JPS6330857Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a rotationally operated five-way water pressure switching valve.

[Conventional technology and its problems]

Conventionally, five-way switching valves for water pressure have been known to have a circular rotary flow path valve inside the valve casing that can be rotated by a fixed angle by operating a lever. Five-way switching valves have a rubbing structure in which a valve housing with five-way ports and a rotary flow path valve that switches between the five-way ports of the valve housing make surface contact and rub against each other, so there is a wide rubbing surface for easy operation. However, as the weight became heavier, there was a problem in that even a small amount of dirt, sand, etc. could get in and quickly cause the blade to lose precision or become inoperable.

[Means for solving problems]

In order to solve the above-mentioned conventional problems, this invention configures the rotary flow path valve as a separate rotary valve that does not rub against the valve casing on a wide surface, and the five communicating flows of this rotary flow path valve. It is characterized by providing a plurality of piston cylinders and a closed-type piston valve that move up and down to a predetermined switching position by the cam action of an orbiting cam, the water flow, and the action of a spring, at the road entrance and the source water inlet of the valve casing.
The structure consists of a circular rotary flow path valve 1 that is rotated by a fixed angle to three switching positions A, B, and C by lever operation of a rotary operation lever 2; It consists of a pair of upper and lower valve casings 20 and 30 fixed in a predetermined position by a connecting means 40 forming two valve chambers 21 and 31 that are water-sealed at the top and bottom. This upper valve housing 20 has a source water inlet X on the upper wall portion 20a.
and the first and second drain ports Z, Y are provided spaced apart on the same circle, and the first and second drain ports Z, Y
A vertically movable first piston cylinder 2 is formed with valve seats 22 and 23 at the opening of the valve chamber, and is biased downwardly by a spring 25 at the valve chamber protrusion 24 of the source water inlet X.
At the same time, an inverted V-shaped notch 27a is fitted in at least one of the inner peripheral part of the valve housing peripheral wall 20b and the central part of the valve housing at a position facing the first and second drain ports Z and Y.
The configuration includes a rotating cam 27 having a diameter 27b.

Further, the lower valve casing 30 has two openings, a first entrance/exit switching port F and a second entrance/exit switching opening B, arranged on the same circle and spaced apart from each other on the bottom wall portion 30a, and both switching ports F and B Valve seats 32 and 33 are formed at the opening of the valve chamber, and a V-shaped valve is formed at a position facing the first and second switching ports F and B on at least one of the inner circumference of the valve housing peripheral wall 30b and the center of the valve housing. The structure includes a rotating cam 37 having notches 37a and 37b.

On the other hand, the rotary flow path valve 1 is a valve chamber communication flow path that rotates and stops at the connection position between the source water inlet X and the first inlet/outlet switch F when the rotary operating lever 2 is set to the first switching position A. K to P, valve chamber communication passages J to Q that stop rotating at the connection position between the source water inlet X and the first inlet/outlet switching port F when the lever 2 is aligned with the second switching position port, and the lever. 2 to the third switching position C, the valve chamber communication channels I to R stop rotating at the connection position between the source water inlet X and the second inlet/outlet switching port B, and the valve chamber communication channels I to R communicate with a communication port G that rotates and stops at a position facing the second drain port Y and a position opposite to the first drain port Z when the lever 2 is set to the first switching position A and the third switching position C; ~R has a communication port H that communicates with the flow path and stops rotating at a position opposite to the first drain port Z when the lever 2 is set to the second switching position B; and a V-shaped cut 7a on at least one of the outer peripheral portions at a position facing the flow passage ports K, J, and I,
A circumferential cam 7 for operating the first piston cylinder 26 with 7b and 7c is provided, and the flow paths K to P, J to Q,
Each flow path opening K, J, which opens into the upper valve chamber 21 of I to R,
The lower end surface of the first piston cylinder 26 forms valve seats 3 to 5 that are pressed from above at each switching position A to C, and the flow paths K to P, J to Q, I to R
The flow passage ports P, Q, and R opening into the lower valve chamber 31 are urged downward by springs 8 to 10, and the first and second switching ports F,
The second valve is moved toward and away from the valve seats 32 and 33 of B.
- The fourth piston cylinders 12 to 14 are fitted, and the springs 1 are fitted to the two communication ports G and H of the flow paths I to R.
5 and 16, and is moved toward and away from the valve seats 22 and 23 of the first and second drain ports Z and Y by the cam action of the orbiting cam 27 of the upper valve housing 20. , sixth piston valves 17 and 18 are fitted.

[Effect]

When the rotary operation lever 2 is set to the first switching position A, the source water inlet
- The P flow path is connected to the first piston cylinder 26 connected downwardly to the flow path, and the second piston cylinder 12 downwardly connected to the first switching port F, and communicates with the third and fourth piston cylinders 1.
3 and 14 are pushed up by the orbiting cam 37 of the lower valve housing 30 and open into the lower valve chamber 31 at a position rotationally displaced from the second switching port B, and the fifth piston valve 17 is opened in the lower valve chamber 31
The sixth piston valve 18 is pushed up by the spring force of the spring 15 at the position of the notch 27b of the orbiting cam 27 of
Due to the pushing down action, the state shown in Fig. 7 is reached where it is lowered at a position displaced from the first drain port Z. Therefore, the source water entering from the source water inlet X flows through the channels K to P of the rotary flow channel valve 1. The filtered water flows through the first switching port F and is filtered through the filter 38 shown in FIG.
The third and fourth piston cylinders 13 and 1 are introduced into the lower valve chamber 31 from the switching port B and open into the valve chamber 31.
4 through the Q to J channels and the R to I channels, the water is introduced into the upper valve chamber 21, exits from this valve chamber to the open first drain port Z, and is supplied to the drinking water facility 39 shown in FIG. You will be able to do it.

In addition, when the rotary operation lever 2 is set to the second switching position B, the source water inlet 26 and the first switching port F through a third piston cylinder 13 that is downwardly connected, and the second and fourth piston cylinders 12 and 14 are pushed up by the orbiting cam 37 of the lower valve housing 30 and connected to the second switching port B. The sixth piston valve 18 opens into the lower valve chamber 31 at the rotationally displaced position, and the sixth piston valve 18 is pushed up by the spring force of the spring 16 at the position of the notch 27a of the circumferential cam 27 of the upper valve housing 20 to open the first drain. The opening Z is closed and the fifth piston valve 17 is in the state shown in FIG. The source water entering from the inlet X passes through the channels J to Q of the rotary channel valve 1, exits to the first switching port F, passes through the filter 38 shown in FIG. 6, and washes the inside of the filter. This cleaning water is introduced into the lower valve chamber 31 from the second switching port B, and flows from the second and fourth piston cylinders 12 and 14 that open into the valve chamber 31 to the P to K flow path and the R to I flow path. The water is introduced into the upper valve chamber 21 through the valve chamber, and is drained from the valve chamber to the open second drain port Y.

On the other hand, when the rotary operation lever 2 is set to the third switching position C, the source water inlet 26 and the second switching port B through a fourth piston cylinder 14 downwardly connected, and the second and third piston cylinders 12 and 13 are pushed up by the orbiting cam 37 of the lower valve housing 30 and connected to the first switching port F. The fifth piston valve 17 opens into the lower valve chamber 31 at the rotationally displaced position, and the fifth piston valve 17 is pushed up by the spring force of the spring 15 at the position of the notch 27a of the circumferential cam 27 of the upper valve housing 20 to open the first drain. The opening Z is closed and the sixth piston valve 18 is in the state shown in FIG. 9 in which it is lowered at a position displaced from the first drain opening Z by the pushing down action of the orbiting cam 27, so that water enters from the source water entrance X. The source water passes through the I to R flow paths of the rotary flow path valve 1 to the second switching port B, passes through the filter 38 shown in FIG. 6 in the opposite direction, and backwashes the inside of the filter. Backwash water is introduced into the lower valve chamber 31 from the first switching port F, and flows from the second and third piston cylinders 12 and 13 opening into the valve chamber 31 to the P-K flow path and the Q-J flow path. The water is introduced into the upper valve chamber 21 through the valve chamber, and is drained from the valve chamber to the open second drain port Y.

[Example of idea]

An embodiment of this invention will be described below with reference to the drawings. This five-way switching valve has three switching positions A, B, and C (water purification, washing, and backwashing) by operating the rotary operation lever 2. The position is indicated on the outer periphery of the upper valve housing 20 as shown in FIG. 6, and the circular flow path valve 1 is rotated by a constant angle of 60 degrees (the position is aligned with the index protrusion 2a at the base of the lever). The rotary flow path valve 1 is comprised of a pair of upper and lower valve housings 20 and 30 fixed in a predetermined position by a connecting means 40 forming two water-sealed valve chambers 21 and 31 above and below.

The upper valve casing 20 has three ports, a source water inlet X and first and second drain ports Z and Y, arranged on the same circle on the upper wall 20a.
Drinking facilities 3 are installed at intervals of 120 degrees.
Valve seats 22 and 23 made of wear-resistant rubber are formed at the valve chamber openings of the first drain port Z, which serves as a water supply port for water supply port 9, and the second drain port Y, which is used for cleaning and backwashing. X
A vertically movable first piston cylinder 26 is biased downwardly by a spring 25 to the valve chamber protrusion 24 (this piston cylinder rotates around the rotary flow path valve 1 through the longitudinal notch 24a of the protrusion 24). (having a protruding shaft 26a that engages with the cam 7), the valve housing peripheral wall 2
Inverted V-shaped notches 27 are formed on both the inner circumference of 0b and the center of the valve housing at positions facing the first and second drain ports Z and Y (positions shown in Fig. 4 separated by 120 degrees in the circumferential direction).
a, 27b, and a lower end opening ring groove 28 of the valve housing peripheral wall 20b.
By rotatably fitting the rubber ring 29 fitted into the ring groove 6 on the outer periphery of the rotary flow path valve 1, a water-sealed upper valve chamber 21 is formed.

The lower valve housing 30 has two openings, a first entrance/exit switching port F and a second entrance/exit switching port B, on the same circle on the bottom wall portion 30a.
Valve seats 32 and 33 made of wear-resistant rubber are formed in the valve chamber openings of both switching ports F and B, and are spaced apart from each other at 180 degree intervals.
Circulating cam 37 which has V-shaped notches 37a and 37b at positions facing the first and second switching ports F and B (180 degree position shown in FIG. 5) on both the inner circumference of 0b and the center of the valve casing. This valve housing peripheral wall 30
The rubber ring 35 fitted in the upper end opening cylinder groove 34 b is inserted into the outer circumferential lower ring groove 11 of the rotary flow path valve 1.
By fitting rotatably as shown in Figure A, a water-sealed lower valve chamber 31 is formed.

The rotary flow path valve 1 has a valve chamber communication flow path K that rotates and stops at the connection position between the source water inlet X and the first inlet/outlet switching port F when the rotary operation lever 2 is set to the first switching position A.
-P, valve chamber communication channels J to Q that stop rotating at the connecting position between the source water inlet X and the first inlet/outlet switching port F when the lever 2 is set to the second switching position B, and the lever 2. Valve chamber communication passages I to R that stop rotating at the connection position between the source water inlet a communication port G that rotates and stops at a position opposite to the second drain port Y and a position opposite to the first drain port Z when the lever 2 is set to the first switching position A and the third switching position C;
It has a communication port H that communicates with the I to R flow paths and stops rotating at a position facing the first drain port Z when the lever 2 is set to the second switching position B. Note that the flow passage ports K, J, which are opened on the upper surface of this rotary flow passage valve 1,
The flow path ports H and G formed by the pipe ports projecting upward from the rotary flow path valve 1 are arranged at intervals of 60 degrees in the counterclockwise direction of the port arrangement circle as shown in Fig. 3, and The flow path ports P and Q formed by the pipe ports protruding below the rotary flow path valve 1 are disposed at positions displaced by 30 degrees in the clockwise direction with respect to the K and J ports, and are similar to each other. The channel port R formed by the pipe port is disposed at a lower position displaced 30 degrees counterclockwise with respect to the G port, and the flow path port R is disposed at a lower position displaced by 30 degrees counterclockwise with respect to the G port, and is connected to the K, P ports, J, Q ports, I, H, G, R. The mouths are communicated as shown in FIG. 2 and FIGS. 7 to 9.

V-shaped notches 7a are provided at the center of rotation and the outer periphery (along the inner side of the outer ring groove 6) of the rotary flow path valve 1 at positions facing the flow path ports K, J, and I.
A circumferential cam 7 for operating the first piston cylinder 26 with 7b and 7c is provided, and the flow paths K~P, J~
Q, each flow path opening K opening to the upper valve chamber 21 of I to R,
Valve seats 3 to 5 made of wear-resistant rubber are provided at J and I, and the lower end surface of the first piston cylinder 26 is pressed from above at each switching position A to C. The lower valve casing 30 is biased downward by springs 8 to 10 at each flow path opening P, Q, and R that protrudes and opens into the lower valve chamber 31 of P, J to Q, and I to R.
The second to fourth piston cylinders 12 to 14, which are moved toward and away from the valve seats 32 and 33 of the first and second switching ports F and B by the cam action of the circulating cam 37, are fitted, and the The two communication ports G and H of paths I to R are biased upward by springs 15 and 16, and the first and second drain ports Z,
Closed type fifth and sixth piston valves 17 and 18, which are moved toward and away from Y valve seats 22 and 23, are fitted as shown in FIG.

Note that the second to fourth piston cylinders 12 to 14 have protruding shafts 12a and 13a that engage with the orbiting cam 37 of the lower valve housing 30 through vertically elongated notches of the flow passage ports P, Q, and P, which are downward protruding ports. , 14a, and also to the orbiting cam 27 of the upper valve housing 20 through the vertically elongated notches ga, ha of the flow passage communication ports G, H, which are upwardly protruding ports for the fifth and sixth piston valves 17, 18. Engaging protruding shaft 17
a, 18a (see FIGS. 1 and 7).

The connecting means 40 of the upper and lower valve housings 20 and 30 includes a square shaft portion 41 that is fitted into the central square hole 20c of the upper valve housing 20 with a rotation lock as shown in FIG. A square shaft part 42 is fitted in a non-rotatable manner, and a circular shaft part 43 is rotatably fitted into the center through hole 1c of the rotary flow path valve 1 (the circular protrusion 20d of the upper valve housing 20 of this circular shaft part). O-rings 43a to 43c for sealing are fitted into the central through hole 1c of the rotary flow path valve 1 and the circular protrusion 30d of the lower valve housing 30. The main body is a coupling shaft 46 having a head 44 and a screw shaft 45 at the lower end.The main coupling shaft 46 is inserted into the upper valve casing 20 from above, and a circular nut is attached to the screw shaft 45 of the coupling shaft 46. 47 from below the lower valve housing 30, and set the upper valve housing 20 and the lower valve housing 30 to a position where the source water inlet X and the first inlet/outlet switching port F are angularly displaced by 30 degrees clockwise. The rotary flow path valve 1 is held in place and fastened together in a sandwiched state so that the rotary flow path valve 1 rotates at an intermediate position.

The connecting means 40 includes a plurality of boss portions 19 and 36 protruding from the outer peripheries of the upper valve housing 20 and the lower valve housing 30.
It may also consist of a bolt inserted into a pair of holes and a nut screwed onto the bolt.

In this case, the upper valve casing 20 and the lower valve casing 30 are connected without sandwiching the rotary flow path valve 1 between them, and the rotary flow path valve 1 is installed with a large diameter inside the upper and lower directly connected valve casings. It is possible to adopt a structure in which the rotary passage valve 1 is sealed with an outer peripheral O-ring and rotatably fitted, and is rotated by the fitted rotary shaft instead of the coupling shaft 46. In this case, for example, the positions of the switching ports F and B on the bottom wall of the valve casing and the shape of the opening screws may be slightly changed, and a rotation operating lever 2 may be provided on the lower end protruding shaft of the central rotating shaft.
By operating this lever, the rotary flow path valve 1 built into the valve housing can be rotated by a constant angle.

[Effect of idea]

The five-way switching valve for water pressure of this invention has the rotary flow path valve configured as a separate rotary valve that does not rub against the valve housing on a wide surface as described above, and the valve chamber communicating flow of the rotary flow path valve. A closed type piston valve and a plurality of piston cylinders that move up and down to predetermined switching positions by the cam action of the orbiting cam, the water flow, and the spring action are installed at the channel, communication port, and source water inlet of the valve casing. Compared to conventional valves with a rubbing structure in which a valve housing having a valve housing and a rotary flow path valve that switches the five-way port of the valve housing make surface contact and rub against each other, there are fewer rubbing surfaces and the operation is easier.
Even if a small amount of dirt, sand, etc. enter, problems such as loss of precision or loss of rotational operation will not occur.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway exploded perspective view of the water pressure five-way switching valve of this invention, Fig. 1A is a vertical sectional view of the main part of the five-way switching valve in an assembled state, and Fig. 2 is a rotational flow. 3 is a plan view of the rotary flow path valve, FIG. 4 is a bottom view of the upper valve housing, FIG. 5 is a plan view of the lower valve housing, and FIG. Fig. 7 is a front view showing the switching valve in relation to the filter and drinking water equipment, and Fig. 7 is a developed cross-sectional view in the circular direction of the port arrangement showing the flow path communication state when the rotary operating lever is set to the first switching position. Fig. 8 is an explanatory drawing showing the flow path communication state when the rotary operation lever is set to the second switching position as a developed cross-sectional view in the circular direction of the opening arrangement; FIG. 7 is an action explanatory diagram showing a flow path communication state when the operating lever is set to the third switching position as a developed cross-sectional view in the circular direction of the port arrangement. 1... Rotating flow path valve, 2... Rotating operation lever, 2
a...Indicator protrusion, A...1st switching position, B...2nd switching position, C...3rd switching position, K~P,J~
Q, I to R... Valve chamber communication flow path, G, H... Channel communication port, 3, 4, 5... Valve seat, 7... Orbiting cam, 7
a, 7b, 7c...V-shaped notch, 8, 9, 1
0...Spring, 12...Second piston cylinder, 1
3...Third piston cylinder, 14...Fourth piston cylinder, 15, 16...Spring, 17...Fifth piston valve, 18...Sixth piston valve, 20...Upper valve housing, 21...Upper side Valve chamber, X... Source water inlet, Z
...First drain port, Y...Second drain port, 22, 23
... Valve seat, 24 ... Valve chamber protrusion, 25 ... Spring, 26 ... First piston cylinder, 27 ... Orbiting cam, 27a, 27b ... Inverted V-shaped notch, 29
...Rubber ring, 30...Lower valve casing, 31...Lower valve chamber, F...First entrance/exit switching port, B...Second entry/exit switching port, 32, 33...Valve seat, 35... Rubber ring, 37... Circulating cam, 37a, 37b... V-shaped notch, 38... Filter, 39... Drinking equipment, 40... Connection means.

Claims (1)

[Scope of utility model registration request] A circular rotary flow path valve 1 is rotated by a fixed angle to three switching positions A, B, and C by lever operation of a rotary operation lever 2, and water is provided above and below the rotary flow path valve 1. It consists of a pair of upper and lower valve casings 20 and 30 fixed in a predetermined position by a connecting means 40 forming two sealed valve chambers 21 and 31, and this upper valve casing 20 has a source connected to an upper wall portion 20a. Three ports, a water inlet X and first and second drain ports Z and Y, are provided spaced apart on the same circle, and valve seats 22 and 23 are provided at the valve chamber openings of the first and second drain ports Z and Y. A vertically movable first piston cylinder 26 biased downward by a spring 25 is fitted into the valve chamber protrusion 24 of the source water inlet A rotating cam 27 having inverted V-shaped notches 27a and 27b is provided in at least one center of the valve housing at a position facing the first and second drain ports Z and Y, and the lower valve housing 30 is Two openings, a first inlet/outlet switching port F and a second inlet/outlet switching port B, are provided on the bottom wall portion 30a and are spaced apart from each other on the same circle, and a valve seat 32 is provided at the valve chamber openings of both switching ports F and B. . 37, and the rotary flow path valve 1 stops rotating at the connection position between the source water inlet X and the first inlet/outlet switch F when the rotary operating lever 2 is set to the first switching position A When the lever 2 is set to the second switching position B, the source water inlet X and the first inlet/outlet switching port F are opened.
Valve chamber communication channels J to Q that rotate and stop at the connection position with
and the valve chamber communication channels I to R that stop rotating at the connection position between the source water inlet X and the second inlet/outlet switching port B when the lever 2 is set to the third switching position C; the lever 2 between the first switching position A and the third switching position A.
A communication port G that rotates and stops at a position opposite to the second drain port Y and a position opposite to the first drain port Z when set to the switching position C; It has a communication port H that rotates and stops at a position opposite to the first drain port Z when set to the second switching position B, and the flow path port K, at least one of the rotational center and the outer circumference of the flow path valve. A circumferential cam 7 for actuating the first piston cylinder 26 having V-shaped notches 7a, 7b, 7c is provided at a position opposite to the flow paths K to P, J.
The lower end surface of the first piston cylinder 26 is pressed from above to each flow path opening K, J, I opening into the upper valve chamber 21 of ~Q, I~R at each switching position A~C.
~5, and the flow paths K~P, J~
Q, each flow passage port P opening to the lower valve chamber 31 of I to R,
Q and R are urged downward by springs 8 to 10, and the first and second
The second to fourth piston cylinders 12 to 14 that are moved toward and away from the valve seats 32 and 33 of the switching ports F and B are fitted, and the two communication ports G and H of the flow paths I to R are fitted. The upper valve housing 2 is urged upward by springs 15 and 16.
Closed-type fifth and sixth piston valves 17 and 18 that are moved toward and away from the valve seats 22 and 23 of the first and second drain ports Z and Y by the cam action of the orbiting cam 27 of 0 are fitted. A water pressure five-way switching valve characterized by the following configuration.