JP3818376B2 - Pump gate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a pump gate that performs forced drainage in a closed state by attaching a submersible pump to a gate door body of a water stop gate.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, pump gates are well known in which a submersible pump is disposed on a gate door body that is supported by an irrigation or intake sluice gate so as to be movable up and down, and is moved up and down together with the gate door body. And the water stop gate which incorporated the pump in the waterway which connects two rivers etc. in the planar inversion is well-known as it describes in Unexamined-Japanese-Patent No. 3-140516, for example. The pump gate for switching the direction of pumping, for example, pumps water from the river side to the tributary river side for irrigation, etc., and in case of heavy rain, the gate is inverted and drained from the tributary river side to the river side.
[0003]
[Problems to be solved by the invention]
The conventional pump gate can switch the pumping direction by rotating the gate door body, but the rotating device becomes large-scale, and its operation is difficult because it rotates in the water channel. is there. It was necessary to secure a space, and it was difficult to seal the side and bottom surfaces of the gate door body. The present invention provides a pump gate that rotates a submersible pump installed in the gate door body without rotating the gate door body, and does not require a space and switches the pumping direction with a simple operation. Objective.
[0004]
[Means for Solving the Problems]
In order to achieve the above-mentioned purpose, in the pump gate for disposing the gate door body to be movable up and down on the water stop gate, supporting the submersible pump to the gate door body, and performing forced drainage in the closed state of the water stop gate, A pair of inlets and outlets are opened on the river side and tributary river side of the water channel in the gate door body, and a submersible pump is rotatably disposed inside the gate door body, and the inlet and outlet of the submersible pump are arranged. It is possible to change the pumping direction by rotating the submersible pump inside the gate door with a simple operation. Become. Unlike the prior art, it is not necessary to secure a space for rotating the gate door body, and the gate door body and the submersible pump can be easily sealed.
[0005]
The specific driving means of the submersible pump is to place the driving machine on the gate door body, connect the submersible pump to the rotating shaft of the hanging driving machine, and rotate the submersible pump inside the gate door body. Rotating operation of the submersible pump is easy, and there is no worry about sealing the gate door body. And the rotation control means of the submersible pump projects a separator for switching the pumping direction from the submersible pump, and a position detection device connected to the drive unit is disposed inside the gate door body, and this position detection device is connected to the separator. The rotation angle of the submersible pump is detected to detect the rotation angle of the submersible pump and the operation of the driving machine is stopped. The submersible pump suction is detected by detecting the rotation of the submersible pump inside the gate door body. The outlet and outlet are inverted 180 degrees to switch the pumping direction between the river side and the tributary river side. The rotating means of the small submersible pump may rotate the submersible pump by attaching a handle to a rotating shaft connected to the submersible pump instead of the drive unit. In addition, a flap valve is provided at the discharge port opened in the gate door body to prevent backflow when the submersible pump is stopped.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The pump gate according to the present invention is configured as described above, and when pumping water from the river side to the tributary river side for irrigation, the pump gate is forcedly pumped from the river to the tributary river in the closed state, and the upstream side The submersible pump is stopped when the water level in the waterway is lowered or the pumping is completed. When it is necessary to drain water from a tributary river such as heavy rain to the mainstream river, the submersible pump is rotated 180 degrees with the drive, and the rotation angle of the submersible pump is detected to stop the operation of the drive. If the suction port of the submersible pump is moved to the discharge port of the gate door body and the position of the discharge port of the submersible pump is moved to the inlet and outlet of the gate door body, drainage can be started. Change the direction of pumping on the tributary river side. It is possible to change the pumping direction by rotating the submersible pump inside the gate door with a simple operation, so there is no need to secure a space as in the prior art, and the gate door and submersible pump can be easily sealed. It becomes.
[0007]
【Example】
An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a pump gate installed in a water channel. A water stop gate 1 is installed between a river and a tributary river. The gate door body 2 is sandwiched between the gates 3 and 3. A driving device 5 is mounted on the bridge 4 above the gate 3, the gate door body 2 is connected to the pin rack bars 6, 6 suspended from the driving device 5, and the gate door body 2 is gated by the driving device 5. 3 and 3 can be moved up and down. FIG. 2 is a longitudinal sectional view of a gate door body of the pump gate. The gate door body 2 is provided with an inner cylinder casing 7 having an upper end opened, and an upper portion connected to the upper and lower ends of the inner cylinder casing 7. A support plate 8 and a lower support plate 9 are fixed to the gate door body 2. The gate door body 2 includes a pair of inflow ports 11a and 11b that open in a direction of 180 degrees into the gate door body 2 on the river side 10a and the tributary river side 10b of the water channel 10, and a pair of the upper side of the inflow ports 11a and 11b. The discharge ports 12a and 12b are connected to each other. The inlets 11a and 11b and the discharge ports 12a and 12b are also opened on the inner peripheral surface of the inner casing 7 provided inside the gate door body 2, and a flap valve 13a is provided at the opening front end of the discharge ports 12a and 12b. , 13b are arranged.
[0008]
As shown in FIG. 2, a circular sealing plate-like seal plate 14 is concentric with the inner cylinder casing 7 inside the inner cylinder casing 7 in the vicinity of the lower ends of the pair of discharge ports 12 a and 12 b provided in the gate door body 2. It is formed in a shape. A lower bearing 15 is provided at the center of the lower support plate 9 of the inner cylinder casing 7. FIG. 3 is a longitudinal sectional view of the submersible pump disposed in the gate door body. The pump casing 17 of the submersible pump 16 disposed inside the gate door body 2 is formed in a cylindrical shape. An underwater motor 19 is supported on a guide vane 18 connected to the inner peripheral surface. The drive shaft 20 that hangs down from the submersible motor 19 is sealed with a shaft seal 21, and an impeller 22 is fixed to the tip of the drive shaft 20. A suction port 23 of the submersible pump 16 is opened on the lower side wall of the pump casing 17, and a discharge port 24 of the submersible pump 16 is opened on the upper side wall opposite to the suction port 23 at 180 degrees.
[0009]
FIG. 4 is a longitudinal sectional view in which the submersible pump is incorporated in the gate door body. The submersible pump 16 is disposed inside the gate door body 2, and the support shaft on the bottom surface of the submersible pump 16 shown in FIG. 25 is pivotally supported on a lower bearing 15 provided on the lower support plate 9 of the inner casing 7 shown in FIG. A gantry 26 is supported on the upper support plate 8 of the inner cylinder casing 7 of the gate door body 2, and a rotary shaft 28 of a driving machine 27 placed on the gantry 26 is connected to the top of the submersible pump 16. The driving machine 27 is operated so that the submersible pump 16 can be rotated inside the inner cylinder casing 7 of the gate door body 2.
[0010]
The pair of inlets 11a and 11b provided in the gate door 2 and the suction port 23 of the submersible pump 16 have substantially the same diameter, and one of the pair of inlets 11a and 11b and the suction port 23 of the submersible pump 16 are joined together. To seal. It should be noted that a water sealing seal packing may be attached to the inner end faces of the inflow ports 11a and 11b provided in the inner cylinder casing 7, or a water sealing seal packing may be attached to the suction port 23 of the submersible pump 16. Even so, the water can be sealed on the suction side. The discharge port 24 of the submersible pump 16 has a smaller diameter than the discharge ports 12 a and 12 b of the gate door 2, and the tip of the discharge port 24 of the submersible pump 16 is provided inside the inner casing 7. The discharge side is sealed with a packing 29 which is brought into sliding contact with the upper end of the plate 14 and stuck to the annular sealing plate-like seal plate 14.
[0011]
FIG. 5 is a cross-sectional view of a gate door body provided with a submersible pump. A pair of separators 30 and 30 for switching the pumping direction are provided on both side walls of a pump casing 17 of the submersible pump 16, and the gate The door 2 is disposed at the height of the discharge ports 12a and 12b. A position detection device 31 such as a limit switch or a proximity switch is provided on the inner cylinder casing 7 of the gate door body 2 at the rotation position of the separator 30, and the submersible pump 16 is rotated by operating the drive unit 27. Occasionally, a 180 degree rotation position is detected and stopped, and pumping to the river side 10a and the tributary river side 10b is switched. It is possible to switch the pumping direction by rotating the submersible pump 16 inside the gate door body 2 with a simple operation. There is no need to secure a space for rotating the gate door 2 as in the prior art.
[0012]
FIG. 6 is a side view of the main part of the submersible pump provided with a separator. The lower end inside the separator 30 protruding from the side wall of the pump casing 17 is cut out, and the separator 30 is attached to the seal plate 14 provided in the inner cylinder casing 7. In the water stop gate 1 for pumping water from the river side 10a of the water channel 10 to the tributary river side 10b shown in FIG. 4, the water flow ejected from the discharge port 24 of the submersible pump 16 is shown in FIG. Is prevented from flowing out to the discharge port 12a of the inner cylinder casing 7 on the suction port 23 side of the submersible pump 16 through the inner peripheral surface of the inner cylinder casing 7. Sealing on the discharge side of the gate door 2 and the submersible pump 16 is also facilitated. As shown in FIG. 4, when the water stop gate 1 is closed and water is pumped from the river side 10a of the water channel 10 to the tributary river side 10b, the submersible pump 16 is connected to the inlet 11a of the door 2 on the river side 10a. When the submersible motor 19 of the submersible pump 16 is operated with the suction port 23 facing each other, the water on the river side 10a flows into the inlet 23 of the submersible pump 16 from the inlet 11a of the inner casing 7 and the submersible pump 16 It discharges from the discharge port 24 to the discharge port 12b of the inner cylinder casing 7, and forcibly pumps water to the tributary river side 10b.
[0013]
FIG. 7 is a vertical side view of the pump gate showing the state of draining from the tributary river side to the river side. When it is necessary to drain from the tributary river side 10b to the river side 10a, the submersible pump 16 is driven by the drive unit 27. The position of the suction port 23 and the discharge port 24 of the submersible pump 16 is moved to the suction side and the discharge side of the gate door 2 to the position necessary for drainage, and the position of the separator 30 is detected at a position where the submersible pump 16 is rotated 180 degrees. The drive device 27 is stopped by contacting the device 31. When the submersible motor 19 of the submersible pump 16 is actuated, the water on the tributary river side 10b flows into the suction port 23 of the submersible pump 16 from the inlet 11b of the gate door body 2, and from the outlet 24 of the submersible pump 16 to the gate door body. The water can be discharged to the second discharge port 12a and drained from the tributary river side 10b to the river side 10a. Note that the rotating means of the small submersible pump 16 may rotate the submersible pump 16 by attaching the handle 32 to the rotary shaft 28 connected to the submersible pump 16 instead of the drive unit.
[0014]
【The invention's effect】
The present invention is configured as described above, and the pumping direction can be switched by a simple operation by rotating a submersible pump provided in the gate door body without rotating the gate door body. That is, the conventional pump gate has a large gate door rotating device, and it is difficult to rotate the gate door body in the water channel, and the gate door body is difficult to seal. The submersible pump is rotatably arranged inside the gate door body, and a pair of inlets and outlets are opened on the river side of the water channel and the tributary river side in the gate door body. Since the discharge port can be connected and switched, it is possible to switch the pumping direction by rotating the submersible pump inside the door body with a simple operation. Unlike the prior art, it is not necessary to secure a space for rotating the gate door body, and the gate door body and the submersible pump can be easily sealed.
[0015]
The submersible pump drive means connects the submersible pump to the rotating shaft of the drive unit mounted on the gate door body, and the submersible pump inside the gate door body can be rotated. There is no worry about the gate door seal. Then, the rotation control means of the submersible pump is provided with a position detection device connected to the drive unit on the separator for switching the pumping direction that protrudes from the submersible pump, and detects the rotation angle of the submersible pump. The operation of the machine is stopped, and the suction and discharge ports of the submersible pump can be reversed 180 degrees to switch the pumping direction between the river side and the tributary river side. In the case of a small submersible pump, the submersible pump may be rotated by attaching a handle to a rotating shaft connected to the submersible pump. Moreover, a flap valve is provided in the discharge port opened to the gate door body, and backflow can be prevented when the submersible pump is stopped.
[Brief description of the drawings]
FIG. 1 is a front view of a pump gate according to the present invention.
FIG. 2 is a longitudinal sectional view of the gate door body of the pump gate.
FIG. 3 is a longitudinal sectional view of a submersible pump disposed on the gate door body.
FIG. 4 is also a longitudinal sectional view in which an underwater pump is incorporated in a gate door body.
FIG. 5 is a cross-sectional view of a gate door body provided with a submersible pump.
FIG. 6 is a side view of an essential part of a submersible pump provided with a separator, similarly.
FIG. 7 is a vertical side view of the pump gate showing a state in which water is drained from the tributary river side to the river side.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Water stop gate 2 Gate door body 10 Water channel 10a River side 10b Tributary river side 11a, 11b Inlet 12a, 12b Discharge port 13a, 13b Flap valve 16 Submersible pump 23 Suction port 24 Discharge port 27 Driver 28 Rotating shaft 30 Separator 31 Position detection device 32 Handle

Claims (5)

A gate door body (2) is disposed on the water stop gate (1) so as to be movable up and down, and the submersible pump (16) is supported on the gate door body (2), and the water stop gate (1) is forcibly closed. In the pump gate for draining, a pair of inflow ports (11a, 11b) and discharge ports (12a, 12b) are provided on the river side (10a) of the water channel (10) and the branch river side (10b) of the gate door (2). While opening each, the submersible pump (16) is rotatably arranged inside the gate door body (2), and the suction port (23) and the discharge port (24) of the submersible pump (16) are connected to the gate door body ( 2. A pump gate characterized in that the connection can be switched between the inlet (11a, 11b) and the outlet (12a, 12b) provided in 2). The drive machine (27) is placed on the gate door body (2), and the submersible pump (16) is connected to the rotating shaft (28) of the suspended drive machine (27), so that the inside of the gate door body (2). The pump gate according to claim 1, characterized in that the submersible pump (16) is rotatable. A separator (30) for switching the pumping direction is projected from the submersible pump (16), and a position detection device (31) connected to the drive machine (27) is disposed inside the gate door body (2). The position detection device (31) is disposed opposite to the rotation position of the separator (30) to detect the rotation angle of the submersible pump (16) and stop the operation of the drive machine (27). Item 3. The pump gate according to Item 2. 3. The submersible pump (16) is rotated by attaching a handle (32) to a rotating shaft (28) connected to the submersible pump (16) instead of the driving machine (27). Pump gate as described in. The pump gate according to any one of claims 1 to 4, wherein flap valves (13a, 13b) are provided at the discharge ports (12a, 12b) opened in the gate door body (2).

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