JPH0860713A - Expansion type stop cock - Google Patents

Abstract

PURPOSE: To facilitate removal and assembling of equipment by incorporating a pressure reducing valve mechanism comprising a tubular valve, a pressure reducing spring for pressing the tubular valve to the secondary side, and a valve seat fixed to a slide cylinder opposite to a valve part formed on the projected end of the tubular valve in the inside of a sliding part of an expansion joint. CONSTITUTION: An inlet side joint 10 is provided on one end of the primary side of a cylindrically formed body 1, and a slide cylinder 13 to which an outlet side joint 11 is fitted in such a manner as to freely slide is provided on the other end on the secondary side. A valve chest 14 is dispoed between an expansion joint 1a and the inlet side joint 10 in the inside of the body 1, and a stop cock mechanism 17 comprising a ball valve 15 and a valve seat 16, the inner peripheral wall of which is brought into slide contact with the outer peripheral surface of the ball valve is stored in the valve chest. Further, the outer end of a valve shaft 18 connected to the ball valve 15 is projected on the outer surface side of the body 1, and a handle 19 is connected thereto.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion type stopcock used for connecting to a water meter or the like arranged in a meter box buried in the ground.

[0002]

2. Description of the Related Art In general houses except high-rise houses, the water supply from the water supply is usually a water meter box in which a water pipe a is buried outside each house as shown in FIG. By connecting the telescopic stop cock V and the water meter M arranged there in that order by guiding it into the inside of b, and connecting the water supply pipe c passing through the water meter M to the water tap in the house. Done.

An extendable water stop valve V connected to the upstream side of the water meter M and arranged in the water meter box b is usually formed in a tubular shape as shown in FIG. An inlet side joint 10 is provided at one end side of the body 1, and an outlet side joint 11 is provided at the other end side of the guide cylinder 12 provided in the body 1 so as to be watertight and slidable. A sliding cylinder 13 to be fitted is provided, and the outlet side joint 1 is provided on the outer end side thereof.
1 is assembled and provided in the expansion joint 1a that expands and contracts with respect to the body 1 by the sliding operation of the sliding cylinder 13. Inside the body 1, the joint 10 on the inlet side and the joint 11 on the outlet side are provided.
A valve chamber 14 is provided between the expansion joint 1a and the joint 10 on the inlet side in the middle of a flow path communicating with the ball valve 15 and a spherical inner wall surface on the outer peripheral surface thereof. To store a water shutoff valve mechanism 17 including a valve seat 16 in contact with the valve seat 16, project a valve shaft 18 connected to the ball valve 15 thereof to the outer surface side of the body 1, and assemble a handle 19 to the outer end side thereof. so,
The opening and closing of the flow path is controlled by the turning operation of the handle 19.

This is because the water meter M, which is arranged in the water meter box b and connected to the water pipe a and the water supply pipe c, is required to be replaced once every seven years. For the sake of simplicity, the joint 11 on the outlet side of the water stop valve V is configured as an expansion joint 1a, and the expansion / contraction operation of the expansion joint 1a allows desired adjustment of the dimension in the connecting direction. Also, when the telescopic water stop valve V is used as a water stop valve for other devices, it is possible to easily remove and combine the devices for maintenance.

[0005]

The water supply through the water meter M installed in the above-mentioned water meter box b buried outdoors is a stable and direct water supply to high-rise houses of high-rise houses. By increasing the water supply pressure in order to be able to
It has become necessary to reduce the pressure to about 3 Kgf / cm ² by connecting the pressure reducing valve d before the above.

In a high-rise house, a water meter is provided in an exposed state for each house of each floor, and a piping space for connecting the pressure reducing valve d is sufficiently prepared, so that Between the high-rise and low-rise houses,
Although there is no problem in connecting the pressure reducing valve d so as to eliminate the difference in water supply pressure, in a general house in which water is supplied through the water meter M installed in the water meter box b buried outdoors, Since the longitudinal dimension of the water meter box b, which is the dimension in the longitudinal direction, is standard, there is no room to incorporate the pressure reducing valve d, and the piping work for connecting the pressure reducing valve d becomes difficult.

That is, the water meter box b has a standard size in which the telescopic stop cock V connected to the upstream side of the water meter M and the water meter M are accommodated side by side in the longitudinal direction of the box b. It is made of a thing, and the pressure reducing valve d
I can't afford to incorporate.

For this reason, if the pressure reducing valve d is forcibly connected, it will be connected to the water pipe a outside the upstream side of the water meter box b.
As a result, the connection of the pressure reducing valve d is postponed. From this, the water hammer phenomenon frequently occurs, and it is difficult to adjust the flow rate.

The present invention has been made in order to solve the above-mentioned problems that have occurred in the conventional means, and the water meter box b made to the standard size can be prepared without remaking it. It is an object of the present invention to provide a new means for allowing the pressure reducing valve d to be incorporated in the b together with the water meter M and the telescopic water stop valve V.

[0010]

As a means for achieving the above-mentioned object, the present invention forms an inlet joint on one end side of a body and an outlet joint on the other end side of an expansion joint. In a telescopic stopcock with a water shut-off valve mechanism provided inside the body and a handle for operating the water shut-off valve mechanism provided on the outer surface side of the body, the telescopic fit is slidably fitted into the guide tube of the body. Inside the sliding cylinder of the joint, a cylindrical valve that is pushed out to the primary side by the pressure on the secondary side received by the pressure-sensitive plate, a decompression spring that pushes out the cylindrical valve to the secondary side, and a protruding end of the cylindrical valve are formed. The present invention proposes a telescopic stopcock that incorporates a pressure reducing valve mechanism including valve seats that are fixed to the sliding cylinder so as to face the valve portion.

[0011]

This means of the present invention utilizes the sliding cylinder 13 of the expansion joint of the expansion type water stop valve V incorporated in the water meter box b, and the cylindrical valve type is used in the inner cavity of the sliding cylinder 13. Since the pressure reducing valve mechanism v is incorporated, the pressure reducing valve is connected to the water supply pipe c connected through the water meter M and the water stop valve V. Therefore, the water meter box b remains in the standard size. The pressure reducing valve can be connected in the box b.

[0012]

Embodiments Next, embodiments will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 3 is a vertical cross-sectional side view of an expansion type water stop valve V according to the present invention. In FIG. 3, 1 is a body, 1a is an expansion joint, and w is a sliding cylinder 13 of the expansion joint 1a. An elliptic cylinder valve type pressure reducing valve mechanism is shown.

The telescopic stopcock V of the telescopic type is provided with a joint 10 on the inlet side at one end side in the axial direction which is the primary side X of the body 1 formed in a tubular shape, and at the other end side which is the secondary side Y. Provides a joint 11 on the outlet side with a sliding cylinder 13 on the inner peripheral side of a guide cylinder 12 provided on the body 1 so as to be watertight and slidably fitted, and to the outer end side of the sliding cylinder 13. By assembling the side joint 11, the expansion joint 1a that expands and contracts with respect to the body 1 by sliding of the sliding cylinder 13 is configured and installed. A valve chamber 14 is provided inside the body 1 between the expansion joint 1a and the joint 10 on the inlet side. Here, a ball valve 15 and a valve seat 16 whose inner wall surface slidably contacts the outer peripheral surface of the ball valve 15. The water shut-off valve mechanism 17 is stored, and the handle 19 is connected by projecting the outer end side of the valve shaft 18 connected to the ball valve 15 thereof to the outer surface side of the body 1. Then, as a result of opening and closing the flow path in the body 1 between the joint 10 on the inlet side and the joint 11 on the outlet side by the operation of the handle 19 and controlling the flow rate, the conventional expansion and contraction is performed. It is no different from the type V water stopcock. Note that the water shutoff valve mechanism 17 is not limited to the case where the ball valve 15 and the valve seat 16 that surrounds the ball valve 15 are used, but a butterfly valve (not shown) and a valve seat (not shown) that faces the butterfly valve, etc. Any suitable configuration may be used.

However, in the body 1 of the expansion type water stop valve V, the sliding cylinder 1 of the expansion joint 1a assembled to the body 1 is installed.
Utilizing the lumen of 3, there is a tubular valve type pressure reducing valve mechanism w
Is incorporated.

As shown in FIG. 4, this tubular valve type pressure reducing valve mechanism w is continuous with the sliding cylinder 13 on the proximal end side of the neck having a reduced diameter where the outlet side joint 11 is assembled. The pressure sensitive plate 2 formed in a ring shape is provided in the inner cavity of the main body 130 whose diameter is increased.
It is inserted through the watertight holding member 20 so as to freely slide in the axial direction, the shaft center is aligned with the watertight holding member 20, and the base end side of the tubular valve 3 is integrally or integrally connected to the tip end. Side is primary side X
The valve portion 30 is formed on the edge of the protruding end.

The central hole of a spring washer 4 formed in an annular shape is slidably inserted into the outer periphery of the tip end side of the cylindrical valve 3 through a watertight holding member 40, and the spring washer 4 The outer peripheral side is watertightly fitted to the inner peripheral surface of the main body portion 130 of the sliding cylinder 13 via the watertight holding member 41, and the secondary side end surface of the outer peripheral edge portion is connected to the inner peripheral surface of the main body portion 130. Abut on the formed step 131, and in that state, the primary side X of the outer peripheral edge
The spacer 42 formed in a ring shape is abutted against the end face of the main body 1 located on the primary side X of the spacer 42.
A disc-shaped valve seat fitting 5 having a water passage hole 50 at its peripheral edge is screwed or caulked to the open end of 30.
Alternatively, the spring washer 4 is fixed at a position where it abuts against the step portion 131 by fitting in a fixed state with a snap ring and pushing the spacer 42 with the valve seat fitting 5.
At this time, the spacer 42 may be integrally formed with the spring washer 4 or may be integrally formed with the valve seat fitting 5.

A pressure-reducing spring 6 which is inserted in advance before fitting the spring washer 4 is provided between the spring washer 4 and the pressure-sensitive plate 2 and the pressure-sensitive plate 2 is attached to the secondary side. The valve seat fitting 5, which is stretched so as to be pushed out toward Y, is formed at the end face of the secondary side Y of the valve seat fitting 5 at the opening end edge of the tip end side of the tubular valve 3 described above. And a valve seat 51 facing the
The pushing pressure F of the pressure reducing spring 6 is set to a desired value in relation to the effective area S of the pressure receiving surface of the pressure sensitive plate 2 and the pressure set on the secondary side Y.

As a result, the joint 10 on the inlet side is connected to the water pipe a and the joint 11 on the outlet side is connected to the water meter M.
By connecting to the water supply pipe c via the tap water, the tap water having the pressure P1 is supplied from the water pipe a by opening the water shutoff valve mechanism 17.
It flows in through the water holes 50 of the valve seat fitting 5, and further from the space between the valve seat 51 and the valve portion 30 of the tubular valve 3 to the joint 11 on the outlet side via the inner cavity of the tubular valve 3. It will flow toward you. At this time, when the amount of water flowing into and flowing through the secondary side Y is large, the pressure P2 on the secondary side Y increases, whereby the pressure receiving area S of the pressure sensitive plate 2 and the pressure P2 on the secondary side Y are increased. When the product becomes larger than the spring pressure F set in the pressure reducing spring 6, the tubular valve 3 is pushed out toward the valve seat 51, and the tubular valve 3
The flow rate of the secondary side Y is reduced by narrowing the interval between the valve portion 30 and the valve seat 51 of the secondary side Y to reduce the pressure P2 of the secondary side Y. It will be kept constant.

When the amount of water flowing to the secondary side Y becomes zero due to the closing of the faucet connected to the water supply pipe c, the pressure P2 on the secondary side Y rises, which serves as a pressure sensitive portion of the tubular valve 3. The force P2 × S for pushing the pressure sensitive plate 2 to the primary side X becomes large, and the cylindrical valve 3
Is pushed to the primary side X, the valve portion 30 at the tip is pressed against the valve seat 51, the inflow of water to the secondary side Y is stopped, and the pressure P2 of the secondary side Y is maintained within the set pressure. Become.

[0021]

As described above, the expansion type stopcock according to the present invention uses the inner cavity of the sliding cylinder 13 of the expansion joint 1a assembled to the body 1 thereof to form a tubular shape there. Since the pressure reducing valve is incorporated into the body 1 of the valve type pressure reducing valve mechanism w by incorporating it, the pressure reducing valve can be incorporated without changing the size of the body 1, so that it can be manufactured to the standard size. Without recreating the water meter box b, the water stop box and water meter M are installed in the box b.
In addition, a pressure reducing valve can be installed.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a laid water meter box and a water faucet and a water meter arranged inside the water meter box.

FIG. 2 is a vertical sectional side view of a telescopic water stopcock.

FIG. 3 is a vertical cross-sectional side view of a telescopic stopcock according to the present invention.

FIG. 4 is a vertical cross-sectional side view of the same water stopcock in a state in which it is an expansion joint incorporating a pressure reducing valve mechanism and is pulled out from the body of the water stopcock.

[Explanation of symbols]

V ... Stopcock, X ... Primary side, Y ... Secondary side, M ... Meter,
a ... water pipe, b ... meter box, c ... water supply pipe, d
... Pressure reducing valve, w ... Pressure reducing valve mechanism, 1 ... Body, 1a ... Expansion joint, 10 ... Joint for inlet, 11 ... Joint for outlet, 12 ...
Guide cylinder, 13 ... Sliding cylinder, 130 ... Main body portion, 131 ... Step portion, 14 ... Valve chamber, 15 ... Ball valve, 16 ... Valve seat, 17 ...
Water stop valve mechanism, 18 ... Valve shaft, 19 ... Handle, 2 ... Pressure sensitive plate, 20 ... Watertight holding member, 3 ... Cylindrical valve, 30 ... Valve part, 4
... Spring washer, 40/41 ... Watertight holding member, 42 ... Spacer, 5 ... Valve seat fitting, 50 ... Water passage hole, 51 ... Valve seat, 6 ...
Decompression spring.

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[Procedure amendment]

[Submission date] October 26, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

The telescopic stopcock V of the telescopic type is provided with a joint 10 on the inlet side at one end side in the axial direction which is the primary side X of the body 1 formed in a tubular shape, and at the other end side which is the secondary side Y. Is provided with a slide cylinder 13 for fitting the outlet side joint 11 on the inner peripheral side of a guide cylinder 12 provided in the body 1 so as to be watertight and slidably fitted, and to the outer end side of the slide cylinder 13. By assembling the side joint 11, the expansion joint 1a that expands and contracts with respect to the body 1 by sliding of the sliding cylinder 13 is configured and installed. A valve chamber 14 is provided inside the body 1 between the expansion joint 1a and the joint 10 on the inlet side. Here, a ball valve 15 and a valve seat 16 whose inner wall surface slidably contacts the outer peripheral surface of the ball valve 15. The water shut-off valve mechanism 17 is stored, and the handle 19 is connected by projecting the outer end side of the valve shaft 18 connected to the ball valve 15 thereof to the outer surface side of the body 1. Then, as a result of opening and closing the flow path in the body 1 between the joint 10 on the inlet side and the joint 11 on the outlet side by the operation of the handle 19 and controlling the flow rate, the conventional expansion and contraction is performed. It is no different from the type V water stopcock. Note that the water shutoff valve mechanism 17 is not limited to the case where the ball valve 15 and the valve seat 16 that surrounds the ball valve 15 are used, but a butterfly valve (not shown) and a valve seat (not shown) that faces the butterfly valve, etc. Any suitable configuration may be used. ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 7, 1995

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

Claims (2)

[Claims] 1. A joint 1 for inlet is provided on one end side of the body 1, a joint 11 for outlet is formed on the other end side of the expansion joint 1a, and a water shutoff valve mechanism 17 is provided inside the body 1. In the expansion type water stop valve V in which the handle 19 for operating it is provided on the outer surface side of the body 1, inside the sliding cylinder 13 of the expansion joint 1a slidably fitted in the guide cylinder 12 of the body 1. ,
The cylindrical valve 3 pushed out to the primary side X by the pressure P2 on the secondary side Y received by the pressure sensitive plate 2, the decompression spring 6 pushing the cylindrical valve 3 to the secondary side Y, and the protruding end of the cylindrical valve 3 are formed. Valve part 3
A telescopic stopcock incorporating a pressure reducing valve mechanism w composed of a valve seat 51 and the like which is fixed to the sliding cylinder 13 so as to face 0. 2. An expansion joint 1a provided on the other end side of the body 1.
In the sliding cylinder 13 of the, from the opening facing the primary side X,
The cylindrical valve 3 continuous with the pressure sensitive plate 2, the pressure reducing spring 6, the spring washer 4 and the valve seat fitting 5 are loaded in that order to form the valve seat fitting 5
2. The telescopic stopcock according to claim 1, wherein the tubular valve 3, the pressure reducing spring 6 and the spring washer 4 are assembled in the sliding cylinder 13 by mounting the sliding valve 13 on the sliding cylinder 13. .