JPH07117193B2 - Uninterrupted water insertion fluid control valve device - Google Patents

Description

Detailed Description of the Invention a. OBJECT OF THE INVENTION [Industrial field of application] The present invention allows a fluid control valve to be installed in a fluid pipe in an uninterrupted water flow state (without stopping the flow in the fluid pipe with a pre-installed water control valve). The present invention relates to a so-called water-impervious insertion fluid control valve device which is used for inserting a water pipe, thereby branching a fluid conduit or stopping water.

[Conventional technology]

The present applicant has previously proposed this type of uninterrupted water insertion fluid control valve device in Japanese Patent Application No. 2-165777 (hereinafter referred to as prior application technology).

That is, the device of the prior application is "watertightly assembled across the cut portion of the branch position of the existing fluid pipe, has a flange and a receiving portion at its upper end, and is arranged so as to intersect with the external existing fluid pipe. A valve box body provided with a perforated cylinder part; a base case fitted to a receiving part of the perforated cylinder part of the valve box body, and an inner case having a window part on an outer periphery at an upper part; A branch connection arranged on the flange at the upper end of the perforated cylinder portion of the box body and arranged so as to partition the water passage portion so as to face the window portion on the outer periphery of the inner case and communicate with the water passage portion. An outer case having a tube portion;
A flow switch that is housed in the inner case and is arranged so as to be able to move back and forth in the perforated cylinder portion of the valve box body, closes the window portion of the inner case when retreating, and blocks the flow path of the existing fluid pipe when advancing. It consists of a valve and a valve. ”

Then, this fluid control valve device is used as follows in the replacement work.

That is, the inner case, the outer case, and the flow switching valve are removed, and this device is assembled and fixed at the planned branching position of the existing fluid pipe, the work water control valve is attached to the upper end of the perforated cylinder, and the work water control valve A piercing machine is used to pierce and cut the existing pipe. Then, after removing the punch and the cut piece, the inner case incorporating the flow switching valve is inserted into the receiving portion of the perforated cylinder through the work water control valve, and the inner case is fixed. After that, the water control valve for work is removed.

Next, the outer case is externally fitted to the inner case and is watertightly fixed to the valve box body, and the branch pipe is connected to the branch connection pipe portion.

The valve body of the flow switching valve is advanced into the valve box body to block the water flow, and the water is passed through the branch pipe through the window of the inner case, the outer case and the branch connecting pipe portion.

According to the uninterrupted water insertion fluid control valve device, however, if the inner case equipped with the flow switching valve is assembled to the device, the uninterruptible water control valve can be removed early and the flow switching valve can be pulled out. Since there is no work, the work effort is reduced and the work efficiency is improved. Further, after installing this device, a bypass pipe may be arranged, the time can be selected, and the flexibility of the work can be improved.

However, the prior art has a drawback that the structure is complicated and the manufacturing cost is increased because the inner case and the outer case are used in combination.

[Problems to be solved by the invention]

The present invention is further developed while taking advantage of the above-mentioned prior application technology, and in this type of uninterrupted water insertion fluid control valve device, the structure can be simplified and the height can be reduced. The purpose is to provide things.

B. Structure of the Invention [Means for Solving the Problems] The uninterrupted water insertion fluid control valve device of the present invention has the following structure in order to achieve the above object. That is, the existing fluid pipe P is assembled in a watertight manner over the cut portion at the branching position, has the receptacle 2 at the upper end thereof, and has the branch connection pipe 3 in the middle thereof, and intersects with the existing fluid pipe. Perforated barrel part 1A
A valve box body 1 provided with: a lid body 4 which is fitted in a receiving portion of a perforated cylinder portion 1A of the valve box body 1 and arranged in a watertight manner; a valve body 5A and a valve rod 5B
The valve rod 5B is mounted on the lid body 4, and the valve body 5A is arranged in the bored cylinder portion 1A of the valve box body 1 so as to be able to advance and retreat. Branch connection pipe section 3
Of the existing fluid pipe P is opened and the flow passage of the existing fluid pipe P is opened, and when advancing, the opening of the branch connection pipe portion 3 of the perforated cylinder portion 1A is opened and the flow passage of the existing fluid pipe P is blocked. A flow switching valve 5 that connects the active water flow side of the flow path of the fluid pipe and the opening of the branch connection pipe portion 3 of the perforated cylinder portion 1A.

Here, the active water flow side is a side that does not stop the flow of the running water, and is symmetrical with the water stop side, that is, the water stop side.

[Action]

The fluid control valve device of the present invention is used and operates as follows.

This device, from which the lid 4 and the flow switching valve 5 have been removed, is assembled and fixed at the planned branching position of the existing fluid pipe P, and
A branch pipe is connected to the branch connecting pipe portion 3, a work water control valve is attached to the upper end of the perforation cylinder portion 1A, and the existing pipe P is perforated and cut by a perforator through the water control valve. Then, after removing the perforator and the cutting piece, the lid body 4 incorporating the flow switching valve 5 is inserted into the receiving portion 2 of the perforation cylinder portion 1A through the water control valve for work, and the lid body 4 is inserted. To fix. After that, the water control valve for work is removed.

The valve body of the flow switching valve 5 is advanced into the valve body 1, the water flow is shut off, and water is passed through the branch connecting pipe portion 3 to the branch pipe.

〔Example〕

An embodiment of an uninterrupted water insertion fluid control valve device (hereinafter referred to as "control valve device") of the present invention will be described with reference to the drawings.

1 to 7 show an embodiment of the control valve device S. That is, FIG. 1 is a longitudinal sectional view showing the overall structure of the present device S in the valve closed state, FIG. 2 is a lateral sectional view thereof, and FIGS. 3 and 4 are partial views thereof. FIG. 5 is a longitudinal sectional view of the present device S in the valve open state, FIG. 6 is a lateral sectional view thereof, and FIG. 7 is a horizontal sectional view thereof.

Hereinafter, a water pipe will be described as an example.

In the figure, P is an existing water distribution pipe buried in the ground, and the control valve device S of the present embodiment is attached to the branch pipe arrangement portion of the water distribution pipe P. Q is a cutting part cut at a branch point of the water distribution pipe P by a punching machine.

With reference to FIGS. 1 to 4, the control valve device S of the present embodiment.
Is attached to the water distribution pipe P, and has a perforated cylinder portion 1A and an attached pipe portion 1B.
And a valve body 1 having a receiving portion 2 and a branch connecting pipe portion 3 in the perforated cylinder portion 1A; and a lid body 4 fitted into the receiving portion 2 of the valve body 1. A flow switching valve 5 that is mounted on the lid body 4 and is movable back and forth into the valve box body 1; and a lid holding plate 6, a locking bolt 7,
The valve body guide shaft 8 is included.

The detailed structure of each part will be described below.

The valve box body 1 is composed of a perforated cylinder portion 1A and an attached pipe portion 1B, and the perforated cylinder portion 1A is a right-sided cylindrical body having an open top and a bottom.
A socket 2 is formed on the upper end of the socket 2 and the socket 2
The branch connection pipe portion 3 is formed so as to project in a continuous manner.

More specifically, the perforated cylinder portion 1A is divided into an upper perforated cylinder portion 10 and a lower perforated cylinder portion 11 with a horizontal plane including the central axis O of the water distribution pipe P as a boundary. The upper drilling cylinder part 10 and the lower drilling cylinder part 11 are assembled together by abutting the flanges 12 on their end faces and holding the mounting bolts 13. The mounting bolts 13 may be replaced by welding. The bored cylindrical portion 1A has an inner diameter sufficiently larger than the outer diameter of the water distribution pipe P and is arranged orthogonal to the water distribution pipe P.

The socket 2 is provided with a lid 4 at the opening at the upper end of the perforated cylinder 1A.
A concave portion 2a for receiving the concave portion is provided, and a flange 14 is stretched outward at an upper edge portion thereof.

In the receiving portion 2, keeping an appropriate interval in the circumferential direction,
A bolt hole 15 is screwed, and a locking bolt 7 is inserted in the bolt hole 15.
Is screwed. Further, also in the flange 14, bolt insertion holes 16 are provided at appropriate intervals in the circumferential direction.

The branch connection pipe portion 3 is formed below the receiving portion 2 so as to project from the side surface of the perforated cylinder portion 1A. The branch connection 3
A flange 18 is stretched on the end surface of the. Instead of the flange 18, another connection mode (for example, a socket part) can be adopted.

20 is a bottom plate of the perforated cylinder portion 1A.

The other attached pipe portion 1B constituting the valve box body 1 is formed so as to be continuous with the perforated cylinder portion 1A, and has two upper and lower semi-tubular members 22.
(Upper semi-tubular member 22a, lower semi-tubular member 22b),
By making the end surfaces of these semi-tubular members 22 collide with each other in a watertight manner, the water distribution pipe P is held and the device S is fixed to the water distribution pipe P. Reference numeral 24 denotes a joint portion at the end of the attached pipe portion 1b in the pipe axial direction, which includes a receiving portion 24a, an annular rubber ring 24b loaded in the receiving portion 24a, a push ring 24c for pressing the rubber ring 24b, and a tightening. It consists of a bolt 24d, and the rubber ring 24b is tightened through the push ring 24c by turning the tightening bolt 24d.
Watertight at the end of 1B.

The lid body 4 is a short straight cylinder whose upper surface is closed and whose lower surface is open. The lid body 4 is fitted in the recess 2a of the receiving portion 2 of the valve box body 1 and is recessed on the outer surface of the cylinder body. The watertightness is maintained by the packing 26 fitted in the packing groove formed. The outer surface of the cylindrical body is also formed with a locking hole 27 corresponding to the bolt hole 15 of the receiving portion 2 for receiving the tip portion 7a of the locking bolt 7. The inner diameter of the cylinder body of the lid body 4 is the perforated cylinder portion 1A of the valve box body 1.
It is slightly smaller than the inner diameter of and forms a step 28. The upper surface of the lid 4 is formed as a lid 29, and a valve rod insertion hole 30 is opened at the center of the lid 29.

The outer side of the upper edge of the lid body 4 is cut out to receive the annular lid holding plate 6. Bolt insertion holes 31 are opened in the cover pressing plate 6 in the circumferential direction corresponding to the bolt insertion holes 16 of the receiving portion 2, and tightening bolts and nuts 32 are attached to both the bolt insertion holes 16 and 31.

Further, a screw hole 33 is screwed into the back of the lid 29 of the lid 4,
The threaded portion 8a of the valve body guide shaft 8 is screwed and fixed.

The flow switching valve 5 includes a valve body 5A and a valve rod 5B.

The valve body 5A includes a vertical valve portion 35 and a horizontal valve portion 36 integrally formed on the vertical valve portion 35.

More specifically, the vertical valve part 35 has a substantially semi-cylindrical box shape with one side open, and the inner concave surface 37 is directed toward the live water side of the water flow (upstream upstream, upstream downstream). The widths of the front and rear sides of the perforated cylinder portion 1A are set so that they can be inserted into the cut portion Q with a margin, and both sides thereof orthogonal to the flowing water are brought close to the inner diameter of the perforated tubular portion 1A as much as possible.

Then, one side corresponding to the branch connecting pipe 3 wraps around the outside of the cut portion Q in the water distribution pipe P and is formed into a wing portion 38 having a width sufficient to close the branch connecting pipe portion 3 sufficiently.

The horizontal valve portion 36 has a substantially disc shape, is integrally formed on the upper portion of the vertical valve portion 35, and has a screw hole 39 screwed in the center thereof, and the screw hole 39 is sandwiched between the horizontal valve portion 36 and the horizontal valve portion 36. A large opening, that is, a water passage 40 is opened. The horizontal valve portion 36 is also provided with an insertion hole 41 for the valve body guide shaft 8 on the outer side of the front portion thereof (see FIG. 5).

A packing 42 is provided on the outer periphery of the valve body 5A of the flow switching valve 5.
Is installed.

FIG. 4 shows the overall structure of the packing 42. The packing
An annular portion 42a on the upper side of 42 is arranged on the horizontal valve portion 36, and the other portions are arranged on the side portion and the bottom portion of the vertical valve portion 35. Then, in particular, the frame-shaped portion 42b is arranged on the wing portion 38 of the vertical valve portion 35.

This valve body 5A is characterized by the concave surface 37 of the vertical valve portion 35.
The water flow that has collided with is discharged upward through the water passage 40.

In the valve rod 5B, the screw portion 43 at the lower portion is screwed into the screw hole 39 of the valve body 5A, and the valve shaft portion 44 at the upper portion is inserted into the valve rod insertion hole 30 of the lid body 4 through the packing 46. . A collar 47 is provided so as to project above the packing 46, and a retaining member 48 for removably pressing the collar 47 is arranged on the lid portion 29 of the lid body 4 so as to be attachable. 49
Is a rotating operation part at the upper end of the valve rod 5B.

The flow switching valve 5 is rotated by the valve rod 5B so that the packing 42
The valve body 5A moves up and down along the inner wall surface of the perforated cylinder portion 1A. At this time, the valve body 5A is vertically guided by the valve guide shaft 8 without causing rotational movement.

5 to 7 show a state in which the flow switching valve 5 is lowered downward.

As shown in the figure, the valve body 5A of the flow switching valve 5 has its vertical valve portion 35 and horizontal valve portion 36 watertightly shut off the water stop side (downstream in upstream, upstream in downstream) of the water flow. ,Also,
The opening of the branch connection pipe portion 3 of the perforated cylinder portion 1A is open. Therefore, the running water from the water distribution pipe P passes through the water passage 40 of the valve body 5A, is guided upward, and flows out from the branch connection pipe 3.

Next, the procedure of the work of mounting the control valve device S of the present embodiment to the water distribution pipe P in the uninterrupted water state will be described, and the operation of each member of the control valve device S will also be described (FIGS. 8 to 11).
See figure).

Here, the water pipe replacement work will be described as an example.
That is, as shown in FIG. 8, the bypass pipe B is branched from the upstream and downstream in the immediate vicinity of the replacement construction section L of the water distribution pipe P,
The bypass pipe B is replaced by a new pipe during the passage of water.

Hereinafter, it demonstrates based on a construction procedure.

(1) The valve box body 1 of the present device S from which the lid body 4 and the flow switching valve 5 are removed is abutted and joined to the planned branching position of the water distribution pipe P by butt-joining the upper and lower halves. Watertightly installed around the water pipe P. At this time, the locking bolt 7 is retracted. Further, a blind lid is temporarily fixed to the flange 18 of the branch connecting pipe portion 3 of the valve box body 1.

(2) As shown in FIG. 9, the perforated cylinder portion of the control valve device S
A water control valve H for uninterrupted water work and a perforator I are attached to the upper part of 1A through a flange 14 in a watertight manner. Thereafter, the work water control valve H is opened, the cutter J of the perforator I is inserted into the perforated cylinder portion 1A, and the water distribution pipe P is cut. In FIG. 9, 100 is a drive unit of the punching machine I, 102 is its rotary drive shaft, and 104 is its watertight cylinder.

(3) The cutter J holding the cut piece of the water distribution pipe P is pulled up to a position above the working water control valve H, and the perforator I is removed with the water control valve H closed.

(4) As shown in FIG. 10, a valve charging device K, in which the flow switching valve 5 in the retracted state is attached to the lid body 4 and the lid body 4 is detachable, is watertight on the working water control valve H. Then, the water control valve H is opened and the lid body 4 is inserted into the receiving portion 2 of the valve box body 1.
At this time, the wing portion 38 of the valve body 5A closes the opening of the branch connection pipe portion 3 as the valve body 5A of the flow switching valve 5 is inserted into the perforated cylinder portion 1A.

After that, the locking bolt 7 is rotated forward, and its tip 7a
Is inserted into the locking hole 27 of the lid 4, and the lid 4 is temporarily fixed. In FIG. 10, 110 is an advancing / retreating shaft of the valve charging device K, 112
Is a joint that is attached to the lower end of the advancing / retreating shaft 110 and forms a connection with the lid 4, 114 is an outer cylinder for making the apparatus K watertight, and 116 is a working window of the outer cylinder 114.

(5) Release the engagement between the lid 4 and the valve insertion device K, and then
The valve insertion device K and the working water control valve H are removed.

After that, the lid holding plate 6 is fitted to the lid body 4, and the tightening bolt,
Secure with nuts 32. FIG. 11 shows this state. In this state, the separately installed bypass pipe B is connected to the device S
It is connected to the branch connection pipe part 3.

(6) The rotating portion 49 of the valve rod 5B protruding above the cover portion 29 of the cover body 4 is rotated to cause the valve body 5A of the flow switching valve 5 to enter the valve box body 1. When the bottom part of the valve body 5A reaches the bottom part 20 of the perforated cylinder part 1A, the flow in the water distribution pipe P is blocked from the water stop side (downstream side in upstream, upstream side in downstream), while the perforated cylinder part Since the opening of the branch connection pipe portion 3 of 1A is opened, the above flow passes through the water passage 40 of the valve body 5A and flows into the bypass pipe B via the branch connection pipe portion 3.

It should be noted that, by rotating the valve rod 5B manually by using the operating rod and by driving the electric motor, the rotating operation is easy and remote operation is possible, which is convenient.

Since the control valve device S of the present embodiment is used in the above-described manner, water flow and water cutoff can be freely performed by advancing / retreating the flow switching valve 5 after the lid body 4 is attached, so that no water cutoff work is required. High flexibility. Therefore, the degree of freedom in the piping work of the bypass pipe B is increased, and a rational construction design can be performed. Further, when the water distribution pipe P is buried in the ground, the branch connection part 3 of this device is located at the upper position, so the amount of excavated soil in the bypass pipe B is reduced, and the construction cost can be reduced. .

In the above embodiment, the replacement work is taken as an example, but the work of arranging the branch pipe from the water distribution pipe P, so-called branch pipe installation work, or water stopcock work (in this case, the branch connection pipe of the valve box body 1) The blind lid is fitted on the end of the part 3), and the embodiment can be easily implemented according to the procedure of the above construction.

The present invention is not limited to the above embodiments, and various design changes can be made within the scope of the basic technical idea of the present invention. That is, the following aspects are included in the technical scope of the present invention.

The perforated cylinder portion 10 of the valve box body 1 may be arranged obliquely with respect to the pipe axis of the fluid pipe P, and the eccentric form is not excluded.

C. Advantageous Effects of Invention According to the uninterrupted water insertion fluid control valve device of the present invention, the structure is simplified as compared with the conventional device, the height of the valve box body can be reduced, the miniaturization is achieved, and the manufacturing The cost can be reduced. Then, if the lid body equipped with the flow switching valve is assembled to this device, the water control valve for uninterrupted water work can be removed at an early stage, and there is no work of pulling out the flow switching valve, thus reducing the work time and the work efficiency. improves. Furthermore, after installing this device, a bypass pipe may be arranged, the time can be selected, and the flexibility of the work is improved.

[Brief description of drawings]

The drawings show an embodiment of an uninterrupted water insertion fluid control valve device of the present invention, and FIG. 1 is a vertical cross-sectional view showing the whole valve closed state of the one embodiment device (cross-sectional view taken along the line I-I of FIG. 2). 2 is a sectional view taken along the line II-II of FIG. 1, FIG. 3 is a sectional view taken along the line III-III of FIG. 2, FIG. 4 is a perspective view of the entire packing, and FIG. Vertical cross-sectional view (cross-sectional view taken along the line VV in FIG. 6) of the state,
The figure is a cross-sectional view taken along line VI-VI in FIG. 5, and FIG. 7 is VII-V in FIG.
A sectional view taken along the line II and FIGS. 8 to 11 are views showing the work process of the water pipe replacement work. P ... Fluid pipe, Q ... Cutting part, 1 ... Valve box body, 1A ... Perforated cylinder part, 2 ... Receptacle part, 3 ... Branch connection pipe part, 4 ... Lid part, 5 ... Flow switching valve, 5A ... Valve element, 5B ... Valve rod

Claims (1)

[Claims] 1. An existing fluid pipe is installed in a watertight manner across a cut portion at a branching position, has a receiving portion at its upper end, and has a branch connecting pipe portion in the middle thereof, and intersects with the existing fluid pipe. A valve box body provided with a perforated cylinder portion arranged in a water-tight manner; a lid body fitted in a receiving portion of the perforated cylinder portion of the valve box body and arranged in a watertight manner; The valve rod is attached to the lid body, and the valve body is arranged so as to be movable back and forth in the perforated cylinder portion of the valve box body,
At the time of retreating, the opening of the branch connecting pipe part of the perforating cylinder is closed and the flow path of the existing fluid pipe is opened, and at the time of advancing, the opening of the branch connecting pipe part of the perforating cylinder is opened and the existing fluid is opened. A flow switching valve that blocks the flow passage of the pipe and connects the active water flow side of the flow passage of the fluid pipe and the opening of the branch connection pipe portion of the perforated cylinder portion; Control valve device.