second drain pipe 27 through the backwash water drainage port 26.

Further, when the operating lever 28 is at the position (cleaning position) shown in FIG. 9A, the water flowing from the water supply pipe 15 into the valve chamber 12 through the filtered water inlet 14 and the opening 13 is as shown in FIG. As shown by the arrow in (b), the valve body 33
The water flows into the filtered water supply port 20 from the communication recess 35 formed on the peripheral surface of the water, and is introduced into the inlet of the water purifier (not shown) through the first connection pipe 21. Then, at this time, the valve box 1 is passed from the outlet of the water purifier (not shown) through the second connecting pipe 23.
The wash water that has flowed into the inside 1 flows through the communication passage 36 formed inside the valve body 33, passes through the backwash water drain port 26, and then flows into the second
It is discharged from the drain pipe 27 of.

When the operating lever 28 is in the position (water stop position) shown in FIG. 10A, the opening 13 communicating with the filtered water inlet 14 is opened by the valve body 33 as shown in FIG. 10B. Since it is blocked, it is in a water stop state.

As described above, in the first embodiment of the present invention, the switching valve 32 for switching the flow path of the water flowing from the filtered water inlet 14 into the valve chamber 12 is slidably contacted with the center of the peripheral wall portion of the valve chamber 12. Water that flows into the valve chamber 12 through the opening 13 that is formed by the valve main body 33 having a peripheral surface and the connecting shaft 34 that horizontally protrudes from the side portion of the valve main body 33 and that communicates with the filtered water inlet 14 is used as raw water. A communication recess 35 is formed on the peripheral surface of the valve body 33 to allow the filtered water drainage port 24 to flow, the filtered water supply port 20 to be used for cleaning and washing, and the filtered water inlet 22 to be used for backwashing. A communication flow path that connects the filtered water inlet 22 and the filtered water drainage port 24 when in the purified water position, and connects the filtered water supply port 20 and the backwashed water drainage port 26 when the operation lever 28 is in the backwash position. 36 valve body By forming inside the 3, it is possible to switch the flow of water even without forming the valve body 33 between the inner cylinder and the outer cylinder in the forward and backward directions. Therefore, the structure can be simplified and the manufacturing cost can be reduced.

Next, a second embodiment of the present invention will be described with reference to FIGS. In FIG. 11, reference numeral 41 indicates a valve box, and a valve chamber 42 is formed in the valve box 41. The valve chamber 42 is formed in a cylindrical shape centering on a horizontal axis, and an opening 43 is formed at the end of the peripheral wall portion thereof. The opening 43 communicates with a water supply port 44 formed on the lower surface of the valve box 11, and a water supply pipe 45 connected to a water supply source (not shown) is connected to the water supply port 44. Also,
At the center of the peripheral wall of the valve chamber 42, as shown in FIG.
The openings 46, 47, 48, 49 are formed at intervals in the circumferential direction of the valve chamber 12.

The opening 46 communicates with a filtered water supply port 50 formed in the lower portion of the valve box 11, and the filtered water supply port 50 has a connecting pipe 51 connected to an inlet portion of a water purifier (not shown). Are connected.

The opening 47 communicates with a filtered water inlet 52 formed in the lower portion of the valve box 11, and the filtered water inlet 52 has a connecting pipe 5 connected to the outlet of a water purifier (not shown).
3 is connected. The opening 48 communicates with a filtered water drain port 54 formed in the upper portion of the valve box 11, and a first drain pipe 55 is connected to the filtered water drain port 54.
The opening 49 communicates with a backwash water drainage port 56 formed in a side portion of the valve box 11, and the backwash water drainage port 56 has a second port.
The drainage pipe 57 of is connected.

Further, in FIG. 11, reference numeral 58 denotes an operation lever rotatably provided on the side portion of the valve box 11. The operating lever 58 includes a lever portion 59 and the lever portion 5.
9 and a boss portion 60 provided at the base end portion of 9, and a switching valve 62 is connected to the boss portion 60 via a mounting screw 61.

The switching valve 62 comprises a valve body 63 having a peripheral surface slidably in contact with the center of the peripheral wall portion of the valve chamber 12, and a connecting shaft 64 projecting horizontally from the side portion of the valve body 63. On the peripheral surface of the valve body 63, the water flowing into the valve chamber 42 from the opening 43 communicating with the water supply port 44 is fed to the filtered water drainage port 54 during raw water, and to the filtered water feed port 50 during water purification and cleaning. At the time of washing, a communication recessed portion 65 is formed which is passed through the filtered water inlet 52.

On the other hand, a communication passage 66 is provided inside the valve body 63.
Are formed. The communication passage 66 has two openings on the peripheral surface of the valve body 63, and when the lever portion 59 of the operation lever 58 is at the raw water position, the opening of the communication passage 66 is the same as the filtered water supply port 46. It is located so as to communicate with the backwash water drainage port 49. In addition, the connecting shaft 54 of the switching valve 52
Is rotatably supported by a retaining ring 67 screwed into the valve box 41.

In the second embodiment of the present invention thus constructed, when the operating lever 58 is at the raw water position, the water flowing from the water supply pipe 45 into the valve chamber 42 through the water supply port 44 and the opening 43 is As shown by the arrow at 13, the valve body 63
It flows into the opening 48 from the communication recessed portion 65 formed in the peripheral surface portion of, and is discharged from the first drainage pipe 55 through the filtered water drainage port 54.

On the other hand, when the operating lever 58 is in the water purification position, the water flowing from the water supply pipe 45 into the valve chamber 42 through the water supply port 44 and the opening 43 is surrounded by the valve body 63 as shown by the arrow in FIG. It flows into the filtered water supply port 50 from the communication recessed portion 65 formed in the surface part, and is introduced into the inlet part of the water purifier (not shown) through the first connecting pipe 52. Then, at this time, from the outlet of the water purifier (not shown) to the second connecting pipe 53
The filtered water that has flowed into the valve box 41 through the flow passes through the communication channel 66 formed inside the valve body 63, and is discharged from the first drain pipe 55 through the filtered water drain port 54.

Further, when the operating lever 58 is in the backwash position, the water flowing from the water supply pipe 45 into the valve chamber 42 through the water supply port 44 and the opening 43 is stored in the valve body 63 as shown by an arrow in FIG. It flows into the filtered water inflow port 52 from the communication recessed part 65 formed in the peripheral surface part, and is introduced into the outlet part of a water purifier (not shown) through the second connection pipe 53. Then, at this time, the backwash water that has flowed into the valve box 41 through the first connection pipe 51 from the inlet portion of the water purifier (not shown) flows through the communication passage 66 formed inside the valve body 63, Backwash water drain port 5
It is discharged from the second drain pipe 57 via 6.

Further, when the operating lever 58 is at the cleaning position, the water flowing from the water supply pipe 45 into the valve chamber 42 through the water supply port 44 and the opening 43 is surrounded by the circumference of the valve body 63 as shown by the arrow in FIG. It flows into the filtered water supply port 50 from the communication recessed portion 65 formed in the surface part, and is introduced into the inlet part of the water purifier (not shown) through the first connection pipe 51. Then, at this time, from the outlet of the water purifier (not shown) to the second connecting pipe 53
The wash water flowing through the valve box 41 through the communication passage 66 formed inside the valve body 63 is discharged from the second drainage pipe 57 through the backwash water drainage port 56.

In the second embodiment of the present invention, as in the above-described first embodiment, the flow of water is reversed from the forward direction without forming the valve body 33 of the switching valve 62 with the inner cylinder and the outer cylinder. Since it can be switched to the direction, the structure can be simplified and the manufacturing cost can be reduced.

In the second embodiment described above, the valve body 6
The peripheral edge portion of 3 was cut into a fan shape to form the communication recessed portion 65. However, as shown in FIGS. 17 to 19, the communication hole 69 is formed in the side wall of the recessed portion 68 formed in the peripheral surface portion of the valve body 63. It may be a communicating recess.

[0033]

As described above, according to the present invention, it is possible to provide a water purifier switching valve device having a simple structure and capable of reducing the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a front view of a water purifier switching valve device according to a first embodiment of the present invention.

FIG. 2 is a side view of the water purifier switching valve device according to the first embodiment of the present invention.

FIG. 3 is a plan view of a water purifier switching valve device according to a first embodiment of the present invention.

4 is a sectional view taken along the line AA of FIG.

5 is a cross-sectional view taken along the line BB of FIG.

6 is a cross-sectional view taken along the line CC of FIG.

FIG. 7 is an explanatory diagram for explaining the flow of water when the operation lever shown in FIG. 3 is at the water purification position.

8 is an explanatory view for explaining a flow of water when the operation lever shown in FIG. 3 is in a backwash position.

9 is an explanatory view for explaining a flow of water when the operation lever shown in FIG. 3 is in a cleaning position.

FIG. 10 is an explanatory diagram for explaining the flow of water when the operation lever shown in FIG. 3 is at the water stop position.

FIG. 11 is a sectional view of a water purifier switching valve device according to a second embodiment of the present invention.

12 is a sectional view taken along the line DD of FIG.

FIG. 13 is a sectional view of a water purifier switching valve device according to a second embodiment of the present invention.

14 is an explanatory diagram for explaining the flow of water when the operation lever shown in FIG. 11 is at the water purification position.

15 is an explanatory diagram for explaining the flow of water when the operation lever shown in FIG. 11 is in the backwash position.

16 is an explanatory diagram for explaining the flow of water when the operation lever shown in FIG. 11 is in the cleaning position.

FIG. 17 is a cross-sectional view of a water purifier switching valve device according to a third embodiment of the present invention.

18 is a cross-sectional view taken along the line EE in FIG.

FIG. 19 is a sectional view of a water purifier switching valve device according to a third embodiment of the present invention.

[Explanation of Codes] 11 ... Valve Box, 12 ... Valve Chamber, 14 ... Water Supply Port, 15 ... Water Supply Pipe, 20 ... Filtered Water Water Supply Port, 21 ... First Connection Pipe, 22
... filtered water inlet, 23 ... second connecting pipe, 24 ... filtered water drainage port, 25 ... first drainage pipe, 26 ... backwash water drainage port, 27
... second drain pipe, 28 ... operation lever, 32 ... switching valve, 3
3 ... Valve main body, 34 ... Connection shaft, 35 ... Communication recess, 36 ... Communication passage, 41 ... Valve box, 42 ... Valve chamber, 44 ... Water supply port, 45
... water supply pipe, 50 ... filtered water supply port, 51 ... first connecting pipe, 52 ... filtered water inlet, 53 ... second connecting pipe, 54 ...
Filtered water drainage port, 55 ... First drainage pipe, 56 ... Backwash water drainage port, 57 ... Second drainage pipe, 58 ... Operating lever, 62 ... Switching valve, 63 ... Valve body, 64 ... Connection shaft, 65 … Communication recess,
66 ... Communication flow path.

Claims (1)

[Claims] 1. A filtered water inlet into which filtered water flows, a filtered water inlet for supplying the filtered water to a filtering section, a filtered water inlet into which filtered water from the filtering section flows, and the filtered water A valve box having a filtered water drainage port for draining to the outside and a backwash water drainage port for draining the backwash water from the filtering unit to the outside, and a switching valve rotatably provided in the valve box, The switching valve includes an operation lever for rotating the switching valve between a purified water position and a backwash position, and the switching valve includes the filtered water inlet and the filtered water supply when the operator lever is at the cleaning position. When the operation lever is in the backwash position, the outer periphery has a communication recess for communicating the filtered water inlet and the filtered water inlet, and when the operation lever is in the clean water position, the filtration is performed. Water inlet and drain of the filtered water A switching valve device for a water purifier, which has a communication passage therein for communicating with the mouth and for communicating the filtered water supply port and the backwash water drain port when the operation lever is in the backwash position. .