JP2739150B2 - Telescopic stopcock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a telescopic stopcock used to connect to a water meter or the like disposed in a meter box buried underground.

[0002]

2. Description of the Related Art In general houses except high-rise houses, water is usually supplied from a water supply by a water meter box in which a water pipe a is buried outside the house as shown in FIG. b, the telescopic stopcock V provided there and the water meter M are connected in that order, and the water supply pipe c passing through the water meter M is connected to the water tap in the house. Done.

A telescopic water stopcock V connected to the upstream side of the water meter M and disposed in the water meter box b is usually formed in a cylindrical shape as shown in FIG. An inlet-side joint 10 is provided at one end of the body 1, and an outlet-side joint 11 is provided at the other end of the body 1 slidably while maintaining watertightness on the inner peripheral side of a guide tube 12 provided in the body 1. A sliding cylinder 13 to be fitted is provided, and the joint 1 on the outlet side is provided on the outer end side thereof.
1 is assembled and provided in an expansion joint 1a that expands and contracts with respect to the body 1 by the sliding operation of the sliding cylinder 13. The joint 10 on the inlet side and the joint 11 on the outlet side are provided in the body 1.
A valve chamber 14 is provided between the expansion joint 1a and the inlet-side joint 10 in the middle of a flow path communicating with the ball valve 15 and a spherical inner wall surface is slid on the ball valve 15 and the outer peripheral surface thereof. A water shutoff valve mechanism 17 comprising a valve seat 16 in contact with the housing is stored, and a valve shaft 18 connected to the ball valve 15 is protruded toward the outer surface of the body 1 and a handle 19 is attached to the outer end thereof. so,
The opening and closing control of the flow path is performed by rotating the handle 19.

[0004] This is because the water meter M which is disposed 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 stopcock V is configured as an expansion joint 1a, and the expansion and contraction operation of the expansion joint 1a allows adjustment of the dimension in the connection direction as desired. This is because, even when the telescopic stopcock V is used as a stopcock for another device, removal and combination for maintenance of the device can be easily performed similarly.

[0005]

Water supply through the water meter M provided in the water meter box b buried outdoors is directly and stably supplied to a high-rise house of a high-rise house. In order to be able to do so, the water supply pressure has been increased,
It has become necessary to reduce the pressure to about 3 kgf / cm ² by connecting the pressure reducing valve d before the pressure reduction.

[0006] In a high-rise house, a water meter is provided in an exposed state for each house on each floor, and a sufficient piping space for connecting a pressure reducing valve d is provided. Between the low- and high-level houses,
There is no problem in connecting the pressure reducing valve d so that there is no difference in water supply pressure, but in a general house where water is supplied via the water meter M provided in the water meter box b buried outdoors, Since the vertical dimension of the water meter box b, which is a longitudinal dimension, is a standard, there is no room for incorporating the pressure reducing valve d, and piping work for connecting the pressure reducing valve d has a difficult problem.

That is, the water meter box b has a standard size in which a telescopic water stopcock V and a water meter M connected to the upstream side of the water meter M are accommodated in parallel in the vertical direction of the box b. It is made of
Can not afford to incorporate.

For this reason, when the pressure reducing valve d is forcibly connected, it is connected to the water pipe a outside the water meter box b upstream of the water meter box b.
As a result, the connection of the pressure reducing valve d is postponed. As a result, problems such as frequent occurrence of the water hammer phenomenon and difficulty in adjusting the flow rate have arisen.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem occurring in the conventional means. The water meter box b having a standard size can be used without rebuilding the water meter box. It is an object of the present invention to provide a new means for allowing a pressure reducing valve d to be incorporated together with a water meter M and a telescopic stopcock V in b.

[0010]

According to the present invention, as a means for achieving the above object, an inlet joint is provided at one end of the body and an outlet joint is formed at the other end as an expansion joint. Telescopic stopcock provided with a water shutoff valve mechanism inside the body and an operating handle for the waterstop valve mechanism provided on the outer surface side of the body. Inside the sliding cylinder of the joint, a cylindrical valve that is pushed out to the primary side by the pressure of the secondary side received by the pressure sensitive plate, a pressure reducing spring that pushes out the cylindrical valve to the secondary side, and a protruding end of the cylindrical valve The present invention proposes a telescopic water stopcock incorporating a pressure reducing valve mechanism including a valve seat provided to be fixed to a sliding cylinder in opposition to the valve portion.

[0011]

This means of the present invention utilizes a sliding cylinder 13 of an expansion joint of a telescopic water stopcock V incorporated in a water meter box b, and a cylindrical valve type valve is provided in the bore of the sliding cylinder 13. By installing the pressure reducing valve mechanism v, the pressure reducing valve is connected to the water supply pipe c connected via the water meter M and the water stopcock V, so that the water meter box b is kept at the standard size. The pressure reducing valve can be connected in the box b.

[0012]

Next, an embodiment 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 longitudinal sectional side view of a telescopic stopcock V according to the present invention. In FIG. 3, reference numeral 1 denotes a body, 1a denotes an expansion joint, and w denotes a sliding cylinder of the expansion joint 1a. 1 shows a pressure reducing valve mechanism of a cylindrical valve type.

The telescopic stopcock V is provided with an inlet joint 10 at one end in the axial direction as the primary side X of the cylindrical body 1 and at the other end as the secondary side Y. Is provided with a sliding cylinder 13 which fits the joint 11 on the outlet side on the inner peripheral side of the guide cylinder 12 provided on the body 1 in a watertight manner and slides freely. By attaching the joint 11 on the side, 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 between the expansion joint 1a and the inlet-side joint 10 inside the body 1, and a ball valve 15 and a valve seat 16 whose inner wall surface is in sliding contact with the outer peripheral surface thereof are provided here. And a handle 19 is connected by projecting an outer end side of a valve shaft 18 connected to the ball valve 15 to an outer surface side of the body 1. The opening and closing of the flow path in the body 1 between the inlet-side joint 10 and the outlet-side joint 11 and the control of the flow rate are controlled by operating the handle 19 as in the prior art. It is no different from the type stopcock V. The water stop valve mechanism 17 is not limited to the case where the ball valve 15 and the valve seat 16 surrounding the ball valve 15 are used, but may be a butterfly valve (not shown) and a valve seat (not shown) opposed thereto. , And may have an appropriate configuration.

In the body 1 of the telescopic stopcock V, the sliding cylinder 1 of the expansion joint 1a attached thereto is provided.
Utilizing the lumen of No. 3, there is a cylindrical valve type pressure reducing valve mechanism w
Is incorporated.

As shown in FIG. 4, the cylindrical valve-type pressure reducing valve mechanism w is connected to the sliding cylinder 13 at the base end side of the reduced diameter neck to which the outlet joint 11 is attached. The ring-shaped pressure-sensitive plate 2 is inserted into the inner cavity of the expanded main body portion 130.
The cylindrical valve 3 is inserted so as to slide freely in the axial direction via the watertight holding member 20, the axial center thereof is aligned, and the proximal end of the cylindrical valve 3 is integrally or integrally connected and connected. Primary side X
, And the valve portion 30 is formed at the edge of the protruding end.

A center hole of an annular spring washer 4 is slidably inserted through a watertight holding member 40 around the distal end of the cylindrical valve 3. The outer peripheral side is water-tightly 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 end surface of the outer peripheral edge portion is fitted to the inner peripheral surface of the main body portion 130. It abuts against the formed step 131, and in that state, the primary side X of the outer peripheral edge portion
The spacer 42 formed in a ring shape abuts against the end face of the main body 1 located on the primary side X of the spacer 42.
30 is screwed or caulked with a disc-shaped valve seat fitting 5 having a water-permeation hole 50 at the peripheral edge thereof at the opening end of the disc 30.
Alternatively, the spring washer 4 is fixed at a position where it abuts against the step 131 by fitting the spacer 42 in the fixed state with a retaining ring or the like and pushing the spacer 42 with the valve washer 5.
At this time, the spacer 42 may be formed so as to be integrally continuous with the spring washer 4 or may be formed so as to be integrally continuous with the valve washer 5.

Further, before the spring washer 4 is fitted, the pressure-reducing spring 6, which is inserted beforehand, is inserted between the spring washer 4 and the pressure-sensitive plate 2 and the pressure-sensitive plate 2 is connected to the secondary side. The valve seat 5 is provided with a valve portion 30 formed on the end face of the secondary side Y of the valve seat 5 at the opening edge on the distal end side of the cylindrical valve 3. And a valve seat 51 facing the
The above-described configuration is such that the pushing pressure F of the pressure reducing spring 6 is set as desired 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.

Thus, 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.
Is connected to the water supply pipe c through the opening of the water stop valve mechanism 17 so that the tap water having the pressure P1 is supplied from the water pipe a.
The water flows through the water holes 50 of the valve seat 5, and further flows from the space between the valve seat 51 and the valve portion 30 of the cylindrical valve 3 to the joint 11 on the outlet side through the lumen of the cylindrical valve 3. It will flow toward you. At this time, if the amount of water flowing into and flowing into the secondary side Y is large, the pressure P2 on the secondary side Y rises, thereby causing the pressure receiving area S of the pressure sensitive plate 2 and the pressure P2 on the secondary side Y to increase. When the product is larger than the spring pressure F set for the pressure reducing spring 6, the cylindrical valve 3 is pushed out toward the valve seat 51, and the cylindrical valve 3
The distance between the valve portion 30 and the valve seat 51 is reduced to reduce the amount of flowing water, and the pressure P2 on the secondary side Y and the amount of flowing water are balanced to reduce the pressure P2 on the secondary side Y. It will be kept constant.

When the amount of water flowing to the secondary side Y becomes zero by closing a faucet or the like connected to the water supply pipe c, the pressure P2 on the secondary side Y increases, and the pressure-sensitive portion of the cylindrical valve 3 becomes. The force P2 × S for pushing out the pressure sensitive plate 2 to the primary side X increases, and the cylindrical valve 3
Is pushed out to the primary side X so that the valve portion 30 at the tip is pressed against the valve seat 51 to stop the flow of water into the secondary side Y so that the pressure P2 of the secondary side Y is kept within the set pressure. Become.

[0021]

As described above, the telescopic water stopcock according to the present invention utilizes the inner space of the sliding cylinder 13 of the expansion joint 1a attached to the body 1 of the water stopper to form a cylindrical water stopper. By incorporating a valve-type pressure reducing valve mechanism w, the pressure reducing valve is built into the body 1 of the valve type w. Therefore, the pressure reducing valve can be built in without changing the dimensions of the body 1, so that it is manufactured to the standard size. The water stop valve and the water meter M are inserted in the water meter box b without rebuilding the water meter box b.
In addition, a pressure reducing valve can be incorporated.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional side view of a telescopic stopcock.

FIG. 3 is a longitudinal sectional side view of a telescopic water stopcock according to the present invention.

FIG. 4 is a longitudinal sectional side view of the water stopcock with an expansion joint incorporating a pressure reducing valve mechanism, in a state where the water stopcock is pulled out of a water stopcock body.

[Explanation of symbols]

V: water 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 ... inlet joint, 11 ... outlet joint, 12 ...
Guide cylinder, 13: sliding cylinder, 130: main part, 131: stepped part, 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 portion, 4
... spring washers, 40/41 ... watertight holding members, 42 ... spacers, 5 ... valve washers, 50 ... water holes, 51 ... valve seats, 6 ...
Spring for decompression.

Claims (2)

(57) [Claims] 1. An inlet joint 10 is provided at one end of the body 1 and an outlet joint 11 is formed at the other end of the expansion joint 1a, and a water stop valve mechanism 17 is provided inside the body 1. In a telescoping stopcock V provided with an operating handle 19 on the outer surface side of the body 1, a sliding stopper 13 of an expansion joint 1 a is slidably fitted to the guide cylinder 12 of the body 1. ,
A cylindrical valve 3 pushed out to the primary side X by the pressure P2 of the secondary side Y received by the pressure sensitive plate 2, a pressure reducing spring 6 pushing the tubular valve 3 out to the secondary side Y, and a projecting end of the cylindrical valve 3 Valve part 3
A telescoping stopcock incorporating a pressure reducing valve mechanism w composed of a valve seat 51 and the like provided fixed to the sliding cylinder 13 so as to face 0. 2. An expansion joint 1a provided at the other end of the body 1.
From the opening toward the primary side X of the sliding cylinder 13 of
A cylindrical valve 3 continuous with the pressure sensitive plate 2, a pressure reducing spring 6, a spring washer 4, and a valve washer 5 are inserted in that order, and the valve washer 5 is mounted.
2. The telescopic water stopcock according to claim 1, wherein the cylindrical valve 3, the pressure reducing spring 6, the spring washer 4, and the like are assembled in the sliding cylinder 13 by being mounted on the sliding cylinder 13. .