JP5782370B2 - Emergency shut-off valve device - Google Patents

Description

  The present invention relates to an emergency shut-off valve device, and more particularly, to an emergency shut-off valve device disposed in the middle of a water supply pipe in order to prevent leakage from a damaged portion of a water supply passage when an earthquake occurs.

  Water supply pipes that distribute and supply water from water storage tanks installed in apartment buildings such as condominiums, etc. to automatically shut off the water supply passages in the event of an earthquake to prevent leakage from downstream damage points In general, an emergency shut-off valve device is provided.

  Such an emergency shut-off valve device is arranged in the middle of the water supply pipe 2 extending from the water storage tank 1 as shown in FIG. 3, and opens and closes the valve body 31 of the shut-off valve 30B by a predetermined driving means. An emergency shut-off valve device 3B that can be provided is well known. For example, as shown in FIG. 3 described in Japanese Patent Laid-Open No. 2000-356277 and Japanese Patent Laid-Open No. 2008-57561, a separately arranged feeling When the seismic device 4 senses and operates an earthquake of a predetermined level or higher, the drive means of the emergency shut-off valve device 3B is actuated via the link means such as the mechanical conductor 50 to urgently shut off the shut-off valve 30B. It is like that.

  By the way, when the damaged part of the water supply passage is repaired, it is necessary to cancel the shutoff by the shutoff valve and restart the water supply as soon as possible. The drive means of the emergency shutoff valve device is an electric type such as a motor or a solenoid. In general, there is a problem that when a power failure occurs due to an earthquake, the valve opening operation cannot be performed when water flow is resumed.

  On the other hand, there are known valve closing drive means that use the elastic repulsive force of the elastic member or use the weight of the weight to eliminate the need for power supply. In operation, the problem at the time of power failure is the same in that electric drive means such as a motor is used.

  Therefore, in the above-mentioned conventional prior art documents, a method of providing a backup battery for use in the event of a power failure or using a built-in battery without using an external power supply from normal times has been proposed, The water supply can be resumed even in a power outage. On the other hand, since the seismoscope is not automatically reset even if the shut-off valve is opened, the work takes time and effort.

  Also, in condominiums, the piping to each house may be damaged, so it is possible to assume that an emergency shut-off valve device is installed for each route. In such a case, it is inexpensive and requires little maintenance. However, the above-described battery built-in type apparatus has the disadvantages that the cost is high due to the built-in battery and that maintenance work is likely to be required.

JP 2000-356277 A JP 2008-57561 A

  The present invention is intended to solve the above-mentioned problems, and the emergency shut-off valve device can be easily restarted even in the event of a power failure, and has a low introduction cost and a low maintenance effort. The problem is to do.

Therefore, the present invention provides a mechanical drive means for applying a biasing force in the valve closing direction to the valve shaft of the shut-off valve that opens and closes the valve by rotating the valve shaft protruding from the valve body, and the drive Water supply piping comprising brake means for maintaining the shut-off valve open state against the urging force of the means, and brake release means for releasing the brake provided in the brake means and closing the shut-off valve Or an emergency shut-off that is connected to a mechanical shut-off device that is located in another location that detects the shaking of the earthquake and activates the brake release means of the shut-off valve to a mechanical shut-off valve that is placed in the water tank. A device having a valve, when an earthquake occurs, a mechanical shock absorber is activated, and the brake is released by operating the brake release means, and the shutoff valve is closed by the drive means, frettage to shut off the water flow automatically In the shut-off valve device, the brake releasing means releases the brake by the brake means in conjunction with the protruding operation of the protruding portion on the tip side of the mechanical conductor extended from the mechanical seismic device, and The brake by the brake means is returned to the state in which the protruding portion of the mechanical conductor is retracted by manually resetting the mechanical seismic device.

  The shut-off valve drive means includes a drive shaft, a spring that rotationally drives the drive shaft, and a conversion mechanism that converts the rotation of the drive shaft into an opening / closing operation of the shut-off valve. The handle valve connected to the shaft end of the drive shaft or a part of the conversion mechanism is manually operated while the shut-off valve is closed while the shut-off valve is closed. It is preferable that the resetting is completed by rotating the spring by operating the shut-off valve in the valve opening direction while turning back the mainspring and fixing it by the brake means at the valve opening position in the initial state.

  The shut-off valve is preferably a type that opens and closes by a rotating operation of a valve body such as a mechanical butterfly valve or a mechanical ball valve.

  Furthermore, the handle member provides a mechanical emergency shut-off valve device that is a handle that can be attached to and detached from the apparatus main body.

  The handle is mounted by connecting a base end side to one end side of the drive shaft extending to the outside of the apparatus.

  The brake release means releases the brake by the brake means in conjunction with the protruding operation of the protruding portion on the tip side of the mechanical conductor extended from the mechanical seismic device, and is a manual resetting operation. The protrusion can be pushed back.

  Furthermore, a worm gear is provided on the drive shaft, and meshes with a worm wheel gear provided on the end side of the valve shaft extending in a direction perpendicular to the drive shaft from the valve body of the shut-off valve. By operating the shut-off valve, it is possible to ensure a relatively large driving force in the valve closing direction without using a large spring.

  In addition, a plurality of emergency shut-off valve devices can be connected to one mechanical seismic device by using a bifurcated or a plurality of mechanical conductors.

  In this way, the use of the spring as the driving means for performing the valve closing operation in the emergency shut-off valve device enables the cost to be kept lower than that of the electric driving means, and also allows manual operation when restarting the water flow. By adopting a system that returns the mainspring to the initial state while opening the shut-off valve, the introduction cost is greatly reduced compared to the case where a battery is built in, and the effort of resetting and maintenance is reduced. Can do.

  Also, in this emergency shut-off valve device, if the handle member is a handle that can be attached to and detached from the main body of the device, it can be used only when resuming the water flow. It will be easy to avoid. In this case, if the handle is attached by connecting the base end side to one end side of the drive shaft extending to the outside of the device, the mainspring is manually operated. You can hit back directly.

Furthermore, the emergency shutoff valve device described above, as a brake release means, in conjunction with the projecting operation of the projecting portion of the extending been mechanical conduction device distally from the installed machine械式sensitive seismic devices elsewhere If the brake means by the brake means is released, and the protrusion of the mechanical conductor is pushed back by a manual reset operation, the power supply means is not required as a whole. In addition to facilitating reliable operation at the time of a power failure, it is easier to operate if the seismoscope is reset via a mechanical conductor by manually unwinding the mainspring.

  According to the present invention, the spring is used as a driving means for performing the valve closing operation and the spring is turned back to the initial state while the shut-off valve is manually opened when the water flow is resumed. In addition to facilitating restarting, the introduction cost is low, and resetting and maintenance can be reduced.

It is a perspective view of an embodiment about an emergency shut-off valve device in the present invention. It is a cross-sectional view of the main-body part of embodiment shown in FIG. FIG. 10 is a layout view showing a state of arrangement of an emergency shut-off valve device in a conventional example. It is an example of arrangement | positioning of the seismic device and emergency cutoff valve apparatus of embodiment shown in FIG. This is an arrangement example in which two emergency shut-off valve devices are connected for one seismic sensor.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  1 and 2 show an overall perspective view and a cross-sectional view of the main body portion of the emergency shut-off valve device 3A of the present embodiment. This emergency shut-off valve device 3A, like the conventional emergency shut-off valve device 3B shown in FIG. 2, urgently closes the shut-off valve 30A disposed in the middle of the water supply pipe 2 continuing from the water tank 1 when an earthquake occurs. This is a device for preventing water leakage on the downstream side of this, and a mechanical seismic device 4 arranged at a position different from this is extended by detecting an earthquake of a predetermined level or more. The projecting portion 50a on the distal end side of the mechanical conductor 50 made of a release operates the brake release portion 363 to release the brake of the brake portion 36, and the drive portion 35 described later operates to urgently close the shutoff valve 30A. It is supposed to let you.

  In addition, FIG. 4 shows an example of the arrangement of the seismic device 4, the emergency shut-off valve device 3A, and the mechanical conductor 50. In particular, the seismic device 4 is separated from the emergency shut-off valve 3A, For example, it is arranged on the installation floor near the water tank 1. According to the present embodiment, the seismic device 4 and the water tank 1 are arranged independently on the installation floor, so that the seismic vibration can be sensed without being affected by other effects such as pump vibration. have. Moreover, in FIG. 5, as another embodiment, when a plurality of water storage tanks are installed, or when a plurality of water intake pipes are arranged in the water storage tank, a plurality of units are used with one seismic device. The relationship figure of arrangement | positioning of the emergency shut-off valve apparatus which provided the mechanical conductor branched in several so that operation of this emergency shut-off valve was possible was shown. In this embodiment, one seismic device is connected to two emergency shut-off valve devices by a two-way mechanical conductor, but the number of emergency shut-off valve devices and the mechanical conductor The configuration is not limited to this. In these cases, it is possible to operate a plurality of emergency shut-off valve devices with one seismic device 4, which is not only economically advantageous, but also when using a plurality of seismic devices (not shown). Since there is no variation due to the swinging operation, it is easy to cope and maintain in the event of an earthquake, and particularly effective when there are a plurality of pipes in one water tank.

In this embodiment, the seismic device 4 and the emergency shut-off valve 3A are connected to each other inside the emergency shut-off valve 3A by a mechanical conductor 50. The connection structure with the valve is not limited to this, and when the seismic device is activated due to the occurrence of an earthquake, the brake release unit 363 is operated to release the brake of the brake unit 36 and the drive unit 35 is operated. Thus, it is only necessary to have a mechanical structure that enables the shutoff valve 30A to be urgently closed.

  The drive unit 35 that operates the valve element 31 of the shutoff valve 30A in the valve closing direction includes a drive shaft 351 that extends in the lateral direction, a spring 350 that is wound in a circumferential spiral shape at one end thereof, and a drive shaft A worm gear 352 disposed substantially at the center of the shaft 351, and a worm gear which is provided in an umbrella shape on the end side of the valve shaft 32 extending in a direction perpendicular to the drive shaft 351 from the valve body 31 and meshes with the worm gear 352. The shut-off valve 30A is urged in the closing direction with the mainspring 350 being squeezed in the compression direction, and power supply is not required for the closing operation of the shut-off valve 30A. ing.

  The brake part 36 attached to the drive part 35 is connected to a gear 360 composed of a plurality of gears partially meshed with a gear 354 provided on the drive shaft 351, and is connected to the gear 360 via a wheel shaft 361a to exert inertial force. And a brake mechanism 362 for stopping the rotation of the flywheel 361 and the wheel shaft 361a by a frictional force such as a brake lining and a brake armor chair, and resists the urging force of the mainspring 350 by the brake action during normal water flow. Thus, the rotation of the drive shaft 351 is stopped to maintain the shut-off valve 30A in the open state.

  When the seismic device 4 detects an earthquake of a predetermined level or higher, for example, when the hard ball disposed inside moves, the latching claw is released and the spring is operated, etc. The protruding portion 50a on the distal end side of the mechanical conductor 50 pushes the release lever 363a of the brake releasing portion 363 attached to the brake mechanism 362, for example, by causing the inserted wire to protrude, thereby releasing the brake by the brake mechanism 362. The urging force of the mainspring 350 is released, and the drive unit 35 operates the shutoff valve 30A in the valve closing direction.

  The worm gear 352 meshes with the worm wheel gear 353 on the end side of the valve shaft 32 in this way to convert the rotation of the drive shaft 351 into the opening / closing operation of the valve body 31, so that one end of the drive shaft 351 is provided. Even if the mainspring 350 provided on the valve body is relatively small and has a low output, a relatively large torque can be generated in the valve shaft 32, so that the valve closing operation of the shutoff valve 30A can be performed smoothly. Yes.

  On the other hand, the distal end portion 351a is exposed to the outside of the main body on the other end side of the drive shaft 351, and the distal end portion 351a has a shape in which a part of the outer peripheral surface is notched in the axial direction. On the other hand, a crank-shaped handle 38 whose arm is oriented at a right angle is connected to the drive shaft 351 by fitting the distal end portion 351a into the engagement hole 38a on the base end side.

  Accordingly, when water flow is resumed after the shutoff valve 30A is closed due to an earthquake, the reset button (not shown) is operated by first operating the reset button of the seismic sensor 4, and the tubular body of the mechanical conductor 50. By pulling back the wire that has been inserted, the protrusion 50a on the distal end side of the mechanical conductor 50 is retracted from the release lever 363a of the brake release portion 363, and the handle 38 is released with the brake mechanism 362 restored. By installing it on the drive shaft 351 and turning it manually, the mainspring 350 can be rewound while turning it in the valve opening direction, and it is reset to the initial state with a simple and low-cost configuration without the need for power supply means. Is possible.

  Further, since the handle 38 is detachable from the drive shaft 351, it is possible to avoid a situation in which the shutoff valve 30 operates unnecessarily by removing the handle 38 when not in use.

  Further, in the reset operation, first, the shock absorber 4 is reset so that the protruding portion 50a on the front end side of the mechanical conductor 50 is retracted from the release lever 363a of the brake release portion 363. The case where the handle 38 is attached to the drive shaft 351 and manually rotated while the state is restored is shown. For example, a mechanism that can be automatically reset by pushing the reset mechanism of the seismic device 4 back to the mechanical conductor If this is done (not shown), the release lever 363a of the brake release portion 363 pushes back the protruding portion 50a protruding on the distal end side of the mechanical conductor 50 by the steering operation at the time of restarting the water flow described above. The mechanical seismic device 4 can also be reset to the normal state.

  In this way, when the water flow is resumed after being cut off urgently due to an earthquake, the mainspring 350 can be rewound and reset while the shut-off valve 30A is returned to the open position by an extremely simple procedure. Even if a plurality of such emergency shut-off valve devices 3A are provided for each house of the apartment house, the restoration work can be completed in a relatively short time.

  Furthermore, since it is a manual type that does not use a battery as a power source for resuming water flow, it is relatively inexpensive as a single device, and the introduction cost can be kept relatively low even if the number of installations is large, and Since a work such as a periodic voltage check as in a battery built-in device is not required, the maintenance work is relatively small.

  As described above, the emergency shut-off valve device according to the present invention can easily restart the water flow even in the event of a power failure, and the introduction cost is low and the labor for resetting and maintenance can be reduced.

  In this embodiment, the handle 38 has a crank shape and is easy to operate. However, the handle 38 is not particularly limited and may be a flat shape (not shown). In this case, the handle 38 is stored in a small space. There is an advantage that you can.

  In this embodiment, a mechanical butterfly valve is used. However, a ball valve having a mechanical shut-off valve structure that opens and closes by rotating the valve body other than the butterfly valve is used. Can also be implemented.

  2 Water supply piping, 3A emergency shutoff valve device, 4 seismic detector, 30A shutoff valve, 31 valve body, 35 drive part, 36 brake part, 38 handle, 50 mechanical conductor, 50a protruding part, 350 spring, 351 drive shaft , 352 worm gear, 353 worm wheel gear, 363 brake release part, 363a release lever

Claims (7)

  A mechanical drive means for applying a biasing force in the valve closing direction to the valve shaft of the shut-off valve that opens and closes the valve by rotating the valve shaft protruding from the valve body, and resists the biasing force of the drive means The brake means for maintaining the open state of the shut-off valve and the brake release means for releasing the brake provided in the brake means and closing the shut-off valve are arranged in a water supply pipe or water storage tank. This is a device having an emergency shut-off valve connected to a mechanical shut-off valve by a mechanical conduction device, which is connected to a mechanical seismic device arranged at another location for detecting the shaking of the earthquake and operating the brake release means of the shut-off valve. When the earthquake occurs, a mechanical seismic device is activated, and the brake is released by operating the brake releasing means, and the shutoff valve is closed by the driving means to automatically pass water. Emergency shut-off valve device that shuts off The brake releasing means releases the brake by the brake means in conjunction with the protruding operation of the protruding portion on the tip side of the mechanical conductor extended from the mechanical seismic instrument, and manually An emergency shut-off valve device for returning a brake by the brake means in a state in which a projecting portion of the mechanical conductor is retracted by resetting a seismic device.   The shut-off valve drive means has a drive shaft, a spring that rotationally drives the drive shaft, and a conversion mechanism that converts the rotation of the drive shaft into an opening / closing operation of the shut-off valve, and the spring in the compression direction. The shut-off valve is urged in the closing direction while being turned, and the handle member connected to the shaft end of the drive shaft or a part of the conversion mechanism is manually turned with the shut-off valve closed. Accordingly, the shut-off valve is operated in the valve opening direction while the spring is rolled back, and the reset is completed by being fixed by the brake means at the valve opening position in the initial state. Emergency shut-off valve device.   The emergency shut-off valve device according to claim 1 or 2, wherein the shut-off valve is a mechanical butterfly valve or a mechanical ball valve. The emergency shut-off valve device according to claim 2 , wherein the handle member is a handle that can be attached to and detached from the apparatus main body. The emergency shut-off valve device according to claim 4 , wherein the handle is attached by connecting a base end side to one end side of the drive shaft extending to the outside of the device.   The drive shaft is provided with a worm gear, and meshes with a worm wheel gear provided on an end portion side of the valve shaft extending in a direction perpendicular to the drive shaft from the valve body of the shut-off valve. The emergency shut-off valve device according to claim 1, 2, 3, 4 or 5. The emergency shut-off valve device according to claim 1, 2, 3, 4, 5 or 6, wherein a plurality of emergency shut-off valve devices can be connected to one mechanical seismic device.

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