JPH04151090A - Exchanging and hole spreading method for non-water failure type saddle water dividing faucet and water stopping tool - Google Patents

Abstract

PURPOSE:To mount a new snap tap in the position of an existing snap tap in a non-water failure state by closing a water dividing port with a water stop tool through utilization of an existing non-water failure type saddle snap tap, removing an existing snap tap from a main pipe with this state, securely mounting a new snap tap on the main pipe, and contracting a packer to pull off the water stop tool. CONSTITUTION:A valve body 2 of an existing snap tap is closed, a water stop tool is inserted up to a valve body 2 in a standing-upright hole (a) and inserted to a position where the upper part of a packer 7a of the water stop tool does not pass through an existing water dividing hole (d). The expansion part of the packer 7a closes the water dividing hole (d) to stop water. A water dividing faucet is pulled up along an external spindle 7 to pull it out. A new water dividing faucet is inserted in an engaged state in a standing-upright hole, and a saddle is fixed to a body. An internal spindle is lowered to an initial position, a stopper 11 is contracted, and the packer 7a is restored to its original shape through restoration elasticity. A nut 6 is unfastened to pull up a whole water stop tool from a main pipe. As a result, there is no need for a useless water dividing hole to reduce the strength of the main pipe, and an increased life is provided for the main pipe.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to the replacement of a non-stop type saddle water distribution faucet already installed in a water supply main, the expansion of a water distribution hole, and the replacement of a water distribution hole that is already installed in a water main. This invention relates to a construction method and device for installing faucets without interruption of water supply.

[Conventional technology]

Water supply mains (hereinafter simply referred to as "mains") that are generally buried underground
When installing a branch pipe to a branch pipe (hereinafter simply referred to as a "water diversion valve"), use a saddle water distribution faucet (hereinafter simply referred to as a "water diversion faucet") that can be drilled to allow water to flow through the main pipe without interruption. However, due to the subsequent increase in the number of housing units, situations often arise where large faucets must be replaced. However, in the conventional construction method, each part of the existing water distribution faucet is closed, another saddle water distribution faucet is installed nearby, a new hole of the desired diameter is drilled through the water distribution faucet, and then this water distribution faucet is closed. In addition to the above, when replacing diversion faucets that are aging and leaking,
The saddles of the replacement faucet should be lined up in a lightly tightened state in contact with the saddles of the old diversion faucet, and the saddles of the old diversion faucet can be loosened to move both in parallel, or alternatively, the saddles of the old diversion faucet can be loosened to move the two in parallel. Another known method was to drive the water into the water diversion hole through the upright hole of the water faucet to temporarily stop the water, and then replace the water faucet.

[Issues with conventional technology]

Among these conventional construction methods, according to the former method, in order to use the existing branch pipe as effectively as possible, the new water diversion hole should be drilled as close as possible to the previous water diversion hole. As a result, the strength of the area between the old and new water diversion holes was not only noticeably weakened, but also cracks were more likely to occur between the two holes, resulting in a significant shortening of the life of the main pipe. .

However, there was still the problem that connecting the newly installed branch taps with the existing branch pipes required a lot of effort.

In addition, with the latter two, unless the main water supply was cut off, it was inevitable that the work would be exposed to a considerable amount of water, which not only made the replacement work extremely difficult, but also caused problems in the water diversion holes. When fitting a rust sleeve, etc., it is necessary to accurately align the center of water flow between the previous water diversion hole and the upright hole of the new water faucet.
This method was extremely difficult, and in the end, it could not be expected to be applied to locations that require the installation of rust-proof sleeves.

[Means to be solved by the invention]

In order to solve the above-mentioned problems, the present invention utilizes an existing water distribution faucet to provide a water supply device that is equipped with a puff car that can be expanded and contracted at the tip of the upright hole. After inserting the bunker into the main pipe, elastically deforming the bunker to close the water diversion hole from the inner surface;
The process of removing the old water faucet from the main pipe with the water stop device including the packer attached to the water main pipe hole, and the process of installing the new water faucet by inserting it into the water stop device described above. The present invention provides a method for replacing a water faucet, which includes a step of attaching and fixing the water stopper to a pipe, and a step of shrinking the bunker and extracting the water stopper.

The present invention also provides a diversion hole expansion method that includes the step of expanding the old diversion hole by a known method using a newly installed diversion faucet after performing each of the above steps. It is. As a water stopper exclusively used for the replacement method of the present invention, a hollow spindle (
(hereinafter referred to as the "outer spindle"), a rising spindle (hereinafter referred to as the "inner spindle") that can be raised and lowered by a certain amount in a watertight manner within the inner hole of the Yogi spindle, and a chuck ring that supports the upper end of the outer spindle in a watertight manner. It consists of an attachment that can be freely screwed onto the outer periphery of the upright hole of the water distribution faucet, and a packer is fitted to the lower end of the outer spindle, while an attachment with a diameter slightly smaller than the diameter of the water distribution hole of the main pipe is attached to the lower end of the inner spindle. A puffer retainer is provided between the bunker and a ring-shaped stopper that expands and contracts along the circumferential surface of the reverse taper integrally connecting the bottom flange and the reverse taper integrally, and furthermore, at the upper end of the inner spindle, The present invention provides a water stopper for replacing a water faucet, in which a rotating shaft with which a handle member is detachable can be fitted.

[For production]

The water distribution faucet replacement method according to the present invention is characterized by the fact that the old water diversion hole is self-occluded from the inner surface of the main pipe.
It has a special effect in that a new water distribution faucet can be easily and safely installed at the location of the old water distribution faucet while water is not cut off.

In addition, the water stop device has an integrated inverted taper at the tip of the inner spindle that moves up and down in a watertight manner inside the outer spindle, and a stopper that can be expanded and contracted along the inverted taper, making it easy to attach the tip portion including the packer to the old water faucet. In addition to being able to be inserted and removed at any time, the packer also reliably prevents the packer from being removed upwards due to the internal pressure of the main pipe when the water is cut off.

〔Example〕

Hereinafter, in order to further clarify the structure of the present invention, first, the water stopper dedicated to the construction method of the present invention will be explained.
In the figure, 1 is the faucet of a T-shaped water faucet, and 2 is the vertical hole 1a)
A ball-shaped valve body is rotatably fitted into the intersection of the upright hole 1a) and the branch hole 10 and can open and close the opening 1 separately or both at the same time; 3 indicates the operation of the valve body; The handle is attached to the saddle, and 4 is a saddle with the lower end of the faucet erected on the main water supply pipe (c), which has been widely used as this type of non-stop water distribution type saddle faucet.

On the other hand, 5 is an attachment of a water stop device, which will be described later, which is screwed onto the upper end of the upright hole (A) in place of the cap (not shown) on the water faucet, 6 is its nut, and 7 to 12 shows a water stopper, of which 7 has its upper end watertightly fixed via a chuck ring 5a by tightening the nut 6, and can pass through the upright hole (a) of the water faucet. An outer spindle 8 consisting of an outer diameter is watertightly fitted into a hollow hole of the outer spindle 7, and an inner spindle that can be raised and lowered by a certain amount in a non-rotating state within the hollow. It is a handle member that is removably engaged with a rotating shaft 9 that has an internal thread 9a that is threaded into the upper end threaded portion 8a.

Therefore, when raising and lowering the inner spindle 8, when the handle member 10 is engaged with the rotating shaft 9 and the handle is rotated in the forward or reverse direction, the inner thread 9a of the rotating shaft that rotates together with the handle member 10 is rotated. Due to the threaded engagement with the threaded portion 8a of the inner spindle, the inner spindle 8 can be freely raised and lowered in a non-rotating state.

An upper half of a cylindrical packer 78 made of a flexible material such as rubber is attached to the lower end of the outer spindle 7, and an inverted tapered integral body 8b extending downward is attached to the lower end of the inner spindle 8. The bottom plate 8c has a diameter that allows passage through at least the old water diversion hole. On the other hand, a stopper 11 having a structure as described later is fitted into the inverted tapered integral body 8b, and a packer presser 12 is disposed between the stopper 11 and the lower end of the bunker 7a.

The connection structure of the bottom 8c at the lower end of the inner spindle 8 and the reverse taper integral body 8b is such that each member is integrally formed by casting, forging, explosion welding, etc., or by integrally forming a reverse taper integral body as illustrated in FIG. The lower end of the inner spindle 8 may be passed through the inner spindle 8b and the bottom holder 8c, and fixed with a nut 8d.

By the way, one configuration of the stopper 11 will be described with reference to FIG. 3. For example, a groove 11a (see FIG.
A ring-shaped disk made of a ring-shaped disk is divided into 2 to 4 units 11b with a constant width in the diameter direction, and each unit is joined as shown in FIG. B, and an elastic ring is inserted into the groove 11a. By fitting 11c, this becomes the above-mentioned reverse taper integral part 8.
While moving along the circumferential surface of b, its diameter can be expanded or contracted by a certain amount.

In addition, numeral 13 in the figure indicates a sealing member fitted to each part.

Next, the procedure of the water faucet replacement method of the present invention using the water stopper described above will be described.

■ Close valve body 2 of the old water faucet to be replaced and open the upright hole] a)
The camp at the upper end opening is removed, and the attachment 5 previously fitted to the water stopper is attached to this part.

(2) Insert the water stopper into the upright hole A) up to the vicinity of the valve body 2, open the valve body, and insert the water stopper until the upper part of the packer 7a does not pass through the old water diversion hole.

- Tighten the nut 6 to tighten the chuck ring 5a and support the upper end of the outer spindle.

■ Attach the handle member 1o to the rotating shaft 9, rotate the handle, and pull up the inner spindle 8.

As a result, [a] the stopper 11 comes into sliding contact with the reverse taper unit 8b, moves toward the bottom 8c, and gradually expands.

(b) The stopper 11 is clamped and fixed between the buffing car presser 12 and the bottom holder 8c.

(c) In response to the rising force of the inner spindle 8 which is further pulled up, the backer presser 12 pushes up and expands the bunker 7a.

(b) The expanded portion of the packer 78 closes the inner edge of the water diversion hole (b) to stop water.

■ Remove bolt and bolt from saddle 4.

■ Remove the handle member 10, reverse the nut 6, loosen the chuck ring 5a, and attach the water faucet to its attachment 5.
At the same time, pull up along the outer spindle 7 and remove it.

■ Attach the attachment to the upright hole of the new water faucet,
The upright hole is inserted through the outer spindle 7 to fix the saddle to the main pipe.

(2) After tightening the chuck ring 5a again by turning the nut 6, attach the handle member 10 to the rotating shaft 9, rotate it in the opposite direction, and lower the inner spindle to the initial position. As a result, the stopper 11 is separated from the bottom rest 8c and contracts, and the packer 7a returns to its original shape with its restoring elasticity.

■ Gather nuts 6 and pull up the entire water stopper from the main pipe.

[Phase] When the lower end of the water stopper passes through the valve body of the new water faucet, close the valve body and completely remove the remainder of the water stopper from the upright hole.

■ Install the camp in the upper opening of the upright hole (if no branch pipe is installed in this area).

In addition, if you wish to expand the hole diameter of the old water diversion hole after installing a new water diversion hole according to the above procedure, after [phase] of the above procedure, fix an appropriate drill to the upper end of the upright hole and enlarge it. All you have to do is do the hole work.

Furthermore, FIG. 4 shows another embodiment of a handle member 10 for raising and lowering the inner spindle 8, which includes the water stopper 7 to
The attachment 5, chuck ring 5a, and nut 6 installed in the upright hole of the new and old water faucet 12 are the same as those in the previous embodiment, but the outer spindle 7 passing through the nut 6 and the outer spindle 7 The handle member 14 has a hollow hole 15 into which the upper end of the inner spindle 8 further exposed is inserted.

Thus, the handle member 14 has an upper member 18 and a middle hole 1.
5 and a lever guide 19 communicating with each other,
A lever 20 is provided on the upper surface of the lever kite 19 so as to be slidable by a certain amount, and a concave arc portion 20a at the tip of the lever 20 can be freely engaged with and disengaged from a circumferential groove 7b formed in the outer spindle 7. be.

In the figure, reference numeral 21 indicates a bolt for fastening the upper member 18 and lever guide 19, and reference numeral 22 indicates a pin to prevent the lever 20 from slipping out.

According to the handle member 14 having the above configuration, when the lever 20 is pushed into the handle member with both spindles fitted into its inner hole 15, the concave arc portion 20a at the tip is engaged with the circumferential hole 7b of the outer spindle 7. When the handle 16 is rotated in a certain direction after the handle 16 is aligned, the inner spindle 8 is raised or lowered in a non-rotating state via the rotating shaft (square nut) 17 that engages with the threaded portion 8a of the inner spindle. .

In this case, a peep hole 2 is placed on the side of the lever guide 19 in advance.
3, and a long hole 7C is vertically provided in the outer spindle 7 at a position facing the peephole 23, and a screw 8e erected on the inner spindle corresponding to this portion is movable within the long hole. This prevents the inner spindle 8 from co-rotating with the handle member 14, and at the same time allows the vertical state of the inner spindle 8 to be visually observed through the peephole 23. Coupled with the confirmation of the tip position of the spindle 8, this provides convenience such as being able to accurately grasp the state of expansion and contraction of the packer 7a.

As mentioned above, the difference between the handle member 14 and the handle member 10 previously shown in FIG. 1 is that the rotation mechanism shown in FIG. 1 has a simple structure and can be obtained at a relatively low cost; The outer diameter of spindle 7 is set to a certain length (i.e. 15 φ)
It was difficult to set the following, and it was difficult to apply it to the saddle branch faucet whose branch hole has a minimum diameter of 13 tmφ, which is currently in use. However, by using this mechanism as shown in Figure 4, it is possible to The outer diameter of the spindle 7 can be reduced to around 13 tmφ, and saddle faucets from the minimum diameter (13+nφ) to the maximum diameter can be replaced without water interruption.

Furthermore, the handle member 14 having the above structure has the advantage that the handle member and the outer spindle 7 can be freely engaged and disengaged by sliding the lever 20, so that the outer spindle can be easily and accurately operated up and down while the lever is engaged. Can be seen.

Further, as a specific example of the means for securing the lever 20 and the outer spindle 7, as shown in FIGS. 5(A) and 5(B),
Inner hole 20b with which the outer spindle can communicate with the central part of the lever
A concave arc portion 20a having an arc corresponding to approximately a semicircle of the circumferential groove 7a of the outer spindle is formed in one example of the inner hole, and a retaining screw hole 20c is connected to the opposite position. (See figure (A)) and figure CB), one end of the relatively short lever 20 is provided with a concave arc portion 20a that can hold the approximately semicircumference of the circumferential groove 7b of the outer spindle. On the other hand, various methods are conceivable, such as one in which an independent retaining screw hole 20d is provided in front of the lever, but the present invention does not particularly limit the lever and its sliding structure.

Furthermore, in the levers of each of the above configurations, in order to prevent the lever from separating from the circumferential groove of the outer spindle while the handle member 14 is in use, a wave spring or a sprung shock absorber is used as shown in FIG. 24 or a resistor 25 such as a resin washer may be used alone or in combination.

〔Effect of the invention〕

First, the unique effect of the water stop device according to the present invention is that it has a structure that compresses the puff car made of elastic material to cause elastic deformation and stops water inside the main pipe, so it is easy to attach and detach old and new water faucets. In addition to being able to do so without any problems without water interruption, the presence of a stopper that can expand and contract by sliding on the reverse taper at the lower end of the rising spindle prevents the puff car from tightening even if the rising spindle is overtightened or the main pipe internal pressure becomes excessive. It has the special feature of being safe by reliably preventing drainage from the water diversion hole.

In addition, in the present invention, by using the above-mentioned water stopper, it is possible to expand the old water diversion hole without water interruption, so there is no unnecessary water diversion hole that reduces the strength of the main pipe as in conventional construction methods. This eliminates the need to install additional pipes, and therefore has a significant effect on extending the life of the main pipe. Furthermore, by being able to use the old water diversion hole, the amount of excavation of the upper trench when connecting to the existing branch pipe, which is required during 4° water faucet replacement work and hole expansion work, can be minimized. Significant labor savings are possible. In addition, according to the present invention, when fitting a rust prevention sleeve or the like to a water diversion hole, the water flow center between the new water faucet and the water diversion hole can be accurately maintained, making the work extremely easy. The improvement effect is significant.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of the central part of a water faucet showing the water stop state using the water stop device of the present invention, and Fig. 2 is a section showing the relationship between the main pipe and the lower end of the water stop device before and after water stop. Cross-sectional view, Figure 3 (A)
(B) is a plan view showing the expansion and contraction state of the stopper of the water stopper;
Also, [C] is a perspective view of the stopper alone, FIG. 4 is a sectional view of the main part showing another embodiment of the handle member, and FIG. 5 (
A) CB) are partial perspective views showing specific examples of levers. In addition, in the figure 1...Electrical detection, 2... Ball-shaped valve body, 3...
・・Installation of the operating handle is in section 4, ・water faucet, 5...
・Attachment, 5a...Chuck ring, 6...
・Nand, 7... Hollow spindle, 7a... Packer 8... Rising spindle, ■ 7... Rotating shaft, 4... Handle member. that's all

Claims (1)

[Scope of Claims] 1. A step of using an existing uninterrupted saddle water distribution faucet to close the water supply main water distribution hole from the inside with a water stopper packer inserted into the upright hole; In this state, the process of removing the old water faucet from the main pipe, the process of fitting and fixing the new water faucet to the main pipe by inserting it into the spindle, and the process of deflating the packer and extracting the water stopper. Method 2 for replacing a non-stop water distribution type saddle water diversion hole, which consists of: After performing each of the steps set forth in claim 1, the old water diversion hole is replaced by a known method using the newly installed non-stop water type saddle water distribution faucet. Water diversion hole expansion method 3 with an additional hole expansion process: A hollow spindle that can be inserted freely into the upright hole of the existing uninterrupted saddle water distribution faucet, and a fixed amount of watertight movement up and down within the hollow hole of the spindle. an attachment that can be screwed onto the outer periphery of the upright hole of the water faucet via a chuck ring that watertightly supports the upper end of the hollow spindle; While the packer is fitted, a bottom flange with a diameter slightly smaller than the diversion hole diameter of the water supply main pipe and a reverse tapered body are integrally connected to the lower end of the rising spindle, and can be freely expanded and contracted along the circumferential surface of the reverse tapered body. A packer presser is disposed between the ring-shaped stopper that moves and the packer, and a rotating shaft to which a handle member can be attached and detached can be fitted to the upper end of the rising spindle. Water stop device for replacing water faucets. 4. The water stopper for replacing a water faucet according to claim 3, wherein the handle member is provided with a lever that can be engaged and detached from the circumferential groove of the hollow spindle.