JPH055348Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a water purification/backwash switching valve for a water filter having a double chamber.

[Conventional technology]

A water filter used to purify tap water is connected to a water purification/backwash switching valve that switches the flow direction of the tap water supplied to the filter between purification and backwashing. Conventional water purification/backwash switching valves have a rotary flow path valve inside the valve housing that can be rotated forward and reverse within a certain angle range by operating a handle, and this rotary flow path valve cleans water from the four ports of the valve housing.・Configured to switch to backwashing.

[The problem that the idea aims to solve]

The conventional water purification/backwash switching valve described above has a rubbing structure in which the valve housing and the rotating flow path valve are in contact with each other on a wide surface, so there is a problem that the rubbing surface is wide and the switching operation becomes difficult. There were also problems in that if dirt, sand, etc. entered the surface, it would become impossible to operate, or the rubbing surface would wear out due to forced rotation.

This idea was devised to solve the above-mentioned conventional problems, and its purpose was to make the switching operation easier with fewer friction points, and to prevent the operation from becoming impossible even if a small amount of dirt or sand got in. The object of the present invention is to propose a water purification/backwash switching valve for water filters that has a relatively simple structure that does not cause any problems, and has high practical value.

[Means to solve the problem]

In order to achieve the above purpose, the water purification/backwash switching valve for water filters of this invention has the following (a) to
The configuration shown in (f) was adopted.

(a) It has a valve cavity 10 into which tap water flows, and a left valve chamber 14 and a right valve chamber 15 are formed in the lower part of the interior of the valve cavity 10, which are partitioned by a bottom wall 11, an upper bottom wall 12, and a central partition wall 13, A valve cavity 10 and left and right valve chambers 14 and 15 are disposed on the upper bottom wall 12.
A pair of left and right water inlet holes 24a, 25a that communicate with each other.
are concentrically formed at a predetermined opening angle with respect to the center hole 16 of the partition wall, and right and left water outlet holes 14a, 15a are formed in the bottom walls of the left valve chamber 14 and the right valve chamber 15 through the center hole 1 of the partition wall.
The valve housing 1 has a configuration in which a water outlet 4 is provided on the outer periphery of the left valve chamber 14 and a water inlet 5 is provided on the outer periphery of the right valve chamber 15. , (b) A switch having a rotary operation handle 32 and a drain port 33 attached to the lower side of the valve housing 1 in a water-sealed manner so that the valve housing 1 can be rotated in the forward and reverse directions within a certain angle range θ by manual operation. (c) a center rod 28 that is fitted into the center hole 16 of the partition wall of the valve housing 1 and whose lower end is fixed to the switching base 3 so as to rotate integrally therewith;
The center rod 28 is connected to the head portion 28a of the rod 8.
The left valve chamber water inlet hole 24 is used as the rotation pivot.
Closed position of a and right valve chamber water inlet hole 25a
a spring-biased ball valve 30 that alternately opens and closes the left valve chamber water inlet hole 24a and the right valve chamber water inlet hole 25a;
and (d) a downward spring that alternately opens and closes the left valve chamber water outlet hole 14a and the right valve chamber water outlet hole 15a in relation to the rotation of the switching base body 3 within a certain angle range θ. (e) The left and right water outlet switching valves 41, 42 protrude downward through the water outlet holes 14a, 15a and are connected to the switching base body. The water outlet hole 14 is pushed up in the valve opening direction by the rotating sliding contact action of the arcuate cam surface 35 of No. 3.
Push needle 41 with a smaller diameter than the hole diameter of a, 15a
a, 42a;
At the time of water purification switching when the water is blocked, the left and right water outlet switching valves 41 and 42 are operated so that the left water outlet switching valve 41 closes and the right water outlet switching valve 42 opens, and the right valve chamber water inlet hole 25a is opened. At the time of backwash switching when the left valve chamber water inlet hole 24a is opened and the ball valve 30 is closed, the right water outlet switching valve 42 closes the water outlet switching valves 41 and 42, and the left outlet water switching valve 41 opens. It is characterized by having a cam surface shape that allows it to operate in the following manner.

The upper bottom wall 12 of the valve housing 1 may be formed integrally with the valve housing 1, but when the valve housing bottom wall 11 is integral with the valve housing peripheral wall, the left and right valve chambers 14 of the water output switching valves 41 and 42 are formed integrally with the valve housing 1. , 15, it is formed of a left valve block 24 and a right valve block 25 that are separate from the valve housing 1 and are fitted onto the upper surfaces of the openings of the left and right valve chambers 14, 15. The biasing springs 4 of the left water outlet switching valve 41 and the right water outlet switching valve 42 are attached to the valve blocks 24 and 25.
3 and 44 are installed inside and the valve mechanism rotating body 2
It is preferable to provide a left slot cap portion 24b and a right slot cap portion 25b that protrude so as to have a rotation limiting function as shown in FIG.

Furthermore, the water inlet hole 24a by the ball valve 30,
In order to ensure water sealing of the valves 25a, the left valve block 24 and the right valve block 25 are configured to have a concave base portion 26 in which the water inlet holes 24a, 25a are formed in a stepped manner. Left and right water inlet holes 24a, 2 are provided on the recessed base portion 26.
8 having water holes 27a and 27b matching with 5a.
It is also possible to fit an 8-shaped packing 27 and use the water hole opening edge of the 8-shaped packing 27 as a valve seat against which the ball valve 30 is pressed. Further, the rotation limit regulating means of the switching base body 3 and the rotation valve mechanism 8 are simplified, and the ball valve 3
0, the rotating body 29 of the rotating valve mechanism 8 is attached to the head 28 of the center rod 28.
The cap-shaped rotating body 2 is formed in the shape of a cap with a lower opening connected to the cap so as to rotate integrally with a.
Stoppers 29a and 29b for restricting rotational movement may be protrudingly provided on the outer circumferential portion of the slot cap 9 so as to alternately abut on the left slot cap portion 24b and the right slot cap portion 25b.

[Effect]

As shown in FIG. 4, the water purification/backwash switching valve having the above configuration connects the water outlet 4 of the left valve chamber of the valve housing 1 with the water supply port 45a of the water filter 45 through piping, and also connects the water outlet 45a of the water filter 45 with the water outlet 45b of the water filter 45. It is used by connecting the right valve chamber water inlet 5 of the valve housing 1 with piping, and the rotation operation handle 32 of the switching base body 3 is connected to the second
When the rotating body 29 of the rotating valve mechanism 8 rotates from the position A indicated by the dotted line in the figure to the position B indicated by the solid line in the figure, the rotating body 29 of the rotating valve mechanism 8
The central rod 2 rotates together with the switching base 3.
8 to the closing position of the right valve chamber water inlet hole 25a, and the right valve chamber water inlet hole 25
a is closed by the ball valve 30 and the left valve chamber water inlet hole 24a is opened, and at the same time, the right outlet water switching valve 42 is opened by the cam action of the switching base body 3, and the left outlet water switching valve 41 is opened. Since the valve is in the closed state (water purification switching state shown in FIG. 4), when tap water is allowed to flow into the valve cavity 10 of the valve housing 1 from the inlet in this water purification switching state, the water flows into the valve cavity 10. Water flows into the left valve chamber 14 from the open left water inlet hole 24a, flows out from the left valve chamber water outlet 4, and is supplied to the water filter 45 via the pipe p1 connected to the water outlet 4. Then, the filtered purified water flowing out from the drain port 45b of the filter 45 is transferred to the water inlet 5 of the valve housing 1 via the pipe p2 connected to the filter drain port 45b.
Water is fed into the right valve chamber 15 from the water outlet hole 15 of which the valve of the right valve chamber 15 is open.
Water flows out into the switching base body 3 from a, and is discharged as purified water from the drain port 33 of the switching base body 3.

Further, in the water purification switching state, when the rotation operation handle 32 of the switching base body 3 is rotated from the position B shown by the solid line in FIG. 2 to the position A shown by the dotted line in the same figure,
The rotating body 29 of the rotating valve mechanism 8 is the switching base body 3
The left valve chamber water inlet hole 24a is rotated to the closed position by the center rod 28 which rotates together with the ball valve 30, and the left valve chamber water inlet hole 24a is closed by the ball valve 30, and the right valve chamber water inlet hole 25 is closed.
a is open, and at the same time, the left water outlet switching valve 41 is opened by the cam action of the switching base 3, and the right water outlet switching valve 42 is closed (fifth
(backwash switching state shown in the figure). Therefore, if tap water is allowed to flow into the valve cavity 10 of the valve housing 1 from the inlet in this backwash switching state, the water flowing into the valve cavity 10 will be released. The water flows into the right valve chamber 15 from the right water inlet 25a, flows out from the right valve chamber water inlet 5, and flows backward into the water filter 45 from the drain port 45b through the pipe p2 connected to the water inlet 5. Then, the wash water after the backwashing process that flows out from the water supply port 45a (means the water supply port when using purified water, and becomes the drain port during backwashing) of the filter 45 is sent to the filter. The water is fed into the left valve chamber 14 from the water outlet 4 of the valve housing 1 through the pipe line p1 connected to the water supply port 45a, and from the water outlet hole 14a of the left valve chamber 14 whose valve is open, the switching base body 3
Water flows out into the drainage port 33 of the switching base body 3.
The water will be discharged as backwash water.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 in the figure shows a double chamber type valve case,
This valve housing 1 has a valve cavity 10 into which tap water flows, and a left valve chamber 14 and a right valve chamber 15 that are partitioned by a valve housing bottom wall 11, an upper bottom wall 12, and a central partition wall 13 are located at the lower inside of this valve cavity 10. A valve cavity 10 and left and right valve chambers 14 are formed in the upper bottom wall 12.
A pair of left and right water inlet holes 24a, 25 that communicate with 15
a are concentrically drilled at a predetermined opening angle (for example, 90 degrees) with respect to the center hole 16 of the partition wall, and left and right water outlet holes 14a are formed in the bottom walls of the left valve chamber 14 and right valve chamber 15. 15
A is concentrically formed at a predetermined opening angle (for example, 90 degrees) with respect to the center hole 16 of the partition wall, and the outer periphery of the left valve chamber 14 and the right valve chamber 15 is provided with a hole outside the valve housing 1. It has a structure in which a tubular water outlet 4 and a water inlet 5 which protrude toward each other are arranged in series.

The partition wall 13 is integrally protruded from the inner bottom of the valve housing 1 so as to divide the lower inside of the valve cavity 10 into a left valve chamber 14 and a right valve chamber 15, and the center hole 16 is formed in the central circular pedestal part 13a of the partition wall 13. is installed throughout. Furthermore, stepped fitting edges 13b are provided on both left and right sides of the partition wall 13,
This fitting edge 13b is continuous at the same height as a semicircular stepped fitting edge 13c surrounded by the inner peripheral surface of the valve housing 1, and forms a fitting receiving part of the upper bottom wall 12. There is.

The valve housing upper bottom wall 12 may be formed integrally with the valve housing 1, but in the case of this embodiment, the valve housing bottom wall 11 is integral with the valve housing peripheral wall, so that the water output switching described later is possible. The valves 41 and 42 are connected to the left and right valve chambers 14 and 1.
A left valve block separate from the valve housing 1 is separately fitted onto the upper surfaces of the openings of the left valve chamber 14 and the right valve chamber 15 (above the fitting edges 13b and 13c) so as to be easily incorporated into the valve housing 1. 24 and a right valve block 25, a circular disk fitting hole 23 is provided at the center position of the left and right valve blocks 24, 25 facing each other, and a circular disk fitting hole 23 is provided in the upper surface of the block located behind the circular disk fitting hole 23. A left slot cap part 24b and a right slot cap part 25b, which correspond in position to the left valve chamber water outlet hole 14a and the right valve chamber water outlet hole 15a, are integrally provided and project upward. In addition, the left valve block 2
4 and the water inlet holes 24a, 2 of the right valve block 25
The portion where the hole 5a is bored is formed as a recessed base portion 26 recessed in a step-like manner, and this recessed base portion 26
A figure 8-shaped packing 27 having water holes 27a, 27b that match the left and right water inlet holes 24a, 25a is fitted on top, and the opening edges of the water holes 27a, 27b of the figure 8-shaped packing 27 are fitted. The part is used as a valve seat against which a ball valve 30, which will be described later, is pressed.

An outer threaded portion 17 and an inner stepped portion 18 are provided at the upper end opening of the valve housing 1, and a metal lid 19 and a rubber gasket lid 20 are provided on the inner stepped portion 18 with water inlet holes 19a and 20a. is fitted and supported, and a water faucet (not shown) is placed on top of this rubber gasket lid 20.
A spout 21 to be attached to is installed, and this spout 21
The valve cap 2 is screwed onto the valve housing threaded part 17.
2, the entrance hole 19 is tightened and fixed.
Tap water flows into the valve cavity 10 from a and 20a.

The lower part of the valve housing 1 is fitted with an O-ring 31 that is sealed and fixed so that it can be manually rotated within a certain angle range θ (for example, an angle range of 90 degrees) in the forward and reverse directions. A switching base body 3 having a conical shape is provided. This switching base body 3 has a rotating operation handle 32 protruding from the outer periphery and a drain port 33 opening downward.
and a circular inner ring 34 connected by radial ribs,
An arc-shaped cam surface 35 (the structure and operation of which will be described later) is formed on the inner ring 34,
Further, a square hole 36 is bored in the center of the inner ring 34. A filtration net 37 is fitted inside the drain port 33, and a filtration nozzle 39 sealed with an O-ring 38 is screwed as shown in FIG.

8 is the left valve chamber water inlet hole 24 of the valve housing 1.
A and the right valve chamber water inlet hole 25a are shown to alternately open and close in relation to the rotation of the switching base body 3. The nut 2 is sealed and rotatably fitted into the lower end square portion 28b, and is fitted into the square hole 36 of the switching base body 3 so as to rotate integrally with the nut 2, and is screwed into the lower end threaded portion 28c.
The center rod 28 is fixedly fixed at 8d, and the center rod 28 is integrally connected to the head 28a of the center rod 28, and the center rod 28 is used as a rotation axis to close the left valve chamber water inlet hole 24a and the right valve chamber water inlet hole 25a. Rotating body 2 that is rotated to change the position
9, and the left valve chamber water inlet hole 24a and the valve chamber water inlet hole 25 are provided in this rotating body 29.
A ball valve 30 that alternately opens and closes the ball valve 30 and a spring 30a that biases the ball valve 30 downward.
It has a built-in configuration as shown in the figure. Note that the rotating body 29 of this rotating valve mechanism 8 is connected to the center rod 2.
The cap-shaped rotating body 29 has a spring-biased ball valve 30 built into the cap-shaped rotating body 29, and is connected to the head 28a of the cap 8 so as to rotate integrally therewith. The left slot cap portion 24b is attached to the outer periphery of the rotating body 29.
As shown in FIGS. 1 and 2, stoppers 29a and 29b for restricting rotational movement are provided to protrude and abut alternately on the right slot cap portion 25b.

Reference numerals 41 and 42 refer to the left valve chamber water outlet hole 1 in relation to the rotation of the switching base body 3 within a certain angle range θ.
4a and the right valve chamber water outlet 15a are alternately opened and closed by springs 43 and 44 (these springs are inserted inside the left slot cap part 24b and the right slot cap part 25b as shown in FIG. 3). With a pair of water output switching valves,
These left and right water outlet switching valves 41 and 42 are connected to the water outlet hole 1.
4a, 15a, and are pushed up in the valve opening direction by the rotational sliding action of the arcuate cam surface 35 of the switching base body 3.
It is configured in a piston valve shape having push needles 41a, 42a smaller in diameter than the hole diameter of the piston valve. Also,
The arcuate cam surface 35 of the switching base body 3 is configured to rotate between the left and right sides during water purification switching (the state shown in FIG. 4) when the left valve chamber water inlet hole 24a is open and the right valve chamber water inlet hole 25a is closed by the ball valve 30. The water outlet switching valves 41 and 42 are operated so that the left water outlet switching valve 41 is closed and the right water outlet switching valve 42 is open, and the right valve chamber water inlet hole 25a is opened and the left valve chamber water inlet hole 2 is operated.
4a is closed by the ball valve 30 (the state shown in FIG. 5), the right water switching valve 42 closes the water flow switching valves 41 and 42, and the left water flow switching valve 41 opens. It has a cam surface shape that allows it to operate.

The water purification/backwash switching valve of the present invention constructed as described above has a valve housing 1 as shown in FIG.
The left valve chamber water outlet 4 and the water supply port 45a of the water filter 45 are connected by piping, and the drain port 45b of the water filter 45 and the right valve chamber water inlet 5 of the valve housing 1 are connected by piping. However, the water purification/backwash switching operation of this switching valve and the water flow path during purification switching and backwash switching are as described in the [Function] section, so to avoid duplication, we will not provide detailed information. The explanation of the action will be omitted.

[Effect of idea]

Since the water purification/backwash valve of the present invention has the above-mentioned structure, there are fewer rubbing points compared to conventional valve structures, making switching operations easier and preventing dirt, sand, etc. from entering to a small extent. A water purification/backwash switching valve for water filters that has a relatively simple valve structure but has a high practical value and can completely eliminate the drawbacks of conventional valves. can be provided.

[Brief explanation of the drawing]

Fig. 1 is an exploded view of a water purification/backwash switching valve according to an embodiment of this invention, Fig. 2 is a cross-sectional plan view of the switching valve in an assembled state, and Fig. 3 is a vertical cross-section taken along the - line in Fig. 2. 4 is an action explanatory diagram showing the water purification switching state of the switching valve as an expanded sectional view in the circumferential direction, and FIG. FIG. DESCRIPTION OF SYMBOLS 1... Valve housing, 3... Switching base body, 4... Water outlet, 5... Water inlet, 8... Rotating valve mechanism, 10
... Valve cavity, 11 ... Valve housing bottom wall, 12
...Top bottom wall, 13...Central partition wall, 14...Left valve chamber, 15...Right valve chamber, 14
a... Left water outlet, 15a... Right water outlet, 16...
Partition wall center hole, 19a, 20a...Tap water inlet hole, 24...Left valve block, 25...Right valve block, 24a...Left water inlet hole, 25a...Right water inlet hole, 24b...Left slot cap part , 25
b... Right slot cap part, 26... Recessed base part, 27... Figure-8 packing, 27a, 2
7b...Water hole, 28...Center rod, 28a...
...Center rod head, 29...Rotating body, 29a, 2
9b...Stopper, 30...Ball valve, 30a...
...Ball valve biasing spring, 32...Turning operation handle of switching base body, 35...Circular cam surface, 4
1...Left water switching valve, 42...Right water switching valve, 4
1a, 42a... push needle, 43, 44...
Spring for biasing the left and right water output switching valves.

Claims (1)

[Claims for Utility Model Registration] (1) A left valve chamber 14 having a valve cavity 10 into which tap water flows, and a left valve chamber 14 partitioned downwardly inside the valve cavity 10 by a bottom wall 11, an upper bottom wall 12, and a central partition wall 13; A pair of left and right water inlet holes 24a, 25a forming the right valve chamber 15 and communicating the valve cavity 10 and the left and right valve chambers 14, 15 in the upper bottom wall 12 are arranged concentrically at a predetermined opening angle with respect to the center hole 16 of the partition wall. While drilling, left valve chamber 1
Left and right water outlets 14a and 15a are concentrically drilled in the bottom wall of the left valve chamber 14 and the right valve chamber 15 at a predetermined opening angle with respect to the center hole 16 of the partition wall, and a water outlet 4 is provided in the outer periphery of the left valve chamber 14. The right valve chamber 15 has a valve housing 1 having water inlets 5 connected to each other on the outer periphery thereof, and a water seal on the lower side of the valve housing 1 so that it can be rotated forward and backward within a certain angle range θ by manual operation. A switching base body 3 having a rotating operation handle 32 and a drain port 33 are fitted and attached, and the lower end is fitted into the center hole 16 of the partition wall of the valve housing 1 and rotates integrally with the switching base body 3. The center rod 28 is fixed to the center rod 28, and the center rod 28 is connected to the head portion 28a of the center rod 28, and the center rod 16 is used as a rotation axis to switch between the closed position of the left valve chamber water inlet hole 24a and the closed position of the right valve chamber water inlet hole 25a. Rotating body 29 to be moved
The left valve chamber water inlet hole 24a and the right valve chamber water inlet hole 25 are provided in the rotating body 29.
A rotary valve mechanism 8 incorporating a spring-biased ball valve 30 that alternately opens and closes the left valve chamber water outlet hole 14a and the right valve chamber water outlet in conjunction with the rotation of the switching base body 3 within a certain angle range θ a pair of left and right water outlet switching valves 41 biased downward by a spring, which alternately open and close the holes 15a;
42, and the left and right water output switching valves 41,
Reference numeral 42 denotes a push needle having a diameter smaller than that of the water outlet holes 14a, 15a, which projects downward through the water outlet holes 14a, 15a and is pushed up in the valve opening direction by the rotational sliding action of the circular arc-shaped cam surface 35 of the switching base body 3. 41a and 42a, and the arc-shaped cam surface 35 of the switching base body 3 is configured to have left and right valve chamber water inlet holes 24a and 42a, respectively. The water outlet switching valves 41 and 42 are operated so that the left water outlet switching valve 41 is closed and the right water outlet switching valve 42 is opened, and the right valve chamber water inlet hole 25a is opened and the left valve chamber water inlet hole 24a is operated as described above. It is constructed in a cam surface shape that operates the water outlet switching valves 41 and 42 so that the right water outlet switching valve 42 closes and the left water outlet switching valve 41 opens when switching backwash when the ball valve 30 is closed. A water purification/backwash switching valve for water filters. (2) The valve housing upper bottom wall 12 is the left and right valve chamber 1.
It is formed of a left valve block 24 and a right valve block 25 that are separate from the valve housing 1 that closes the upper surfaces of the openings of the valves 4 and 15, and these left and right valve blocks 24 and 25 have a left water outlet switching valve 41 and a right water outlet switching valve. 42 biasing springs 43, 44 are housed therein, and have a left slot cap portion 24b and a right slot cap portion 25b protruding so as to limit the rotation of the valve mechanism rotating body 29, and the water inlet hole 24a, The portion where the hole 25a is drilled is formed as a concave base portion 26 recessed in a step-like manner, and a water passage hole 27 is provided on the concave base portion 26 that matches the left and right water inlet holes 24a, 25a.
Figure 8 packing 27 with a, 27b
2. The water purification/backwash switching for a water filter according to claim 1, wherein the water passage opening edge of the figure-8 packing 27 serves as a valve seat against which the ball valve 30 is pressed. valve. (3) The rotating body 29 of the rotating valve mechanism 8 is formed in the shape of a cap with a lower opening connected to the head 28a of the center rod 28 so as to rotate integrally with the head 28a. A spring-biased ball valve 30 is incorporated inside the cap-shaped rotary body 29, and the left slot cap portion 24b and the right slot cap portion 2 are attached to the outer periphery of the cap-shaped rotating body 29.
3. The water purification/backwash switching valve for a water filter according to claim 2, wherein stoppers 29a and 29b for restricting rotational movement are provided in a protruding manner and alternately abut on the 5b.