JP2007252744A - Fitting device for sprinkler head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply stop the water discharging from a sprinkler head after extinction of a fire, and also to prevent water from flowing out when an old sprinkler head is changed to the new one. <P>SOLUTION: A sprinkler head 5 is mounted on a pipe 1 filled with water for extinction, and it is equipped with a blocking means 50 which opens and closes the flow path 12 connecting from the pipe 1 for fire extinction to the sprinkler head 5 and a releasing means 45 for controlling the blocking means 50, which opens the valve of the blocking means 50 when the sprinkler head 5 is mounted on the pipe 1 and closes the valve when the sprinkler head 5 is taken off. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sprinkler head used in fire extinguishing equipment, and more particularly, to a sprinkler head fitting connected to a pipe filled with fire extinguishing water.

  As a fire extinguisher, a sprinkler head that operates during a fire and sprays water is known. In this sprinkler head, when the water discharge is started, the water discharge does not stop even if the fire is extinguished. Therefore, in order to stop the water discharge after the fire is extinguished, a fire extinguisher or the like must move to the control valve and close it. However, since this control valve is located on the base end side of the fire extinguishing pipe, the fire extinguishing worker or the like has to move there and perform the valve closing work, so it takes time until the water stops. Therefore, fire-extinguishing water is wasted and a problem of water loss also occurs.

Then, the following is known as a sprinkler head for solving the above problem (for example, see Patent Document 1). That is,
A pipe member, a shut-off ball that closes the water outlet of the pipe member, a wire that locks the shut-off ball connected to the shut-off ball at a position that does not interfere with the water flow of the pipe member, and the other end. An emergency water discharge stop device for a sprinkler fire extinguishing equipment comprising a locking means provided.
In Patent Document 1, when the locking means is removed, the blocking ball falls, the water outlet is closed, and watering stops.

Japanese Utility Model Publication No. 5-4846

  In addition to the above, there is one that takes in a signal from a fire detector and controls closing of an on-off valve connected to the head when the sensor output of the fire detector is lowered.

  Since the conventional example is provided with a wire, a fire detector, etc., the structure is complicated. In addition, since the wire locking means is provided at a position where the wire is easy to operate, there is a risk that the wire is detached from the locking means and the valve is closed by mischief.

  In view of the above circumstances, an object of the present invention is to easily stop water discharge from a sprinkler head after a fire is extinguished with a simple configuration. Another object is to prevent water from flowing out of the pipe when it is removed from the pipe in order to replace the old sprinkler head with a new one, not only after the fire is extinguished.

The present invention relates to a sprinkler head connected to a pipe filled with fire-extinguishing water; blocking means provided in a flow path in the pipe, and connected to the sprinkler head, and the blocking means is released from the flow path. Release means for bringing the sprinkler head into a state, and when the sprinkler head is removed from the pipe, the blocking means closes the flow path.

  The shut-off means of the present invention is a seal ball, and the release means includes a disc provided with a passage hole for fire-extinguishing water, and a rod provided at the center of the upper surface of the disc to push up the ball valve. Features. The sprinkler head according to the present invention includes a one-touch joint that can be connected to the pipe with one touch.

  The present invention relates to a sprinkler head connected to a pipe filled with fire-extinguishing water through a connecting cylinder; a valve seat in the connecting cylinder; and a valve member provided on the piping side of the valve seat; A sprinkler head is detachably provided on the connecting cylinder, and a rod for pushing up the valve member in the valve opening direction is provided on the sprinkler head.

The present invention relates to a sprinkler head connected to a pipe filled with fire-extinguishing water via a coupling; the coupling includes a female coupling to which the pipe is attached and a male to which the sprinkler head is attached. Consisting of a coupling,
The female coupling is provided with a valve seat, a valve body that presses against the valve seat, and a biasing means that biases the valve body in a valve closing direction, and the male coupling includes the valve A valve pushing projection for pushing the body in the opening direction is provided.

  The present invention relates to a sprinkler head attached to a pipe filled with fire-extinguishing water via a socket; the pipe is provided with a control valve, and the socket is provided with a sensor for detecting attachment / detachment of the sprinkler head. The sensor is connected to a control unit for operating the control valve.

The present invention comprises a blocking means provided in a flow path in a pipe, and a release means connected to the sprinkler head and releasing the blocking means from the flow path, and the sprinkler head is removed from the pipe. When removing, the blocking means closes the flow path, so the blocking means is released from the flow path by the release means, the flow path is in an open state, and the water in the pipe is filled up to the valve body of the head. is doing. For this reason, if the head operates, the water is discharged as it is.
When the fire has been extinguished and the fire is extinguished, remove the sprinkler head from the pipe. Then, the releasing means is removed together with the head, so that the pressing of the blocking means is released, and the blocking means falls and blocks and shuts off the flow path of the pipe.
Thus, water spraying from the head after the fire is extinguished can be stopped only by removing the activated sprinkler head from the pipe. In other words, the sprinkler head can be replaced without closing the control valve on the base end side of the pipe.

  In the connecting cylinder, a valve seat and a valve member provided on the pipe side of the valve seat are provided in the connecting cylinder, a sprinkler head is detachably provided in the connecting cylinder, and the valve member is provided in the sprinkler head. Since the rod that pushes up in the valve opening direction is provided, when the sprinkler head is attached to the connecting cylinder, the valve member is pushed by the rod and is separated from the valve seat, and the valve is opened, but when it is removed, the valve is closed. . Therefore, when the sprinkler head is removed from the connecting tube after the fire is extinguished, the valve member is immediately seated and the valve is closed, so that water discharge from the water discharge port stops.

  In this invention, the coupling includes a female coupling to which the pipe is mounted and a male coupling to which the sprinkler head is mounted. The female coupling is in pressure contact with the valve seat. Since the valve body and an urging means for urging the valve body in the valve closing direction are provided, and the male coupling is provided with a valve pushing projection for pressing the valve body in the opening direction. When the male coupling is attached to the female coupling, the valve body is pushed by the protrusion and is separated from the valve seat, and the valve is opened. When the male coupling is removed, the valve is closed. Therefore, when the male coupling with the sprinkler head is removed from the female coupling after the fire is extinguished, the valve body is immediately seated and the valve is closed, so that water discharge from the water discharge port stops.

  In this invention, the control valve is provided in the pipe, the sensor for detecting attachment / detachment of the sprinkler head is provided in the socket, and the sensor is connected to the control unit for operating the control valve, so the sprinkler head is attached to the socket. Then, although the said control part opens the said control valve and makes it a valve opening state, if it removes it, a control part will close the said control valve and will make it a valve closing state. Therefore, when the sprinkler head is removed from the connector after the fire is extinguished, the control valve is immediately closed and the valve is closed, so that water discharge from the water discharge port stops.

In order to solve the above problem, the present inventor considered that it is sufficient to stop water discharge immediately when the sprinkler head is removed from the pipe, and repeated research experiments. As a result, it turned out that it should do as follows.
(1) In a sprinkler head connected to a pipe filled with fire-extinguishing water; shut-off means provided in a flow path in the pipe, and connected to the sprinkler head, and the shut-off means is released from the flow path And release means.
(2) In a sprinkler head connected to a pipe filled with extinguishing water via a connecting cylinder: a valve seat and a valve member provided on the pipe side of the valve seat in the connecting cylinder. A sprinkler head is detachably provided on the connecting cylinder, and a rod is provided on the sprinkler head to push up the valve member in the valve opening direction.

  (3) In a sprinkler head connected to a pipe filled with fire-extinguishing water via a coupling; the coupling includes a female coupling to which the pipe is attached and a male cup to which the sprinkler head is attached. The female coupling is provided with a valve seat, a valve body pressed against the valve seat, and an urging means for urging the valve body in a valve closing direction, and the male coupling Has a protrusion for pressing the valve body in the opening direction.

(4) In a sprinkler head attached to a pipe filled with fire-extinguishing water via a socket; a control valve is provided in the pipe; and a sensor for detecting attachment / detachment of the sprinkler head is provided in the socket; The sensor is connected to a control unit that operates the control valve.
The present invention is based on the above knowledge.

A first embodiment of the present invention will be described with reference to FIGS.
A receiving joint 7 is attached to a fire extinguishing pipe 1 of a sprinkler fire extinguishing equipment installed in a detached house or a apartment house, and a sprinkler head 5 is connected to the receiving joint 7 through a one-touch joint 3. .
The one-touch joint 3 can be connected to the receiving joint 7 constituting a part of the fire-extinguishing pipe 1 by one-touch, and the fire-extinguishing pipe 1 is filled with fire-extinguishing water.
In the present embodiment, the receiving joint 7 and the one-touch joint 3 constitute a sprinkler head fixture.

  The receiving joint 7 includes a small tube 9 and a large tube 16 communicating with the small tube 9 through a through hole 12. The large cylinder 16 is provided with a notch 18 for the lock ball 17, and a slide cylinder 20 is provided on the outside thereof, and faces the notch 18 on the inner peripheral surface of the slide cylinder 20. A pressing convex portion 22 for the lock ball 17 is provided in the portion, and a spring 24 is stretched between the pressing convex portion 22 and the upper end portion of the large cylinder 16. The spring 24 biases the convex portion 22 in a direction in which the convex portion 22 comes into contact with the stopper 23. The stopper 23 is formed at the lower end of the outer peripheral surface of the large cylinder 16.

  A one-touch joint (mounting cylinder) 3 that is screwed into the head main body 30 is provided inside the large cylinder 16, and a portion of the outer surface of the one-touch joint 3 that faces the notch hole 18 is provided with the ball 17. A receiving groove 26 is provided. A female screw portion 38 is provided on the inner peripheral surface of the upper end portion of the one-touch joint 3, and a disk 40 is screwed into the screw portion 38.

  The disc 40 is provided with a plurality of quarter-circular fire-extinguishing water passage holes 42, and a push-up rod 45 projects from the center of the upper surface thereof. The rod 45 is supported by an arm 47 and connected to the disk 40, and pushes up a seal ball 50 that closes the through hole 12, thereby maintaining the through hole 12 in an open state. Since a male screw portion 43 that is screwed with the screw portion 38 is provided on the outer peripheral surface of the disc 40, the rod 45 is displaced by rotating the disc 40, and the position of the seal ball 50 is changed. Can be adjusted. In addition, you may form this disc 40 and the one-touch coupling 3 integrally.

The water outlet 54 of the sprinkler head 5 is closed by a valve body (not shown), and the valve body is supported by the thermal decomposition mechanism 35 via a balancer or an arm guide.
In the present embodiment, the seal ball 50 is an example of a blocking means provided in the through hole 12 as a flow path, and the rod 45 of the disc 40 is an example of a releasing means that releases the blocking means from the flow path. is there.

Next, the operation of this embodiment will be described.
When the thermal decomposition mechanism 35 senses heat and decomposes due to the occurrence of a fire, the valve body opens away from the water outlet 54, so that the fire extinguishing water is discharged from the water outlet 54 through the through hole 12.

  In order to remove the sprinkler head 5 from the fire-extinguishing pipe 1 after the fire is extinguished, the sliding ball 20 is slid upward against the spring force of the spring 24, and the lock ball 17 held by the holding protrusion 32. Moves outward and out of the receiving groove 26, the lock between the large cylinder 16 and the one-touch joint 3 is released. For this reason, when the sprinkler head 5 is pulled downward, the one-touch joint 3 comes out of the large tube 16, and the disk 40 with the push-up rod 45 is taken out of the vessel.

  Then, the seal ball 50 is released from the push-up rod 45 and falls, and closes and closes the through hole 12. That is, the stopper by the release means (push-up rod 45) is released, and the seal ball 50 is cut off. Therefore, the water discharge from the water discharge port 54 is stopped.

  Next, the sprinkler head 5 is replaced with a new one and attached to the one-touch joint 3. Then, the sliding cylinder 20 of the receiving joint 7 is pushed up, the one-touch coupling 3 fitted with the sprinkler head 5 is pushed into the large cylinder 16 of the receiving joint 7, and then the sliding cylinder 20 is pushed down. 26 and is pressed by the pressing convex portion 22 of the sliding cylinder 20, the one-touch joint 3 is locked. At this time, since the seal ball 50 is pushed up by the rod 45, the through hole 12 is opened, and the valve is opened from the shut-off state.

A second embodiment of the present invention will be described with reference to FIG.
The fire-extinguishing pipe 60 filled with water is connected to the sprinkler head SP via a straight cylindrical connecting cylinder 62. A spring receiver 66 is provided on the inner surface of the pipe 60, and a female screw portion 68 is provided at the lower end thereof.
In this embodiment, the connecting cylinder 62 constitutes a sprinkler head fixture.

  A valve seat 70 having a channel 69 at the center is provided in the connection cylinder 62. A valve member 72 is provided on the pipe 60 side of the valve seat 70. The valve member 72 includes a valve body portion 72a and a piston portion 72c connected to the valve body portion 72a via a cylindrical portion. The cylindrical portion is provided with a plurality of communication holes 72b. A coil spring 74 as a biasing means for biasing the valve member 72 in the valve closing direction is stretched between the piston portion 72c and the spring receiver 66.

  A male screw portion 62a that is screwed into the screw portion 68 is provided at the upper end portion of the connection cylinder 62, and a female screw portion that is screwed into the screw portion 64a of the head body 64 of the sprinkler head SP is provided at the lower end portion thereof. 62b is provided, and a sprinkler head SP is detachably provided on the connecting cylinder 62.

A disc 65 is screwed to the inner peripheral surface of the upper end portion of the head main body 64. This disc 65 is substantially the same as the disc 40 of FIG. 2 of the first embodiment, and this disc 65 has a plurality of passage holes 65a, and a push-up rod 67 projects from the center of the upper surface. . The rod 67 is supported by an arm, passes through the flow path 69, pushes up the valve body 72 a in the valve opening direction, and opens the flow path 69. A male screw portion 65 b is provided on the outer peripheral surface of the disc 65, and this male screw portion 65 b is screwed into a female screw portion 64 b on the inner peripheral surface of the upper end portion of the head body 64.
In this embodiment, the valve member 72 is an example of a blocking means, and the push-up rod 67 of the disc 65 is an example of a releasing means.

  The water outlet 71 of the head body 64 is closed by a valve body 73, and the valve body 73 is supported by a thermal decomposition mechanism 75 via a balancer or an arm guide.

Next, the operation of this embodiment will be described.
When the thermal decomposition mechanism 75 senses heat and decomposes due to the occurrence of a fire, the valve body 73 opens away from the water outlet 71, so that the fire extinguishing water is discharged from the water outlet 71 through the communication hole 72b, the flow path 69, and the passage hole 65a. The

After the fire is extinguished, when the head main body 64 is turned in a predetermined direction and removed from the connecting cylinder 62, the rod 67 pushing up the valve body portion 72a disappears, so that the valve body portion 72a is indicated by a one-point difference line, The valve seat 70 is brought into pressure contact with the spring force of the coil spring 74 and the pressure of the fire extinguishing water. Therefore, since the flow path 69 is closed, the water discharge from the water discharge port 71 is stopped.
In addition, by providing the coil spring 74, the valve member 72 can be reliably pressed against the valve seat 70 to close the flow path 69, but the coil spring 74 can be omitted. Further, it is desirable to provide a 0 ring for sealing on the upper surface of the valve seat 70 as shown in the figure.

  Next, when replacing the sprinkler head SP with a new one, the disk 65 is attached to the upper portion of the head main body 64. Then, when the sprinkler head SP equipped with the disc 65 is screwed to the lower end portion of the connecting cylinder 62, the valve body 72a is pushed up by the rod 67, the flow path 69 is opened, and the valve is opened.

A third embodiment of the present invention will be described with reference to FIG.
The fire extinguishing pipe 80 is continuously connected to the sprinkler head SP via a coupling 82. The coupling 82 includes a female coupling 84 attached to the fire extinguishing pipe and a male coupling 86 attached to the sprinkler head SP.

  The female coupling 84 is formed in a truncated cone shape, and an internal thread portion 87 that is screwed into the pipe 80 is provided on the inner peripheral surface of the upper end portion, and the ball hole 90 that accommodates the ball 88 is provided on the inner peripheral surface of the lower end portion. Is provided. A valve seat 92 is provided on the inner peripheral surface of the central portion of the female coupling 84. A valve body 94 is seated on the valve seat 92, and the valve body portion 94 is biased in the valve closing direction by a spring 96 as a biasing means.

  A stopper 98 is provided on the inner surface of the upper end of the male coupling 86, and a female screw portion 100 that is screwed into the male screw portion 97 a of the head body 97 is provided on the inner peripheral surface of the lower end portion. A circular ball hole 102 is provided. The male coupling 86 is provided with a valve pushing projection 103 that pushes and pushes the valve element 94 in the opening direction. The projection 103 is urged by the spring 101 and is locked to the stopper 98.

  When the male coupling 86 is pushed in and attached to the female coupling 84, the valve element 94 is pushed up by the valve pushing projection 103 and separated from the valve seat 92, and the valve pushing projection 103 is separated from the stopper 98. Become.

A sprinkler head SP is screwed to the male coupling 86, but the water outlet of the head body 97 is closed by a valve body (not shown), and the valve body is supported by the thermal decomposition mechanism 104.
In the present embodiment, the valve body 94 is an example of a blocking means, and the valve push projection 103 is an example of a releasing means. The coupling 82 constitutes a sprinkler head fixture.

Next, the operation of this embodiment will be described.
When the thermal decomposition mechanism 104 senses heat and decomposes due to the occurrence of a fire, the valve body opens away from the water outlet, so that the fire extinguishing water passes between the valve seat 92 and the valve body 94 and is discharged from the water outlet.

  When the male coupling 86 is removed from the female coupling 84 after the fire is extinguished, the pressure of the valve body 94 by the push-up protrusion 103 is released, so that the valve body 94 is pressed by the spring force of the spring 96 and the pressure of the fire extinguishing water. And pressed against the valve seat 92. Therefore, it will be in a valve-closed state and the discharge from the fire water outlet will stop.

  After the new sprinkler head SP with the thermal decomposition mechanism 104 is screwed to the male coupling 86 and then the male coupling 86 is mounted on the female coupling 84, the valve element 94 is pushed up by the push-up projection 103 and the valve is opened. It becomes.

A fourth embodiment of the present invention will be described with reference to FIG.
The pipe 110 is provided with an electric valve 112 (or electromagnetic valve) as a control valve, and a socket 114 is provided at the lower end thereof. The socket 114 is a member for connecting the sprinkler head SP to the pipe 110, and a limit switch 118 is provided on the side thereof. The limit switch 118 is a sensor that detects attachment / detachment of the head main body 116 by the sensor unit 118a.

  The limit switch 118 is connected to the control unit 120, and the control unit 120 controls the motor M of the motor-operated valve 112 based on a detection signal from the limit switch 118.

  A water outlet (not shown) is formed in the head main body 116 of the sprinkler head SP, and the water outlet is sealed by a valve body. This valve body is supported by a thermal decomposition mechanism 122.

Next, the operation of this embodiment will be described.
When the thermal decomposition mechanism 122 senses heat and decomposes due to the occurrence of a fire, the valve body opens away from the water outlet, so the fire extinguishing water is discharged from the water outlet.
In the present embodiment, the electric valve 112 is an example of a shut-off means, and the limit switch 118 and the control unit 120 are examples of a release means. Further, the socket 114 constitutes a sprinkler head fixture.

  After the fire is extinguished, when the head body 116 is rotated in a predetermined direction and removed from the socket 114, the sensor unit 118a detects that, and the limit switch 118 sends a removal signal to the control unit 120. M is rotated and the motor-operated valve 112 is closed. Therefore, the water discharge from the water discharge port is stopped.

  When a new sprinkler head SP is mounted on the connector 114, the sensor unit 118a of the limit switch 118 is activated and sends a mounting signal to the control unit 120. The control unit 120 rotates the motor M to open the motor-operated valve 112.

  In the above explanation, the sprinkler head was replaced with a new one after the fire was extinguished. However, even when replacing the old sprinkler head that is not operating with the new sprinkler head, water does not flow out from the piping. Exchange work can be performed.

1 is a longitudinal sectional view showing a first embodiment of the present invention. It is a top view which shows a disc. It is a longitudinal cross-sectional view which shows 2nd Example of this invention. It is a partial longitudinal cross-sectional view which shows 3rd Example of this invention. It is a front view which shows 4th Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fire extinguishing pipe 3 One-touch coupling 5 Sprinkler head 7 Receiving joint 9 Small cylinder 12 Through-hole 16 Large cylinder 40 Disc 45 Rod 50 Seal ball 54 Water outlet

Claims (7)

In sprinkler heads connected to pipes filled with fire-extinguishing water;
A blocking means provided in a flow path in the pipe, and a release means connected to the sprinkler head and releasing the blocking means from the flow path.
The sprinkler head mounting tool, wherein when the sprinkler head is removed from the pipe, the blocking means closes the flow path.   The blocking means is a seal ball, and the release means includes a disk provided with a fire-extinguishing water passage hole, and a rod provided at the center of the upper surface of the disk to push up the seal ball. 2. The sprinkler head fixture according to claim 1.   The sprinkler head fixture according to claim 1 or 2, wherein the sprinkler head is connected to a one-touch joint that can be connected to the pipe with a single touch. In a sprinkler head connected to a pipe filled with fire-extinguishing water via a connecting cylinder;
In the connection cylinder, a valve seat and a valve member disposed on the piping side of the valve seat are provided,
A sprinkler head is detachably provided on the connection tube,
A sprinkler head mounting tool, wherein the sprinkler head is provided with a rod for pushing up the valve member in the valve opening direction. In sprinkler heads connected via a coupling to piping filled with fire-extinguishing water;
The coupling consists of a female coupling attached to the pipe and a male coupling attached to the sprinkler head,
The female coupling is provided with a valve seat, a valve body seated on the valve seat, and an urging means for urging the valve body in a valve closing direction,
The sprinkler head mounting tool, wherein the male coupling is provided with a valve pushing projection for pressing the valve body in the opening direction. In sprinkler heads attached via sockets to piping filled with fire water;
The piping is provided with a control valve,
The socket is provided with a sensor for detecting attachment / detachment of the sprinkler head,
The sprinkler head fixture, wherein the sensor is connected to a control unit for operating the control valve.   The sprinkler head fixture according to claim 6, wherein when the sensor detects that the sprinkler head is removed from the socket, the control unit closes the control valve.

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