JP2706749B2 - Switching valve device for water purifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art In general, a water purifier using a high-performance filtration filter as a filtering material flows water to be filtered, such as tap water, in the opposite direction to the time of purification in order to prevent clogging of the filter. Therefore, such a water purifier has switching means as disclosed in Japanese Patent Application Laid-Open No. 4-203681, for example, and is provided with a switching valve rotatably provided in the main body. Is rotated in the circumferential direction of a cylindrical valve chamber formed in the main body by an operation element such as an operation lever, so that the flow of the filtered water flowing into the main body is switched from a forward direction to a reverse direction. Have been.

[0003]

However, in the above-described water purifier, a switching valve rotatably provided in the main body is formed by an inner cylinder and an outer cylinder, and the switching valve that flows into the valve chamber from the raw water intake port. Since the filtered water flows into the inner cylinder and the filtered water from the filtration unit is introduced into the annular space formed between the outer cylinder and the inner cylinder, the outer peripheral surface of the outer cylinder and the valve A minute gap due to a dimensional error easily occurs between the chamber and the peripheral wall surface. For this reason, in the water purifier described above, a part of the filtered water flowing into the valve chamber is formed on the peripheral wall surface of the valve chamber from the gap formed between the outer peripheral surface of the outer cylinder and the peripheral wall surface of the valve chamber. There is a problem that the water flows into the communication hole and enters the filtered water discharged from the filtered water discharge port during filtration.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object the purpose of using a simple structure to remove water to be filtered.
An object of the present invention is to provide a water purifier switching valve device that can prevent leakage .

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a switching valve device for a water purifier according to the present invention comprises a filtered water inlet through which the filtered water flows, and a filter valve for supplying the filtered water to a filtration unit. From the filtered water inlet, the filtered water inlet to take in the filtered water from the filtering section, the filtered water drain port to discharge the filtered water, and the filtering section
Have a backwash water discharge port for discharging the inflowing backwash water, in and
A body to have a cylindrical valve chamber parts, and includes a switching valve rotatably mounted in the valve chamber, and an operating element for rotating operating the switching valve in the circumferential direction of the valve chamber The switching valve flows into the main body from the filtered water intake port.
The water to be filtered is pressed against the peripheral wall surface of the valve chamber.
The water that has flowed into the main body from the filtered water inlet is
Selectively distribute to the water inlet or the filtered water inlet
A cylindrical water stop portion, and the water stop portion is provided inside the water stop portion.
Water that has flowed in from the filtered water inlet or the filtered water inlet
Selectively to the filtered water drain or the backwash water drain
And a cylindrical valve body to be circulated .

[0006]

In the present invention having such a structure, the water to be filtered is taken in.
Of the switching valve by the water to be filtered into the main body
Is pressed against the peripheral wall of the valve chamber.
Leakage of filtered water can be prevented .

[0007]

1 to 19 show a first embodiment of the present invention. FIG. 1 is a front view of a switching valve device of a water purifier according to the embodiment. 2 is a right side view of the switching valve device, and FIG. 3 is a plan view of the switching valve device.
Denotes a valve box which is a main body of the switching valve device. The valve box 10 comprises a substantially cylindrical valve box body 11 and a valve box cover 12 screwed onto an upper portion of the valve box body 11. A raw water introduction pipe 13 forming an inlet extends upward. The raw water introduction pipe 13 is for introducing raw water (water to be filtered) into the valve box 10 from a water source such as a tap, and has an upper end portion for mounting the valve box 10 to a not-shown tap. Screw 1
4a, 14b, 14c, and 14d are screwed in from the outside of the raw water introduction pipe 13 to the inside.

The lower end of the raw water introduction pipe 13 is provided at the lower end of FIG.
, A flange 15 is provided. The flange 15 is for preventing the raw water introduction pipe 13 from coming out of the valve box 10, and is pressed by the rubber packing accommodating recess 17 in the valve box 10 via the seal rings 16a, 16b by the valve box cover 12. I have.

The rubber packing storage recess 17 is formed on the upper surface of the valve box body 11, and a raw water reservoir 18 is formed at the center of the bottom surface. The raw water reservoir 18 temporarily stores the raw water introduced into the valve box 10 by the raw water introduction pipe 13 and communicates with a valve chamber 20 formed below the raw water reservoir 18 as shown in FIG. Is communicated through.

The valve chamber 20 is formed in a cylindrical shape with a horizontal axis as a center, and its peripheral wall has communication holes 22a, 22b, 22c, 22d as shown in FIGS.
Are formed. These communication holes 22a, 22b, 2
2c and 22d, the communication hole 22a is provided with a raw water supply nozzle 23 as a raw water supply port provided on the front of the valve box main body 11.
Is in communication with The raw water supply nozzle 23 is for supplying the raw water flowing into the valve chamber 20 to a water purifier (not shown), and is connected to an inlet of the water purifier via a connection hose (not shown). As shown in FIG. 6, the communication hole 22a is formed approximately 45 degrees diagonally above the front peripheral wall of the valve chamber 20.

The communication hole 22b communicates with a filtered water inflow nozzle 24 provided at the front of the valve box body 11 as a filtered water inlet. The filtered water inflow nozzle 24 is for introducing filtered water from the water purifier into the valve box 10 and is connected to an outlet of the water purifier via a connection hose (not shown). The communication hole 22b is formed at a position approximately 45 degrees obliquely above the front peripheral wall of the valve chamber 20, similarly to the communication hole 22a described above.

The communication hole 22c is connected to a filtered water drain nozzle 25 provided at the lower end of the valve body 11 by the communication hole 2c.
2d communicates with the backwash water drain nozzle 26 provided on the front of the valve body 11, and the communication hole 22c communicates with the valve chamber 2
The communication hole 22d is formed at a position approximately 45 degrees obliquely below the front peripheral wall portion of the valve chamber 20 at the bottom of the peripheral wall portion 0. The communication hole 22c is formed on the same circumference as the communication hole 22a, and the communication hole 22d is formed on the same circumference as the communication hole 22b.

A support member 27 is screwed into the side end of the valve chamber 20 from the side of the valve box 10 as shown in FIG. The support member 27 has a cylindrical shape, and a switching valve 28 for switching the flow of raw water from the forward direction to the reverse direction or from the reverse direction to the forward direction is rotatably supported at the center thereof. A sheet-shaped rubber packing 21 is provided on the entire peripheral wall of the valve chamber 20 over the entire circumference.

The switching valve 28 has a hollow cylindrical valve body 33 whose both ends are closed as shown in FIGS. 7 and 8, and is slid on the outer wall of the valve chamber 20 outside the valve body 33. A water blocking member 29 is provided in contact therewith. This water stopping member 29
Is formed in a cylindrical shape as shown in FIG. 9 and FIG. 10, and on its peripheral surface, there is a flow through which the filtered water flowing from the valve chamber 20 to the inside of the water stopping member 29 flows out of the water stopping member 29. Road holes 35a, 35b, 35c, 35d are formed.
In addition, these flow path holes 35a, 35b, 35c, 35d
Of these, the flow passage holes 35a, 35b, 35c are formed on the same circumference as the communication holes 22a, 22c formed in the peripheral wall of the valve chamber 20, and the flow passage hole 35d is formed in the peripheral wall of the valve chamber 20. Are formed on the same circumference as the communication holes 22b and 22d.

The switching valve 28 is provided with connecting members 36a, 36b, 36 for connecting the valve body 33 and the water stopping member 29.
In the connecting members 36a, 36b, 36c, there are formed communication holes 37a, 37b, 37c for communicating the inside of the valve body 33 and the outside of the water blocking member 29. The communication holes 37a, 37b, and 37c are formed on the same circumference as the flow holes 35a, 35b, and 35c, and the communication holes 37c are formed on the same circumference as the flow holes 35d. Is formed on.

The switching valve 28 has a connecting shaft 30 at one end of a valve body 33, and an operating lever 31 (see FIGS. 1 to 4) as an operating element is attached to an end of the connecting shaft 30. ing. The operation lever 31 is connected to the switching valve 28.
Is operated to rotate in the circumferential direction of the valve chamber 20, and has five switching positions of filtration, backwashing, washing, raw water, and stop.

In the first embodiment of the present invention constructed as described above, when the operating lever 31 is at the position shown in FIG. 2 (filtration position), the raw water flowing from the valve chamber 20 into the water shutoff member 29 is As shown in FIG. 5, FIG.
a, the water is supplied to the inlet of a water purifier (not shown) through the communication hole 22a and the raw water supply nozzle 23 as filtered water.
At this time, the filtered water flowing into the valve box 10 from the filtered water introduction nozzle 24 is supplied to the communication hole 37c and the communication hole 37b.
The water is discharged from the filtered water drain nozzle 25 through the nozzle.

When the operating lever 31 is at the position shown in FIG.
Raw water flowing into the inside of the nozzle 9 is supplied as backwash water to the outlet of a water purifier (not shown) through the passage hole 35d, the communication hole 22b, and the filtered water introduction nozzle 24, as shown in FIGS. You. At this time, the raw water supply nozzle 2
The filtered water flowing into the valve box 10 from 3 is discharged from the backwash water drain nozzle 26 through the communication holes 37a and 37c.

When the operating lever 31 is at the position (washing position) shown in FIG.
The raw water flowing into the inside 9 is supplied as washing water to the inlet of a water purifier (not shown) through the passage hole 35b, the communication hole 22a, and the raw water supply nozzle 23, as shown in FIGS. At this time, the raw water supply nozzle 23
Is discharged from the backwash water drain nozzle 26 through the communication hole 37a and the communication hole 37c.

When the operating lever 31 is at the position (raw water position) shown in FIG.
The raw water flowing into the inside of the nozzle 9 is discharged from the filtered water discharge nozzle 25 through the passage hole 35c and the communication hole 22b as shown in FIGS.

In the first embodiment of the present invention constructed as described above, the cylindrical water-stopping member 2 slidably contacting the peripheral wall of the valve chamber 20.
9 is pressed against the peripheral wall of the valve chamber 20 by the raw water flowing from the valve chamber 20, so that the water stoppage of the switching valve 28 (the sealing property of the water stop member 29) can be improved. Therefore, even if there is a dimensional error between the inner diameter of the valve chamber 20 and the outer diameter of the switching valve 28, the peripheral wall of the valve chamber 20 and the switching valve 28
The water to be filtered that has flowed into the valve chamber 20 passes through the gap formed between the peripheral wall of the valve chamber 20 and the switching valve 28 without causing a gap due to a dimensional error between the valve chamber 20 and the valve chamber. 2
Thus, it is possible to prevent the water from flowing into the communication hole 22c formed in the peripheral wall portion 0 and being discharged from the filtered water drain nozzle 25 together with the filtered water.

Next, a second embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. FIG. 20 is a front view of a water purifier according to a third embodiment of the present invention, and FIG. 21 is a left side view of the water purifier, in which 51 indicates a water purifier main body. The water purifier main body 51 includes a main body base 52 having a cylindrical shape, and a main body cover 53 fitted on an outer periphery of an upper end of the main body base 52.
As shown in FIGS. 23 and 24, the main body cover 53 houses an activated carbon cartridge 54 as a filtering material.

The activated carbon cartridge 54 is constituted by accommodating a large number of granular activated carbons 56 in a cartridge body 55 having a cylindrical shape. 24 (see FIG. 24). The filtered water outflow nozzle 58 is fitted to a filtered water introduction nozzle 59 as a filtered water inflow port provided on the upper surface of the main body base 52, and a valve in the main body base 52 is provided through the filtered water introduction nozzle 59. It communicates with the chamber 60. A plurality of filtered water inflow holes 57 into which the filtered water flows are formed on the upper surface of the cartridge body 55.

The valve chamber 60 is formed in a cylindrical shape around a horizontal axis, and communication holes 61, 62, 63 are formed in the peripheral wall portion thereof as shown in FIGS. Among these communication holes 61, 62, 63, the communication hole 61 is provided on a raw water supply port 64 as a raw water supply port formed on the upper surface of the main body base 52, and the communication hole 62 is provided on a front peripheral surface portion of the main body base 52. The communication hole 63 communicates with the filtered water drain nozzle 65 provided and the backwash water drain nozzle 66 provided on the front peripheral surface of the main body base 52. The valve chamber 60
Is provided with a sheet-like rubber packing 67 over the entire circumference.

On the other hand, an opening 68 (see FIG. 22) is formed at the right end of the valve chamber 60. This opening 6
8 communicates with a raw water inlet 69 formed on the rear peripheral surface of the main body base 52. The raw water inlet 69 has a raw water inlet pipe connected to a water tap (not shown) as a water source. 70
Is screwed. A support ring 71 for rotatably supporting the switching valve 72 is screwed into the left end of the valve chamber 60 from the left peripheral surface of the main body base 52.

The switching valve 72 is shown in FIGS.
As shown in the figure, a hollow cylindrical valve body 7 having both ends closed.
A water stop member 76 is provided outside the valve main body 77 so as to slide on the peripheral wall of the valve chamber 60. The water stop member 76 is formed in a cylindrical shape, and has a valve chamber 6 on its peripheral surface.
Flow passage holes 78 a, 78 b, 78 for allowing the filtered water flowing from inside to the inside of the water stopping member 76 to flow out of the water stopping member 76.
c, 78d are formed. In addition, these flow path holes 7
8a, 78b, 78c and 78d, the flow passage holes 78a and 7
8b and 78c are communication holes 6 formed in the peripheral wall of the valve chamber 60.
The passage hole 78d is formed on the same circumference as the communication holes 63 formed on the peripheral wall of the valve chamber 60.

The switching valve 72 includes connecting members 79a, 79b, 79 for connecting the valve body 77 and the water stopping member 76.
In the connecting members 79a, 79b, 79c, there are formed communication holes 80a, 80b, 80c for communicating the inside of the valve body 77 and the outside of the water blocking member 76. The communicating holes 80a, 80b, 80c are formed on the same circumference as the flow passage holes 78a, 78b, 78c, and the communication hole 80c is formed on the same circumference as the flow passage hole 78d. Is formed on.

The switching valve 72 has a connecting shaft 74 at one end of a valve body 77, and an operating lever 75 (see FIG. 21) as an operating element is attached to an end of the connecting shaft 74. . The operation lever 75 is for rotating the switching valve 72 in the circumferential direction of the valve chamber 60, and has five switching positions of filtration, backwashing, washing, raw water, and stop.

In the second embodiment of the present invention constructed as described above, the raw water flowing into the main body base 52 from the raw water inlet 69 is formed at the right end of the valve chamber 60 as shown in FIG. It flows into the valve chamber 60 from the opening 68 made. And
The raw water flowing into the valve chamber 60 is supplied to the water stop member 7 of the switching valve 72.
6 flows into. At this time, when the operation lever 75 is at the position shown in FIG. 21 (filtration position), the raw water flowing into the inside of the water stopping member 76 from the valve chamber 60 is, as shown in FIGS. Then, it flows out of the raw water outlet 64 into the main body cover 53 through the communication hole 61. The raw water flowing out of the raw water outlet 64 into the main body cover 53 is supplied to the filtered water inflow hole 5 formed on the upper surface of the cartridge main body 55.
7 flows into the activated carbon cartridge 54 as water to be filtered.

At this time, the filtered water flowing out of the filtered water outflow nozzle 58 of the cartridge main body 55 is discharged from the filtered water discharge nozzle 65 through the filtered water introduction nozzle 59 and the flow passage holes 80c and 80a.

When the operating lever 75 is at the position shown in FIG. 28 (backwashing position), the raw water flowing into the inside of the water stop member 76 from the valve chamber 60 flows as shown in FIGS. 29 and 30. Road hole 78d, communication hole 59, and filtered water inlet 59
And flows into the activated carbon cartridge 54 as backwash water. At this time, the backwash water flowing out from the filtered water inflow hole 57 of the activated carbon cartridge 54 flows into the valve chamber 60 from the raw water outflow port 64, and flows through the passage holes 80a, 80c and the communication hole 6a.
3 and is discharged from the backwash water drain nozzle 66.

When the operating lever 75 is at the position shown in FIG. 31 (washing position), the raw water flowing from the valve chamber 60 to the inside of the water stopping member 76 is supplied to the flow path as shown in FIGS. 32 and 33. The water flows out of the raw water outlet 64 into the main body cover 53 through the hole 78 a and the communication hole 61. At this time, the washing water flowing out from the filtered water outflow nozzle 58 of the cartridge main body 55 is discharged from the backwashed water draining nozzle 66 through the filtered water introduction nozzle 59, the flow path hole 80c and the communication hole 63.

When the operating lever 75 is at the position shown in FIG. 34 (raw water position), the raw water flowing from the valve chamber 60 to the inside of the water shutoff member 76 flows through the flow path as shown in FIGS. 35 and 36. The water is discharged from the filtered water drain nozzle 65 through the hole 78c and the communication hole 62.

When the operation lever 75 is at the position shown in FIG. 37 (stop position), the filtered water introduction nozzle 59 is moved to the water stop member 7 of the switching valve 72 as shown in FIGS.
It is closed by 6 and becomes a water stop state.

In the second embodiment of the present invention constructed as described above, the water stop member 76 of the switching valve 72 is moved by the raw water flowing from the valve chamber 60 in the same manner as in the first embodiment.
Of the switching valve 72 can be enhanced. Therefore, even if there is a dimensional error between the inner diameter of the valve chamber 60 and the outer diameter of the switching valve 72, a gap due to the dimensional error does not occur between the peripheral wall portion of the valve chamber 60 and the switching valve 72. The to-be-filtered water that has flowed into the valve chamber 60 passes through a gap formed between the peripheral wall of the valve chamber 60 and the switching valve 72, and a communication hole 62 formed in the peripheral wall of the valve chamber 60.
To be discharged from the filtered water drain nozzle 65 together with the filtered water.

Next, a third embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. Numeral 90 in FIGS. 40 to 42 denotes a valve box of a switching valve device. The valve box 90 has a valve box main body 91 formed in a substantially cylindrical shape, and a valve box cover 92 screwed onto an upper portion of the valve box main body 91. A raw water introduction pipe 93 forming a filtered water intake extends from the center of the upper surface of the valve box lid 92 upward. The raw water introduction pipe 93 is for introducing raw water (water to be filtered) into the valve box 90 from a water source such as a tap, and has an upper end portion for mounting the valve box 90 to a not-shown tap. Screws 94a, 94b, 94c,
94d is screwed in from the outside of the raw water introduction pipe 93 toward the inside.

On the other hand, at the lower end of the raw water introduction pipe 93, FIG.
As shown in FIG. 3, a flange 95 is provided. The flange 95 is for preventing the raw water introduction pipe 93 from coming out of the valve box 90, and is pressed by the rubber packing accommodating recess 97 in the valve box 90 via the seal rings 96a and 96b by the valve box cover 92. I have.

The rubber packing housing concave portion 97 is formed on the upper surface of the valve box main body 91, and a raw water reservoir 98 is formed at the center of the bottom surface. The raw water reservoir 98 temporarily stores the raw water introduced into the valve box 90 by the raw water introduction pipe 93, and communicates with a valve chamber 100 formed below the raw water reservoir 98 as shown in FIG. Is communicated through.

The valve chamber 10 is formed in a cylindrical shape about a horizontal axis, and its peripheral wall has communication holes 102a, 102b, 102 as shown in FIGS.
c, 102d are formed. These communication holes 102
a, 102b, 102c, and 102d, the communication hole 10
2 a communicates with a raw water supply nozzle 103 as a raw water supply port provided on the front of the valve box main body 91. The raw water supply nozzle 103 is for supplying raw water that has flowed into the valve chamber 100 to a water purifier (not shown), and is connected to an inlet of the water purifier via a connection hose (not shown). The communication hole 102a is formed at a position approximately 45 degrees diagonally above the front peripheral wall of the valve chamber 100 as shown in FIG.

The communication hole 102b is provided in the valve body 91.
Is connected to a filtered water inflow nozzle 104 as a filtered water inflow port provided at the front of the nozzle. This filtered water inflow nozzle 10
Numeral 4 is for introducing filtered water from the water purifier into the valve box 90, and is connected to the outlet of the water purifier via a connection hose (not shown). The communication hole 102b is formed approximately 45 degrees diagonally above the front peripheral wall of the valve chamber 100, similarly to the communication hole 102a described above.

The communication hole 102c is provided in the valve body 91.
The communication hole 102d communicates with a filtered water drain nozzle 105 provided at the lower end of the valve body, and a backwash water drain nozzle 106 provided at the front of the valve box body 91.
c is formed at the bottom of the peripheral wall of the valve chamber 100, and the communication hole 102d is formed at a position approximately 45 degrees diagonally below the front peripheral wall of the valve chamber 100.

On the other hand, one end of the valve chamber 10
As shown in FIG. 3, the support member 107 is screwed from the side of the valve box 100. The support member 107 has a cylindrical shape, and a switching valve 108 for switching the flow of raw water from the forward direction to the reverse direction or from the reverse direction to the forward direction is rotatably supported at the center thereof. A sheet-shaped rubber packing 101 is provided on the entire peripheral wall of the valve chamber 100 over the entire circumference.

The switching valve 108 is shown in FIGS.
As shown in FIG. 8, a hollow cylindrical valve body 109 having both ends closed is provided, and arc-shaped water blocking members 111 a and 111 b slidably contacting the peripheral wall of the valve chamber 100 outside the valve body 109.
Are provided at intervals in the axial direction of the valve body 109. The valve body 109 and the water shutoff members 111a, 111b
Are connected by connecting members 110a and 110b, respectively, and a hollow portion in the valve body 109 and water blocking members 111a and 111b are provided at the center of the connecting members 110a and 110b.
Communication holes 112a and 112b are formed to communicate with the outer surface side of.

The switching valve 108 has a valve body 109.
The outer peripheral surface has a sliding contact member 115 whose leading end is in sliding contact with the peripheral wall portion of the valve chamber 100. A central portion of the sliding contact member 115 has a hollow portion in the valve body 109 and outer surfaces of the water blocking members 111a and 111b. A communication hole 112c is formed to communicate with.

The switching valve 108 has a valve body 109.
Has a connection shaft 113 at one end thereof, and an operation lever 114 (see FIGS. 40 to 42) as an operation element is attached to an end of the connection shaft 113. This operation lever 1
Numeral 14 is for rotating the switching valve 108 in the circumferential direction of the valve chamber 100, and has three switching positions for filtration, backwashing and raw water.

In the third embodiment of the present invention constructed as described above, when the operation lever 114 is at the position (filtration position) shown in FIG. The raw water as shown in FIGS. 44 and 4
As shown in FIG. 5, the water flows from the communication hole 102a formed in the peripheral wall of the valve chamber 100 to the raw water supply nozzle 93, and flows through a connection hose connected to the raw water supply nozzle 93 to the inlet of a water purifier (not shown). Supplied. At this time, the filtered water flowing out from the outlet of the water purifier (not shown) flows into the valve box 90 from the filtered water introduction nozzle 104, and the communication hole 10
2b, water is discharged from the filtered water drain nozzle 105 through the flow path hole 112a and the flow path hole 112b.

When the operating lever 113 is at the position shown in FIG. 49 (backwashing position), the raw water flowing into the valve chamber 100 from the raw water introduction pipe 93 as shown in FIGS. 100 communication hole 10 formed in the peripheral wall
From 2b, the water flows to the filtered water introducing nozzle 104, flows through a connection hose connected to the filtered water introducing nozzle 104, and is supplied to the outlet of a water purifier (not shown) as backwash water. At this time, the backwash water flowing out of the inlet of the water purifier (not shown) flows into the valve box 90 from the raw water supply nozzle 103, and communicates with the communication hole 102a, the flow path hole 112c, and the flow path hole 112a.
Then, water is discharged from the backwash water drainage nozzle 106.

When the operating lever 113 is at the position shown in FIG. 52 (raw water position), the raw water flowing into the valve chamber 100 from the raw water introduction pipe 93 is supplied to the valve chamber 100 as shown in FIGS. 54 and 55. Communication hole 10 formed in the peripheral wall of
Water is discharged from the filtered water drain nozzle 105 via 2c.

In the third embodiment of the present invention, the water shutoff members 111a and 111b of the switching valve 108 are pressed against the peripheral wall of the valve chamber 100 by the pressure of the raw water flowing into the valve chamber 100. In addition, the water stoppage of the switching valve 108 can be improved. Therefore, even if there is a dimensional error between the inner diameter of the valve chamber 100 and the outer diameter of the switching valve 108,
There was no gap between the peripheral wall of the valve chamber 100 and the switching valve 108 due to the dimensional error, and the filtered water flowing into the valve chamber 100 was formed between the peripheral wall of the valve chamber 100 and the switching valve 108. It can be prevented from flowing through the gap into the communication hole 102c formed in the peripheral wall of the valve chamber 100 and being discharged from the filtered water drain nozzle 105 together with the filtered water.

Next, a fourth embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. 55 to 57, reference numeral 120 denotes a valve box of a switching valve device. The valve box 120 has a substantially cylindrical valve box body 121, and a valve box cover 122 screwed onto the upper portion of the valve box body 121. From the center of the upper surface of the valve box lid 122, the raw water introduction pipe 1 forming a filtered water intake port.
23 extends upward. The raw water introduction pipe 123 receives raw water (water to be filtered) from a water source such as a tap, etc.
20 to be introduced into the container, and a valve box 1 is provided at the upper end thereof.
Mounting screw 12 for attaching 20 to a faucet (not shown)
4a, 124b, 124c and 124d are raw water introduction pipes 12
3 is screwed in from the outside.

On the other hand, a flange 125 is provided at the lower end of the raw water introduction pipe 123, as shown in FIG.
The flange 125 is for preventing the raw water introduction pipe 123 from coming out of the valve box 120, and is provided by the valve box cover 122 through the seal rings 126a and 126b.
0 is pressed by the rubber packing storage recess 127.

The rubber packing storage recess 127 is formed on the upper surface of the valve box main body 121, and a raw water reservoir 128 is formed in the center of the bottom surface. This raw water reservoir 128
58 temporarily stores the raw water introduced into the valve box 120 by the raw water introduction pipe 123. As shown in FIG. 58, the communication passage 12 is provided in a valve chamber 130 formed below the raw water reservoir 128.
9.

The valve chamber 130 is formed in a cylindrical shape with the horizontal axis as the center, and its peripheral wall has communication holes 132a, 132b, 13 as shown in FIGS.
2c and 132d are formed. These communication holes 13
2a, 132b, 132c, and 132d, communication hole 1
Reference numeral 32a communicates with a raw water supply nozzle 133 as a raw water supply port provided on the front of the valve box main body 121. The raw water supply nozzle 133 is for supplying the raw water flowing into the valve chamber 130 to a water purifier (not shown), and is connected to an inlet of the water purifier via a connection hose (not shown). The communication hole 132a is provided in the valve chamber 1 as shown in FIG.
It is formed at a position approximately 45 degrees diagonally above the front peripheral wall portion 30.

The communication hole 132b is provided in the valve body 12
1 is connected to a filtered water inflow nozzle 134 provided as a filtered water inflow port provided on the front of the apparatus. This filtered water inflow nozzle 1
34 is for introducing filtered water from the water purifier into the valve box 120, and is connected to the outlet of the water purifier via a connection hose (not shown). The communication hole 132b is formed at a position approximately 45 degrees diagonally above the front peripheral wall of the valve chamber 130, similarly to the communication hole 132a described above.

The communication hole 132c is provided in the valve body 12
1, and a communication hole 132d communicates with a backwash water drainage nozzle 136 provided on the front surface of the valve box body 121, respectively.
32c is formed at the bottom of the peripheral wall of the valve chamber 130, and the communication hole 132d is formed at a position approximately 45 degrees diagonally below the front peripheral wall of the valve chamber 130.

On the other hand, a support member 137 is screwed into one end of the valve chamber 130 from the side of the valve box 100 as shown in FIG. The support member 137 has a cylindrical shape, and a switching valve 138 for switching the flow of raw water from the forward direction to the reverse direction or from the reverse direction to the forward direction is provided at the center thereof.
Are rotatably supported. A sheet-shaped rubber packing 131 is provided on the entire peripheral wall of the valve chamber 130.

The switching valve 138 is shown in FIGS.
As shown in FIG. 3, the valve body 139 has a hollow cylindrical valve body 139 whose both ends are closed. Outside the valve body 139, plate-shaped water-stopping members 141a and 141b slidingly contacting the peripheral wall of the valve chamber 130 are provided. 139 are provided at intervals in the axial direction.

Of these water-stopping members 141a and 141b, the water-stopping member 141a closes communication holes 132a and 132c formed in the peripheral wall of the valve chamber 130, and the surface of the water-stopping member 141a has a valve body. The passage holes 142a and 142b communicating with the inside of the valve body 139 are substantially one in the circumferential direction of the valve body 139.
It is formed with an interval of 35 degrees. In addition, the water blocking member 141b is connected to the communication hole 13 formed in the peripheral wall of the valve chamber 130.
2b and 132d are closed, and a flow passage hole 142 communicating with the inside of the valve body 139 is formed on the surface of the water blocking member 141b.
c, 142d and 142e are approximately 4 in the circumferential direction of the valve body 139.
It is formed with an interval of 5 degrees.

The switching valve 138 has a valve body 139.
Has a connecting shaft 143 at one end thereof, and an operating lever 144 (see FIGS. 55 to 57) as an operating element is attached to an end of the connecting shaft 143. This operation lever 1
Reference numeral 44 denotes a rotary valve for rotating the switching valve 138 in the circumferential direction of the valve chamber 130. For example, when the operating lever 144 is at the position shown in FIG. 51 (filtration position), as shown in FIGS. The water stop member 141b 138 closes the communication hole 132d formed in the peripheral wall of the valve chamber 130.

At this time, the raw water as the water to be filtered which has flowed into the valve chamber 130 from the raw water introduction pipe 123 is supplied to the valve chamber 13.
The raw water is supplied to the raw water supply nozzle 33 from a communication hole 132a formed in the peripheral wall of the water supply nozzle 133, and is supplied to an inlet of a water purifier (not shown) through a connection hose connected to the raw water supply nozzle 133.

At this time, the filtered water flowing out of the outlet of the water purifier (not shown) flows into the valve box 120 from the filtered water introduction nozzle 134, and is filtered through the communication holes 132b, the flow holes 14d, and the flow holes 142b. Water is discharged from the water drain nozzle 135.

When the operating lever 144 is at the position shown in FIG. 64 (backwash position), the water stop member 141a of the switching valve 138 is formed on the peripheral wall of the valve chamber 130 as shown in FIGS. The closed communication hole 132c is closed.

At this time, the raw water flowing from the raw water introduction pipe 123 into the valve chamber 130 flows from the communication hole 132b formed in the peripheral wall of the valve chamber 130 to the filtered water introduction nozzle 134, and the filtered water introduction nozzle 134 Is supplied to the outlet of a water purifier (not shown) as backwash water through a connection hose connected to the water.

At this time, the backwash water flowing out of the inlet of the water purifier (not shown) flows into the valve box 120 from the raw water supply nozzle 133, and the communication hole 132a, the flow path hole 142a,
Water is discharged from the backwash water drain nozzle 136 through the passage hole 142d and the communication hole 132d.

When the operating lever 144 is at the position shown in FIG. 67 (washing position), the water stop member 141a of the switching valve 138 is formed on the peripheral wall of the valve chamber 130 as shown in FIGS. The closed communication hole 132c is closed.

At this time, the raw water flowing into the valve chamber 130 from the raw water introduction pipe 123 flows to the raw water supply nozzle 33 through a communication hole 132a formed in the peripheral wall of the valve chamber 100.
Through a connection hose connected to the raw water supply nozzle 133, washing water is supplied to an inlet of a water purifier (not shown).

At this time, the filtered water flowing out of the outlet of the water purifier (not shown) flows into the valve box 120 from the filtered water introduction nozzle 134, and the communication hole 132b, the flow path hole 141c,
Water is discharged from the filtered water drain nozzle 136 through the passage hole 141e.

When the operation lever 144 is at the position shown in FIG. 70 (raw water position), as shown in FIGS. 71 and 72, the water shutoff members 141a and 141 of the switching valve 138 are provided.
1b is a communication hole 132 formed in the peripheral wall of the valve chamber 100.
a and 132d are closed.

At this time, the raw water flowing into the valve chamber 130 from the raw water introduction pipe 123 flows out of the filtered water drain nozzle 135 through a communication hole 132c formed in the peripheral wall of the valve chamber 130.

In the fourth embodiment of the present invention constructed as described above, the water stop members 141a and 141b of the switching valve 138 are controlled by the pressure of the raw water flowing into the valve chamber 130, as in the third embodiment. Since it is pressed against the peripheral wall of the chamber 130,
The water stoppage of the switching valve 138 can be increased. Therefore, even if there is a dimensional error between the inner diameter of the valve chamber 130 and the outer diameter of the switching valve 138, the peripheral wall of the valve chamber 130 and the switching valve 1
There is no gap caused by a dimensional error between the valve chamber and the valve chamber, and the water to be filtered that has flowed into the valve chamber passes through the gap formed between the peripheral wall of the valve chamber and the switching valve 138. It can be prevented from flowing into the communication hole 132c formed in the peripheral wall of the chamber 130 and being discharged from the filtered water drain nozzle 135 together with the filtered water.

[0071] According to the present invention, as described above, simple
With such a simple structure, it is possible to provide a switching valve device of a water purifier that can prevent leakage of water to be filtered .

[Brief description of the drawings]

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

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

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

FIG. 4 is a sectional view taken along the line AA in FIG. 3;

FIG. 5 is a sectional view taken along the line BB in FIG. 3;

FIG. 6 is a sectional view taken along the line CC of FIG. 3;

FIG. 7 is a plan view of the switching valve shown in FIG. 4;

FIG. 8 is a sectional view taken along line DD of FIG. 4;

FIG. 9 is a sectional view taken along the line EE of FIG. 4;

FIG. 10 is a sectional view taken along the line FF of FIG. 4;

11 is a right side view of the switching valve device when the operation lever shown in FIG. 2 is rotated to the backwash position.

FIG. 12 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 2 is rotated to the backwash position.

FIG. 13 is a cross-sectional view showing a state of the switching valve when the operation lever shown in FIG. 2 is rotated to the backwash position.

FIG. 14 is a right side view of the switching valve device when the operation lever shown in FIG. 2 is rotated to the cleaning position.

FIG. 15 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 2 is rotated to the cleaning position.

FIG. 16 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 2 is rotated to the cleaning position.

17 is a right side view of the switching valve device when the operation lever shown in FIG. 2 is rotated to the raw water position.

FIG. 18 is a sectional view showing a state of the switching valve when the operation lever shown in FIG. 2 is rotated to the raw water position.

FIG. 19 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 2 is rotated to the raw water position.

FIG. 20 is a front view of a water purifier according to a second embodiment of the present invention.

FIG. 21 is a left side view of a water purifier according to a second embodiment of the present invention.

FIG. 22 is a sectional view taken along the line GG of FIG. 20;

FIG. 23 is a sectional view taken along the line HH in FIG. 20;

FIG. 24 is a sectional view taken along the line II of FIG. 20;

FIG. 25 is a sectional view of the switching valve shown in FIG. 22;

FIG. 26 is a sectional view taken along the line JJ of FIG. 25;

FIG. 27 is a sectional view taken along the line KK of FIG. 25;

FIG. 28 is a left side view of the water purifier when the operation lever shown in FIG. 21 is rotated to the backwash position.

FIG. 29 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 21 is rotated to the backwash position.

FIG. 30 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 21 is rotated to the backwash position.

FIG. 31 is a left side view of the water purifier when the operation lever shown in FIG. 21 is rotated to the washing position.

FIG. 32 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 21 is rotated to the cleaning position.

FIG. 33 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 21 is rotated to the cleaning position.

FIG. 34 is a left side view of the water purifier when the operation lever shown in FIG. 21 is rotated to the raw water position.

FIG. 35 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 21 is rotated to the raw water position.

FIG. 36 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 21 is rotated to the raw water position.

FIG. 37 is a left side view of the water purifier when the operation lever shown in FIG. 21 is rotated to the water stop position.

FIG. 38 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 21 is rotated to the water stop position.

39 is a cross-sectional view showing the state of the switching valve when the operation lever shown in FIG. 21 is rotated to the water stop position.

FIG. 40 is a front view of a switching valve device of a water purifier according to a third embodiment of the present invention.

FIG. 41 is a right side view of a switching valve device of a water purifier according to a third embodiment of the present invention.

FIG. 42 is a plan view of a switching valve device of a water purifier according to a third embodiment of the present invention.

FIG. 43 is a sectional view taken along the line LL in FIG. 42;

FIG. 44 is a sectional view taken along the line MM in FIG. 42;

FIG. 45 is a sectional view taken along the line NN in FIG. 42;

FIG. 46 is a plan view of the switching valve shown in FIG. 43.

FIG. 47 is a sectional view taken along the line OO in FIG. 46;

FIG. 48 is a sectional view taken along the line PP of FIG. 46;

FIG. 49 is a right side view of the switching valve device when the operation lever shown in FIG. 41 is rotated to the backwash position.

FIG. 50 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 41 is rotated to the backwash position.

FIG. 51 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 41 is rotated to the backwash position.

FIG. 52 is a right side view of the switching valve device when the operation lever shown in FIG. 41 is rotated to the raw water position.

FIG. 53 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 41 is rotated to the raw water position.

FIG. 54 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 41 is rotated to the raw water position.

FIG. 55 is a front view of a switching valve device of a water purifier according to a fourth embodiment of the present invention.

FIG. 56 is a right side view of a switching valve device for a water purifier according to a fourth embodiment of the present invention.

FIG. 57 is a plan view of a switching valve device of a water purifier according to a fourth embodiment of the present invention.

FIG. 58 is a sectional view taken along the line QQ in FIG. 57;

FIG. 59 is a sectional view taken along the line RR in FIG. 57;

FIG. 60 is a sectional view taken along the line XX of FIG. 57;

FIG. 61 is a plan view of the switching valve shown in FIG. 58;

FIG. 62 is a sectional view taken along the line YY of FIG. 61;

FIG. 63 is a sectional view taken along the line ZZ in FIG. 61;

64 is a right side view of the switching valve device when the operation lever shown in FIG. 56 is rotated to the backwash position.

FIG. 65 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 56 is rotated to the backwash position.

FIG. 66 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 56 is rotated to the backwash position.

67 is a right side view of the switching valve device when the operation lever shown in FIG. 56 is rotated to the cleaning position.

FIG. 68 is a sectional view showing a state of the switching valve when the operation lever shown in FIG. 56 is rotated to the cleaning position.

FIG. 69 is a sectional view showing a state of the switching valve when the operation lever shown in FIG. 56 is rotated to the cleaning position.

70 is a right side view of the switching valve device when the operation lever shown in FIG. 56 is rotated to the raw water position.

FIG. 71 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 56 is rotated to the raw water position.

FIG. 72 is a sectional view showing the state of the switching valve when the operation lever shown in FIG. 56 is rotated to the raw water position.

[Explanation of symbols]

10 ... valve box, 13 ... raw water introduction pipe (raw water inlet), 20 ...
Valve chamber, 23: raw water supply nozzle (raw water supply port), 24: filtered water introduction nozzle (filtration water introduction port), 25: filtered water discharge nozzle (filtration water discharge port), 26: backwash water discharge nozzle (backwash) (Water drainage outlet), 28 ... switching valve, 31 ... operating lever, 32
... water-stopping member, 33 ... valve body, 51 ... body, 52 ... body base, 53 ... body cover, 54 ... activated carbon cartridge, 5
9 ... filtered water inlet, 60 ... valve room, 64 ... raw water outlet (raw water inlet), 65 ... filtered water discharge nozzle (filtered water drain), 66 ... backwash water discharge nozzle (backwash water drain) , 69
… Raw water inlet, 72… switching valve, 75… operation lever, 7
Reference numeral 6: water stopping member, 77: valve body, 90: body, 100: valve chamber, 108: switching valve, 109: valve body, 111a, 1
11b: water stopping member, 114: operating lever, 120: main body, 130: valve chamber, 138: switching valve, 139: valve body, 141a, 141b: water stopping member, 144: operating lever.

Claims (1)

(57) [Claims] 1. A filtered water inlet, into which filtered water flows, a filtered water supply port for supplying filtered water to a filtering section, and a filtering section.
Filtered water inlet for introducing filtered water, have a filtration <br/> peroxide water outlet and for discharging the backwash water flowing from the filtration unit <br/> backwash water discharge port for discharging the filtered water, and the internal a body to have a cylindrical valve chamber, and the changeover valve was found rotatably disposed in said valve chamber,
An operating element for rotating the switching valve in a circumferential direction of the valve chamber, wherein the switching valve is provided by the filtered water flowing into the main body from the filtered water intake port.
Is pressed against the peripheral wall of the chamber, and the
The water flowing into the filter water inlet or the filtered water
A cylindrical water-stop section selectively flowing through the inlet,
The filtered water inlet or the cover provided inside the water part.
The water that has flowed in from the flood water inlet is
A cylindrical valve body for selectively flowing to the backwash water discharge port;
A switching valve device for a water purifier , comprising: