JP2000265501A - Drainage straight stop valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage straight stop valve capable of easily performing replacement of components or maintenance and inspection thereof since the drainage straight stop valve is so constituted that it is fixed by directly screwing a packing box slidingly guiding a top packing for opening and closing a water hole in an inner cylinder having an upper valve rod therein, a drain of the residual water is formed by the inner cylinder and the packing box so that the structure of the packing box is complicated and, at the same time, that the process of disassembly is complicated. SOLUTION: An upper valve rod 3 and a lower valve rod 2 are connected with a socket body 7, and an inner cylinder 8 having the upper valve rod therein and a packing box 5 are connected with a grand socket body 6 having a structure constituting a drainage channel when a water hole is closed. In addition, a top hanging flange 21 is provided to the front end of the lower valve rod, at the same time, a to packing is divided into a main body 41 and a cover body 42 and is screwed from up and down across the top hanging flange, and it is provided to the front end of the lower valve rold in a detachable manner. A cushion member 43 is laid on a contact surface part of the bottom of the packing box contacting the upper surface of the top packing when the upper surface of the top packing or the lower valve rod is raised.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water stopcock in a water supply pipe, in particular, a water stopcock installed underground. The present invention relates to a water stoppage faucet for preventing erosion of parts inside the faucet due to water.

[0002]

Heretofore, in this type of water drainage faucet, a packing box for slidingly guiding a top packing for opening and closing a water passage is fixed by screwing directly to an inner cylinder having an upper stopper rod therein. However, since the residual water drain passage is formed by the inner cylinder and the packing box, the structure of the packing box becomes complicated, and the disassembly setup is complicated, and replacement of parts or maintenance and inspection is extremely troublesome. there were.

Further, since the top packing is integrally formed by attaching a rubber valve body as a separate component to a required portion of a metal shaft body, and is directly attached to the tip of the lower stopper rod by screwing the shaft body. A great deal of labor and time was required to replace the top packing, which is easily worn.

[0004] Furthermore, since the top contact portion of the top packing of the top packing which is attached to the tip of the lower stopper rod and which comes into contact with the bottom of the packing box when the lower stopper rod rises is made of metal, the packing is also made of metal. If the state of contact with the bottom of the box lasts for a long time, it will stick due to corrosion or the like, and there is also a problem that the opening and closing operation cannot be performed.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has an upper plug and a lower plug connected by a socket, and further, an inner cylinder containing the upper plug and a packing. By connecting the box with a ground socket body that forms a drainage channel when the water inlet is closed, the socket body and the ground socket body can be easily separated to separate the drainage channel unit consisting of the packing box and the lower plug. It is configured so that replacement of parts or maintenance inspection can be performed easily.

Further, a top hanging flange is provided at the tip of the lower stopper rod, and the top packing is divided into a main body and a lid, and screwed from above and below with the hanging flange interposed therebetween and detachably attached to the tip of the lower stopper rod. By doing so, only the main part of the top packing, which is easily worn, can be replaced.

In addition, a cushioning material is laid on the upper surface of the top packing or the bottom surface of the packing box where the upper surface of the top packing comes into contact when the lower stopper rod is raised, so that the upper surface of the top packing and the bottom of the packing box are laid. Even if the state of contact with the substrate continues for a long time, it is configured not to cause a situation such as sticking due to corrosion or the like, and opening / closing operation being disabled.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a water stopcock body, the inside of which is partitioned by a partition wall 11 into a primary water passage 12 and a secondary water passage 13. A water passage 14 is formed in the partition wall to communicate the primary and secondary water passages, and a valve seat 15 is formed facing the water inlet.

A top packing 4 which comes into contact with the valve seat and fits into the water inlet to stop water is mounted on the tip of the lower stopper rod 2, and the lower stopper rod is disposed through the packing box 5. . The top packing 4 is divided into a main body 41 and a lid 42,
Is configured to be screwed from above and below with a top hanging flange 21 provided at the tip of the top and detachably attached to the lower stopper rod 2, and that the upper surface of the top packing comes into contact when the lower stopper rod is raised. A cushion material 43 is laid on the upper surface of the lid 42, which is a contact surface portion of the bottom 59 of the box.

The packing box 5 has an insertion hole 51 in the center thereof for inserting the lower stopper rod 2, and its base is attached to the upper part of the water stopcock body 1, that is, facing the water passage 14 on the secondary side. 52
Is screwed to the water stopcock main body 1. At the lower end side of the insertion hole 51, a female screw portion 58 that is screwed with the male screw portion 26 engraved on the lower plug 2 is provided, and the lower plug is moved up and down by rotation of the lower plug. I have. The screw surfaces of the male screw portion 26 and the female screw portion 58 that vertically move the lower stopper rod are provided with a drain groove 27 by cutting the screw surface vertically, and the inner side of the secondary water passage 13 extends from the inner space of the packing box. It constitutes a drainage channel to 57.

The upper side of the packing box 5 is fitted into the lower part of the gland socket 6 and is fastened and fixed in the gland socket 6 by a truss small screw 53 from the outside, and the upper end is formed with a gland packing 54 through which the lower plug 2 is inserted. Grand cap 56
Covered by.

The gland packing 54 is made of a tubular flexible material, is inserted into the upper end of the packing box 5 and is clamped and fixed by a gland cap 56 screwed into the packing box 5 from above. A flange 55 is formed in contact with and covers the upper end surface of the lower plug 2 so as to maintain watertightness against the movement of the lower stopper rod 2 which moves up and down by sliding on the inner diameter portion.

The ground socket 6 inserts and holds the packing box 5 on the lower end side, and is screwed and connected on the upper end side to the inner cylinder 8 containing the upper stopper rod 3, and is fixed by a spring pin 61. Lower lumen communicating with drainage channel 91 formed by the gap between cylinder 9 and the outer periphery of ground socket 6
62 is provided facing a gap 63 between the packing box 5 and the ground socket 6.

On the upper side of the lower tap rod 2, a vertical water passage 22 is provided along the axis, and the water passage 22 is provided with side water passages 23 and 24 at the top and bottom. The body 1 that descends
In the water stop position, the side water passage 23 is
The side water passage 24 is formed in the lower lumen 62 of the packing box 5.
57, the packing box inner cavity 57, the side water passage 24, the water passage 22, the side water passage 23, the lower cavity 62 of the ground socket 6, and the packing box 5 A passage to the drainage channel 91 is formed through the gap 63 of the ground socket 6.

At the water channel opening position of the main body 1 where the lower plug 2 rises, the lower plug 2 stops at a position where the side water passage 24 is closed by the gland packing 54, so that the lower lumen of the ground socket 6 is provided. The path to section 62 is adapted to be closed. The ball 25 is housed in the water passage 22 to prevent backflow.

On the outer side of the upper part of the main body 1 of the water stopcock, an outer cylinder 9 which extends upward while containing the portion where the packing box 5 is attached.
A drain port 92 is formed near the lower end of the outer cylinder, and a mudguard cover 93 made of rubber or the like that protects the drain port 92 and guides drainage downward is provided on the outer cylinder 9. It is attached to the outer periphery of the lower end.

Inside the outer cylinder 9, an inner cylinder 8 screwed to the upper part of the ground socket 6 is provided. Inside the inner cylinder, the upper end of the lower plug 2 and the lower end of the upper plug 3 are socketed. 7 and the upper end of the upper stopper rod 3 is
Is screwed and connected to the handle shaft 32 on which is fitted, so that when the handle 31 is operated, the upper and lower plugs are integrally driven.

The upper end of the inner cylinder 8 is provided with a cover plate 81 provided on the upper end of the outer cylinder 9 and a spring pin provided on the cap 82.
It is fixed by 83 and can be easily dissociated from the outer cylinder.

At the lower part of the inner cylinder 8, a water passage for the lower stopper rod 2 is provided.
22, a gland socket 6 into which a packing box 5 constituting a residual water discharge path is cooperated with the side water passages 23 and 24 is screwed. The switching of the water passage constituted by 6 is performed.

That is, when the handle 31 is rotated, the lower plug 2 is rotated via the upper plug 3 and the socket 7, and the screw portion is turned.
The lower tapping rod 2 is moved up and down by the screw feed of 26 and 58, and the top packing 4 is moved to a position where it closes or opens the water passage opening, and the side water passages 23 and 24 are formed in the lumen. It can be opened and closed.

Next, the operation of the water stopcock of the present invention will be described.
When the water stopcock is opened and the water supply is in use, the top packing 4 is pulled upward, and the primary and secondary water passages communicate with each other through the water inlet 14, and the water flows in the direction indicated by the arrow in FIG. As shown by, it flows from the primary side to the secondary side, and is discharged from, for example, a faucet provided on the secondary side.

At night when tap water is not required, when the handle 31 is turned to lower the lower tap rod 2 to stop the water stopcock, the top packing 4 closes the water inlet 14 and the water stopcock is closed. . In this state, since the water pressure on the secondary side becomes zero, the water pressure due to the height difference between the water stopcock and the faucet is applied from the opposite direction.

With this water pressure, the water stopcocks are stopped and, at the same time, the side water passages 23 and 24 are opened in the lumen 57 and the lumen 62, and the secondary water is passed through the drain grooves 27 provided in the screw portions 26 and 58. Water accumulated in the gland socket 6 flows out of the lower lumen 62 of the gland socket 6 through the gap 63 between the packing box 5 and the gland socket 6 as shown by an arrow in FIG.

When the top packing 4 closes the water inlet 14 in this manner, almost all of the water from the secondary water passage of the water stopcock to the faucet is discharged. Rupture accident is eliminated.

Since the present invention is constructed as described above, it can be easily disassembled, and the gland packing 54 or the like which is easily worn can be easily replaced. That is, when the upper end of the inner cylinder 8 is rotated, the packing box 5 is rotated via the ground socket 6, the screw engagement between the packing box 5 and the water stopcock main body 1 is released, and the packing box 5 is built in the outer cylinder 9. The unit body of the inner cylinder, the plug, the packing box and the top packing can be pulled out and taken out as it is.

Next, the handle 31 is removed, and the packing box 5 is tightened and fixed in the gland socket 6 using a truss machine screw 53.
Is removed, and the packing box 5 is separated from the ground socket 6. Further, by removing the spring pin 71 that locks the socket 7 and the lower plug 2, the upper plug 3 can be separated from the lower plug 2, the gland cap 56 can be removed, and the gland packing 54 can be taken out and replaced.

Further, when the main body 41 of the top packing is rotated to release the screw engagement with the lid body 42, the main body 41 is moved from the tip of the lower stopper rod 2.
Can be easily removed, and the wear packing integrated into the main body 41 can be replaced as it is.

Since the cushion member 43 is laid on the upper surface of the lid 42 which is the contact surface of the bottom portion 59 of the packing box to which the upper surface of the top packing comes into contact when the lower stopper rod rises.
Even if the state of contact with the bottom of the packing box continues for a long time, there is no possibility that the packing box is stuck due to corrosion or the like and the opening / closing operation cannot be performed.

[0029]

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a water stopcock according to an embodiment of the present invention with a part thereof omitted.

2 is a sectional view taken along the line AA in FIG.

FIG. 3 is an enlarged vertical cross-sectional view of a main part in a state where the top packing is similarly lowered.

FIG. 4 is an enlarged vertical cross-sectional view of a main part in a state in which the top packing is similarly raised.

[Explanation of symbols]

 1 Stopcock body 11 Partition wall 12 Primary side waterway 13 Secondary side waterway 14 Waterway 15 Valve seat 2 Lower plug rod 21 Top hanging flange 22 Waterway 23 Side waterway 24 Side waterway 25 Non-return ball 26 Below Male plug part 27 Drain groove 3 Upper plug rod 31 Handle 32 Handle shaft 4 Koma packing 41 Koma packing body 42 Koma packing lid 43 Cushion material 5 Packing box 51 Packing box insertion hole 52 Gasket 53 Truss screw 54 Gland packing 55 Gland Packing flange 56 Gland cap 57 Packing box inner cavity 58 Packing box internal thread 59 Packing box bottom 6 Gland socket 61 Spring pin 62 Lower lumen of gland socket 7 Socket 8 Inner cylinder 81 Cover plate 82 Cap 83 Spring Pin 9 External cylinder 91 Drainage channel 92 Drainage port 93 Mudguard cover

Claims (3)

[Claims] 1. The inside of a water stopcock body is divided into a primary side waterway and a secondary side waterway, and a water hole is provided in a partition wall, and a lower stopper rod provided with a top packing for opening and closing the water hole is vertically moved. In the water stopcock inserted through the packing box so that it can be operated in the direction, the upper stopper rod and the lower stopper rod are connected by a socket body, and further, the inner cylinder and the packing box that house the upper stopper rod, A water drainage stopcock connected by a ground socket having a structure that constitutes a drainage channel when the water inlet is closed. 2. A top hanging rod is provided with a top hanging flange at a tip thereof, and a top packing is divided into a main body and a lid body, and is screwed from above and below with the top hanging flange interposed therebetween so as to be detachably attached to the bottom end of the bottom plug. The water stoppage faucet according to claim 1, wherein 3. A packing material is laid on a contact surface portion of a bottom of a packing box to which the upper surface of the top packing or the upper surface of the top packing comes into contact when the lower stopper rod rises. Water drainage stopcock described