JP2000088117A - Valve for fluid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily adjust flow rate by providing openings corresponding to each of a pair of discs disposed within a valve housing, making the openings into non-communicating states when a valve is closed, rotating the one disc when the valve is opened and matching both the openings with each other. SOLUTION: A valve 3 for fluid disposed on upstream side of a city water meter has an operating ring 5 to be freely rotatably fitted and inserted into a tip part of a substantially cylindrical valve housing 4 and a guide member 6 to be fitted and inserted into the operating ring 5. Both of the ring 5 and the guide member 6 are integrated by a fixing pin 7. In a large diameter part 8a of a cylindrical guide main body 8 with a difference in level in this guide member 6, a par of ceramic discs 9a, 9b are fitted and inserted and a pair of openings are symmetrically formed in each disc 9a, 9b. By opening the operating ring 5 and rotating the one disc 9b for the disk 9a fixed to the valve housing 4, opening and closing of a piping passage are performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a water supply valve, particularly a water supply valve for use in a part branched from a main pipe to a house door.

[0002]

2. Description of the Related Art Conventionally, ball type or top type valves have been used as this type of fluid valve. For example, as shown in FIG. 11, the ball type valve 51 has a ball type valve body 53 disposed in a valve housing 52. When the valve body 53 is opened, the valve body 53 is rotated by operating a handle 54 provided on an upper portion of the valve housing 52, and opens a pipe passage 55. On the other hand, when the valve body 53 is closed, the handle 54 is operated to rotate the valve body 53 along a spherical valve seat 56 arranged in the valve housing 52 to shut off the pipe passage 55. Has become.

A connecting member 57 is attached to the valve body 53 at the lower end and is attached to the handle 54 by a bolt 58 at the upper end. The valve body 53 is opened and closed by operating the handle 54. . Also, 5
9 is an O-ring for improving the sealing performance between the valve housing 52 and the connecting member 57.

A connecting portion 61 having an outer screw 60 formed on the outer periphery is provided on the upstream side of the valve housing 52, and the connecting portion 61 and the pipe 62 are connected by the screw 60. I have. On the other hand, the valve housing 52
A telescopic tube 64 is attached by a cap nut 63 to the downstream side. A check valve 65 is accommodated in the telescopic tube 64. A pipe 67 is connected to the telescopic tube 64 by a cap nut 66.

[0005]

However, in the case of the ball type valve 51, the valve body 53 is received by a spherical valve seat 56, and a sealing structure utilizing the elasticity of the valve seat 56 is employed. Therefore, with the use of the valve,
The valve seat 56 was gradually consumed by friction, and the durability was not good.

Further, since a large fluid pressure and fluid are applied to the valve body 53, the valve body 53 has a high flow velocity due to its structure (material) and is affected by cavitation and the like. In some cases, it is difficult to adjust the flow rate in a half-open state, and the valve is usually an ON-OFF valve.

Further, in the ball type valve 51, the valve element 53 is received by a spherical valve seat 56, and the valve element 5
3 is rotated by the operation handle 54. For this reason, the valve housing 52 needs to have a certain size in order to accommodate the valve body 53, and it has been difficult to make the valve housing 52 compact. Therefore, it was difficult to store the ball type water stopcock 51 in a narrow place such as in a meter box.

[0008] Incidentally, in the case of the top valve, as in the case of the above-mentioned ball valve, the top packing has a sealed structure utilizing the elasticity of the rubber packing, and the valve is used repeatedly. Then, the rubber packing gradually deformed plastically, resulting in poor durability. Also, due to the structure of the valve, the valve body moves up and down to open and close the passage, so that the valve is taller in the up and down (height) direction, making it difficult to make the device compact. .

[0009]

In order to solve the above-mentioned problems, a means adopted by the present invention is to arrange a pair of disks in a valve housing and rotate one of the disks with respect to the other disk. The disks are freely arranged, and the respective disks are provided with openings corresponding to each other. When the valve is closed, the openings are arranged at different positions on the disk, and when the valve is opened, the one disk is rotated so that the openings of the two disks coincide with each other.

Thus, when the valve is closed, the openings are arranged at different positions on the disk, and the disk blocks the fluid passage.
When the valve is opened, only one of the pair of disks is rotated so that the opening on the disk is aligned with the opening, so that the fluid can flow into the passage through the opening. It was made.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a fluid valve according to the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a water meter, and a check valve 2 is provided downstream of the water meter 1.
On the other hand, on the upstream side of the water meter 1, a fluid valve 3 according to the present invention is provided.

As shown in FIG. 2 and FIG. 3, the valve 3 is provided at an end of a substantially cylindrical valve housing 4.
An operation ring 5 rotatably inserted therein, and the operation ring 5
A guide member 6 is inserted into the guide ring 6, and the guide member 6 and the operation ring 5 are configured to be integrated by a fixing pin 7. Thus, when the operation ring 5 rotates, the guide member 6 also rotates in the same direction. 5a is an operation lever of the operation ring 5.

The guide member 6 comprises a stepped cylindrical guide body 8, and a pair of ceramic disks 9a and 9b are fitted into a large diameter portion 8a of the guide body 8. One ceramic disk, that is, the downstream disk 9a, is fixed to a fixing ring 6a disposed in the housing 4. The other ceramic disk, that is, the upstream disk 9b is fixed to the large-diameter portion 8a of the main body 8, and the rotation of the operation ring 5 causes the downstream disk 9a via the guide member 6 to rotate.
Are arranged rotatably with respect to.

As shown in FIG. 4, a pair of openings 10 and 10 are formed symmetrically in the disk 9a, while a pair of openings 11 and 11 having the same shape as the opening 10 are formed in the disk 9b. Is formed. Reference numeral 12 denotes a grease groove which extends in the radial direction of the disk 9a and stores a lubricant, so that the space between the disks 9a and 9b is filled with the lubricant. Thus, when the stopper is closed, the opening 1
Numerals 1 and 11 are located at positions shown in FIG. 4 so that fluid does not flow through the pipe passage. When the stopper is opened, the disc 9b is rotated, and when the opening 11 of the disc 9b matches the opening 10 of the disc 9a, the fluid flows through the pipe passage through the openings 10,11. I have.

Further, the guide member 6 has a guide portion 8c which protrudes conically from the small diameter portion 8b of the guide body 8, and the guide portion 8c has a pair of conical side walls as shown in FIG. Openings 13 and 13 are formed. Thus, the guide member 6 guides the fluid to the openings 10 and 11 of the disks 9a and 9b. That is,
The fluid flows along the guide member 6 toward the openings 10 and 11 in a laminar flow. Therefore, even if a large pressure fluctuation occurs on the upstream side, the fluctuating pressure reaches the above-mentioned disks 9a and 9b via the guide member 6, so that a sudden shock or turbulent flow is directly applied to the disks 9a and 9b. It does not occur, and the flow path loss due to the generation of turbulence can be kept small.

In FIG. 2, a telescopic tube 15 is attached to the downstream side of the valve housing 4 by a cap nut 14, and inside the telescopic tube 15,
A check valve 16 is housed to prevent the fluid from flowing back to the upstream side (water stopcock 3). A pipe 18 is attached to the telescopic tube 15 with a cap nut 17. Reference numeral 19 denotes a packing, and reference numeral 20 denotes a retaining ring.

Therefore, in the above embodiment, the operation ring 5 is rotated in the direction of the arrow in FIG. 6 to rotate one ceramic disk 9b with respect to the other ceramic disk 9a fixed to the valve housing 4. By doing
The pipe passage was opened. Therefore, the flow rate of the fluid can be easily adjusted only by appropriately adjusting the amount of rotation of the operation ring 5.

Further, since the disks 9a and 9b are made of ceramic, they do not corrode at the opening and closing portions of the valve and have excellent durability. Further, the operation ring 5 has a ring-like structure, and has an operation lever 5a.
However, as shown in FIG. 6, since it only protrudes outward from the disks 9a and 9b, it is easy to make it compact. Therefore, it can be easily installed even in a narrow place.

Further, the operation ring 5 can be made detachable with respect to the valve housing 4 by, for example, having a structure divided into two in a half-shape. Thus, after opening / closing the passage, the operation ring 5
If it is removed, it will not be possible to open and close the passage from outside. Therefore, theft of water from the installation location of the fluid valve such as a water stopcock can be easily prevented.

The pair of disks 9a and 9b are
As shown in FIG. 7, a pair of openings 10 and 10 may be provided in the downstream disk 9a, each communicating with a pipe passage of a different system, while an opening 11 may be provided in the upstream disk 9b. In this case, the same operation and effect as in the above embodiment can be obtained by rotating the disk 9b on the upstream side in the direction of the solid line or the direction of the alternate long and short dash line in FIG. Of course, as a two-way switching valve,
The function and effect of switching the passage can also be obtained. Note that three or more openings 10 may be provided, and in this case, the valve can be switched to a plurality of pipe passages.

As shown in FIGS. 8 and 9, the disks 9a and 9a having the same openings 21 and 22, respectively.
b, a semicircular groove 2 is formed on the lower surface of one disk 9a.
3, a circular drain hole 24 communicating with the drain pipe 25 may be formed in the other disk 9b. In that case, as shown in FIG.
A path for guiding the fluid to the drain pipe 25 from the opening 22 through the groove 23 and the drain hole 24 in the direction of the arrow (b), that is, a drain path is formed. Incidentally, when the valve is open as shown in FIG.
In the state shown in FIG. 9A, the fluid flows in the direction of the arrow in FIG. 9B and flows through the normal pipe passage, and the same operation and effect as in the above embodiment can be obtained.

Further, as shown in FIG.
The center A of rotation of a and 9b may be eccentric from the center B of the pipe passage. In this case, the passage area can be increased, the flow path loss near the valve can be reduced, and the same operation and effect as in the above embodiment can be achieved.

[0024]

As described above, in the fluid valve according to the present invention, a pair of ceramic disks having openings are arranged in the valve housing, and one disk is fixed to the valve housing, and the other disk is fixed to the one disk. By arranging the other disk rotatably, when the valve is closed, the openings are respectively arranged at different positions on the disk, and when the valve is opened, the openings of the disks are aligned with each other. . Therefore, opening and closing of the passage
Since only one disk is rotated with respect to the other disk, the flow rate can be easily adjusted, and since it has a compact structure, it can be easily mounted even in a narrow place or the like. Further, since the disk is made of ceramic, it does not break due to corrosion at the opening and closing portions of the valve as in the conventional case, and is excellent in durability.

[Brief description of the drawings]

FIG. 1 is a simplified block diagram showing a state in which a fluid valve according to the present invention is installed in a water meter.

FIG. 2 is an enlarged sectional view of the fluid valve.

FIG. 3 is an exploded sectional view of the fluid valve.

FIG. 4 is a plan view showing a pair of disks used in the fluid valve.

FIG. 5 is a plan view showing a guide member for guiding a fluid flowing through the fluid valve.

FIG. 6 shows a disk used in the fluid valve,
FIG. 4 is a plan view showing a state where the operation ring is mounted.

FIG. 7 is a plan view of a disc showing a modified example of the fluid valve.

FIG. 8A is a plan view of a disk showing a state in which the fluid valve is closed, and FIG.
Sectional view taken along the line II of FIG.

FIG. 9A is a plan view of a disk showing a state in which the fluid valve is open, and FIG. 9B is a plan view of the disk.
Sectional view taken along the line II-II of FIG.

FIG. 10 is a plan view of a disk showing still another modified example of the fluid valve.

FIG. 11 is a sectional view showing a conventional fluid valve.

[Explanation of symbols]

 3 ... Fluid valve 5 ... Operation ring 6 ... Guide member 8 ... Guide body 8c ... Guide part 9a ... Ceramic disk 9b ... Ceramic disk 10 ... Opening 11 ・..Opening 16 ... Check valve 21 ... Opening 22 ... Opening 23 ... Groove 24 ... Drain hole

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[Procedure amendment]

[Submission date] August 9, 1999 (1999.8.9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

[0009]

In order to solve the above-mentioned problems, a means adopted by the present invention is to arrange a pair of disks in a valve housing and rotate one of the disks with respect to the other disk. The disks are freely arranged, and the respective disks are provided with openings corresponding to each other. And, when the valve is closed, the openings are arranged at different positions on the disk, and when the valve is opened, the one disk is rotated so that the openings of the two disks coincide with each other . The fluid flowing through the pipe passage is
Conical upstream of the disc to guide it to the opening
And a guide member having an opening on its side wall.
Caught.

[Procedure amendment]

[Submission date] November 29, 1999 (1999.11.
29)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

[0009]

In order to solve the above-mentioned problems, a means adopted by the present invention is to arrange a pair of disks in a valve housing and rotate one of the disks with respect to the other disk. The disks are freely arranged, and the respective disks are provided with openings corresponding to each other. And, when the valve is closed, the openings are arranged at different positions on the disk, and when the valve is opened, the one disk is rotated to make the openings of the two disks coincide with each other . Upstream disk with stepped cylinder
Fixed to the large diameter part of the guide body
Make the guide part protrude conically from the small diameter part of the body,
Also, to guide the fluid to the disc opening,
A pair of openings was formed .

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Claims (7)

[Claims] A pair of disks disposed in a valve housing, the one disk being rotatably disposed with respect to the other disk, and each of the disks having an opening corresponding to each other; When closing, the openings are arranged at different positions on the disk, and when the valve is opened, one of the disks is rotated so that the openings of the two disks coincide with each other. . 2. The method according to claim 1, wherein a groove is formed in the one disk, and a drain hole is formed in the other disk, and a drain path for fluid is formed through the groove and the drain hole. A fluid valve as described. 3. The opening of the other disk is a plurality of openings each communicating with a pipe passage of a different system. By rotating the one disk, the opening of the one disk is changed to the opening of the other disk. 2. The fluid valve according to claim 1, wherein the pipe passage is switched in accordance with one of the openings. 4. The fluid valve according to claim 1, wherein the rotation center of the one disk is eccentric from the center of the pipe passage. 5. The fluid according to claim 1, further comprising a guide member having a structure configured to guide a fluid flowing through a pipe passage to an opening of the disc on an upstream side of the disc. For valves. 6. The fluid valve according to claim 1, wherein a check valve is provided downstream of the disk. 7. The fluid valve according to claim 1, wherein the disk is made of ceramic.