JP3056583B2 - Continuous fluid insertion fluid control valve device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

A. Object of the Invention (1) Industrial application field The present invention relates to a construction in which a fluid control valve is installed in a fluid line in a state of uninterrupted water flow (flow in the fluid line is stopped without being stopped by a water control valve installed in advance). The present invention relates to a so-called uninterrupted water insertion fluid control valve device which is used when a fluid pipe is branched and a water pipe is branched or water is stopped.

(2) Conventional technology and its problems The present applicant has proposed various types of such fluid control valves for continuous insertion of water. Among these devices, Japanese Patent Application No. Hei 3-1742
No. 67 (hereinafter, referred to as prior art) differs from the other in that the branch connection portion is located on the same plane as the existing fluid pipe. That is, the control valve device of the prior application is water-tightly assembled across a cut portion at a branch position of an existing fluid pipe, has a receiving portion at an upper end thereof, and has a receiving portion at an intermediate position between the receiving portion and the same plane as the existing fluid pipe. A valve box body having a perforated pipe section orthogonally to the existing fluid pipe; and a watertight by fitting into a receiving portion of the perforated pipe section of the valve box body. A cover body disposed; a valve body and a valve stem, wherein the valve stem is mounted on the cover body, and the valve body is arranged so as to be able to advance and retreat inside the perforated cylinder portion of the valve box body, and when retracted, The opening of the branch connection pipe portion of the perforated cylinder portion is closed, and at the time of advance, the branch communication hole formed in the valve body communicates with the opening of the branch connection pipe portion and the flow path of the existing fluid pipe is shut off. And a flow switching valve.

[0003] The fluid control valve device is used and functions as follows. This device with the lid and the flow switching valve removed is assembled and fixed at the branch position of the existing fluid pipe, and a branch pipe is connected to the branch connection pipe part, and a working water control valve is provided at the upper end of the perforated cylinder part. The existing pipe is pierced and cut by a piercing machine through the water control valve. Then, after removing the drilling machine and the cut pieces, the lid incorporating the flow switching valve is inserted into the receiving portion of the drilling cylinder through the working water control valve, and the lid is fixed. After that, the work control valve is removed. The valve body of the flow switching valve is advanced into the valve box body, the water flow is cut off, and water flows through the branch pipe through the branch connection pipe section. However, according to the fluid control valve device of the prior art, the flowing water is turned in the vertical valve portion of the flow switching valve in the open state of the flow switching valve and immediately flows out to the branch connection portion. Low head loss and economical in long-term use. And if the lid equipped with the flow switching valve is assembled to this device, the water control valve for uninterrupted work can be removed at an early stage, and there is no work to pull out the flow switching valve,
Work effort is reduced, and work efficiency is improved. Furthermore, after installing the present apparatus, a bypass pipe may be arranged, the time can be selected, and the flexibility of work is improved.

[0004] However, in the prior art, the length of the perforated tube portion is increased, so that the height of the entire apparatus is high, not only the amount of excavated soil is increased, but also the flexibility of installation of the bypass pipe is reduced. Become. Furthermore, the flowing water is largely deflected by the flow switching valve, causing a slight head loss.

(3) Problems to be Solved by the Invention The present invention has been further developed while utilizing the advantages of the above-mentioned prior application. It is intended to further reduce loss and height.

B. Configuration of the Invention (1) Means for Solving the Problems The non-continuous water insertion fluid control valve device of the present invention employs the following configuration to achieve the above object. That is, it is watertightly assembled across the cut portion at the branch position of the existing fluid pipe, has an opening at its upper end, has a larger diameter than the existing fluid pipe, and is disposed orthogonal to the existing fluid pipe. A valve case with a branch pipe, comprising: a perforated tube portion; and a branch tube portion protruding from a side surface of the perforated tube portion at a position flush with or in the vicinity of the existing fluid pipe. A valve cover fitted in the opening of the perforated cylinder portion of the valve body and disposed in a watertight manner; comprising a valve stem and two valve bodies, wherein the valve stem is mounted on the valve cover; The two valve bodies are threaded in common with the valve stem, and are arranged to be able to advance and retreat alternately and independently of each other in the bored cylinder portion. A first valve element opens and closes the cut section, and the other second valve element opens and closes the branch pipe section, and a flow switching valve. And wherein the Rukoto. In the above configuration,
It communicates with the branch pipe through the branch communication port,
The two-valve valve is a valve large enough to close this branch communication port.
Having a body is an optional matter that is adopted as appropriate.
You. The present invention is also applicable to the fluid control valve device for inserting a continuous water.
The flow switching valve used is held vertically
Are substantially cylindrical and are substantially coplanar
1 housed in a valve box body with three valve ports to be opened
Consists of two stems and two discs, the stems being upper and lower
The parts are formed in opposite threads with each other and
Arranged on a central axis, the two valve elements being eccentric relative to the valve stem
The valve body facing the valve port and extending from the valve body to the valve stem.
And a threaded portion to be threaded, which is common to the valve stem and
However, they are screwed with a reverse screw relationship, and
Is independently movable in the opposite direction, and
The two are alternately opened and closed.

(2) Function The fluid control valve device of the present invention is used and functions as follows. This device with the valve lid and flow switching valve removed is assembled and fixed at the planned branch position of the existing fluid pipe, a bypass pipe is connected to the branch pipe, and a working water control valve is attached to the upper end of the perforated cylinder. The existing pipe is pierced and cut by a piercing machine through the water control valve. Then, after removing the drilling machine and the cut pieces, the valve cover equipped with the flow switching valve is inserted into the opening of the bored cylinder through the working water control valve, and the valve cover is fixed. At this time, the first valve body of the flow switching valve is located above the cutting portion, opens the cutting portion, and the second valve body closes the communication port with the branch pipe portion. After that, the work control valve is removed. The first valve body of the flow switching valve is advanced into the valve box body to shut off the water flow, and at the same time, the second valve body opens the communication port with the branch pipe part and passes through the bypass pipe through the branch pipe part. Water.

(3) Embodiment An embodiment of a fluid control valve device for insertion of continuous water (hereinafter referred to as "control valve device") according to the present invention will be described with reference to the drawings. FIG.
6 to 6 show an embodiment of the control valve device S. That is,
FIG. 1 is a longitudinal sectional view showing the entire structure of the present control valve device S in a valve closed state, FIG. 2 is a longitudinal sectional view of the present control valve device S in an open state, FIG. Is a horizontal sectional view thereof, FIG.
And FIG. 6 is a partial view thereof. In the figure, a thick arrow indicates the flow direction of the water flow.

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 a branch pipe installation portion of the water distribution pipe P. Q is a cut portion cut by a drill at the branch point of the water distribution pipe P.

Referring to FIG. 1 to FIG. 4, a control valve device S of the present embodiment includes a perforated tube portion 1A, an additional pipe portion 1B, and a branch connection portion 1.
C; a valve case 1 with a branch pipe assembled to the water distribution pipe P; a valve cover 2 mounted in the opening of the perforated tube portion 1A of the valve case 1; And a flow switching valve 3 which can be advanced and retracted into the valve body 1, and also includes an upper lid 5 and a locking bolt 6.

The detailed structure of each part will be described below. The valve case 1 with a branch pipe comprises a tube case 1A with a perforated tube, an auxiliary tube 1B, and a branch tube 1C. The tubed portion 1A has an opening at the top and a bottom at the bottom. The auxiliary pipe 1B and the branch pipe 1C are arranged orthogonally from the same level position of the perforated pipe 1A. More specifically, the perforated tube portion 1A is arranged perpendicular to the water distribution pipe P, and has an inner diameter sufficiently larger than the outer diameter of the water distribution pipe P. Then, the perforated cylinder 1
A is divided into an upper perforated tube portion 10a and a lower perforated tube portion 10b at a horizontal plane including the central axis O of the water distribution pipe P.

A flange 12 is extended outward from an upper end of the bored cylindrical portion 1A, and a so-called receiving portion for receiving the valve lid 2 is formed in an upper opening thereof. At the upper part of the bored tube portion 1A corresponding to the receiving portion, a screw tube 14 in which a bolt hole 13 is screwed is fixed at an appropriate interval in the circumferential direction, and the locking bolt 6 is screwed. Be mounted. Guide ridges 16 are provided vertically from the middle of the perforated tube portion 1A to the bottom at predetermined intervals so as to avoid the openings of the additional tube portion 1B and the branch tube portion 1C described later. The guide ridges 16 guide the movement of the two valve bodies of the flow switching valve 3. At the center of the inner bottom surface of the bored cylindrical portion 1A, a boss 17 is protruded, and at the center thereof, a guide hole 18 into which a tip of a valve rod of the flow switching valve 3 described later is fitted is bored.

The auxiliary pipe portion 1B is formed so as to be continuous with the perforated tube portion 1A, and comprises two upper and lower semi-tubular members 20 (an upper semi-tubular member 20a and a lower semi-tubular member 20b).
The end faces of these semi-tubular members 20 are brought into water-tight contact. Reference numeral 21 denotes a joint at the end of the auxiliary pipe 1B in the pipe axis direction.
It comprises a receiving portion 21a, an annular rubber ring 21b loaded in the receiving portion 21a, a pressing wheel 21c for pressing the rubber ring 21b, and a tightening bolt 21d. The rubber ring 21b is tightened to make the end of the attached pipe portion 1B watertight. A detachment prevention bolt 21e is screwed into the pressing wheel 21c with a space between the bolt 21d and the tightening bolt 21d, and the cutting edge of the bolt 21e is cut into the water pipe P to prevent detachment.

The branch pipe section 1C is formed at the same level position as the auxiliary pipe section 1B of the perforated tube section 1A, that is, at the same horizontal position as the water distribution pipe P, so as to protrude from the side surface of the perforated tube section 1A. The branch pipe section 1C is vertically divided by the plane including the central axis O of the water distribution pipe P as described above, similarly to the auxiliary pipe section 1B, and these semi-tubular members 23 (23
a, 23b). Reference numeral 24 denotes a joint portion at the end of the branch pipe portion 1C, which has a configuration similar to that of the auxiliary pipe portion 1B, and has a receiving portion 24a, an annular rubber ring 24b loaded in the receiving portion 24a, and the rubber. It comprises a pressing wheel 24c for pressing the wheel 24b and a tightening bolt 24d. And, of course, other connection modes (for example, flange connection) can be freely used in place of the socket 24. The perforated tube portion 1A and the branch pipe portion 1C communicate with each other through the branch communication port 26. In the present embodiment, the branch communication port 26 is formed in a vertically long shape with a certain width (a packing of a second valve body of the flow switching valve 3 described later abuts) between adjacent guide ridges 16. ing.

As described above, the valve body 1 is a two-piece body composed of the upper valve body 1a and the lower valve body 1b with the horizontal plane including the central axis O of the water distribution pipe P as a boundary. An outwardly extending flange 27 is formed at the joint end, and the flange 27
Are assembled integrally via bolts and nuts 28 inserted through bolt insertion holes formed in the holes.

The valve cover 2 has a substantially disk shape, and its thick edge is made longer so as to be fitted into the receiving portion of the valve box 1, and the outer edge is formed outside the edge. Packing 3 mounted in packing groove recessed on the side
0 is watertight. A locking hole 31 for receiving the tip portion 6a of the locking bolt 6 is formed on the outer side surface of the edge above the packing 30 so as to correspond to the bolt hole 13 of the receiving portion. The lower end surface of the edge of the valve lid 2 is in contact with the upper surface of the flow switching valve 3, and functions as a stopper for the flow switching valve 3.
The center of the upper surface of the valve lid 2 is formed in a boss 33, and a valve stem insertion hole 34 through which a valve stem of the flow switching valve 3 described later is inserted is formed in the center of the boss 33. An annular upper lid 5 contacts the upper surface of the valve lid 2. Bolt insertion holes are formed at the edges of the upper lid 5 in the circumferential direction corresponding to the bolt insertion holes of the flange portion 12 of the bored cylindrical portion 1A, and tightening bolts / nuts 36 are attached to both the bolt insertion holes. 5 is fixed.

Flow switching valve 3 Flow switching valve 3 has one valve stem 3A and two valve stems 3A which are screwed into the valve stem 3A and which advance and retreat in opposite directions with the rotation of the valve stem 3A.
And three valve bodies 3B (first valve body) and 3C (second valve body). That is, the valve stem 3A is an upper screw which is reversely screwed to each other.
And the first valve element 3B has a lower part 41 and a lower screw 41.
Screw into screw 41 and open / close the hole of cutting part Q
Then, the second valve body 3C is screwed into the upper screw 40, and its advance and retreat
Opens and closes the branch communication hole 26.

(The valve stem 3A) More specifically, the valve stem 3A
Are mainly arranged on the upper screw 40 and the lower screw 41 which are formed as reverse screws, and are arranged on the central axis of the bored cylindrical portion 1A.
The lower end 42 is fitted into the lower bottom guide hole 18 of the valve box 1A. The valve stem portion 44 at the upper part is the valve stem insertion hole 3 of the valve lid 2.
4 and a watertight seal via a packing 45, and a holding member 47 for detachably holding a retaining ring (made of a split body) 46 disposed above the packing 45. It is arranged freely on the boss.
Reference numeral 48 denotes a rotation operation section at the upper end of the valve stem 3A.

(First Valve Body 3B) The first valve body 3B has a valve stem 3
A valve body 50 facing the cutting portion Q at a position eccentric from A and a valve stem 3A extending below the valve body 50 toward the valve stem 3A.
A and a screw threaded portion 51 that is threadedly engaged with A. That is,
The valve main body 50 has a sufficient height to cover the cut portion Q, and has a substantially circular arc-shaped horizontal cross section so that the front surface is along the inner peripheral wall surface of the perforated tubular portion 1A. In order to face the cut portion Q, the portion is recessed with the concave portion 53 so as to receive the cut portion Q. Therefore, only the upper portion is formed in the eave portion 54. A packing 55 is mounted on the outside of the valve body 50 via a concave groove. FIG. 5 shows the packing 55 taken out. The upper front portion 55a and the side portion 55b are in sliding contact with the inner peripheral surface of the perforated tube portion 1A, and the lower portion 55c is in contact with the bottom surface of the perforated tube portion 1A. On both sides of the valve body 50, it slides in the guide protrusion 16 and is guided vertically.

The screw threaded portion 51 has an arm portion 57 extending from the lower rear portion of the valve body 50 toward the valve stem 3A.
A square nut member 58 is fitted in the groove at the end of the groove 7 while preventing co-rotation. The nut member 58 has a screw hole 5
9 is screwed, and the lower screw 41 of the valve stem 3A is
Are screwed together. In the first valve body 3B, the valve body 50
Is formed as the concave portion 53, but it is not necessary to form the concave surface as a special concave curved surface.

(Second Valve Element 3C) The second valve element 3C is
A valve body 60 facing the branch hole at a position eccentric from A, and extending toward the valve stem 3A above the valve body 60,
A and a screw threaded portion 61 that is screwed into A. The second valve body 3C has a configuration substantially similar to the first valve body 3B. That is, the valve body 60 has a height sufficient to cover the branch communication port 26, and has an outer surface formed along the inner peripheral wall surface of the perforated tubular portion 1A. Make an arc shape. Unlike the first valve body 3B, no concave portion is formed, and the front surface 63 faces the branch communication port 26 as it is. This valve body 6
The packing 64 is mounted outside the groove 0 through a groove. FIG. 6 shows the packing 64 taken out. The upper front part 64a, the side part 64b, and the lower front part 6 are shown.
Reference numeral 4c slidably contacts the inner wall surface of the perforated tube portion 1A. Valve body 6
On both side surfaces of the ridge 0, the slidable contact is made within the guide ridges 16 to guide the vertical movement. The screwed portion 61 has an arm 65 extending toward the valve stem 3 </ b> A from an upper portion on the back surface of the valve body 60, and a horn-shaped nut member 66 co-rotates in a concave groove at an end of the arm 65. And is fitted. A screw hole 67 is screwed into the nut member 66, and the upper screw 40 of the valve stem 3A is screwed into the screw hole 67.

The feature of this valve body 3 is that the first valve body 3B and the second valve body 3C are screwed into a common valve rod 3A,
With the rotation of the valve stem 3A, the respective valve bodies 3B and 3C move in directions opposite to each other. That is, when the first valve element 3B is at the upper position and the cutting portion Q is opened, the second valve element 3C is at the lower position and closes the branch communication port 26.
When the valve body 3B is in the lower position and closes the cutting portion Q, the second
The valve element 3C moves to the upper position and opens the branch communication port 26.

As described above, the valve cover 2 is permanently fixed to the upper cover 5 by tightening the bolts and nuts 36 thereof. The locking bolt 6 locks the distal end 6 a in the locking hole 31 of the valve lid 2 by rotating and tightening, thereby preventing the valve lid 2 from floating. 70 is a cap.

Next, the control valve device S of this embodiment is connected to the water pipe P
The procedure of the work to be installed in the water-free state will be described, and the operation of each member of the control valve device S will be described (see FIGS. 7 to 11). Here, the water pipe branching work will be described as an example. That is, as shown in FIG. 7 and FIG.
And the old distribution pipe P is removed over the section L.

The following is a description based on the construction procedure. (1) The valve box 1 of the device S, from which the valve lid 2 and the flow switching valve 3 are removed, is joined to the expected position of the water pipe P by joining the upper and lower halves 1a and 1b to each other. And water-tightly attached around the water distribution pipe P. At this time, the locking bolt 6 is retracted. A blind lid is temporarily fixed to the joint 24 of the branch pipe 1C of the valve body 1 instead of the pressing ring 24C.

(2) Thereafter, as shown in FIG. 9, the water control valve H for water-stopping work and the drilling machine I are watertightly mounted on the upper part of the drilling cylinder 1A of the control valve device S via the flange 12. . Next, the working water control valve H is opened, the cutter J of the drilling machine I is inserted into the drilling cylinder 1A, and the water distribution pipe P is cut.
In FIG. 9, reference numeral 100 denotes a driving unit of the drilling machine I, 102 denotes its rotary drive shaft, and 104 denotes its watertight cylinder.

(3) The cutter J holding the cut piece of the water pipe P is raised to a position above the working water control valve H, and the water control valve H
The drill I is removed in the state where is closed.

(4) As shown in FIG. 10, the flow switching valve 3 is attached to the valve cover 2 and the valve bodies 3B and 3C are closed in a predetermined closed state (the first valve body 3B is in the upper position and the second valve (The body 3C is in the lower position), and a valve charging device K in which the flow switching valve 3 is detachable via the valve cover 2 is mounted on the working water control valve H in a watertight manner. Is opened, and the valve cover 2 is inserted into the opening of the box 1. At this time, the valve element 3 of the flow switching valve 3
B and 3C are inserted along the guide ridge 16 in the perforated tube portion 1A, and the tip 42 of the valve rod 3A is inserted into the guide hole 18 at the bottom of the perforated tube portion 1A. The body 3C closes the opening 26 of the branch pipe 1C. In this state, the water flow flows in a normal state.

After that, the locking bolt 6 is rotated forward,
The tip 6a is inserted into the locking hole 31 of the valve lid 2,
Temporarily fix the valve lid 2. In FIG. 10, reference numeral 110 denotes an advancing / retracting shaft of the valve charging device K, 112 denotes a joint attached to the lower end of the advancing / retracting shaft 110 and connects to the flow switching valve 3, 114.
Is an outer cylinder for watertightness of the present apparatus K, and 116 is a working window of the outer cylinder 114.

(5) Disengage the flow switching valve 3 from the valve insertion device K, and then remove the valve insertion device K and the working water control valve H. Thereafter, the upper lid 5 is brought into contact with the valve lid 2 and is permanently fixed with the tightening bolts / nuts 36. FIG. 1 shows this state. In this state, the separately provided bypass pipe B is connected to the branch pipe section 1C of the device S. That is, the blind cover of the joint portion 24 of the branch pipe portion 1C is removed, the tip of the bypass pipe B is inserted into the joint portion 24, and watertightness is maintained by tightening the pressing ring 24C.

(6) The rotating portion 48 of the valve rod 3A protruding above the valve cover 2 is rotated so that the first valve body 3B of the flow switching valve 3 is connected to the valve body 1.
To enter. On the contrary, the second valve body 3C is pulled up. These valve bodies 3B and 3C are provided with guide ridges 16.
It is moved up and down along. When the bottom of the first valve body 3B has landed on the bottom of the perforated cylinder 1A, the flow in the water distribution pipe P is shut off from the water stoppage side (downstream in the upstream, upstream in the downstream), while the second The valve element 3C opens the branch communication port 26,
Since the flow is communicated with the branch pipe 1C, the above-mentioned flow flows into the bypass pipe B via the branch pipe 1C. FIG. 11 and FIGS. 2 to 4 show this state. In addition to the manual operation of rotating the valve stem 3A via the operating rod, the driving of the electric motor facilitates the rotating operation and enables remote operation, which is convenient.

(7) The existing distribution pipe P included in the branch section is cut and removed over a predetermined section L. Thereafter, the remaining water pipe P is pulled out from the auxiliary pipe section 1B, a water stop lid (reference numeral 72 in FIG. 8) is provided in place of the pressing ring 21c, and the existing water pipe P is completely stopped. In addition, a water stop lid can be provided on the remaining pipe end of the water distribution pipe P without pulling out the end of the water distribution pipe P in this manner. Thus, the branching work is completed.

Since the control valve device S of this embodiment is used in the manner described above, after the valve lid 2 is attached, the two valve bodies 3B and 3C of the flow switching valve 3 are alternately advanced and retracted. Water can be freely passed and cut off, and the flexibility of unstopped construction is high.
For this reason, the degree of freedom in piping work of the bypass pipe B is increased, and a reasonable construction design can be performed. In particular, the branch pipe section 1C is arranged at the same horizontal position as the water distribution pipe P, and the up and down stroke of the valve bodies 3B and 3C is short,
For this reason, the height of the valve body 1 is shortened, and the amount of excavated soil can be reduced. In the above embodiment, the branch pipe laying work is taken as an example, but application to the laying replacement work of the predetermined section L can be easily carried out in accordance with the above-mentioned work procedure.

The present invention is not limited to the above embodiment, and various design changes can be made within the scope of the basic technical concept of the present invention. That is, the following embodiments are included in the technical scope of the present invention. The branch pipe section 1C of the valve case 1 may be arranged obliquely to the pipe axis of the fluid pipe P. Further, in the present embodiment, the perforated tubular portion 1A and the branch pipe portion 1C communicate with each other through the narrowed branch communication port 26 which is narrowed down. Can communicate. Therefore, in this case, the branch pipe 1
C may be distributed slightly from the central axis O of the existing water distribution pipe P. The additional pipe portion 1B of the valve body 1 is not indispensable, and may be any as long as it can be watertight and fixed at the opening facing the water distribution pipe P of the perforated tube portion 1A. That is, the weld joint satisfies this aspect.

C. Advantageous Effects of the Invention According to the present invention, there is provided a fluid control valve device and a flow switching valve.
If the flow switching valve opens and closes in a short stroke,
And the running water moves up and down when turning.
Immediately flows out into the branch without any further action. Therefore, this device
The overall height can be kept low and the installation location is flexible
Is high, and the head loss of running water is small,
It is economical at the same time. And I installed this device
After that, you can arrange a bypass pipe, you can choose the time
Work flexibility is improved. Also, the flow switching of the present invention
For the valve itself, the valve body is eccentric from the valve stem.
Allows a large amount of fluid to pass through the valve box without obstructing
Can be

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an entire valve closed state of an embodiment of a fluid control valve apparatus for inserting fluid without interruption according to the present invention.

FIG. 2 is a longitudinal sectional view similar to FIG. 1 in the valve-opened state.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is an overall perspective view of a packing mounted on a first valve body of the flow switching valve.

FIG. 6 is an overall perspective view of a packing mounted on a second valve body of the flow switching valve.

FIG. 7 is a plan view showing an initial state of a work process of a water pipe branching work.

FIG. 8 is a plan view showing an end state of a work process of a water pipe branching work.

FIG. 9 is a sectional view showing an initial step of a work process of a water pipe branching work.

FIG. 10 is a cross-sectional view showing an intermediate step of the work process of the water pipe branching work.

FIG. 11 is a sectional view showing an end step of a work process of a water pipe branching work.

[Explanation of symbols]

P: fluid pipe, Q: cut section, 1: valve body, 1A: perforated cylinder section, 1C: branch pipe section, 2: valve lid, 3 ... flow switching valve, 3A
... valve stem, 3B ... first valve body, 3C ... second valve body, 26 ... branch communication port

Claims (3)

(57) [Claims] 1. An existing fluid pipe, which is watertightly assembled across a cut portion at a branch position, has an opening at an upper end thereof, has a diameter larger than that of the existing fluid pipe, and is orthogonal to the existing fluid pipe. A valve body with a branch pipe, comprising: a perforated cylinder portion arranged in a predetermined direction; and a branch tube portion protruding from a side surface of the perforated tube portion at a position flush with the existing fluid pipe or at a position near the same. A valve cover fitted in the opening of the perforated tube portion of the valve box body with the branch pipe and arranged in a watertight manner; one valve stem and two valve bodies, wherein the valve stem is attached to the valve cover; The two valve bodies are threaded in common on the valve rod, and alternately advance and retreat independently of each other in the bored tube portion. A flow switching valve that opens and closes a cut portion and one second valve body opens and closes a branch pipe portion; A fluid control valve device for continuous insertion of water, comprising: 2. The branch valve according to claim 1, wherein the perforated cylinder and the branch pipe communicate with each other through a branch communication port, and the second valve body has a valve body large enough to close the branch communication port. The fluid control valve device for continuous insertion of water according to claim 1. 3. A cylinder which is held vertically and is substantially cylindrical.
Three that are in the shape of and that are set up on substantially the same plane
One valve stem and two housed in a valve box body having a valve opening
And the valve stem is formed with opposite threads at the upper part and the lower part.
Both are arranged on the central axis of the valve body, and the two valve bodies are eccentric to the valve stem and face the valve port.
A threaded portion extending from the body and the valve body and screwed into the valve stem;
And common to the above-mentioned valve stems and have a reverse screw relationship with each other.
The valve body is independently screwed in opposite directions.
It is freely movable and opens and closes two of the valve ports alternately.
That, without suspension of water supply inserted fluid control valve device diverter, characterized in that
valve.