JP4044798B2 - Emergency-response gate pump equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gate pump facility installed in a drainage lock such as a river or a waterway. More particularly, the present invention relates to a gate pump facility that opens and closes a drainage lock gate with a three-gate configuration so that it can cope with an emergency.
[0002]
[Prior art]
The gate of the drainage lock gate at the boundary between the sea and river or the boundary between the main river (also called the outside water side on the downstream side) and the tributary (also called the inside water side on the upstream side) usually has a high water level. It is opened to flow the water of the upstream tributary to the downstream main river with a low water level, but when the water level of the downstream main river becomes high due to, for example, a typhoon, etc. (when the tributary side water level exceeds the specified level) Must be closed. Normally, the water level on the tributary side is higher than the water level on the main river side, and natural drainage is performed from the tributary side toward the main river side.
[0003]
In addition, when the water level on the main river side becomes higher than the water level on the tributary river side, the drainage gate is closed to prevent backflow. There is also a gate pump in which a drainage pump is incorporated in a gate such as a drainage lock. In this case, the gate such as the drainage lock is closed and the water is forcibly drained by the submersible pump when the water level on the main river side becomes higher than the water level on the tributary side. Conventionally, natural drainage is performed by opening the gate, and forced drainage is performed by a pump during reverse flow. Further, in the gate pump, a check valve is provided in the drain pump, and when the drain pump stops the drain operation, it is prevented from flowing backward from the discharge port.
[0004]
When the water level difference between the main river side and the tributary river side changes frequently, for example, in the case of rain, the difference between the water level on the main river side and the water level on the tributary side becomes unstable, and which water level is higher It may be difficult to judge. Furthermore, the water level on the main river side and the tributary side may be repeatedly changed in a short time. Even in such a case, the gate is repeatedly opened and closed between the upper part of the drainage gate and the bottom of the waterway.
[0005]
In this way, the difference in water level between the main river side and the tributary river side is subtle, and alternately rises and falls, and even if the water level on the tributary river side becomes high, the gate is usually located above the drainage lock gate. The gate is lifted up to a high point and the natural drainage is carried out. When the water level on the main river side rises, the gate is lowered to the bottom of the waterway, the gate is closed, and forced drainage is performed by a submersible pump. However, even in such an unstable state, opening and closing operations must be frequently performed, which is a management and operational problem. Although the gate does not frequently perform opening and closing operations, repeating the operation frequently results in an increase in the number of operations and an increase in operation management burden such as maintenance.
[0006]
Furthermore, since the operation and the stop are repeated even when there is no difference in water level, the load on the submersible pump is large, and there is a possibility that the submersible pump is mechanically damaged. In case of such trouble, it is necessary to lift the submersible pump upward from the water channel and perform maintenance at a high place above the water channel. When drainage is flowing, it is particularly dangerous and involves difficult work.
[0007]
When trouble occurs in a gate pump that does not pull up the drainage pump, the pump operation is stopped and the check valve is closed to prevent backflow, and maintenance work is performed when the water level drops. In addition, the drainage pump is required to be able to drain to the lowest possible water level, and for this reason, a method with measures for preventing suction vortex has been implemented.
[0008]
In addition, such gate facilities are generally installed in a narrow space adjacent to a house, and in the case of a pull-up opening / closing type, a concrete drainage lock structure is used to install the switchgear on top of the drainage lock. Things get higher and damage the surrounding landscape. In addition, a steel mount is also required to install the switchgear, but installing it in a narrow place such as a residential area requires difficult construction and is dangerous and expensive. On the other hand, there is a demand for a gate that can open and close the drain port appropriately in stages depending on the state of the water channel.
[0009]
[Problems to be solved by the invention]
If trouble occurs in the submersible pump of the gate pump at present, the trouble can be dealt with immediately if it is raised as described above. However, drainage always flows, and there is a problem that backflow cannot be prevented if there is no submersible pump in the water channel. In addition, when the trouble processing is for a long period of time, a problem also arises in wastewater management, and there is a situation that the drainage must be stopped in some way. Since the flow of wastewater changes regardless of whether or not there is a trouble, it is ideal to maintain the state of wastewater management close to normal even if there is a trouble. The present invention has been created as a new facility by solving the problems of the prior art by making use of the features of the conventional methods and the like based on the background described above, and achieves the following objects.
[0010]
The object of the present invention is to guide the second gate to the first gate so that it can be opened and closed relative to the first gate, and to connect the gates in stages according to the water level difference between the upstream side and the downstream side. The purpose is to provide gate pump equipment that opens and closes to improve drainage efficiency.
[0011]
Another object of the present invention is to provide a third gate having a submersible pump independently for the first gate and the second gate, to prevent the generation of suction vortices even at low water levels, stably and reliably. To provide a gate pump facility that can drain water.
[0012]
Still another object of the present invention is to provide a gate pump facility that can close a water channel even if a trouble occurs in a submersible pump and can prevent a drainage flow such as a reverse flow.
[0013]
Still another object of the present invention is to provide a gate pump facility that can raise a submersible pump onto a water channel when trouble occurs in the submersible pump, facilitates maintenance, and reduces costs.
[0014]
Still another object of the present invention is to provide a gate pump facility that takes environmental conservation into consideration without lowering the height of the facility and damaging the surrounding landscape.
[0015]
[Means for Solving the Problems]
In order to solve the above problems, the following means are adopted. That is,
The emergency response type gate pump facility of the present invention 1 is a gate pump facility installed in a drainage gate having a drainage port, and is guided in the ascending / descending direction of the drainage gate and has a gate drainage port in the lower part. A first gate that opens and closes a drain port of the drain gate, and is guided by the first gate, and moves up and down relative to the first gate to open and close the gate drain port of the first gate and the first gate. A second gate that moves up and down by engaging with the gate; and a first opening and closing device that is provided at an upper portion of the drainage gate and that has one end coupled to the second gate and that lifts and lowers the first gate and the second gate stepwise. A third gate that moves up and down along the first gate to open and close the gate drain, a second opening and closing device that is provided above the drain gate and opens and closes the third gate, and the third gate Provided and the gate drain is opened. When the submersible pump that enables natural drainage or forced drainage from upstream to downstream and the discharge port side of this submersible pump, it opens during natural drainage or forced drainage and closes when it reverses the flow of natural drainage And a check valve.
[0016]
The gate configuration is a multi-stage open / close configuration in which the first gate and the second gate can be opened / closed independently by one open / close device, and the third gate can be opened / closed independently by another open / close device. Even if trouble occurs in the third gate, the drainage gate of the drainage gate can be closed with one switchgear, so that backflow can be prevented and the trouble can be handled safely without drainage flow.
[0017]
In the first aspect of the present invention, the third gate may have a gate drain port and face the third gate, and a water stop body for drain water stop may be provided integrally with the first gate. The waterstop may be a part of the first gate or may have the same shape as the first gate.
[0018]
The waterstop constitutes a guide part of the third gate, and when the third gate descends and the gate drainage port is closed, the upper part of the gate is closed with an outer plate structure, and a watertight device is provided between the waterstop and the third gate. Is provided to stop the water. By providing this water stop, the gate drain becomes thicker, and when applied to the embodiment where natural drainage flows from the first gate side to the third gate side, the suction flow of drainage follows the wall surface of the gate drainage channel. Since it becomes a flow, it is effective in preventing suction vortex generation.
[0019]
Furthermore, in the first aspect of the present invention, a contact body may be provided in the first gate that makes contact when the second gate is raised and raises the first gate together with the second gate. The opening and closing operation of the first gate uses the opening and closing operation of the second gate. A contact body serving as a stopper is provided on the upper portion of the first gate, and the first gate and the second gate are operated relatively to perform stepwise opening and closing. After the second gate descends and the first gate closes the drain, the gate drain can be closed by the second gate.
[0020]
Furthermore, in the said invention 1, you may provide the guide member for enabling the said 3rd gate to leave the said 1st gate and to move to the said drainage lock upper part in the said drainage lock. By pulling up the third gate to an upper position away from the first gate, the submersible pump of the third gate can be easily maintained.
[0021]
Further, in the first aspect of the invention, the first opening / closing device may include a rack bar having one end connected to the second gate and the other end connected to the opening / closing mechanism. Since the configuration is simple and the gate can be forcibly opened and closed both when it is raised and lowered, the opening and closing operation can be performed reliably.
[0022]
Further, in the first aspect of the invention, the second opening / closing device may include a rack bar having one end connected to the third gate and the other end connected to the opening / closing mechanism. Since the configuration is simple and the gate can be forcibly opened and closed both when it is raised and lowered, the opening and closing operation can be performed reliably.
[0023]
Furthermore, in the first aspect of the invention, the second gate may be configured to descend and close the gate drain when the third gate becomes abnormal even if the third gate is in the lowered state. Good. It is suitable for emergency, and it is possible to stop the drainage flow and raise the third gate.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 is a side sectional view showing the overall configuration of an emergency response type gate pump facility 1 according to the present invention. The gate of the present invention is composed of three gates. FIG. 1 shows a first stage opening / closing state in which the third gate is installed at the lowest position of the drainage lock channel and the first gate is also installed at the channel bottom. Indicates. The second gate is in an open state. In this case, the drainage flows through only the submersible pump. Although the gate is in a closed state, when there is little drainage, natural drainage is possible by passing the drainage through a submersible pump provided at the third gate.
[0025]
FIG. 2 is a side cross-sectional view similar to FIG. 1, and is a second-stage opening / closing configuration diagram in which the third gate is lifted and opened to show a natural drainage state. In the configuration shown in FIG. 1, when natural drainage continues and the amount of water increases, drainage is performed only by passing through the submersible pump. There is a risk of damage. In addition, when the flow that has been a reverse flow suddenly changes to a flow from the upstream, and natural drainage cannot be performed only with the drainage water of the submersible pump, the submersible pump is pulled up to the second stage open / close state.
[0026]
FIG. 3 is a side sectional view similar to FIG. 1 and shows a state where the third gate is further raised and pulled upward, and the first and second gates are also raised. In this case, all drain outlets of the drainage gate are opened. This corresponds to the case where the amount of drainage is large. FIG. 4 shows the state in which the third gate is still raised and positioned at the top of the drainage lock. In the case of this figure, it is the structure corresponding to the trouble, maintenance, etc. of a 3rd gate. The first gate and the second gate are located at the bottom of the water channel to prevent backflow and close the drain.
[0027]
FIG. 5 is a front view of FIG. 1, FIG. 6 is a partial plan view, the figure of (a) part shows the XX sectional view of FIG. The YY sectional view of FIG. 1 is shown. Since the plan view is a left-right symmetric diagram, for convenience of explanation, the two parts are divided and displayed. FIG. 7 is a partial view showing the configuration of the upper frame, and is a ZZ cross-sectional view of FIG. The configuration is roughly as described above. Next, the detailed configuration of the gate pump facility 1 of the present invention will be described with reference to the drawings.
[0028]
Usually, the drainage of the water channel flows from the upstream side (inside water side) A to the downstream side (outside water side) B in the form of natural drainage. The drainage lock 2 that is the base of the gate pump facility 1 is made of concrete, the drainage lock 2 forms a substantially rectangular gate body, and the lower part is a drainage port 3. Two opening and closing devices 4 and 5 for opening and closing the gate are attached to the upper part of the drainage lock 2.
[0029]
There are three gates, one of which constitutes the first gate 6 corresponding to the parent gate, which is directly guided by the side wall of the drainage lock 2 and moves up and down. The first gate 6 is installed in a state where the drain port 3 of the drainage lock 2 is closed, but the upper part is made of a steel plate and cannot pass water, and the lower part is opened and has a gate drain port 7. It is configured to allow water to pass through. Therefore, in the state shown in FIG. 1, the upper half of the drainage port 3 of the drainage lock 2 is closed and the lower half is opened. Further, the first gate 6 is provided with a watertight device 6g and constitutes a watertight state with respect to the drainage lock 2.
[0030]
The first gate 6 is provided with a water stop frame 8 on the upstream side, and a second gate 9 is provided in a state of being sandwiched between the water stop frame 8 and the first gate 6. The second gate 9 is relatively movable on the first gate 6 in the vertical direction. When the second gate 9 moves to the upper part, the lower part of the first gate 6, that is, the gate drain port 7 is opened. When the second gate 9 moves downward, the gate drain port 7 of the first gate 6 is closed.
[0031]
Therefore, in this case, all the drain ports 3 are closed. One end of a rack bar 10 is attached to the upper part of the second gate 9 via a hanging metal fitting 11. The other end of the rack bar 10 is connected to the drive mechanism of the first opening / closing device 4. Since the front end of the rack bar 10 protrudes outside the first opening / closing device 4, the outer side is covered with a cover 10a. Further, an upper frame 12 is provided between the first gate 6 and the water stop frame 8. The rack bar 10 penetrates through the upper frame 12, but the upper end of the second gate 9 comes into contact with the upper frame 12 when the second gate 9 is raised.
[0032]
The upper frame 12 serves as a stopper, and when the second gate 9 is raised, the upper end of the second gate 9 is in contact with the upper frame 12, and when the second gate 9 is raised, the first gate 6 is suspended. Then, the drain port 3 is opened as shown in FIG. Conversely, when the second gate 9 descends, the first gate 6 also descends with its own weight until the bottom reaches the water channel bottom together with the second gate 9. After the first gate 6 reaches the water channel bottom, only the second gate 9 is lowered.
[0033]
The second gate 9 is provided with a water-tight device 9 g opposite to the first gate 6, and forms a water-tight state between the second gate 9 and the first gate 6. The movement of the second gate 9 is performed by the first opening / closing device 4 provided at the upper part of the drainage lock 2. The opening / closing mechanism of the first opening / closing device 4 is a known means. The first opening / closing device 4 includes a motor, a speed reduction mechanism, and the like, and can be automatically driven. The structure of the first opening / closing device 4 is not illustrated, but the rack bar 10 can be moved up and down by manual operation of the handle. It is a device that can be opened and closed. The use of a rack bar as the transmission means for opening and closing makes it possible to push and pull with a rigid body both when it is raised and lowered unlike a chain, so that a reliable gate opening and closing operation can be performed. It is a simple transmission means.
[0034]
Further, the upstream side of the drainage lock 2 has no walls and is in an open state, and the first gate 6 is guided through a door fitting 13 constituting a guide part provided on the wall side of the drainage lock 2. And is movable in the up-and-down direction. When the first gate 6 descends, the first gate 6 covers and closes the upper half of the rectangular drainage port 3, but when the first gate 6 rises from the drainage port 3, the upper half is opened.
[0035]
As described above, the door metal fitting 13 for guiding the first gate 6 and watertight is embedded in the drainage lock 2 and is attached to the concrete. This door metal fitting 13 includes a water bottom door metal fitting for the side bottom of the first gate 6 and the bottom of the third gate 14 to contact the water channel bottom of the drainage lock 2, and an upper door It consists of hardware and concave side wall door hardware for guiding the first gate 3 in the up-and-down direction on each side wall of the drainage lock 2.
[0036]
The door-to-door hardware 13 is embedded in concrete with a structure such as a steel plate and mold steel. On the other hand, a watertight device 6g is attached to both side portions and the upper part of the side plate of the first gate 6. When the first gate 6 descends in contact with the side wall door metal and upper wall hardware of the drainage lock gate 2 of the drainage lock gate 2 and closes the upper half of the drainage port 3, it is upstream from the downstream side around the drainage port 3. Water is prevented from entering between the door hardware 13 and the watertight device 6g of the first gate 6 through the gap across the side. However, the movement of the water at the gate drain 7 is caused by the difference in water level between the inside and outside.
[0037]
The first gate 6 has a girder structure, and a sliding member 6e is attached to a side surface of the first gate 6 on an end vertical girder 6d located on the drainage lock 2 side. The sliding member 6e slides relative to the door hardware 13 which is a guide for the drainage lock 2, and the first gate 6 is guided in the up-and-down direction while being regulated. The first gate 6 has an outer plate 6a on the upper and downstream sides, and directly receives the flow of drainage. The interior is reinforced with vertical girders 6c, horizontal girders 6b, etc. so as to withstand water pressure.
[0038]
The upstream outer plate 6a serves as a sliding plate for the watertight device 9g of the second gate 9 as a sliding member 9e. A wedge 6h is provided on the end string 6d side of the first gate 6. When the first gate 6 descends and is positioned below the drainage lock 2 and closes the drainage port 3, the wedge 6 h is difficult to interleave with the door hardware 13 of the drainage lock 2. Is pressed and fixed to the drainage lock 2. The presence of the wedge 6h eliminates the play between the first gate 6 and the drainage lock 2.
[0039]
Therefore, when the submersible pump 17 on the third gate 14 is operated, the vibration of the first gate 6 can be prevented, and adverse effects associated with the vibration can be avoided. Further, a water stop frame 8 is provided upstream of the first gate 6 via an end stringer 6 d and is integrated with the first gate 6. The water stop frame 8 also has substantially the same cross-sectional configuration as the first gate 6. An outer plate 8a is provided on the outside, and the inside is reinforced with a vertical beam 8c and a horizontal beam 8b. Further, an end stringer 8 d is provided, and a guide groove 15 is formed between the end stringer 6 d of the first gate 6.
[0040]
The upstream outer plate 8a serves as a sliding plate for the watertight device 14g of the third gate 14 as a sliding member 8e. The water stop frame 8 is provided integrally with the first gate 6 through the end stringers 6d, but has the same function as the first gate 6 and can be regarded as a part of the first gate 6. Good. By having a configuration substantially the same as that of the first gate 6, the gate drainage port 7 has a long waterway stroke. The upper part of the first gate 6 serves as a rising end when the second gate 9 is pulled up, and an upper frame 12 is provided to constitute a stopper for lifting.
[0041]
The upper frame 12 has a rigid configuration, and is a configuration of a steel plate and a steel plate having a steel plate 12a, a reinforcing girder 12b, and a watertight device 12c. The upper frame 12 is fixed across the first gate 6 and the water stop frame 8. The lower end 6 i of the first gate 6 is a lower end when the third gate 14 is lowered, and constitutes an end girder that functions as a lowering stopper. The third gate 14 extends from the first gate 6. It is designed not to come off.
[0042]
A second gate 9 is provided between the first gate 6 and the water stop frame 8 so as to be movable in the up-and-down direction. A guide groove 15 is provided between the first gate 6 and the water stop frame 8, and the second gate 9 is guided in the same direction as the first gate 6 and moves up and down along the guide groove 15. Similarly to the first gate 6, the second gate 9 also has a girder structure, an outer plate 9 a is formed on the outer side, and an end vertical girder 9 d near the drainage lock 2 is fitted in the guide groove 15 of the first gate 6. It is crowded.
[0043]
A surface of the first gate 6 facing the second gate 9 is provided with a sliding material 9e, which is a sliding surface of the watertight device 9g. When the second gate 9 is closed, entry and exit of water is prevented. Further, the second gate 9 is reinforced by the vertical beam 9c and the horizontal beam 9b in the same manner as the first gate 6. A wedge 9h is provided at the end stringer 9d of the second gate 9. When the second gate 9 descends and is positioned below the first gate 6 and closes the gate drain port 7, the wedge 9 h is not easily inserted into the first gate 6, and the second gate 9 becomes the first gate. 6 is pressed and fixed.
[0044]
As a result, the backlash is eliminated between the second gate 9 and the first gate 6, and the two gates together with the wedge 6 h are fixed to the drainage lock gate 2, and the third gate 14 When the upper submersible pump 17 is operated, vibration can be prevented and adverse effects associated with vibration can be avoided.
[0045]
The rack bar 10 is attached to the upper part of the second gate 9 via the hanging metal fitting 11 as described above. Two rack bars 10 are attached along the width direction of the water channel, and are connected to a first opening / closing device 4 provided at the upper part of the drainage lock 2. In the embodiment, two rack rods are interposed in consideration of the wide channel width, but one may be used when the channel width is narrow. A third gate 14 that moves up and down is provided on the upstream side of the water stop frame 8. The third gate 14 is regulated by a guide groove 15a between the water stop frame 8 and the guide frame 16, and moves in the vertical direction.
[0046]
The third gate 14 is also guided by two guide bars 21 provided in the drainage lock 2. Similarly to the first gate 6 and the second gate 9, the third gate 14 has a structure made of a steel plate and a steel plate. The outer plate 14a, the horizontal beam 14b, the vertical beam 14c, the end vertical beam 14d, and the hanging bracket 14f are used. , A watertight device 14g, a pump mounting frame 14h, and a wedge 14i.
[0047]
A submersible pump 17 is attached to the upstream side wall surface of the third gate 14. This submersible pump 17 is attached to the third gate 14, so that this equipment has a gate pump configuration. This submersible pump 17 is a horizontal shaft pump, and the suction port 17c side is attached to a pump mounting frame 14h which is a wall surface of the third gate 14 via a flange 17a, and the discharge port 17b is directed downstream. When the submersible pump 17 is stopped, drainage can pass through the submersible pump 17 and natural drainage is possible.
[0048]
A flap valve 18 (check valve) is attached to the discharge port 17b side, and the flap valve 18 swings in the vertical direction. When the flow is natural drainage or forced drainage, it swings up and down and opens, and when the flow backflows from downstream to upstream, the valve is closed to prevent backflow of drainage.
[0049]
In the present embodiment, the submersible pump 17 has a horizontal shape, but is not limited to a horizontal shape. It may be a vertical shaft submersible pump. Further, a sand pump or the like may be used. In this case, the riverbed can be cleaned. When the submersible pump 17 is driven and the built-in blade rotates, water flows from the upstream side A to the downstream side B in the submersible pump.
[0050]
This flap valve 18 may be of a double door type that swings in a lateral direction and opens and closes. The flap valve 18 constitutes a kind of lid, and when the submersible pump 17 is operated and water flows through the submersible pump 17 in the aforementioned direction, the flap valve 18 is lifted upward by the force of the water flow. When the water level on the downstream side B becomes higher than the water level on the upstream side A and the operation of the submersible pump 17 is stopped, the flap valve 18 is lowered to block the discharge port 17b of the submersible pump 17 and prevent backflow.
[0051]
Next, the second opening / closing device 5 of the third gate 14 will be described. The basic structure of the second opening / closing device 5 is basically the same mechanism as that of the first opening / closing device 4. A suspension fitting 14f is attached to the upper part of the third gate 14 on which the submersible pump 17 is mounted. A hanging pin 19 is provided on the hanging bracket 14 f, and a rack bar 20 is connected to the hanging pin 19. The rack bar 20 is provided with a rack in the longitudinal direction. The moving mechanism of the rack bar 20 is provided in the second opening / closing device 5, and although not shown, the rack bar 20 is moved in the vertical direction by the second opening / closing device 5 using known means such as a gear.
[0052]
When operated with a handle or driven by a motor, the rack bar 20 moves up and down. Two rack bars 20 are provided as described above, and the drive systems of the two rack bars 20 are connected by a connecting means. The number of rack bars 20 is also two as described above, but may be one when the channel width is narrow. When one rack bar 20 is driven, the other rack bar 20 also moves integrally and moves up and down. The upper end of the rack bar 20 is covered with a cover 20 a provided on the upper part of the drainage lock 2. By using the rack bar 20 as the opening / closing transmission means of the third gate 14, the same effect as the rack bar 10 described above can be obtained and a reliable opening / closing operation can be performed.
[0053]
Therefore, the opening / closing operation of the third gate 14 is performed by the rack bar 20 being moved in the vertical direction by the second opening / closing device 5. Further, a dust remover (not shown) is provided in the upstream water channel to remove dust such as driftwood flowing from the upstream, and prevent dust from entering the submersible pump 17. The third gate 14 is supported by the two rack bars 20 and is movable in the vertical direction along the guide groove 15a between the water stop frame 8 and the guide frame 16 as described above. Next, the open / close state of the gate will be described.
[0054]
The first stage open / closed state of FIG. 1 is when the submersible pump is operated due to backflow, or when the amount of water is low, for example, when the rainfall is weakened and the downstream water level is lowered and the downstream water level is the same or slightly lower than the upstream water level. This is a case where the operation of the submersible pump 17 is stopped and natural drainage is performed through the submersible pump 17. When there is a backflow, it can be blocked by the flap valve 18. The first gate 6 blocks the drain port 3 of the drainage lock 2, but the gate drain port 7 is open. The third gate 14 is configured to block the gate drain port 7 of the first gate 6 and prevent backflow.
[0055]
When rain continues and there is a danger that the downstream water will flow backward to the upstream side, the third gate 14 is lowered to perform the forced drainage in the state of FIG. In order for the watertight device to function effectively, the third gate 14 comes into contact with the lower end portion 6i provided at the lower end of the water stop frame 8, and the first gate 6 and the water stop frame 8 close the water path more strongly.
[0056]
In this case, the drainage port 3 and the gate drainage port 7 are in a watertight state by the watertight devices 6g and 9g of the first gate 6 and the second gate 9, respectively. When draining with the first gate 6 and the third gate 14 closed, forced draining is performed with the submersible pump 17 as described above. At this time, the upper frame 12 maintains the watertight state of the upper part of the first gate 6 and the water stop frame 8 as the rack bar 10 passes by the watertight device 12c. When the water flow suddenly changes to a natural flow, the submersible pump 17 is stopped, and the wastewater is passed through the submersible pump 17 to flow from upstream to downstream. At this time, the flap valve 18 swings with the momentum of the water flow and is lifted upward to be in an open state.
[0057]
The flap valve 18 is a flap type valve that swings in the vertical direction about a horizontal axis. When the downstream water level becomes higher than that of the upstream side and the reverse flow occurs, the flap valve 18 constituting the flap-type gate descends with its own weight and the reverse water pressure to block the discharge port 17b of the submersible pump 17, and the flow is submerged. Prevents backflow.
[0058]
Next, the open / close state of the second stage is a state in which only the gate discharge port 7 of the first gate 6 is opened by moving the third gate 14 upward by driving the second open / close device 5. As described above, since the amount of natural wastewater increases and exceeds the passage capacity of the submersible pump, the submersible pump 17 is retracted upward so as not to impose a burden on the submersible pump 17. Therefore, in this case, the submersible pump 17 is not operated.
[0059]
Subsequently, in the third stage opening / closing state, the third gate 14 is continuously lifted upward, and at the same time, the second gate 9 is lifted to lift the first gate 6 together with the upper frame 12 to completely open the drainage port 3. 14 is stopped on the water channel. In this state, the drainage port 3 of the drainage lock 2 is fully opened, and the gate drainage port 7 of the first gate 6 is also opened.
[0060]
Next, in the case of the fourth stage, an open / close state at the time of emergency or maintenance is shown. In the fourth open / close state, the third gate 14 can be independently separated from the first gate 6 and pulled up to the top of the drainage lock 2. This state is an emergency case including maintenance. That is, when trouble occurs, the second gate 9 is first lowered, and then the submersible pump 17 on the third gate 14 is raised to the upper part of the drainage lock 2.
[0061]
As the second gate 9 is lowered, the first gate 6 is lowered to close the drain port 3. The second gate 9 is lowered to close the gate drain port 7 of the first gate 6. In actual operation, when the submersible pump 17 has trouble during forced drainage in the state of FIG. 1, it is only necessary to lower the second gate 9 as the submersible pump 17 is pulled up. In this way, the gate drain port 7 is closed to completely stop the drainage flow.
[0062]
The third gate 14 is pulled up after the second gate 9 is lowered. At this time, the third gate 14 is first lifted using the guide groove 15a between the guide frame 16 and the water stop frame 8 as a guide. When the upper part of the drainage lock 2 is still pulled up beyond this position, the third gate 14 is moved away from the guide groove 15a and pulled up to a position where maintenance can be performed using the guide bar 21. After that, if the trouble is resolved, the third gate 14 is lowered again to close the gate drain port 7 and the second gate 9 is pulled up to allow forced drainage.
[0063]
When there is no trouble or the like, the lower half of the first gate 6 is the gate drainage port 7 in order to open the drainage port 3 entirely, so the first gate 6 is half the height of the first gate 6. Just pull it up. Thereby, compared with the past, the height of the drainage lock 2 can be made low, and maintenance can be performed very easily.
[0064]
(Embodiment 2)
8 to 13 are diagrams showing other embodiments of the emergency-response gate pump facility. The basic configuration for mounting the first gate 6 to the drainage gate 2 and the basic configuration for mounting the second gate 9 to the first gate 6 is the same as described above, and the mounting configuration for the third gate 14 is also the same as described above. Detailed explanation is omitted here.
The difference from Embodiment 1 is that the direction of the drainage flow is opposite between the upstream side and the downstream side. In the second embodiment, the first gate 6 side is upstream, and the third gate 14 side is downstream. In this case, the mounting direction of the submersible pump 17 of the third gate 14 is reversed. Moreover, the attachment position with respect to the 3rd gate 14 differs from Embodiment 1 by arrange | positioning the discharge outlet 17b on the outer side.
[0065]
Therefore, the shape of the third gate 14 is different from that of the third gate 14 of the first embodiment. Waste water flows from the first gate 6 side to the third gate 14 side, and flows from the gate drain port 7 toward the submersible pump 17 side. As described above, the vicinity of the gate drain port 7 is an overlapping portion of the first gate 6, the second gate 9, and the water stop frame 8, and the wall surface forms a thick channel. For this reason, when suction is performed by the submersible pump 17, vortex generation due to air suction is prevented. Since the side wall of the gate drain port 7 has a thickness, there is an effect of preventing air suction vortex generation.
[0066]
FIG. 8 is a view corresponding to FIG. 1, and the attachment position of the submersible pump 17 of the third gate 14 is different as described above. Since the natural drainage flows as shown by the arrows, the pressing force due to the flow is applied to the water stop frame 8 side, and a force is applied to each watertight device in the floating direction. The flap valve 18 is in a state incorporated in the third gate 14 in the first embodiment, but is located outside the third gate 14 in the present embodiment.
[0067]
FIG. 9 is a diagram corresponding to FIG. 2, and FIG. 10 is a diagram corresponding to FIG. 3, basically having the above-described configuration. FIG. 11 corresponds to FIG. The case of this example is basically the same as described above, but since the flap valve relationship is outside, the flap valve-related maintenance can be easily performed. FIG. 12 is a view corresponding to FIG. 5, and the direction of the submersible pump 17 portion is different, but the other configuration is the same as FIG. 13 is a view corresponding to FIG. 6. FIG. 13 (c) shows a U-U cross-sectional view of FIG. 9, and FIG. 13 (d) shows a V-V cross-sectional view of FIG. .
[0068]
As mentioned above, although embodiment of this invention was described with the slide gate, this invention is not limited to the said embodiment, A roller gate is also possible. Moreover, although the water stop frame is configured as a separate member, it may be configured integrally as a part of the first gate. Various modifications can be made within the scope of the technical idea described in the claims and the description and the drawings. It should be noted that any shape or material not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the effects and effects of the present invention are exhibited. Needless to say, the present invention is not limited to the embodiment.
[0069]
【The invention's effect】
As described above, the water channel opening and closing method by the gate pump is configured as a two-line multi-stage gate pump configuration, and therefore, the following excellent effects are obtained. In case of an emergency such as when a trouble occurs in the submersible pump of the gate pump including maintenance, the gate installed independently of the submersible pump side is immediately closed to stop the water flow and avoid damaging the submersible pump. When troubles were resolved, it was possible to immediately return to the original state and to easily perform operations according to the difference in water level inside and outside.
[0070]
In particular, especially in the case of riverside installation, the structure can prevent the generation of vortices due to suction of the submersible pump. Further, the height of the drainage lock can be lowered, and the gate pump equipment can be configured low. For this reason, construction costs were not incurred and the costs were reduced. Since the submersible pump can be pulled up to the open side above the gate, maintenance of the submersible pump can be performed easily and safely. Since the drainage gate was able to be lowered, it became a facility that did not impair the beauty.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a gate pump facility of the present invention showing a first stage of gate opening / closing in Embodiment 1. FIG.
FIG. 2 is a side cross-sectional view of the gate pump equipment of the present invention showing a second stage of gate opening and closing in the first embodiment.
FIG. 3 is a side cross-sectional view of the gate pump equipment of the present invention showing a third stage of gate opening and closing in the first embodiment.
FIG. 4 is a side cross-sectional view of the gate pump facility of the present invention showing a fourth stage of gate opening / closing in the first embodiment.
FIG. 5 is a front view of FIG. 1;
6 is a partial plan view, FIG. 6A is a sectional view taken along line XX in FIG. 2, and FIG. 6B is a sectional view taken along line YY in FIG.
7 is a partial plan view and shows a ZZ cross-sectional view of FIG. 1; FIG.
FIG. 8 is a side cross-sectional view of the gate pump facility of the present invention showing a first stage of gate opening and closing in the second embodiment.
FIG. 9 is a side cross-sectional view of the gate pump equipment of the present invention showing a second stage of gate opening and closing in the second embodiment.
FIG. 10 is a side cross-sectional view of the gate pump facility of the present invention showing a third stage of gate opening and closing in the second embodiment.
FIG. 11 is a side cross-sectional view of the gate pump equipment of the present invention showing a fourth stage of gate opening and closing in the second embodiment.
FIG. 12 is a front view of FIG. 8;
13 is a partial plan view, FIG. 13C is a sectional view taken along the line U-U in FIG. 9, and FIG. 13D is a sectional view taken along the line V-V in FIG.
[Explanation of symbols]
1 ... Emergency emergency gate pump equipment
2 ... Drainage gate
3 ... Drain outlet
4. First opening / closing device
5. Second opening / closing device
6 ... 1st gate
7 ... Gate drain
8 ... still water frame
9 ... Second gate
10 ... Rack bar
12 ... Upper frame
14 ... Third gate
17 ... Submersible pump
18 ... flap valve
20 ... Rack bar
21 ... Guide bar

Claims (7)

A gate pump facility installed in a drainage gate having a drainage port,
A first gate that is guided in the raising and lowering direction of the drainage gate and has a gate drainage port at a lower portion thereof to open and close the drainage gate of the drainage gate;
A second gate that is guided by the first gate, moves up and down relative to the first gate, opens and closes the gate drain of the first gate, and moves up and down by engaging with the first gate;
A first opening / closing device provided at an upper portion of the drainage gate and having one end coupled to the second gate and opening / closing the first gate and the second gate stepwise;
A third gate that moves up and down along the first gate to open and close the gate drain;
A second opening / closing device provided above the drainage gate to open and close the third gate;
Natural drainage from upstream to downstream when the gate drain opening provided at the third gate is opened, or a submersible pump that enables forced drainage,
An emergency type gate pump facility that is provided on the discharge port side of this submersible pump and that has a check valve that opens when natural drainage or forced drainage is closed and closes when it flows back to the flow of natural drainage. In the emergency response type gate pump equipment according to claim 1,
An emergency type gate pump facility characterized in that the third gate has a gate drain opening and is opposed to the third gate, and a water stop body for drain water stop is provided integrally with the first gate. In the emergency response type gate pump equipment according to claim 1,
An emergency response type gate pump facility, wherein the first gate is provided with an abutting body that abuts when the second gate is raised and raises the first gate together with the second gate. In the emergency response type gate pump equipment according to claim 1,
The emergency gate pump facility characterized in that a guide member is provided on the drainage gate to allow the third gate to move away from the first gate and move to the upper part of the drainage gate. . In the emergency response type gate pump equipment according to claim 1,
The emergency opening type gate pump facility, wherein the first opening / closing device includes a rack bar having one end connected to the second gate and the other end connected to the opening / closing mechanism. In the emergency response type gate pump equipment according to claim 1,
The emergency opening type gate pump equipment, wherein the second opening / closing device includes a rack bar having one end connected to the third gate and the other end connected to the opening / closing mechanism. In the emergency response type gate pump equipment according to claim 1,
The second gate is configured to be lowered and close the gate drain port even when the third gate is in a lowered state when the third gate becomes abnormal. Type gate pump equipment.

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