JPH0718074U - Stopcock - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a water stopcock that can completely stop water at a price comparable to that of conventional water stopcocks with almost no change in size. [Structure] A curved surface 30a formed at a tip portion of a stopper 30 and a curved surface 17a formed on an inner wall 17 constitute a metal seal portion made of metal for closing a pipe line 16. Further, below the curved surface 30a of the stopper 30, a rubber ring 38 is wound around the stopper 30 in the circumferential direction thereof so as to be in contact with the inner wall 17 to close the pipe line 16.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water stopcock that is installed, for example, in the middle of a water supply pipe and stops water flowing through the water supply pipe.

[0002]

[Prior art]

 The tip of the rod-shaped stopper is wrapped around the stopper in the circumferential direction with an elastic body such as synthetic rubber, and the stopper is moved in the direction in which the conduit connected to the water supply pipe extends. Conventionally, there is known a water stopcock having a structure in which the pipe is closed by contacting it in the circumferential direction to stop the water flowing through the water supply pipe. The elastic body surrounding the tip of the plug may be worn or damaged, and if this elastic body wears or damages and creates a gap between the elastic body and the inner wall of the pipeline, water will pass through this gap. , I can't stop the water completely. For this reason, for example, two water stoppers should be installed in series in the middle of the water supply pipe to make one spare, or one water stopper should be provided with two stoppers and one stopper should be used as a spare. Therefore, the water flowing through the water supply pipe is completely stopped.

[0003]

[Problems to be solved by the device]

 However, using two water stoppers doubles the cost as compared with one, and providing two stoppers increases the size of the water stopper. Moreover, in the conventional water stopper, the water is stopped by contacting the elastic body surrounding the stopper with the inner wall of the pipeline, so if the elastic body is worn or damaged, two water stoppers or two stoppers will be used. Even if used, water may not be completely stopped.

In view of the above circumstances, an object of the present invention is to provide a water stopcock capable of completely stopping water at the same cost and size as a conventional water stopcock.

[0005]

[Means for Solving the Problems]

 A water stopcock of the present invention for achieving the above object comprises a first opening through which a fluid flows in, a second opening through which a fluid flows out, the first opening and the second opening. A conduit having a bent portion connecting the two, a third opening formed in the bent portion, and a conduit of the conduit inserted into the conduit through the third opening. A water stopcock having a rod-shaped stopper that opens and closes the pipeline by moving in the extending direction, wherein the stopper surrounds the stopper in the circumferential direction and contacts the inner wall of the pipeline in the circumferential direction. It is characterized by comprising an elastic body that closes the pipeline and a metal seal part made of metal that is in contact with the inner wall of the pipeline in the circumferential direction to close the pipeline.

[0006]

[Action]

 In the water stopcock of the present invention, the elastic body and the metal seal part respectively contact the inner wall of the pipe in the circumferential direction to close the pipe, so that the pipe can be closed double. Further, even if the elastic body is worn or damaged, the metal seal portion can close the pipeline, so that the fluid flowing through the pipeline can be stopped. In addition, since the plug has an elastic body and a metal seal part, it will be a water plug with the same cost and size as a conventional water plug.

[0007]

【Example】

 Hereinafter, an embodiment of the water stopcock of the present invention will be described with reference to the drawings. FIG. 1, FIG. 2 and FIG. 3 show a first embodiment of a water stopcock of the present invention, respectively, a sectional view showing a closed state of a pipe, a sectional view showing a state of opening a pipe, and a rod-like shape. It is sectional drawing which expands and shows the front-end | tip part of a stopper.

The water stop plug 10 has, for example, openings 12 and 14 to which a water supply pipe (not shown) is connected, a bent conduit 16 that connects the openings 12 and 14, and an opening formed by forming a screw on the inner wall. A water stop main body 20 having a tubular portion 18 connected to the pipeline 16 via the mouth portion 16a, and a screw formed on the outer peripheral surface and screwed into the tubular portion 18, and moves in the extending direction of the pipeline 16. It is composed of a rod-shaped stopper 30. A curved surface 17a is formed on the inner wall 17 of the conduit 16, and a curved surface 30a is formed at the tip of the plug 30. The curved surfaces 17a, 30a constitute a metal seal portion made of metal. Further, below the curved surface 30a of the stopper 30, a rubber ring 38 is wound in the circumferential direction of the stopper 30. The cylindrical portion 18 is covered with a lid 24 via a packing 22, and an O-ring 26 provided on the lid 24 has a stopper 30 penetrating therethrough so that water flowing through the pipe line 16 does not leak to the outside. A handle 34 is fixed to the stopper 30 with a screw 36 via a washer 32. To close the conduit 16, the handle 34 is rotated clockwise. As a result, the curved surface 30a formed at the tip of the plug 30 contacts the curved surface 17a formed on the inner wall 17 of the conduit 16, and the conduit 16 is closed. Further, the pipe 16 is closed by the rubber ring 38 coming into contact with the inner wall 17.

The curved surface 17 a is originally formed so that when the rubber ring 38 contacts the inner wall 17, the rubber ring 38 is not damaged at the corners of the inner wall 17, but the water blocking of this embodiment is performed. In the stopper 10, a curved surface 30a that contacts the curved surface 17a is formed at the tip of the stopper 30. Therefore, the curved line 17a formed on the inner wall 17 and the curved face 30a formed on the plug 30 are in contact with each other to close the pipe line 16, and the rubber ring 38 is also in contact with the inner wall 17 in the circumferential direction. Since the pipe is closed, the pipeline will be closed twice. Further, even when the elastic body is worn or damaged, the curved surface 17a and the curved surface 30a are brought into contact with each other to close the conduit 16, whereby the fluid flowing through the conduit 16 can be stopped. Moreover, since the curved surface 30a is formed by wrapping the rubber ring 38 around the tip of the stopper 30, the size is almost the same as that of the conventional water stopper and the size is hardly changed.

FIGS. 4, 5 and 6 show a second embodiment of the water stopcock of the present invention, respectively, a sectional view showing a closed pipe line and a sectional view showing a opened pipe line, respectively. FIG. 3 is an enlarged cross-sectional view showing the tip portion of the stopper, and the same elements as those in the above-described first embodiment are denoted by the same reference numerals. The water stopper shown in the second embodiment is different from the water stopper shown in the first embodiment in the shape of the tip portion of the stopper 30 and is otherwise the same, so the difference will be described here. .

A curved surface 30b is formed at the tip of the stopper 30 in the circumferential direction of the stopper 30, and a rubber ring 38 is wound around the stopper 30 in the circumferential direction slightly above the curved surface 30b. When the handle 34 is rotated clockwise, the curved surface 30b is in contact with the curved surface 17b formed on the inner wall 17 of the conduit 16 in the circumferential direction, and the conduit 16 is closed. Further, the rubber ring 38 wound around the stopper 30 comes into contact with the inner wall 17 to close the conduit 16.

In the water stopcock of the second embodiment, the curved line 17b formed in the pipe line 16 and the curved face 30b formed in the plug 30 are brought into contact with each other to close the pipe line 16, and the rubber ring 38 is further attached. The pipe line 16 is also closed by contacting the inner wall 17, so that the pipe line is closed twice, and even if the elastic body is worn or damaged, the curved face 17b and the curved face 30b are in contact with each other in the circumferential direction, so that the pipe is closed. The line can be closed and the fluid flowing through line 16 can be stopped. Moreover, since the curved surface 30b is formed by surrounding the rubber ring 38 around the tip of the stopper 30, the price is almost the same as that of the conventional water stopper and there is almost no change in size.

[0013]

[Effect of device]

 As described above, in the water stopcock of the present invention, the elastic body and the metal seal portion are in contact with the inner wall of the pipeline in the circumferential direction to close the pipeline. Therefore, the pipeline can be closed double. Even if the elastic body is worn or damaged, the metal seal portion can close the pipeline, so that the fluid flowing through the pipeline can be stopped. In addition, since the plug has an elastic body and a metal seal part, it is a price that is about the same as a conventional water hydrant and is almost unchanged in size.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of a water stopcock of the present invention, showing a state in which a pipe line is closed.

FIG. 2 is a cross-sectional view showing a state in which a conduit of the water stopcock shown in FIG. 1 is opened.

FIG. 3 is an enlarged cross-sectional view showing a tip portion of the stopper of the water stopcock shown in FIG.

FIG. 4 is a cross-sectional view showing a second embodiment of the water shutoff device of the present invention, showing a state in which the conduit is closed.

FIG. 5 is a cross-sectional view showing a state in which a conduit of the water stopcock shown in FIG. 4 is opened.

FIG. 6 is an enlarged cross-sectional view showing the tip end portion of the water stopper shown in FIG.

[Explanation of symbols]

 10 Water Stopcock 12,14 Opening 16 Pipeline 18 Tube 20 Waterstop Main Body 17a, 17b, 30a, 30b Curved Surface 30 Plug 38 Rubber Ring

Claims (1)

[Scope of utility model registration request] 1. A first opening through which a fluid flows in, a second opening through which a fluid flows out, the first opening and the second opening.
And a third opening formed in the bent portion, the conduit being connected to the openings of the second opening, and the conduit inserted into the conduit through the third opening. In a water stopcock having a rod-shaped stopper that opens and closes the pipeline by moving in the extending direction of the An elastic body that closes the conduit,
A water stopcock, comprising: a metal seal part made of metal that closes the pipeline by contacting an inner wall of the pipeline in the circumferential direction.