JP2644864B2 - Gate pump equipment and its operation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a gate pump facility applied to drainage of waterways such as small waterways and small rivers and a method of operating the same, and particularly to an urban area where space saving is required. It is suitable for drainage pump equipment for small waterways and small rivers.

[Conventional technology]

Conventional devices of this type include those described in JP-A-52-136401 and JP-A-56-5883.

[Problems to be solved by the invention]

In the device described in Japanese Patent Application Laid-Open No. 52-136401, a screen is provided at the pump suction portion, so that foreign matter easily adheres to the device, which immediately causes clogging and makes it impossible to operate the pump for a long time. In particular, when a large amount of foreign matter flows in, for example, during a flood, clogging of the screen due to the foreign matter becomes remarkable, and the amount of drainage decreases and drainage becomes impossible. Further, if the water flowing in the water channel is dirty, the position of the screen is not known, and the work of removing foreign matter from the screen is difficult because the screen is spherical.

In the above-mentioned Japanese Patent Publication No. Sho 56-5883, a screen is provided independently on the upstream side of the gate pump. However, since the screen is always set in the water channel, foreign substances in the water flowing through the water channel are always present. There was a disadvantage that the screen was caught and clogged immediately.

SUMMARY OF THE INVENTION An object of the present invention is to provide a gate pump equipment and a method of operating the same, which can easily remove foreign substances from the screen even during the operation of the pump, and can automatically retreat the screen from the water channel at the time of natural flow without the need for operation of the pump. Is to get

[Means for solving the problem]

In order to achieve the above object, the gate pump equipment of the present invention is characterized by a gate that is provided movably up and down to open and close a water channel, and a pump that is attached to the gate and discharges water on one side of the gate to the other side of the gate. And a flat screen provided on the upstream side of the pump, set in the waterway in conjunction with the downward movement of the gate, and retracted above the waterway in conjunction with the upward movement of the gate. It is in.

Another feature of the present invention is that a gate is provided movably up and down to open and close a water channel, a pump attached to the gate to discharge water on one side of the gate to the other side of the gate, and a pump upstream of the pump. A screen that moves up and down in conjunction with the up and down movement of the gate, wherein the screen has a lower end located upstream from an upper end thereof when set in a water channel.

Still another feature of the present invention is that a gate is provided movably up and down to open and close a water channel, a pump attached to the gate to discharge water on one side of the gate to the other side of the gate, and a pump upstream of the pump. A screen which is set in or retracted from a water channel in conjunction with the vertical movement of the gate, a dust remover which adheres to the screen and removes foreign matter from the screen, and a dust remover which removes foreign matter from the screen. And a foreign matter discharge plate for discharging to a downstream side of the pump.

Another feature of the present invention is a gate that opens and closes a water channel, a pump that is attached to the gate and discharges water on one side of the gate to the other side of the gate, and is provided upstream of the pump,
A screen set in or retracted from a waterway in conjunction with the opening and closing operation of the gate, a dust remover for removing foreign matter attached to the screen from the screen, and a foreign matter removed by the dust remover downstream of the pump. And a foreign matter discharge plate for discharging to the gate pump equipment.

Still another feature of the present invention is that a gate is provided movably up and down so as to open and close a water channel, a pump attached to the gate and discharging water on one side of the gate to the other side of the gate, A screen integrally mounted and provided on the upstream side of the pump, a dust remover attached to the screen when the screen is set in a water channel to remove foreign matter from the screen, and a dust remover attached to the gate and And a foreign matter discharge plate for discharging foreign matter removed by the dust remover to the downstream side of the pump.

Another feature of the present invention is a waterway opening / closing means for opening / closing a waterway, a pump for discharging water on one side of the waterway opening / closing means to the other side when the waterway opening / closing means is set in the waterway, and Foreign matter removing means provided on the upstream side and set aside in the waterway or retreating from the waterway in conjunction with the opening / closing operation of the waterway opening / closing means, foreign matter scraping means for scraping foreign matter adhering to the foreign matter removing means, And a foreign matter discharging means for discharging foreign matters scraped off by the means to the downstream side of the pump.

Also, a feature of the operation method of the gate pump equipment of the present invention is that a gate having a pump is set in a waterway, a screen is set upstream of the gate in the waterway in conjunction with the movement of the gate, and then the pump is driven. The object of the present invention is to discharge the water on the upstream side of the gate to the downstream side of the gate, to scrape off the foreign substances attached to the screen during the movement of the pump, and to discharge the foreign matter to the downstream side of the gate.

Further, another feature of the operation method of the present invention is that a gate pump facility in which a gate, a pump and a screen inclined so that a lower end is located on an upstream side is attached to a scaffold on a waterway so as to be vertically movable, and one-side scraping is performed. Attach a dust remover to the scaffold so that the part moves up and down parallel to the front of the screen,
After the gate pump equipment is set in the water channel, the scraping part of the dust remover is expanded and contracted to scrape foreign matter adhering to the front of the screen, and the scraped foreign matter is discharged to the downstream side of the gate. The gate pump equipment is moved upward in a state where it is moved upward and fixed above, and is retracted above the water channel.

[Action]

According to the present invention, a screen for removing foreign substances from running water during operation of the pump can be automatically installed in the water channel on the upstream side of the pump during the operation of the pump, and the pump can be drained.

In addition, when the screen is formed on a flat surface, or when the screen is set in a water channel, the lower end thereof is located upstream of the upper end, so that when foreign matter adheres to the screen, the screen is formed from above the water surface. The foreign matter can be easily removed with a scraper or the like. In particular, when the gate pump equipment is equipped with a dust remover and automatically removes foreign matter adhering to the screen, even if the running water is turbid and the position of the screen is unknown, the foreign matter adhering to the screen can be surely removed. Can be removed. Furthermore, by providing the dust remover and a foreign matter discharge plate that discharges foreign matter removed by the dust remover to the downstream side of the pump, foreign matter scraped off by the dust remover can be automatically made to flow downstream. Accordingly, there is no need to separately treat the scraped foreign matter.

On the other hand, the gate moves upward during natural flow,
The screen is also retracted above the water channel in conjunction with the upward movement of the gate, so there is no need to periodically remove dust from the screen during natural flow, which reduces the operating time of the dust remover, thereby reducing running costs. The service life of the gate pump equipment can be extended.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

A first embodiment of the present invention will be described with reference to FIGS.

In the figure, 1 is a submersible motor pump, 2 is a gate integrally mounted with a submersible motor pump, 3 is a gate drive unit for moving the gate 2 up and down, 4 is a flap valve provided on the discharge casing of the pump 1, and 5 is This is a screen provided on the upstream side of the pump 1 and integrally attached to the gate 2.

Fig. 1 shows the state of natural flow, pump 1, gate
2. Both the screen 5 and the screen 5 are retracted above the water channel 10, and the water channel flows as a normal water channel and the flowing water naturally flows down.

FIG. 2 shows a state during drainage operation. In order to shift from the natural flow shown in FIG. 1 to the drainage operation shown in FIG. 2, the gate drive unit is driven to move the gate down and set it in the waterway.
The pump 1 and the screen 5, which are integrally mounted on the gate, also move down with the lowering of the gate and are set in the water channel. When the pump 1 is driven, foreign matter in the running water is screen 5
And water is drained downstream of the gate by the pump 1. Since the lower end of the screen 5 is a flat screen located upstream of its upper end when set in the water channel, foreign substances adhering to the screen 5 can be removed from the upper part of the gate even when the pump is in use. The worker can easily remove the scaffold 11 from the scaffold 11 attached thereto using a scraper.

When the water channel is returned to the natural flow again, the gate 1 is moved up by the gate driving unit 3 so that the pump 1 and the screen 5 integrally formed with the gate 2 are also moved up at the same time. You can evacuate. In addition, by retreating the screen from the water channel during natural flow, it is possible to prevent foreign substances from adhering to the screen,
There is no need to remove foreign matter from the screen.

Next, a second embodiment of the present invention will be described with reference to FIGS. In the drawings, the portions denoted by the same reference numerals as those in FIGS. 1 and 2 indicate the same or corresponding portions. In this embodiment, a scaffold in which the screen 5 is fixed on the waterway
The lower end and the rod 2a of the gate 2 are connected to each other by a wire rope 7 via a runway 6 at a point 12 shown in FIG. As a result, when the gate 2 is moved up and down, the screen 5 rotates around the point a and is set in the water channel 10 or retracted from the water channel 10. Now, as shown in FIG. 4, when the length of the wire rope 7 is adjusted so that the screen 5 is set in the water channel with the gate 2 closed (draining operation), the gate 2 is moved upward. When the gate 2 is opened (during natural flow), the screen 5 is retracted above the water channel as shown in FIG.

In this embodiment, the same operation and effect as those of the first embodiment can be obtained.

A third embodiment of the present invention will be described with reference to FIGS. In the drawings, the portions denoted by the same reference numerals as those in the above-described embodiment show the same or corresponding portions. Reference numeral 9 denotes an automatic dust remover for removing foreign matter adhering to the screen 5 from the screen, and reference numeral 8 denotes a screen foreign matter discharge plate for discharging foreign matter scraped off by the automatic dust remover to the downstream side of the pump. The foreign matter discharge plate 8 is constituted by an inclined plate provided behind (downstream side) the screen 5, and the upper end of the foreign matter discharge plate 8 is connected to the upper end of the screen 5. The surface is configured to be continuous.
The automatic dust remover 9 removes the scraping portion 9a from the screen 5
5 is moved up and down in parallel with the screen surface to remove foreign matter adhering to the screen. In a state where the gate 2 is retracted to the upper part (during natural flow), as shown in FIG. The dust remover 9 is a screen 5
In the state where the gate is set in the waterway 10 (during drainage operation),
As shown in the figure, when the dust remover 9 is operated, the scraping unit
9 a is installed so as to move up and down on the front surface (upstream side) of the screen 5.

At the time of drainage operation, as shown in FIG. 6, the foreign matter scraped up by the automatic dust remover is discharged to the downstream side by the screen rear foreign matter discharge plate 8 inclined to the downstream side.

At the time of gravity flow, as shown in FIG. 5, the scraping portion of the automatic dust remover is moved to the uppermost end, and then the gate 2 integrated with the screen 5 is moved above the water channel 10.

According to the present embodiment, in addition to the effects of the first and second embodiments, the foreign matter picked up during the drainage operation can be automatically discharged to the downstream side, thereby making it unnecessary to treat the foreign matter. .

A fourth embodiment of the present invention will be described with reference to FIGS. 7 to 10. In the drawings, portions denoted by the same reference numerals as those in the above-described embodiment indicate the same or corresponding portions. In this embodiment, the pump 1 'is a horizontal shaft submersible motor pump, and this pump 1' is fixedly installed in the water channel 10. Water channels 10a and 10b are formed on both sides of the pump 1 '.
Water flows through 10a and 10b. Gate (water channel opening / closing means)
2 has a gate shape as shown in FIG.
The a and b are moved up and down to open and close. 7 to 10, the screen and other components are not shown, but the screen 5, the foreign matter discharge plate 8, and the dust remover 9 shown in FIGS. 5 and 6 are provided. Since the configuration is the same, the illustration is omitted.

In this embodiment, only the gate and the screen are moved above the water channel at the time of natural discharge, and the natural discharge is performed by the opening water channels (10a, 10b) on both sides of the pump. During drain operation,
Normal drainage operation is performed by closing the gate 2.

According to this embodiment, in addition to the effects of the first, second, and third embodiments, the capacity of the gate drive unit 3 is reduced by the submersible motor pump 1 '.
Can be reduced by the weight of.

A fifth embodiment of the present invention will be described with reference to FIGS. In the drawings, the portions denoted by the same reference numerals as those in the above-described embodiment indicate the same or corresponding portions. In the present embodiment, in addition to the gate drive section 3a for driving the gate 2, an up / down drive section 3b for vertically moving the pump 1 separately from the upward movement of the gate 2 is provided. The gate 2 is integrally provided with a discharge casing 1a for inserting and installing the pump 1, and the pump 1 is configured to be inserted into and taken out of the discharge casing 1a. 11 to 13
In the figure, as in the case of the fourth embodiment, components such as a screen are not shown.
It is provided with a screen 5, a foreign matter discharge plate 8, and a dust remover 9 shown in the drawing. The configuration of this portion is omitted since it is the same as that of the third embodiment.

In the present embodiment, at the time of spontaneous discharge, the submersible motor pump 1 and the gate 2 are moved above the water channel as shown in FIG.

When switching from the natural discharge to the drainage operation, as shown in FIG. 12, first, the gate 2 is moved downward to close the water passage 10, and then the submersible motor pump 1 is moved downward to move the submerged motor pump 1 inside the two discharge casing 1a. After being inserted and installed in a state as shown in FIG. 13, the drainage operation is started.

According to this embodiment, the same effects as those of the third embodiment can be obtained, and the submersible motor pump 1 and the gate 2 can be made large because the gate drive unit and the vertical drive unit of the pump are separated. The effect that the gate pump equipment having the above can be realized is obtained.

〔The invention's effect〕

According to the gate pump equipment of the present invention, foreign substances can be easily removed from the screen even during the drainage operation by the pump, and in particular, those provided with the foreign substance discharge plate can discharge the scraped foreign substances to the downstream side. There is no need to treat foreign matter.

Further, according to the present invention, since the screen is configured to move up and down in conjunction with the up and down movement of the gate, the screen can be automatically set and retracted to the water channel only by operating the gate, and the screen can be driven. No special device is required. In particular, since the screen can be automatically retracted from the water channel during the natural flow where the pump operation is not required, it is possible to prevent foreign substances from adhering to the screen, and it becomes unnecessary to periodically remove foreign substances from the screen.

Furthermore, in the case of a device equipped with a dust remover and a foreign substance discharge plate, even when the running water is turbid and the position of the screen is not known, the foreign matter attached to the screen can be reliably and automatically removed, and the foreign matter removed by the dust remover is removed. Downstream of the pump,
In other words, since the water can be automatically discharged to the downstream side of the gate, there is an effect that it is not necessary to prevent the accumulation of foreign matter on the screen surface and to treat the foreign matter caught.

[Brief description of the drawings]

1 and 2 are front views showing a first embodiment of the present invention, in which FIG. 1 shows a state during a natural flow (during a natural discharge), and FIG. 2 shows a state during a drainage operation, respectively. FIGS. 3 and 4 are front views showing a second embodiment of the present invention. FIG. 3 is a diagram showing a state of a natural flow, and FIG. 4 is a diagram showing a state of a drainage operation, respectively. FIG. 6 is a front view showing a third embodiment of the present invention, FIG. 5 is a diagram showing a state of a natural flow, FIG. 6 is a diagram showing a state of a drainage operation, and FIGS. FIG. 7 and FIG. 8 are front views and side views, respectively, showing a state of a natural flow, and FIGS. 9 and 10 are front views showing a state of a drainage operation, respectively. Side view, Figures 11-13
FIG. 11 is a front view showing a fifth embodiment of the present invention. FIG. 11 shows a state at the time of natural flow, FIG. 12 shows a state at the time of switching between natural flow and drainage operation, and FIG. 13 shows a state at the time of drainage operation. FIG. 1.1 '... Submersible motor pump, 2 ... Gate, 3,3a ...
... Gate drive, 3b Pump vertical drive, 4 Flap valve, 5 Screen, 6 Constant pulley, 7 Wire rope, 8 Foreign matter discharge plate behind screen, 9
Automatic dust remover, 10,10a, 10b …… water channel, 11,12 …… scaffolding.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ichiro Harada 603, Kandamachi, Tsuchiura-shi, Ibaraki Inside the Tsuchiura Plant, Hitachi, Ltd. (72) Inventor Shigenobu Nagasawa 603, Kandachi-cho, Tsuchiura-shi, Ibaraki Pref. In the Tsuchiura Plant, Hitachi, Ltd. JP-A-52-136401 (JP, A) JP-B-56-5883 (JP, B2)

Claims (15)

(57) [Claims] A gate which is provided to be movable up and down to open and close a water channel, a pump which is attached to the gate and discharges water on one side of the gate to the other side of the gate, and which is provided on an upstream side of the pump, A gate screen set in the waterway in conjunction with the downward movement of the gate; and a flat screen retracted above the waterway in conjunction with the upward movement of the gate. 2. A gate movably provided in the up and down direction to open and close a water channel, a pump attached to the gate to discharge water on one side of the gate to the other side of the gate, and the gate provided on the upstream side of the pump. A screen that moves up and down in conjunction with the vertical movement of the screen, wherein the screen has a lower end located upstream of an upper end thereof when set in a water channel. 3. The gate pump equipment according to claim 1 or 2, further comprising an automatic dust remover for removing foreign matter adhering to the screen. 4. A gate which is provided to be movable up and down and opens and closes a water channel, a pump which is attached to the gate and discharges water on one side of the gate to the other side of the gate, and which is provided on the upstream side of the pump. A screen set in or retracted from the waterway in conjunction with the vertical movement of the gate, a dust remover for removing foreign matter adhering to the screen from the screen, and a foreign matter removed by the dust remover to the downstream side of the pump. Gate pump equipment comprising a foreign substance discharge plate for discharging. 5. The gate pump equipment according to claim 4, wherein the foreign matter discharge plate is an inclined plate provided behind the screen. 6. A gate pump according to claim 5, wherein an upper end of the foreign matter discharge plate is connected to an upper end of the screen, and a surface of the screen is connected to a surface of the foreign matter discharge plate. Facility. 7. A gate for opening and closing a water channel, a pump attached to the gate for discharging water on one side of the gate to the other side of the gate, and provided upstream of the pump and interlocked with the opening and closing operation of the gate. A screen which is set in or retracted from the water channel, a dust remover which removes foreign matter attached to the screen from the screen, and a foreign matter discharge plate which discharges foreign matter removed by the dust remover to the downstream side of the pump. With gate pump equipment. 8. A gate provided so as to be movable up and down so as to open and close a water channel, a pump attached to the gate for discharging water on one side of the gate to the other side of the gate, and integrally attached to the gate. A screen provided upstream of the pump, a dust remover for removing foreign matter from the screen by adhering to the screen when the screen is set in a water channel, and a dust remover attached to the gate and removed by the dust remover. And a foreign matter discharge plate for discharging the separated foreign matter to the downstream side of the pump. 9. The dust remover according to claim 8, wherein the dust remover is installed on a scaffold above the water channel, and moves up and down on the screen surface when the screen is set in the water channel to remove foreign substances adhering to the screen surface. Gate pump equipment characterized by being configured to scrape and discharge onto a foreign substance discharge plate. 10. A waterway opening / closing means for opening / closing a waterway, a pump for discharging water on one side of the waterway opening / closing means to the other side when the waterway opening / closing means is set in the waterway, and an upstream side of the pump. Foreign matter removing means provided in the waterway and retracted from the waterway in conjunction with the opening / closing operation of the waterway opening / closing means, foreign matter scraping means for scraping foreign matter adhering to the foreign matter removing means, and scraping by the scraping means A gate pumping facility comprising: a foreign matter discharging means for discharging the taken foreign matter to a downstream side of the pump. 11. The pump according to claim 10, wherein the pump is fixedly installed in the water channel, and the water channel opening / closing means is a gate that opens and closes a water channel formed on both sides of the pump by moving up and down. Gate pump equipment. 12. A water passage opening / closing means for opening / closing a water passage according to claim 10, wherein said gate opening / closing means is a gate, and a gate drive section for moving said gate up and down is provided. A gate pumping facility, comprising a casing, a pump inserted and removed from the discharge casing, and a vertical drive unit for vertically moving the pump independently of the vertical movement of the gate. . 13. A gate having a pump is set in a waterway, and a screen is set upstream of the gate of the waterway in accordance with the movement of the gate. Thereafter, the pump is driven to move water on the upstream side of the gate to the downstream side of the gate. A method of operating a gate pump facility, comprising: discharging and discharging foreign matter attached to a screen during the movement of the pump to a downstream side of a gate. 14. A method according to claim 13, wherein the pump is set at a predetermined position of the gate after setting the gate in the water channel. 15. A gate pump system comprising a gate, a pump and a screen inclined so that a lower end thereof is on an upstream side is mounted on a scaffold on a waterway so as to be vertically movable, and one scraping portion is parallel to a front surface of the screen. After the dust remover was attached to the scaffold so as to move up and down, the gate pump equipment was set in a water channel, and the scraping part of the dust remover was expanded and contracted to scrape off foreign matter attached to the front of the screen. A method of operating a gate pump facility, comprising discharging foreign matter to a downstream side of a gate, and then moving the scraping part upward to fix the upper part and moving the gate pump facility upward to retract above a water channel.