JP6144800B2 - Flowing water detector - Google Patents

Description

  The present invention relates to a running water detection device installed on fire extinguishing equipment piping.

  The flowing water detection device is a device installed on a fire extinguishing equipment pipe such as a sprinkler equipment or a foam fire extinguishing equipment, and detects a running water in the pipe and outputs a signal.

  The inside of the water flow detection device has a check valve structure, and the valve is divided into a primary side chamber and a secondary side chamber by the valve, and the valve body is always closed. The primary side chamber and the secondary side chamber are always filled with water, and piping connected to the primary side chamber (hereinafter referred to as “primary side piping”) is connected to a water source, and piping connected to the secondary side chamber (hereinafter referred to as “ "Secondary side piping" is equipped with a spray head such as a sprinkler head or foam head.

  The water flow detector is installed to detect the operation of the spray head installed in the secondary pipe. For example, when the sprinkler head is activated, the water filled in the secondary pipe is discharged from the sprinkler head. As a result, the pressure in the secondary side pipe is reduced. As a result, the pressure in the secondary chamber of the flowing water detector also decreases, the balance of the force due to the pressure acting on the valve body is lost, and the force acting on the valve body from the primary side chamber side is reduced from the secondary side chamber side to the valve body. The force acting on the valve is exceeded and the valve body is opened.

  When the opening of the valve body is detected, the switch device operates to output a signal. The switch device is electrically connected to a monitoring device installed in a management room or the like of the building, and the operation of the switch device is output from the monitoring device to notify the manager or the like that the sprinkler head has been operated.

  In the flowing water detection device shown in Patent Document 1, a rod 52 that contacts a locking portion 51A provided so as to protrude from the peripheral edge of the valve body 51 is inserted from the outside of the valve box 53 as shown in FIG. When the valve body 51 is opened by the shaft 54, the end on the side locked by the valve body 51 is pivotally supported so as to be rotatable in the secondary side II direction. However, when the valve is closed, the locking portion 51A prevents the turning operation.

  On the other hand, a limit switch 55 is disposed in the vicinity of the rod end 52B on the outside of the valve box 53, and the end of the rod 52 that is in contact with the locking portion 51A by opening the valve body 51 is in the secondary II direction. The other end side 52B is turned to the limit switch 55 side and the limit switch 55 is operated.

  In the vicinity of the limit switch 55, a timer device 56 that delays the time from the rotation of the rod 52 until the limit switch 55 is activated is installed. The timer device 56 prevents the limit switch 55 from operating when the valve body 51 is instantaneously opened due to vibration of water in the pipe. The delay time is set to several seconds to 1 minute.

  The timer device 56 is provided with a push rod 57 for operating the limit switch 55, and the push rod 57 is urged toward the limit switch 55 by an unillustrated bullet. However, the push rod 57 is always locked by the rod end 52B and is prevented from moving in the direction of the limit switch 55.

  The push rod 57 is configured so that the moving operation in the direction of the limit switch 55 becomes slow by the action of a damper (not shown) in the timer device 56. Accordingly, when the valve body 51 is opened, the rod 52 is rotated to disengage the rod end 52B from the push rod 57, and the push rod 57 moves slowly in the direction of the limit switch 55 to operate the limit switch 55 for several seconds to 1 minute. It takes a certain amount of time.

Further, Patent Document 2 describes a running water detection device in which a similar timer device is installed.

JP 2009-136432 A JP 2005-292331 A

  In the flowing water detection device of Patent Document 2, a lever 58 installed between the push rod 57 and the limit switch 55 engages the push rod 57 as shown in FIG. When the lever 58 is moved to the limit switch 55 side and the engagement between the push rod 57 and the lever 58 is released, the push rod 57 slowly moves to the limit switch 55 side to operate the limit switch 55. In the flowing water detection device of Patent Document 2, the delay time of the timer device can be confirmed by measuring the time from when the lever 58 is moved to release the engagement between the push rod 57 and the lever 58 until the limit switch 55 is activated. there were. However, in the flowing water detection device of Patent Document 1, since the rod 52 is locked to the locking portion 51A of the valve body 51, the rod 52 must be rotated in the valve opening direction.

  A load generated by a pressure difference between the secondary side II and the primary side I of the valve box 53 is acting on the valve body 51. In order to rotate the valve body 51, the weight of the valve body 51 on the rod 52 and the aforementioned weight are applied. It is necessary to apply a moment more than the load, and the rod 52 may be damaged or deformed when the load is applied to the rod 52 protruding from the valve box 53 to rotate the valve body 51 in the opening direction.

Therefore, in the present invention, a cylindrical main body, a valve body with a check valve structure provided inside the main body, a switch that detects flowing water due to the rotation of the valve body and outputs a predetermined signal, and one end side of the valve body An object of the present invention is to enable a limit switch to be operated regardless of a rod in a flowing water detection device including a rod that is locked and that transmits the rotation of a valve body as a displacement to the switch side.

  In order to achieve the above object, the present invention detects a predetermined signal by detecting a cylindrical main body connected to a fire extinguishing equipment piping, a valve body having a check valve structure provided in the main body, and flowing water caused by the rotation of the valve body. A switch that outputs rotation of the valve body to the switch side as a displacement, a contact that is in contact with the rod at one end and the other end that is disposed near the switch, and a contact that is independent of the rod. Provided is a flowing water detection device including a movable part that is movably supported and an urging unit that urges movement of the contact to the switch side. According to the present invention, the rotation of the valve body is transmitted to the contact as a displacement of the rod on the switch side, and the switch can be operated by displacing the other end of the contact from the valve-closed position. And since a movable part supports a contactor so that a movement is independent of a rod, a switch can be operated separately from a rod.

  In the present invention, the urging means urges the valve body in the opening direction. The biasing means may bias the valve body from the primary side in the flowing water direction. The valve body has a disk shape, has a bearing through which the valve rod is inserted, and can rotate around the valve rod. The movable part can be a shaft that rotatably supports the contact.

  Further, another means for achieving the above object is to detect a predetermined amount by detecting a cylindrical main body connected to the fire extinguishing equipment piping, a check valve structure provided inside the main body, and flowing water caused by the rotation of the valve body. And a rod that is in contact with the valve body at one end and that engages a switch operating piece that operates the switch at the other end, and the rod is rotated by turning the valve body in the opening direction. With respect to the water flow detecting device in which the locking of both ends is released and the switch operating piece turns on, the rod is displaced so that the other end side is separated from the switch operating piece in the valve-closed state, and the locking is released. It is characterized by including a movable part.

  According to the present invention, in order to release the engagement between the switch operating piece and the rod by rotating the rod, the end of the rod that is engaged with the valve body is rotated to open the valve body in the opening direction. Although it must be rotated, it is difficult to implement because the rod may be damaged or deformed. Therefore, the rod end protruding to the outside of the valve box can be displaced without moving the end of the rod engaged with the valve body, so that the engagement between the other end of the rod and the switch operating piece can be released. Become.

Specifically, when the rod engaged with the switch operating piece is separated from the switch operating piece, the lock between the other end of the rod and the switch operating piece can be released. However, as described above, the rod is locked to the valve body when the valve is closed, and one end side of the rod cannot be moved. Therefore, it can be realized by adopting a configuration in which the switch operating piece engaged with the other end of the rod is movable in a direction away from the other end of the rod.
The present invention may have the following specific configuration. In other words, the other end of the rod can be configured to have a contact that engages with the switch operating piece in a closed state. The movable portion can be configured as a shaft that pivotally supports the other end side so as to be separated from the switch operating piece in a valve-closed state. The movable portion may be configured as a shaft that is slidably supported so as to separate the other end side from the switch operating piece in a valve-closed state. One spring seat that is displaced together with the contact and the other spring seat fixedly installed facing the displacement direction of the spring seat are provided, and when the contact rotates, one spring seat on the movable side is fixed. The displacement of the contact can be stopped by abutting against the other spring seat on the side.

About the flowing water detection apparatus of this invention, the delay confirmation lever which can be moved to the direction which separates the other end side of a rod and a switch action | operation piece can be provided.
By providing the delay confirmation lever, the release of engagement between the switch operating piece and the other end of the rod can be separated (disengaged) by operating the delay confirmation lever. For example, when the rod and the switch operating piece are installed in a narrow place where the operator's finger cannot enter, work can be done easily by releasing the engagement between the switch operating piece and the rod using the delay confirmation lever. Is possible.

About the flowing water detection apparatus of this invention, when making it move to the direction which separates the other end side of a rod and a switch action | operation piece with a delay confirmation lever, the guide part which can regulate a moving direction and distance can be provided.
Ensure the operation to release the lock between the other end of the rod and the switch operating piece, and prevent interference with other parts when the other end of the rod or the position of the switch operating piece is moved. In order to achieve this, a guide unit that can regulate the movement direction and distance of the delay confirmation lever is installed to limit the movement direction and distance of the position of the rod or switch operating piece. The movement direction / distance can be regulated by inserting a delay confirmation lever through a guide portion formed on a bracket covering the timer device.
In addition to the above, if a display indicating the operation direction of the delay confirmation lever and the holding position at the time of confirming the delay time of the timer device is provided, even an unskilled worker can easily work.

About the flowing water detection apparatus of this invention, a contact can be provided in the other end side of a rod, and this contact can be operated in the direction away from a switch action | operation piece.
According to this, the latch of the switch operating piece can be released without moving the rod itself by a contact operably provided on the other end side of the rod. The contact may be provided rotatably on the other end of the rod, or may be provided so as to be slidable. Alternatively, the contactor may be made of an elastic material and deformed when the engagement with the switch operating piece is released, and after confirmation of the delay time of the timer device, the original shape can be restored by its own elasticity. it can.

About the flowing water detection apparatus of this invention, the contactor is set to the predetermined position by the 1st biasing means.
Normally, the contact is set at a position to lock the switch operating piece, but when checking the delay time of the timer device by releasing the engagement between the rod and the switch operating piece, check the contact with the finger or delay When the lever is held in a state of being moved away from the switch operating piece and the delay time of the timer device is confirmed, when the holding of the contact is released, the contact is returned to the original position by the first biasing means. it can. As a result, a resetting operation for returning the position of the contact to the original position is unnecessary, and forgetting to return can be prevented. As a specific example of the first urging means, it is possible to use a magnetic force generated by an elastic body such as rubber or a spring, a weight, or a magnet.

About the flowing water detection apparatus of this invention, a notch can be formed in the switch operating piece in the direction in which the contact operates.
When the contact moves in a direction away from the switch operating piece, the contact can be prevented from being caught by the switch operating piece or hindering the operation of the contact. Further, a guide such as a taper portion or chamfering can be provided on the edge of the notch in order to prevent the contact from being caught by the switch operating piece when returning to the original position.

According to the present invention, the switch can be operated separately from the rod.

Sectional drawing of the flowing water detection apparatus of 1st Embodiment X1-X1 cross section Front view with the housing lid removed Drawing without bracket on the front side in FIG. Perspective view of the configuration near the contact Left side view of FIG. 4 (timer device not shown) Drawing of the state which is confirming the delay time of the timer device in FIG. Illustration of another embodiment of the contact The front view of the state which removed the cover of the housing | casing in the flowing water detection apparatus of 2nd Embodiment. Left side view of FIG. Drawing of the state which is confirming the delay time of the timer device in FIG. Sectional view of a conventional water flow detector Explanatory drawing of the flowing water detection apparatus in which the timer apparatus similar to FIG. 12 is installed

1st Embodiment (FIGS. 1-8)
A first embodiment of the present invention will be described below with reference to FIGS.

  The flowing water detection device according to the first embodiment includes a main body 1, a housing 2, and a drain valve 3.

  The main body 1 has a hollow shape and is divided into a primary side chamber I and a secondary side chamber II by a partition wall 4. A communication hole 5 is formed in the partition wall 4, and an annular valve seat 6 is installed on the secondary side chamber II side of the communication hole 5.

  A valve body 7 is seated on the valve seat 6, and a cylindrical bearing 8 is formed on a part of the periphery of the valve body 7, and a valve stem 9 passes through the bearing 8 and is installed in the main body 1. Has been. The valve body 7 is configured to be rotatable in the secondary side II direction with the valve rod 9 as an axis. When the valve body 7 is rotated, the valve body 7 is separated from the valve seat 6 and the fluid in the primary side chamber I is annular. It is possible to pass through the valve seat 6 to the secondary side chamber II.

  On the periphery of the valve body 7 is provided a protruding portion 10 that protrudes from the edge. The end 11A of the rod 11 is in contact with the surface of the protrusion 10 on the valve seat 6 side, the rod 11 is pivotally supported in the middle, and the rod 11 is configured to be able to rotate up and down in the drawing. .

  An end 11 </ b> B opposite to the end in contact with the valve body 7 of the rod 11 protrudes outside the side surface of the main body 1 and is covered with the housing 2. As shown in FIGS. 3 to 5, a spring seat 12 is provided at the end 11 </ b> B so as to protrude upward in the drawing. The spring seat 12 has a columnar shape, and a step portion 12A having an intermediate portion larger in diameter than both ends is formed. The upper surface in the drawing serves as a seat portion of a coil spring 14 to be described later, and the end 12B on the seat portion side is connected to the coil spring 14. It is inserted. An end 12C below the stepped portion 12A is inserted into a hole 11C formed in the end 11B of the rod 11. The end 12C and the hole 11C are loosely fitted.

  On the extension of the shaft of the spring seat 12, a spring seat 13 installed on the base B is provided. One end of the spring seat 13 is engraved with a male screw 13A and is screwed into the female screw of the base B. A column portion 13B having a smaller diameter than the male screw 13A is formed on the other end side, and a step between the male screw 13A and the column portion 13B is used as a seat portion of the coil spring 14. By rotating the male screw 13A, the position of the end of the column portion 13B can be adjusted in the vertical direction in the figure.

  A coil spring 14 is provided between the spring seats 12 and 13 as a first urging means. The end 11B of the rod 11 is always biased downward in the figure by the coil spring 14. The end 11A opposite to the end 11B is biased upward in the figure, that is, in the direction in which the valve body 7 opens, by the intermediate shaft of the rod 11, but the force acting on the coil spring 14 is weak enough not to open the valve body 7 It is.

  A contact 16 that contacts the switch operating piece 15 is fixedly installed at the end 11B of the rod 11. The contact 16 shown in FIGS. 4 and 5 is formed with a curved portion 16A in which an end contacting the switch operating piece 15 is bent into a curved shape. The other end of the contact 16 has an inverted U-shaped cross section, and is provided with two side portions 16B formed by bending. The end 11B of the rod 11 is inserted into the side surface portion 16B. A shaft 16C as a “movable portion” is installed through the two side surface portions 16B and the rod 11, and the contact 16 is pivotally supported by the shaft 16C. The side surface portion 16B has an extended portion 16D extending to the opposite side of the curved portion 16A. The upper part of the extension part 16D is in contact with the lower surface of the step part 12A of the spring seat 12, and the extension part 16D is urged downward by the coil spring 14 as the first urging means. At the same time, the curved portion 16A opposite to the expansion portion 16D is urged upward where the switch operating piece 15 is installed, and comes into contact with the switch operating piece 15.

  A timer device 18 is installed in the direction in which the bending portion 16A of the contact 16 urges the switch operating piece 15. The timer device 18 has a function of delaying the operation of the switch operating piece 15, and a structure using an air damper or an oil damper is used. Detailed description of the internal structure of the timer device 18 is omitted. The dial 18A of the timer device 18 is provided with a scale (denoted) such as a scale indicating the delay time or a display (not shown) so that the delay time can be adjusted.

  The switch actuating piece 15 is urged by a bullet body 15A in the direction of the limit switch 17 and is prevented from moving in the direction of the limit switch 17 by the contact 16.

  The switch operating piece 15, the projectile 15 </ b> A, the limit switch 17, and the timer device 18 are disposed at predetermined positions in a U-shaped case 19 by screws 19 </ b> A or fitting. The case 19 has an opening 19B through which the contact 16 can be inserted.

  The cover 19 is covered with a bracket 20 for fixing and installing the cover 19 on the base B. The bracket 20 is formed by bending a plate material, and its end is fixed to the base B by screws 20A shown in FIG. The bracket 20 and the cover 19 are positioned and installed by the aforementioned screw 19A.

  An inverted L-shaped hole 20C is formed in the front surface 20B of the bracket 20 shown in FIG. 3, and a delay confirmation lever 21 is inserted through the hole 20C. In addition, a long hole 20D is formed in the front surface 20B, and the operating state of the limit switch 17 disposed in the back of the long hole 20D can be visually confirmed.

  As shown in FIG. 6, the delay confirmation lever 21 has a long and narrow plate shape, and a hole (not shown) is formed at one end. A hole on one end side of the delay check lever 21 is inserted into a shaft J on a support surface 20E formed by bending a back surface provided to face the front surface 20B of the bracket 20, and is rotatably supported.

A spring locking portion 21A is provided at an intermediate portion of the delay confirmation lever 21, and a hole 21B is formed in the spring locking portion 21A. One end of the tension spring 22 is locked in the hole 21B. The other end side of the tension spring 22 is locked to a flange portion 20F provided on the upper surface of the bracket 20. The delay confirmation lever 21 is urged upward in the figure by the action of the tension spring 22.

  Further, a bulging portion 21 </ b> C is formed at a position close to the contact 16 in the intermediate portion of the delay confirmation lever 21.

  The other end of the delay confirmation lever 21 protrudes outside the bracket 20, and an operation portion 21 </ b> D that can be operated by being picked with a finger by an operator is formed. The delay confirmation lever 21 is urged upward by the tension spring 22 described above, and is always in a state of being positioned above the hole 20C.

  As shown by the two-dot chain line in FIG. 6, when the delay confirmation lever 21 is moved downward along the vertical hole portion of the hole 20C, the delay confirmation lever 21 is swung about the axis J provided on the support surface 20E and bulges. The part 21 </ b> C presses the contact 16. Then, as shown in FIG. 7, the contact 16 rotates about the shaft 16C, and the bending portion 16A moves to the limit switch 17 side.

  3 and 4, the hole 20C guides the movement direction of the delay confirmation lever 21. As shown in FIG. Further, even when the delay time of the timer device 18 is confirmed, the delay confirmation lever 21 cannot be moved to the B1 side of the base B or the cover 19 side by the vertical hole portion of the hole 20C. Accordingly, the delay confirmation lever 21 can press only a predetermined position of the contact 16.

  Further, if an indication indicating the operation direction of the delay confirmation lever 21 or the holding position of the delay confirmation lever 21 when confirming the delay time of the timer device 18 is provided near the hole 20C of the bracket 20, the delay time confirmation work of the timer device 18 is performed. Even an unfamiliar worker can easily and accurately perform work.

  The base B of the housing 2 has a shape in which a flat plate is bent in an L shape, and is bent from the surface B1 as a “first surface” through which the rod 11 passes and is connected to the main body 1, and from the surface B1. The surface B2 is provided as a “second surface”. The end of the bracket 20 that supports the cover 19 on which the limit switch 17 and the timer device 18 are installed is connected to the surface B1. A hole 24 is formed in the surface B2 for connecting the lead wire following the external monitoring device to the terminal block 23 that is electrically connected to the limit switch 17 in the housing 2. The base B is covered with a lid C, and protects the devices installed inside from dust and dirt.

  The drain valve 3 is a valve that discharges the fluid in the main body 1 to the outside during inspection and maintenance, and is installed on the surface opposite to the housing 2. The inside of the drain valve 3 has an angle valve structure, and the discharge port is provided downward in FIG. The handle for opening and closing the drain valve 3 is installed on the front side where the cover 1A of the flowing water detection device A is provided, and is provided at a position where the handle can be easily operated.

  Then, operation | movement of the flowing water detection apparatus of 1st Embodiment is demonstrated.

  The flowing water detection device of the first embodiment is installed in a fire extinguishing equipment pipe, the primary side chamber I is connected to a pump (not shown) and a pipe leading to a water source, and the sprinkler head (not shown) is connected to the end of the pipe connected to the secondary side chamber II. Is installed.

  The fire extinguishing equipment piping is filled with water, and the inside of the main body 1 of the water flow detector is also filled with the primary side chamber I and the secondary side chamber II. At all times, the valve body 7 is seated on the valve seat 6 and water flow from the primary side chamber I to the secondary side chamber II is blocked.

  When a fire occurs and the sprinkler head installed in the pipe on the secondary side chamber II side operates, the water in the pipe on the secondary side chamber II side is discharged from the sprinkler head and gradually decreases in pressure. When the pressure of the water in the secondary side chamber II that has closed the valve body 7 decreases and becomes lower than the pressure in the primary side chamber I, the valve body 7 is pushed up by the pressure difference between the secondary side chamber II and the primary side chamber I, and the shaft 9 is Rotates to a fulcrum.

  Since the valve body 7 is opened away from the valve seat 6, the water in the primary side chamber I is sent to the secondary side chamber II side. At the same time, the rod 11 that has been in contact with the valve body 7 is also rotated by the urging force of the coil spring 14, and the end 11B on the housing 2 side moves downward.

  As a result, the contact 16 at the end 11B is separated from the switch operating piece 15, and the switch operating piece 15 starts moving toward the limit switch 17 side. The switch operating piece 15 activates the limit switch 17 after a predetermined time has elapsed by the timer device 18. The limit switch 17 is connected to a monitoring device (not shown) provided in an administrator room or the like via a terminal block 29, and the operation of the limit switch 17 is output to the monitoring device.

  The above-described pump is activated by a signal generated by the operation of the limit switch 17, the water supply starts from the water source to the sprinkler head, and water is continuously sprayed from the sprinkler head to stop the fire.

  Next, a procedure for confirming the delay time of the timer device in the flowing water detection device of the first embodiment will be described.

  First, when the lid C is removed from the housing 2, the delay confirmation lever 21 appears on the front as shown in FIG. After confirming the delay time displayed on the dial 18A of the timer device 18, the delay confirmation lever 21 is moved downward and held at the lower end of the hole 20C, and the measurement of the delay time is started with a stopwatch or the like.

  By the movement of the delay confirmation lever 21, the bulging portion 21C presses the contact 16 downward, and the contact 16 rotates about the shaft 16C (see FIG. 7). The curved portion 16A of the contact 16 is separated from the switch operating piece 15, and the switch operating piece 15 is moved to the limit switch 17 side by the elastic body 15A.

  On the other hand, the extension 16D of the contact 16 rotates upward against the urging force of the coil spring 14. At this time, if the contact 16 is rotated more than necessary, the ends of the spring seats 12 and 13 (end 12B and column 13B) are brought into contact with each other and cannot be rotated any further. 16 is prevented from rotating more than necessary.

  The operation of the switch operating piece 15 is slowed down by the timer device 18 and slowly moves to the limit switch 17 side. When the switch operating piece 15 pushes the button 17A of the limit switch 17, a “click” sound is made and the limit switch 17 is activated. At this time, the stopwatch is stopped and the measurement of the delay time is finished.

  The time elapsed from the movement of the delay confirmation lever 21 to the operation of the limit switch 17 is the delay time of the timer device, and it is confirmed whether the measured time matches the time indicated on the dial 18A.

  After the delay time is measured, when the holding state of the delay confirmation lever 21 is released, the delay confirmation lever 21 returns to its original position (above the hole 20C) by the action of the tension spring 22. At the same time, the contact 16 also returns to the original state shown in FIG. 4 because the coil spring 14 urges the extended portion 16D downward through the step portion 12A.

  In the first embodiment described above, the contact 16 is rotatably supported by the shaft 16 </ b> C as a “movable part” and can be moved in the vertical direction by a rotating operation. As a modification, as shown in FIG. 8 (a1): always, (a2): delay time confirmation, the shaft 16C of the contact 16 is slid up and down along the slit a provided in the side surface portion 16B. As shown in the configuration, (b1): Always, (b2): When confirming the delay time, the shaft 16C is slid in the horizontal direction along the long hole b formed in the side surface portion 16B. Is also possible. Further, as shown in (c1): Always, (c2): When confirming the delay time, the contact 16 may be rotated by installing the shaft 16C of the first embodiment at a position rotated by 90 ° as shown in FIG. Is possible.

  In the above modification, the switch operating piece 15 is not shown, but the switch operating piece 15 is notched in the moving direction of the contact 16 so that the operation of the contact 16 is not hindered. Further, if the edge portion of the notch is chamfered or tapered, the contact 16 can smoothly move without being caught by the switch operating piece 15 when the contact 16 returns to the original position.

Second Embodiment (FIGS. 9 to 11)
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS.

  In the second embodiment, parts having the same configurations as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The structure of the main body 1 portion of the flowing water detection device in the second embodiment is the same. FIG. 9 shows a front view of the housing 2 with the lid removed.

  As in the first embodiment, the bracket 30 accommodates the cover 19 and the switch operating piece 15, the limit switch 17, the timer device 18 and the like incorporated in the cover 19. A long hole 20D similar to that of the first embodiment is formed on the front side of the bracket 30 shown in FIG. 9, and the state of the limit switch 17 inside the bracket 30 can be confirmed when the delay time of the timer device 18 is confirmed. is there.

  A rectangular opening 30A is formed obliquely below the elongated hole 20D. A delay confirmation lever 31 is inserted into the opening 30 </ b> A. One end of the delay confirmation lever 31 is disposed on the cover 19, and the delay confirmation lever 31 is fixed to the cover 19 by a screw 19 </ b> A that fixes the cover 19 and the limit switch 17. is set up.

  A bowl-shaped hole 30B is formed above the long hole 20D. A projection 19C formed on the surface of the cover 19 is inserted into the bowl-shaped hole 30B, and the projection 19C can move upward in the figure along the bowl-shaped hole 30B. At all times, the protrusion 19C is locked to the lower side of the bowl-shaped hole 30B.

  FIG. 10 is a diagram illustrating the left side of FIG. An elongated hole 30 </ b> C through which the screw 19 </ b> A is penetrated is formed on the left side surface of the bracket 30. The screw 19A is always locked to the lower end of the elongated hole 30C, but can move upward in the drawing along the elongated hole 30C.

  A magnet 32 is embedded in the surface of the cover 19 that comes into contact with the left side surface of the bracket 30. The magnet 32 is normally attracted to the metal bracket 30 by a magnetic force, and holds the cover 19 and the bracket 30.

  About the operation | movement of the flowing water detection apparatus of 2nd Embodiment, since it is the same as that of 1st Embodiment, description is abbreviate | omitted. Next, a procedure for confirming the delay time of the timer device in the flowing water detection device of the second embodiment will be described.

  First, when the cover C is removed from the housing 2, the delay confirmation lever 31 appears on the front as shown in FIG. After confirming the delay time displayed on the dial 18 </ b> A of the timer device 18, the delay confirmation lever 31 is moved to the right side, and the magnet 32 installed on the cover 19 is pulled away from the bracket 30. At this time, the protrusion 19C moves to the right along the lateral hole below the bowl-shaped hole 30B.

  Next, the delay confirmation lever 31 is moved upward. The protrusion 19C moves upward along the vertical hole of the hook-shaped portion 30B, and the tip of the screw 19A moves upward along the elongated hole 30C. Immediately after moving, start measuring delay time with a stopwatch. At this time, the cover 19 accommodated in the bracket 30 moves upward with respect to the bracket 30. The switch operating piece 15 installed in the cover 19 is also moved upward with the movement of the cover 19, and the contact 16 is separated from the switch operating piece 15.

  The delay confirmation lever 31 is held at this position until the measurement of the delay time of the timer device 18 is completed. The switch actuating piece 15 slowly moves to the limit switch 17 side. When the switch actuating piece 15 pushes the button 17A of the limit switch 17 and makes a clicking sound, the stopwatch is stopped and the delay time measurement is finished. To do.

In the above, when it is desired to keep the cover 19 moved upward after the start of the delay time measurement, the delay confirmation lever 31 is moved to the left as shown in FIG. Then, the projection 19C moves to the left along the lateral groove on the upper side of the bowl-shaped hole 30B, and the left side surface of the magnet 32 and the bracket 30 is attracted by the magnetic force of the magnet 32, so that the cover 19 is kept in the moved position. It becomes possible to do.

1 body
2 Case
3 Drain valve
4 Bulkhead
5 communication hole
6 Valve seat
7 Disc
8 Bearing
9 Valve stem
10 Protrusion
11 Rod
14 Coil spring (first biasing means)
15 Switch operation piece
15A projectile (second biasing means)
16 Contact
17 Limit switch (switch)
18 Timer device
19 Cover
20, 30 Bracket
21, 31 Delay confirmation lever
22 Tension spring
23 Terminal block
32 Magnet

Claims (5)

A cylindrical body connected to the fire extinguishing equipment piping;
A valve body of a check valve structure provided inside the main body,
A switch that detects flowing water due to the rotation of the valve body and outputs a predetermined signal;
In the flowing water detection device provided with a rod that transmits the rotation of the valve body as a displacement to the switch side,
One end side is in contact with the rod, and the other end side is disposed near the switch,
A movable part that supports the contactor so as to be movable independently of the rod;
An apparatus for detecting water flow, comprising: an urging unit that urges the valve body in an opening direction and urges movement of the contact to the switch side when the valve body opens.
A cylindrical body connected to the fire extinguishing equipment piping;
A valve body of a check valve structure provided inside the main body,
A switch that detects flowing water due to the rotation of the valve body and outputs a predetermined signal;
In the flowing water detection device provided with a rod that transmits the rotation of the valve body as a displacement to the switch side,
One end side is in contact with the rod, and the other end side is disposed near the switch,
A movable part that supports the contactor so as to be movable independently of the rod;
An effluent detection device comprising urging means for urging the valve body from a primary side in a flowing water direction and urging movement of the contact to the switch side by opening the valve body.
The flowing water detection device according to claim 2, wherein the urging means urges the valve body in the opening direction.
The flowing water detection device according to any one of claims 1 to 3, wherein the valve body has a disk shape, has a bearing through which the valve rod is inserted, and rotates around the valve rod.
The flowing water detection device according to claim 1, wherein the movable part is a shaft that rotatably supports the contact.

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