JPH0645743Y2 - Water stop device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a water stop device installed in the middle of a service water supply pipe.

[Prior Art] A water stopcock is installed in the middle of a service pipe that draws water supply into a general household or a consumer building. If there is a failure of the valve body installed inside this water stopcock or connection failure of the connecting pipe connected to the inlet or outlet side of the waterstop, replace or repair parts. The need arises.

In such a case, conventionally, after cutting the lead-in pipe on the upstream side of the water stopcock, the water stopper is tightly fitted to the cut end to seal the water pressure, and after the repair and replacement, the water stopper is closed. The method of disconnecting and connecting again was taken.

However, this method requires that the tap water has a high water pressure between the time when the water pipe is cut and the time when the water stop is firmly fitted, or the time when the water stop is removed and the water stopcock is connected again. Gush out. For this reason, there is a problem that not only the water flows out wastefully but also the work becomes extremely difficult.

Therefore, the applicant previously proposed a water stop device as shown in FIG. 11 (Japanese Utility Model Application No. 63-91367). This device connects a connecting pipe 2 to a lead-in pipe 1 on the upstream side, and
Is connected to the inlet passage 4 of the temporary fastening device 3, and the outlet passage 5 is integrally provided on the outlet side of the temporary fastening device 3. The inlet end of the water stopcock 6 is integrally formed in the middle of the outlet passage 5, the connection pipe 8 is connected to the outlet passage 7 of the water stopcock 6, and the downstream side intake pipe 9 is further connected to the connection pipe 8. . A valve seat 14 is provided in a communicating portion between the outlet passage 5 and the water stopcock 6, and a valve body 15 is placed on the valve seat 14. The operating shaft 17 faces the valve rod 16 of the valve body 15.

An opening 10 is provided at the end of the outlet passage 5 of the temporary fastening device 3, and a closing plug 11 is fitted into the opening 10. The inlet passage 4 and the outlet passage 5 have the same center line.

The cock 12 of the temporary fixing device 3 is provided with a through hole 13 having a common center line with the inlet passage 4 and the outlet passage 5.

In the above water stop device, when repairing or replacing the water on the downstream side of the temporary fastening device 3, the cock 12 of the temporary fastening device 3 is closed. Further, in the case of upstream of the temporary fixing device 3, the temporary fixing device 3 is once closed, the blocking plug 11 is removed, and the water stop implement is inserted from the opening 10 of the outlet passage 5. Next, the cock 12 of the temporary fixing device 3 is opened, and the tip of the water stop implement is pushed into the retracting pipe 1 through the through hole 13. At a suitable position in the lead-in pipe 1, the packing of the water shut-off tool is inflated by remote control to stop the water, and then repair and replacement are performed.

It should be noted that although there is some water outflow after opening the temporary fixing device 3 and before inflating the packing, this does not hinder the work.

[Problems to be solved by the device]

The above water stop device can achieve the intended purpose, but has a drawback that the entire structure is large because the temporary stop device 3 is required in addition to the water stop plug 6.

In view of this, the technical problem of this invention is to reduce the size of the device by integrating the functions of the water stopcock 6 and the temporary fixing device 3.

[Means for Solving the Problems]

In order to solve the above problems, the first means of the present invention is
An inlet passage and an outlet passage are provided on the same center line of the main body of the apparatus, a cock is rotatably inserted into a cock chamber provided therebetween, and a water stop having a central axis common to the above central axis at a closed position of the cock. Provide a cock with a through hole for tool insertion,
When the cock is in the open position, a valve hole that connects the inlet passage and the outlet passage is provided in the cock so as to be orthogonal to the through hole, and a valve seat is provided in the valve hole that is orthogonal to the valve hole. This is a water stop device in which a valve element is placed on a seat and an operating shaft screwed from the upper part of a cock is fitted or engaged with a valve rod of the valve element.

Further, the second means is that the inlet passage and the outlet passage of the apparatus main body are provided in a stepwise parallel manner, the cock is rotatably inserted into the cock chamber provided therebetween, and the repair has a central axis line common to the inlet passage. When the cock is in the open position, a water passage is provided in the main body of the apparatus, and the cock has a through hole for inserting a water stoppage having a central axis common to the central axis of the inlet passage and the repair passage at the closed position of the cock. , A valve hole that connects the inlet passage and the outlet passage is provided in the cock so as to be orthogonal to the through hole, and a valve seat is provided in the valve hole or through hole outlet that intersects the valve hole at the same time, and a valve element is provided on the valve seat. Is mounted, and the operation shaft screwed in from the upper part of the cock is fitted or engaged with the valve rod of the valve body to form a water stop device.

[Action]

In the water stop device according to the above-mentioned first means, if repair or replacement is required on the downstream side of the water stop device, the operation shaft is tightened to press the valve body against the valve seat to close the valve hole. This stops the water.

If there is no need for repair or replacement on the upstream side, if the valve body is separated from the operating shaft, rotate the device body 180 degrees downward with the valve body pressed against the valve seat, and move downstream. After removing the connecting pipe on the side, insert the water stop through the outlet passage. Then, when the operating shaft is retracted downward, the valve body descends by its own weight. After lowering the valve disc operating shaft to a position where the valve disc comes out of the through hole, rotate the cock to align the center lines of the inlet and outlet passages of the main unit with the center line of the through hole, and then attach the water shut-off tool. Push it to the upstream side, and remotely inflate the packing of the water stopper at an appropriate position to stop the water.

In the type in which the valve body is integral with the valve body operating shaft, it is not necessary to rotate the main body of the device, so after operating the operating shaft to let the valve body escape from the through hole, rotate the cock and perform the same procedure as above. Push the water stop.

In the water stop device according to the second means, if repair or replacement is required on the downstream side, the operation shaft is operated to press the valve body against the valve seat to stop the water. If there is no need for repair or replacement on the upstream side, remove the obstruction plug of the repair passage, insert the tip of the water stop into the repair passage, and then operate the cock to enter the center line of the through hole. Align it with the center line of the passage and the repair passage.

After that, push the tip of the water stop to the upstream side to stop the water.

[First Embodiment] A water shut-off device according to a first embodiment shown in FIG. 1 is provided with a cock chamber 21 having an open upper end in a central portion of a device body 20, and an inlet passage 22 and an outlet on both sides of the cock chamber 21. The passages 23 are provided so that they have a common central axis.

A cock 24 is inserted into the cock room 21. The cock 24 is divided into upper and lower halves at the central portion and is integrated by screw connection. The upper end of the cock 24 is sealed by a packing 25 and a packing retainer 26, and a prismatic portion 28 at the upper end projects above the packing retainer 26.

An inlet side valve hole 27 is provided in the lower end surface of the cock 24, and an outlet side valve hole 27 'is provided in the side surface thereof. These valve holes 27 and 27 'communicate with a valve chamber 29 provided inside the cock 24. Inlet valve hole
A valve seat 30 is provided on the inner diameter surface of 27. A valve body 31 is inserted into the valve chamber 29, and the valve body 31 rests on the valve seat 30 by its own weight. The valve body 31 is contracted into the valve chamber 29 in a state where the divided portion of the central portion of the cock is separated. The operating shaft 32 is located above the valve chamber 29.
Is screwed in. The outer periphery of the upper end of the operation shaft 32 is sealed by a packing 43, protrudes above the cock 24, and a handle 33 is detachably attached.

The valve rod 34 of the valve body 31 is loosely inserted into the lower end hole 35 of the operating shaft 32, and the valve body 31 can freely move in the vertical direction in a normal state. When the operation shaft 32 is tightened, the valve rod 34 is pressed by the inner end of the lower end hole 35, so that the valve body 31 is pressed against the valve seat 30 and the valve hole 27 is closed.

Further, in the valve chamber 29, a through hole 36 orthogonal to the valve holes 27 and 27 'is provided (see FIG. 2).

In this through hole 36, the cock 24 has an opening angle, and the valve hole 27,
When 27 'is opened, it is closed by the inner wall of the cock chamber 21 as shown in FIG. 2, but when the cock 24 is rotated 90 degrees from the above state, the through hole 36 is opened. The through hole 36 is formed so as to have a common center line with the inlet passage 22 and the outlet passage 23 in the open state.

The water stop device configured as described above is provided with an inlet passage 22 and an outlet passage 23.
Connect the connecting pipes 39 and 40 to the nuts 37 and 38, respectively,
Further, the connecting pipes 39 and 40 are connected to an upstream side intake pipe 41 and a downstream side intake pipe 42.

In the water supply facility provided with the above water stop device, when it becomes necessary to repair or replace it on the downstream side of the water stop device, the handle 33
The valve rod of the valve body 31 at the inner end of the lower end hole 35 of the operating shaft 32.
34 is pushed, the valve body 31 is pushed against the valve seat 30, and the valve hole 27 is closed. Since water is stopped by this, repair or replacement is performed by removing the connecting pipe 40 or the like.

If repair or replacement is required upstream of the water shut-off device, loosen the nuts 37, 38 on both sides slightly while the valve body 31 is pressed against the valve seat 30 by the operating shaft 32 as described above. , Third
As shown in the figure, the device body 20 is rotated 180 degrees downward. In this state, the connecting pipe 40 on the downstream side is removed, and the tip portion of the water stop implement 45 is inserted.

As shown in FIG. 5, the water stop implement 45 has a cylindrical rubber packing 49 fitted between an end plate 47 fixed to the tip of a screw shaft 46 and a holding nut 48 fitted to the screw shaft 46. Above presser nut
The hexagonal column portion of 48 is fitted into a hexagonal connection port 51 formed at one end of the outer pipe 50. Operation rod connected to the screw shaft 46
52 penetrates the inside of the outer pipe 50 and projects from a handle 53 at the other end of the outer pipe 50. An operation handle 54 is attached to the protruding end.

As described above, the packing 49 portion of the waterstop 45 is attached to the main body 20
After being inserted in the outlet passage 23 of the
Put a tool such as a wrench on it and rotate it 90 degrees.
Communicates between the inlet passage 22 and the outlet passage 23. As a result, water flows out toward the outlet passage 23.

Therefore, when the handle 33 is operated and the operation shaft 32 is pulled out downward, the valve body 31 descends by its own weight and the through hole 36 is completely opened, so that the tip of the water stop implement 45 is set as shown in FIG. Push it up to the upstream side intake pipe 41, and here the operation handle 54 of the waterstop 45
By rotating and pulling back the screw shaft 46,
Inflate. When the packing 49 comes into close contact with the inner wall of the lead-in pipe 41, the water is stopped.

In the above embodiment, since the valve body 31 and the operating shaft 32 are separate bodies, in order to forcibly move the valve body 31 to the open position, the apparatus main body 20 should be turned downward as shown in FIG. I had to rotate it once.

However, if the valve rod 34 of the valve body 31 is integrated with the operation shaft 32 as in the second embodiment shown in FIG. 4, the operation of the operation shaft 32 may forcefully raise the valve body 31. In this case, it is not necessary to rotate the apparatus main body 20 downward because it can be lowered.

That is, by rotating the operation shaft 32, the valve body 31 is moved through the through hole 36.
After retreating from the portion of (1), the cock 24 is rotated, the inlet passage 22 and the outlet passage 23 are communicated with each other through the through hole 36, and then the water stop implement 45 is pushed to the upstream side to stop water.

Next, the third embodiment shown in FIG. 6 to FIG.
Is inserted into the cock chamber 21 in a 90 degree direction different from that of the operating shaft 32. The tip of the cock 24 projects laterally of the device body 20 (see FIG. 7), and the packing 56 and the packing retainer 57
The seal is achieved by and. A handle 58 is detachably attached to the protruding end of the cock 24. As shown in FIG. 6, the cock 24 is provided with a vertical through hole 36, and a lower end portion of the cock 24 serves as an inlet valve hole 27. The outlet valve hole 27 is formed in a direction orthogonal to the through hole 36. 'Is provided. A valve seat 30 is provided in the inlet side valve hole 27, and the valve element 31 inserted in the through hole 36 rests on the valve seat 30. The upper end of the valve stem 34 of the valve body 31 is
Is loosely inserted into the lower end hole 35 of the. The operation shaft 32 is the main body of the device
The seal is screwed into the screw member 59 screwed into 20. A handle 33 is detachably attached to the upper end of the operation shaft 32.

The inlet passage 22 and the outlet passage 23 of the device body 20 are connected to the connecting pipes 39 and 40 and the lead-in pipes 41 and 42, respectively.

In the water shut-off device of the above embodiment, when repair or replacement is required on the downstream side, the handle 33 of the operating shaft 32 is operated to press the valve rod 34 at the upper end of the lower end hole 35 of the operating shaft 32, The body 31 is pressed against the valve seat 30 to stop the water.

Further, when repairing or replacement is required on the upstream side, the device body 20 is rotated downward by 180 degrees, and the valve body 31 is caused to escape from the through hole 36 by its own weight, and then the downstream side connection is made. The pipe 40 is removed, and the tip portion of the water stop implement 45 is inserted. Next, rotate the handle 58 of the cock 24 90 degrees to
As shown in the figure, the center line of the through hole 36 is aligned with the center lines of the inlet passage 22 and the outlet passage 23, and the tip of the water stop implement 45 is pushed to the upstream side to stop water.

Next, in a fourth embodiment shown in FIG. 9, a through hole 36 orthogonal to the inlet valve hole 27 is provided, and a repair passage 61 is provided at the lower part of the outlet passage 23 provided in a stepwise parallel to the inlet passage 22. It is provided. The repair passage 61 is provided so as to be on the same axis as the inlet passage 22, and a closing plug 63 is screwed into an opening 62 of the repair passage 61. cock
When 24 is closed, the through hole 36, the inlet passage 22 and the repair passage 61 are on the same axis. The other structure is the same as that of the first embodiment.

In the above water stop device, the handle 33 is operated to press the lower end hole 35 of the operation shaft 32 against the valve rod 34, and the valve body 31 is pressed against the valve seat 30 to stop water. This enables repair and replacement on the downstream side.

When performing repair or replacement on the upstream side, remove the blocking plug 63 and insert the tip of the water stop implement 45 into the repair passage 61, and then rotate the cock 90 degrees to make the inlet passage 22 through the through hole 36. And the repair passage 61 are communicated with each other. After that, the water stop tool 45 is pushed to the upstream side to stop water in the same manner as described above.

The fifth embodiment shown in FIG. 10 is similar to the fourth embodiment in that the inlet passage 22
The outlet passages 23 are provided in parallel with each other, and the cock 24 is housed in the direction orthogonal to the operation shaft 32 as in the third embodiment (FIGS. 6 to 8). Cock 24
A through hole 36 is provided in the vertical direction, and an inlet side valve hole 27 communicating with the inlet passage 22 is provided in the through hole 36. Through hole
The valve seat 30 is formed on the upper end of the valve 36, and the valve element 31 is placed on the valve seat 30. The valve rod 34 of the valve body 31 is integrated with the lower end of the operating shaft 32. The operation shaft 32 is a screw member screwed onto the upper end of the device body 20.
It is screwed into 59.

Further, a repair passage 61 is provided in the device body 20. This repair passage 61 allows the cock 24 to move to the right or left from the state shown in FIG.
It is provided at a position where the center line is common to the through hole 36 and the inlet passage 22 when rotated once. A plug 63 is screwed into the opening 62 of the repair passage 61.

Also in the case of the fifth embodiment described above, when repairing or replacing at the downstream side, the operation shaft 32 is operated and the valve body 31 is pressed against the valve seat 30 to stop water, as in the case described above. In addition, when repairing or replacing the cock 24 on the upstream side, if the handle (not shown) of the cock 24 is rotated 90 degrees after operating the operating shaft 32 from the state shown in FIG. Rotates 90 degrees to the right or left. As a result, the through hole 36, the inlet passage 22, and the repair passage 61 are aligned on a straight line, so that the water stop implement 45 can be inserted in the same manner as in the above case.

[Effect of device]

As described above, according to the present invention, since the water stopcock and the temporary stop cock, which are conventionally provided separately, are integrated into one device body, there is an effect that the device becomes compact.

[Brief description of drawings]

FIG. 1 is a sectional view of the first embodiment, FIG. 2 is a sectional view taken along line II-II of the same as above, FIG. 3 is a sectional view of the same as above in a water-stopped state, and FIG. 4 is a water stop of the second embodiment. Sectional view of the state, FIG. 5 is a partially omitted sectional view of the waterproofing device, FIG. 6 is a sectional view of a third embodiment, FIG. 7 is a sectional view taken along line VII-VII of the above, and FIG. FIG. 9 is a sectional view of a fourth embodiment, FIG. 10 is a sectional view of a fifth embodiment, and FIG. 11 is a sectional view of a conventional example. 20 …… Main unit, 21 …… Cock chamber, 22 …… Inlet passage, 23 …… Outlet passage, 24 …… Cock, 25 …… Packing, 26 …… Packing retainer, 27 …… Inlet valve hole, 27 ′ ...... Outlet valve hole, 28 …… Pillar, 29 …… Valve chamber, 30 …… Valve seat, 31 …… Valve element, 32 …… Operating shaft, 33 …… Handle, 34 …… Valve rod, 35… … Lower end hole, 36 …… through hole, 37 …… nut, 38 …… nut, 39 …… connection pipe, 40 …… connection pipe, 41 …… inlet pipe, 42 …… inlet pipe, 43 …… packing, 45 …… Water stopper, 46 …… Screw shaft, 47 …… End plate, 48 …… Pressing nut, 49 …… Packing, 50 …… Outer pipe, 51 …… Connection port, 52 …… Operating rod, 53 …… Handle, 54 …… Operating handle, 56 …… Packing, 57 …… Packing retainer, 58 …… Handle, 59 …… Screw member, 61 …… Repair passage, 62 …… Opening, 63 …… Blocking plug.

Claims (2)

[Scope of utility model registration request] 1. An inlet passage 22 and an outlet passage 23 are provided on the same center line of an apparatus main body 20, and a cock 24 is rotatably inserted into a cock chamber 21 provided between the inlet passage 22 and the outlet passage 23. The cock 24 is provided with a through hole 36 for inserting a waterproofing member having a central axis common to the central axis, and when the cock 24 is in the open position, a valve hole 27 that communicates the inlet passage 22 and the outlet passage 23, 27 'is provided in the cock 24 so as to be orthogonal to the through hole 36, and a valve seat 30 is provided in the valve hole 27 which is orthogonal to the cock 24,
A water stop device comprising a valve body (31) mounted on the valve seat (30), and an operating shaft (32) screwed from the upper part of a cock (24) fitted or engaged with a valve rod (34) of the valve body. 2. An inlet passage 22 and an outlet passage 23 of an apparatus main body 20 are provided in a stepwise parallel manner, and a cock 24 is rotatably inserted into a cock chamber 21 provided between them, and a central axis line common to the inlet passage 22 is provided. The repairing passage 61 having the above is provided in the device main body 20, and at the closed position of the cock 24, the cock 24 is provided with a through hole 36 for inserting a water stoppage having a central axis common to the central axis of the inlet passage 22 and the repairing passage 61. A valve hole 27, 27 'or 27 for connecting the inlet passage 22 and the outlet passage 23 when the cock 24 is in the open position.
Is provided in the cock 24 so as to be orthogonal to the through hole 36, and the valve seat 30 is provided in the valve hole 27 or the outlet of the through hole 36 which is orthogonal to the through hole 36, and the valve element 31 is placed on the valve seat 30 and the upper part of the cock A water shut-off device in which an operating shaft (32) screwed in from is fitted or engaged with a valve rod (34) of a valve body.