JP2004300895A - Flash gate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flash gate for carrying out flush-wash by bringing a valve body down automatically and surely, and for raising and restoring the valve body automatically and quickly after the flush-wash by a simple structure eliminating a winding mechanism which needs power. <P>SOLUTION: The flash gate 1 comprises the valve body 2, a maintaining/releasing mechanism 3 of its erected water-stop state, and an erected water-stop state restoring means 4. The valve body 2 is pivoted to the bottom part of a water passage 5 to be freely raised and brought down, and is provided with a hollow part 20, into which the water of the water passage 5 flows in a process of the erected water-stop state to the brought-down state, and from which the water flows out in the brought-down state. The maintaining/releasing mechanism 3 maintains the erected water-stop state of the valve body 2 until a water level rises to a level to carry out a flush, and releases the maintenance of the erected water-stop state when the water level rises to the level to carry out the flush to allow the valve body 2 to incline in a falling direction of the valve body 2. The restoring means 4 works to raise the fallen valve body 2. The flash gate 1 is structured so that a erected water stop condition restoring means 4 may be generated on the valve body 2 by a start of inclination in a direction of falling. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
FIELD OF THE INVENTION
The present invention relates to a flash gate suitable for flush cleaning of rivers, sewage drains, irrigation canals, and the like, and more particularly to a flash gate capable of automatically performing flush cleaning without the need for human power or electric motors.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a flash gate for periodically flush-cleaning a river, a sewage drain, an irrigation channel, and the like (for example, see Patent Document 1).
[0003]
As shown in FIG. 15, the flash gate includes a stand-up / overturnable weir plate 52 having a base 50 pivotally connected to the bottom of a water channel 51, and a hoisting device 53 installed on a dike. The weir plate 52 supported in the standing water stop state by the device 53 is overturned by the rise of the water level of the water channel 51 by a certain level or more, and the flush cleaning is performed, and the water level of the water channel 51 is increased to a predetermined rising water level by the flush cleaning. When it is lowered, the hoisting device 53 is activated and the weir plate 52 is erected again. The weir plate 52 is provided with a water tank 54 into which the water in the water channel 51 flows. An upward opening 56 having an area equal to or greater than the cross-sectional area of the water tank 54 is formed, and the back plate 55 serving as the bottom surface of the water tank 54 when the weir plate 52 falls over is inclined such that the opening 56 is lowered. surface And those having a structure formed.
[0004]
According to this flash gate, the water in the upstream water passage 51 gradually flows down over the weir plate 52 which is always in the standing water stop state. This water flows into the water tank 54 and is stored inside the water tank 54, so that the weight of the weir plate 52 is increased. When the water level of the water channel 51 reaches a predetermined water level in this state, the weir plate 52 automatically falls over, and the water stored in the upstream water channel 51 is discharged, and flush cleaning is performed. When the weir plate 52 falls, the water stored in the water tank 54 flows out, and the weight of the weir plate 52 is reduced. When the water level in the water channel 51 drops to a predetermined level, the hoisting device 53 is activated, and the weir plate 52 is erected again via the weir plate support wire 57.
[0005]
[Patent Document 1]
JP 2001-131945 A
[0006]
[Problems to be solved by the invention]
However, in the above-mentioned conventional flash gate, a hoisting device 53 and a weir plate supporting wire 57 for raising the overturned weir plate 52 again are separately required. For this reason, the number of parts is increased, the structure becomes more complicated, and there are drawbacks such that installation in a place where power supply facilities are not maintained is restricted.
[0007]
The present invention has been made in view of such circumstances, and has a simple structure in which a hoisting device that requires power such as human power or an electric motor is omitted, thereby automatically and reliably overturning a standing valve body. It is an object of the present invention to provide a flash gate which can perform flush flushing and, after flush flushing, automatically and quickly raises and returns the valve body to stand by for the next flush flush.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, the base is pivotally attached to the bottom of the waterway so that the waterway can be closed and opened, and the waterway can be closed and opened. A valve body having a hollow portion into which the water in the water channel flows in during the process and the water that has flowed in the upside down state is discharged, and the water in the water channel is pushed until the water level of the water channel rises to the flushing water level. The valve body keeps the standing water stop state against the pressure and closes the water channel, and releases the standing water stop state when the water level rises to the flushing water level, and pushes the water. Standing water stopping state holding / releasing means for permitting the valve body to tilt in the overturning direction due to pressure; rising water stopping state returning means for turning over the valve body which has been turned over to open the water passage and closes the water passage; Wherein the standing water stopping state holding / releasing means comprises the valve body and the The valve body is divided and provided at a gate portion where the body comes into contact with and separates from the valve body, and the standing water stopping state returning means is provided on the valve body, and the valve body is tilted by the start of tilting in the falling direction. The present invention is characterized in that the acceleration force overcomes the standing water stopping state returning means and causes the valve body to fall down.
[0009]
As in the invention as set forth in claim 2, the standing water stopping state returning means includes a spring that constantly urges the valve body in the rising direction, and a falling valve body is in the standing water stopping state by urging the spring. It is preferable to use a moving weight that moves in a direction that increases the restoring force as it returns to the position.
[0010]
As in the third aspect of the present invention, it is preferable to provide a regulating means for regulating lateral leakage of water from both sides of the valve body in the water channel width direction when the valve body falls from the standing water stopping state.
[0011]
According to the first aspect of the present invention, the state in which the valve body stands up and closes the water passage is held by the standing water stopping state holding action of the standing water stopping state holding / releasing means to close the water passage. When the water level of the closed water channel rises to the flushing water level, the operation of the standing water stopping state holding / releasing means cancels the standing water stopping state holding function of the valve body, and the valve body is allowed to fall down. Become.
The pressure (water pressure) of the water in the water channel rising to the flush execution water level is applied to the valve body as a pressing force, and this pressing force overcomes the standing water stopping state returning action of the standing water stopping state returning means. Tilt the valve slightly in the tilting direction.
By slightly tilting the valve body in the tilting direction, the valve body is formed by the sum of the pressing force of the water pressure, the weight of the valve body and the weight of water flowing into the hollow portion, and is larger than the pressing force. The fall promotion power is generated. As a result, the valve body rapidly falls to open the water channel, and the water in the water channel is rapidly discharged to the downstream side to execute the flush cleaning.
Almost simultaneously with the end of the flush cleaning, the water in the hollow portion is discharged to the downstream side of the water channel. As a result, the force resisting the standing water stopping state returning means is reduced to about the own weight of the valve body which is smaller than the standing water stopping state returning force of the standing water stopping state returning means, and the valve body is quickly brought into the standing water stopping state. To close the waterway. The blockage of the water channel due to the return of the valve body to the standing water stopping state is maintained by the standing water stopping state holding action of the standing water stopping state holding / releasing means, and waits for the next flush cleaning.
[0012]
According to the second aspect of the present invention, the urging force of the spring acting on the valve element gradually decreases as the valve element returns from the overturned state to the standing water stop state, but the movable weight is used to stop the valve element from standing up. By moving in the direction to increase the restoring force along with the return of the water state, it works to compensate for the decrease in the urging force of the spring and quickly return the valve body to the standing water stop state.
[0013]
According to the third aspect of the present invention, in the process of the valve body falling from the standing water stopping state, lateral leakage of water from both sides in the water channel width direction of the valve body can be regulated, and the water force of flush cleaning can be increased. .
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a left side view of FIG. 1, FIG. 3 is a plan view of FIG. 1, and FIG. 4 is an enlarged longitudinal section of a valve body taken along line AA of FIG. It is a side view. In these figures, the flash gate 1 is provided with a valve body 2, a standing water stopping state holding / releasing means 3, and a standing water stopping state returning means 4.
[0015]
The valve body 2 has a hollow structure in which a hollow portion 20 is provided, and a base 21 is pivotally attached to the bottom of the water channel 5 by a shaft 6 so as to be rotatable. In the standing water stoppage state shown in FIGS. 1, 2 and 3, both ends in the width direction of the back plate 22 on the side facing the water channel 5 are sealing surfaces 7 a of the gate columns 7 A on both sides in the width direction of the gate 7. , 7a, and the lower end of the back plate 22 abuts the sealing surface 7b of the lower horizontal portion 7B of the gate 7, so that the water in the water channel 5 flows out to the downstream area 5A. Has been prevented. The back plate 22 is provided with a cutout opening 23 through which water in the water channel 5 flows into the hollow portion 20 in the standing water stop state of the valve body 2 and in the process of falling, which will be described later. A plurality of drain holes 25 communicating with the portion 20 are provided. At both ends in the width direction of the hollow portion 20, vertical moving zones 26, 26 which allow rolling (moving) of a moving weight described later are formed. ing.
[0016]
The standing water stopping state holding / releasing means 3 closes the water channel 5 by holding the valve body 2 standing water stopping state until the water level of the water channel 5 rises to the flushing water level HHWL, and the water level rises to the flushing water level HHWL. When the valve body 2 is released, the valve body 2 is released from the standing water stopping state, and the valve body 2 is allowed to tilt in the overturning direction. Is provided separately. That is, the standing / water stopping state holding / releasing means 3 is engaged with the float 30, the float rod 31, and the engagement / disengagement mechanism 32, which are components on the valve element 2 side, and has a horizontal axis which is a component on the gate part 7 side. The engagement holes 33 each having a hole 33 (see FIGS. 5A and 5B) and having a horizontal axis are formed in the gate columns 7A and 7A of the gate portion 7.
[0017]
1 and 2, the float 30 which is a component on the valve body 2 side is vertically movably inserted into the hollow portion 20 of the valve body 2 and attached to the tip of a float rod 31. . The engagement / disengagement mechanism 32 is disposed on the back side of the back plate 22 so as to be able to interlock with the float 30 and the float bar 31. In addition, the engagement / disengagement mechanism 32 may be disposed in the hollow portion 20 of the valve body 2.
[0018]
As shown in FIGS. 5A and 5B, the engagement / disengagement mechanism 32 includes a support shaft 32A, a rotating plate 32B, and a pair of rods 32C, 32C. The support shaft 32A is rotatably and horizontally supported in the hollow portion 20 of the valve body 2, and one end of the support shaft 32A protrudes outside the valve body 2 through the back plate 22 of the valve body 2 in a watertight manner. The base of the turning plate 32B is fixed to this protruding end, so that the turning plate 32B turns simultaneously with the turning of the support shaft 32A. The base end of the float rod 31 is fixed to the support shaft 32 </ b> A inside the valve body 2. The pair of rods 32C, 32C have their respective base ends connected to the free end of the rotary plate 32B, and are horizontally supported so as to be able to reciprocate along the back plate 22 of the valve body 2. , 32C is provided with a locking claw portion 32D having a horizontal axis, and the locking claw portion 32D is provided with an engaging hole 33 having a horizontal axis which is a component on the gate portion 7 side, that is, a gate post of the gate portion 7. 7A, 7A, the engagement hole 33 having a horizontal axis formed in the engagement hole 33 is detachably supported. That is, the lock claw portion 32D is normally protruded and held out of the case 34 by the bias of the spring 3S, and the tapered surface 32d is connected to the gate portion 7 just before the valve body 2 returns to the standing water stop state. By interfering with 7A, the locking pawls 32D, 32D are engaged when the valve body 2 returns to the standing water stopping state while being pressed into the case 34 against the bias of the spring 3S. It is configured to reach the position of the hole 33 and protrude from the case 34 by the bias of the spring 3 </ b> S to engage with the engagement hole 33.
[0019]
The standing water stopping state returning means 4 is, for example, a pair of left and right helical springs 40, 40 wound or inserted around the outer periphery of the shaft 6 to constantly urge the valve body 2 in the rising direction, and the vertical movement zone. 26, 26 are provided with moving weights 41 made of metal spheres which are freely rolled (moved) in the vertical direction. Note that the moving weight 41 may be configured by a metal column or cylinder.
[0020]
On the other hand, as shown in FIG. 4, the hollow portion 20 is closed by the punching metal 8. Thereby, intrusion of solid foreign matter into the hollow portion 20 is prevented, and proper operation of the float 30, the float bar 31, the moving weight 41, and the like can be secured. The punching metal 8 is preferably made of a copper plate or a silver plate. By manufacturing the punching metal 8 from a copper plate or a silver plate, the antibacterial action of copper ions or silver ions is exerted, thereby avoiding the inconvenience of forming a biofilm on the surface of the punching metal 8 and generating “numery”. Therefore, it is possible to avoid a decrease in the water permeation performance of the punching metal 8. In addition, a float 30 that constitutes or covers a liquid contact portion (a portion that comes into contact with wastewater) or a sliding portion other than the punching metal 8 with a copper material or a silver material, or constitutes a standing water stopping state holding / releasing means 3; It is recommended that the float bar 31, the disengagement mechanism 32, and the like be made of a copper material or a silver material to suppress the generation of “slime”.
[0021]
According to the above configuration, while the water level of the water channel 5 in FIG. 2 rises to a water level HWL lower than the flush execution water level HHWL, the pair of rods 32C, 32C of the engagement / disengagement mechanism 32 in the standing and stopped water state holding / releasing means 3 6B engages with the engaging holes 33 of the gate posts 7A, 7A as shown in FIG. 6B (however, in FIG. Only the lock claw portion 32A is shown), and the water passage 5 is closed while the standing and stopping state of the valve body 2 is maintained. In this closed state, as the water level of the water channel 5 rises to the level of HWL, the water level in the hollow portion 20 of the valve body 2 rises to the same level, and the float 30 moves up the water level in the hollow portion 20. Levitate accordingly. The metal moving weight 41 is located at the bottom of the moving zones 26, 26, that is, on the base 21 side of the valve body 2, as shown by the broken line in FIG.
[0022]
When the water level of the water channel 5 rises to the flush execution water level HHWL and the opening 23 is submerged, the water level of the hollow portion 20 of the valve body 2 rises to the same level as the flush execution water level HHWL, and the float 30 is moved to the position shown in FIGS. To the position shown by the two-dot chain line. As a result, the support shaft 32A and the rotating plate 32B of the engaging and disengaging mechanism 32 shown in FIG. 5A in the standing water stopping state holding / releasing means 3 rotate clockwise, and retreat the pair of rods 32C, 32C. Then, the lock claw 32D provided at the distal end of the pair of rods 32C, 32C is retracted from the engagement hole 33 of the gate posts 7A, 7A as shown in FIG. 6A (however, FIG. Only the lock claw 32A at the tip of one rod 32C is shown), and the valve body 2 releases the standing water stopping state holding action, and allows the valve body 2 to fall.
[0023]
Since the pressure (water pressure) of the water in the water channel 2 rising to the flush execution water level HHWL is applied to the valve body 2 as the pressing force, the pressing force is applied to the helical spring in the standing water stopping state returning means 4. The valve body 2 is slightly tilted in the tilting direction (clockwise direction in FIG. 2) by overcoming the spring forces of 40 and 40.
[0024]
When the valve body 2 is slightly tilted in the tilting direction, the pressing force of the water pressure in the water passage 2 and the weight of the valve body 2 and the weight of the water flowing into the hollow portion 20 are applied to the valve body 2. , And an overturning acceleration force greater than the pressing force is generated. As a result, the valve body 2 rapidly falls to the state of the falling angle θ = 90 + α degrees shown by the two-dot chain line in FIG. Therefore, the water in the water channel 5 is rapidly discharged to the downstream region 5A without being disturbed by the valve body 2, and the flush cleaning is performed. When the valve body 2 falls down at a falling angle of 90 + α degrees, the moving zones 26, 26 are inclined to the lower right in FIG. For this reason, as shown by a broken line in FIG. 2, the moving weight 41 located on the base 21 side of the valve body 2 rolls in the moving zones 26, 26, and as shown by a two-dot chain line, To the front end side of the ceiling 24 of FIG.
[0025]
Almost simultaneously with the end of the flush cleaning, the water in the hollow portion 20 is discharged to the downstream region 5A from a plurality of drain holes 25 provided in the ceiling 24 of the valve body 2. As a result, the falling acceleration force is greatly reduced corresponding to the weight of the water flowing into the hollow portion 20, and the spring force of the helical springs 40, 40 in the standing water stopping state returning means 4 is reduced by the valve body. 2 and the weight of the moving weight 41 moving to the tip end side of the tilted valve body 2 becomes larger (stronger) than the value obtained by adding the weight, and the valve body 2 stands up (in the counterclockwise direction in FIG. 2). Direction) and starts to return.
[0026]
Although the spring force of the helical springs 40, 40 acting on the valve body 2 gradually decreases as the valve body 2 returns from the overturned state to the standing water stopping state, the moving weight 41 stops the valve body 2 from standing up. With the return of the water state, the valve body 2 moves from the ceiling 24 side indicated by the two-dot chain line to the base 21 side indicated by the broken line in FIG. Thereby, the spring force of the helical springs 40, 40 is compensated for, and the valve body 2 is quickly returned to the standing water stop state as shown by the solid line in FIG. . When the valve body 2 returns to the standing water stop state and closes the water channel 2, the float 30 is lowered to the position shown by the broken line in FIG. 1 and the solid line in FIG. As shown in FIG. 6B, the lock claws 32D, 32D of the means 3 are engaged with the engagement holes 33 of the gate posts 7A, 7A, so that the valve body 2 is kept in the standing water-stop state, and the next flushing is performed. Wait for cleaning.
[0027]
As described above, the flash gate 1 according to the present invention automatically and surely allows the upright valve body 2 to have a simple structure in which the hoisting device 53 necessary for the conventional flash gate described with reference to FIG. 15 is omitted. The flash cleaning can be executed by being turned over without obstruction, and after the flash cleaning, the valve element 2 can be automatically and quickly raised and returned to a standby state for the next flash cleaning. In addition, since installation can be performed in a place where power supply facilities are not provided, restrictions on the installation location can be eased.
[0028]
On the other hand, as shown in FIG. 7, by providing the regulating means 9 including a pair of left and right side plates 9A, 9A attached to the gate columns 7A, 7A on both sides in the width direction of the gate portion 7, the valve body 2 is provided with the above-described standing water stoppage. In the process of falling from the state, the lateral leakage of water from both sides in the water channel width direction of the valve body 2 is regulated, so that the flushing power is increased and the flushing effect can be enhanced. The restricting means 9 is not limited to the pair of left and right side plates 9A, 9A attached to the gate posts 7A, 7A, and depending on the shape of the gate posts 7A, 7A, as shown in FIG. It may be constituted by a pair of left and right side plates 9A, 9A. Further, instead of the pair of left and right side plates 9A, 9A, a regulating means 9 composed of a bellows that expands and contracts following the standing and falling of the valve body 2 may be provided. By manufacturing the regulating means 9 from a copper plate or a silver plate, the antibacterial action of copper ions or silver ions is exerted, and the inconvenience of forming a biofilm on the surface of the regulating means 9 is avoided. Generation can be suppressed.
[0029]
In the above-described embodiment, the flash gate 1 having an upward opening structure in which the water channel 5 is opened and closed by one valve body 2 has been described. However, as shown in FIG. The valve body 2 may be installed, and a flap valve 10 may be installed corresponding to the upper half of the water channel 5 to have a center opening structure. With such a configuration, only the lower half of the water channel 5 can be opened and the upper half closed by the flap valve 10 at the time of flush cleaning, so that the water channel 5 has a bad smell such as a dirty water pipe that leads to a manhole. In the case of, the fouling valve can be suppressed by the closed flap valve, and if a large amount of wastewater exceeding the design value suddenly flows down, the flap valve together with the valve element 2 should be used. By opening 10, a large amount of sewage can be allowed to suddenly flow down, and it is possible to avoid adversely affecting the pipeline constituting the water channel 5.
[0030]
Further, as shown in FIG. 10, an engaging / disengaging mechanism 32 which is a component on the valve body 2 side of the standing water stopping / holding / release means 3 and an engagement hole 33 which is a component on the gate 7 side are configured as shown in FIG. 10. May be. In FIG. 10, the same portions as those in FIGS. 5A and 5B are denoted by the same reference numerals, and the description of the overlapping structure and operation will be omitted. 10 includes a central shaft 32E rotatably and horizontally supported in the hollow portion 20 of the valve body 2, a central shaft 32E attached to the central shaft 32E, and rotating around the central shaft 32E. 32F, and one end of the disk 32F is pivotally connected via a pin 32G to be supported on the front side of the disk 32F, and the other end is a free end of a rotary plate 32B via a pin 32H. A first link 32I pivotally mounted on the disk 32F and extending from the disk 32F side to the rotating plate 32B side; a lock having a base end pivotally connected to the disk 32F and a distal end projecting upward with a vertical axis. A second link 32J pivotally attached to a vertically movable case 34 accommodating and holding the claw portion 32D. Vertical axis on the lower surface of the frame 7C The are provided have. Even with the up-and-down water-stopping state holding / releasing means 3 having the engagement / disengagement mechanism 32 as a constituent member on the valve body 2 side and the engagement hole 33 as a constituent element on the gate section 7 side with such a structure, The same operation and effect as those of the standing water stopping state holding / releasing means 3 described in the first embodiment can be obtained.
[0031]
Further, the engaging / disengaging mechanism 32, which is a component on the valve body 2 side, and the engaging hole 33, which is a component on the gate portion 7 side, of the standing water stopping state holding / releasing means 3 are configured as shown in FIG. May be. 11, the same parts as those in FIGS. 5 (a), 5 (b), and 10 are denoted by the same reference numerals, and the description of the overlapping structure and operation will be omitted. The engagement / disengagement mechanism 32 of FIG. 11 includes a first gear 32F that rotates around an axis of a center shaft 32E, and a second gear 32M that meshes with the first gear 32F and rotates around an axis of a center shaft 32L. It is. Even with the up-and-down water-stopping state holding / releasing means 3 having the engagement / disengagement mechanism 32 as a constituent member on the valve body 2 side and the engagement hole 33 as a constituent element on the gate section 7 side with such a structure, The same operations and effects as those of the standing / water stopping state holding / releasing means 3 described in the first and second embodiments can be obtained.
[0032]
On the other hand, as shown in FIGS. 12, 13 and 14, the standing / water stopping state holding / releasing means 3 is constituted by an engagement / disengagement mechanism 32 which is a component on the gate portion 7 side and a component on the valve body 2 side. You may comprise with the engagement hole 33. 12 to 14, the same parts as those in FIGS. 5 (a), 5 (b), 10 and 11 are denoted by the same reference numerals, and the description of the overlapping structures and operations will be omitted. The locking mechanism 32 shown in FIGS. 12 to 14 is mounted on one of the gate columns 7A of the gate portion 7 configured to be able to introduce and discharge water from the water channel 5 therein, and is vertically movably inserted into the gate column 7A. Float 32N, lever 32O having a base pivotally connected to gate post 7A, an inner end facing the upper side of float 32N inside gate post 7A, and an outer end projecting outside gate post 7A, and a lower end. The upper end is pivotally attached to the outer end of the lever 32O, the upper end is pivotally attached to the side surface of the disk 32P, and the upper end is rotatably disposed on the front side of the upper end horizontal portion 7C of the gate 7. And a horizontal rotation shaft 32R having a disk 32P mounted on one end thereof so as to be simultaneously rotatable, and a pair of rotation arms 32S, 32S mounted on the horizontal rotation shaft 32R so as to be simultaneously rotatable. Rotating arms 32S, 32S The upper end of the connecting rod 32T is pivotally attached to the end, and the lower end of the connecting rod 32T is vertically movable so as to receive and hold a downwardly projecting lock claw 32D having a vertical axis. The case 34 is pivotally mounted, and a pair of engagement holes 33, 33, which are components on the valve body 2 side, have a vertical axis on the ceiling 24 of the valve body 2 and correspond to the lock claw 32D. It is provided. The up-and-down water stopping / holding / releasing means 3 having the engagement / disengagement mechanism 32 as a component on the gate portion 7 side having such a structure and a pair of engagement holes 33, 33 as components on the valve body 2 side. Even in this case, the same operation and effect as the standing water stopping state holding / releasing means 3 described in the first embodiment can be obtained.
[0033]
That is, in the standing water stopping state holding / releasing means 3 shown in FIGS. 12 to 14, the valve body 2 is kept in the standing water stopping state and the water passage 5 is closed until the water level of the water passage 5 rises to the flush execution water level HHWL. When the water level in the water channel 5 rises to the flush execution water level HHWL, the water level in one of the gate posts 7A rises to the same level and the float 32N floats, and the disc is moved through the lever 32O and the rod 32Q. 13P, the horizontal rotating shaft 32R and the pair of rotating arms 32S, 32S are rotated counterclockwise in FIGS. 13 and 11 (c) to pull up the cases 34, 34. By retracting from the engaging hole 33 provided in the ceiling 24 of the second valve 2, the holding action of the valve body 2 in the standing water stopping state is released, and the valve body 2 can be allowed to fall. Further, the tapered surface 32d of the lock claw portion 32D interferes with the ceiling 24 of the valve element 2 just before the valve element 2 returns to the standing water stop state, and is pressed into the case 34 against the bias of the spring 3S. When the valve body 2 returns to the standing water stopping state, the lock claw portion 32D reaches the position of the engagement hole 33 and projects from the cases 34, 34 by the bias of the spring 3S. By engaging with the holes 33, 33, the valve body 2 can be kept in the standing and stopped state, and can be put on standby for the next flush cleaning.
[0034]
Further, by attaching spring force adjusting means (not shown) capable of adjusting the spring force of the helical springs 40, 40, which are components of the standing water stopping state returning means 4, the helical springs 40, 40 are provided. Since the spring force can be adjusted, the flash gate is used to adjust the operation of automatically and reliably turning over the upstanding valve body 2 to perform flush cleaning and the operation of quickly returning the valve body 2 to the upright state after flush cleaning. 1 can be easily performed at the installation site.
[0035]
【The invention's effect】
As described above, since the flash gate of the present invention is configured, the following effects can be obtained.
[0036]
According to the first aspect of the present invention, the upright valve body is automatically and surely turned over and flash cleaning is performed by a simple structure in which a conventional hoisting device necessary for a flash gate is omitted. After the flushing, the valve body can be automatically and quickly raised and returned to the standby state for the next flushing. In addition, since installation can be performed in a place where power supply facilities are not provided, restrictions on the installation location can be eased.
[0037]
According to the second aspect of the present invention, the urging force of the spring, which gradually decreases as the valve element returns from the overturned state to the standing water stop state, is supplemented by the movement of the moving weight, and the valve element is quickly raised. It is possible to return to the water stop state and to reliably close the water channel.
[0038]
According to the invention as set forth in claim 3, in the process of the valve body falling from the standing water stopping state, side leakage of water from both sides in the water channel width direction of the valve body is regulated, and the water force of flush cleaning is increased, Flash cleaning effect can be improved.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of the present invention.
FIG. 2 is a left side view of FIG.
FIG. 3 is a plan view of FIG. 1;
FIG. 4 is an enlarged vertical sectional side view of the valve body taken along line AA of FIG. 1;
FIG. 5 is a configuration diagram illustrating an example of a standing water stopping state holding / releasing means.
FIG. 6 is an operation explanatory view of a standing water stopping state holding / releasing means.
FIG. 7 is a perspective view showing an example of a regulating unit.
FIG. 8 is a perspective view showing another example of the regulating means.
FIG. 9 is a perspective view showing another embodiment of the present invention.
FIG. 10 is a configuration diagram showing another example of the standing water stopping state holding / releasing means.
FIG. 11 is a configuration diagram showing a modification of FIG. 10;
FIG. 12 is a perspective view of still another example of the standing water stopping state holding / releasing means.
FIG. 13 is a side view showing a state where the valve body of FIG. 12 is closed.
FIG. 14 is an enlarged side view showing a main part of FIG. 13;
FIG. 15 is a longitudinal sectional side view of a conventional example.
[Explanation of symbols]
1 Flash Gate
2 valve body
3 Standing water stop condition holding / releasing means
4 means to recover standing water
5 Waterways
7 Gate
9 Regulatory measures
20 Hollow part of valve body
21 Base of valve body
40 spring
41 Moving weight
HHWL flush execution water level

Claims (3)

The base is pivotally attached to the bottom of the waterway so as to be able to stand upright and fall over, so that the waterway can be closed and opened, and the water in the waterway flows in the standing water stop state and in the process of overturning, and the water flows in the overturned state. A valve body having a hollow portion through which water is discharged,
Until the water level of the water channel rises to the flushing water level, the valve body keeps the standing water stop state against the pressing force of the water in the water channel and closes the water channel, and the water level rises to the flushing water level. A rising / water stopping state holding / releasing means for releasing the holding of the standing / water stopping state and allowing the valve body to tilt in the overturning direction by the pressing force of the water;
An upright water stopping state returning means for erecting the valve body that has been overturned to open the waterway and closes the waterway,
The standing water stopping state holding / releasing means is provided separately in a gate portion where the valve body and the valve body come and go,
The standing water stop state return means is provided in the valve body,
A flash gate, wherein the valve body is configured such that the overturning acceleration force generated in the valve body due to the start of tilting of the valve body in the overturning direction overcomes the standing water stop state returning means and causes the valve body to overturn. The rising and stopping water state returning means increases a restoring force as a spring that constantly urges the valve body in the rising direction and a valve body that has fallen returns to the standing and stopped water state by the bias of the spring. The flash gate according to claim 1, further comprising: a moving weight that moves in a direction in which the flash gate is moved. 3. The flash gate according to claim 1, further comprising a regulating unit configured to regulate lateral leakage of water from both sides of the valve body in the width direction of the water when the valve body falls from the standing water stop state. 4. .

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