JP2515892B2 - Gate pump device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a gate pump device which has a pump function of preventing intrusion of external water and removing internal water to the external water side.

[Prior Art] Conventional gate pump devices include those described in Japanese Patent Publication No. 56-5883 and Japanese Patent Publication No. 52-136401.

[Problems to be Solved by the Invention]

In the former one of the above-mentioned conventional techniques, since the pump is installed in the vertical direction, the pump flow path formed in the door body (gate) becomes complicated and the internal structure of the door body becomes complicated.
Further, the suction port and the discharge port must be opened toward the mainstream side (the water channel direction), and the thickness of the door cannot be reduced. Further, the pump occupies the vertical space of the door body, making it difficult to provide a plurality of pumps in the vertical direction of the door body.

In the latter of the above-mentioned conventional techniques, since the pumps are installed horizontally, it is possible to install multiple pumps in the vertical direction of the door body, but the thickness of the door body is very large. As a result, the door body becomes large in size, and a space above the door body provided for moving the door body up and down must be taken large, which results in a large construction cost.

Further, it is also considered to install the pump P on the side surface of the door body 1 in the vertical direction as shown in FIG. 5, but in this case, both the pump size and the door body width size are considered as the installation space. Must. Moreover, in order to improve the movement of the door body when opening and closing the gate, it is necessary to balance the entire door body, and the width of the door body must be increased more than necessary.

An object of the present invention is to obtain a gate pump device that can reduce the width of the door body and can reduce the retreat space of the gate provided above the door body.

Another object of the present invention is to obtain a gate pump device having a small size and a simple structure.

Still another object of the present invention is to obtain a gate pump device in which a plurality of pumps can be easily attached in the width direction of the door body and the water level direction thereof.

Another object of the present invention is to obtain a gate pump device having a well-balanced structure.

[Means for solving the problem]

In order to achieve the above object, the present invention is a gate pump device capable of preventing outside water from entering and discharging the inside water to the outside water side. In the body, provide multiple through holes in the water level direction of the water channel,
Axial pump impellers for discharging internal water to the external water side when the doors are opened are rotatably arranged in the respective through holes, and rotors of electric motors are integrally attached to the outer peripheral portions of the respective axial impellers. At the same time, the stator of the electric motor is attached to the door body on the outer peripheral side of the rotor facing the rotor, and the axial flow pump impellers are driven by the electric motors including the rotor and the stator. It is something that is done.

[Action]

According to the above invention, the rotor forming a part of the electric motor is attached to the outer peripheral portion of the pump impeller, and the stator forming the other part of the electric motor is attached to the outer peripheral side of the rotor. Since the electric motor is integrated with the pump by the stator and the stator, a pump device with an extremely small axial dimension can be obtained, and by incorporating this into the door body, the gate pump device is compact and has a simple structure. Is obtained.

Further, by mounting the pump device integrated with the above electric motor as an axial flow pump in the horizontal direction, the flow path becomes substantially horizontal, the structure is simplified, and the width of the door body including the pump can be reduced. Therefore, the retreat space of the gate provided for moving the gate up and down can be reduced. further,
Since the space occupied by the pumps in the water level direction is small, it is possible to easily attach a plurality of pumps not only in the width direction of the door body but also in the water level direction.

Further, by configuring the center of gravity of the pump and the electric motor to be near the central portion in the thickness direction of the door body, it is possible to obtain a gate pump device having a good weight balance without making the door body thicker than necessary.

〔Example〕

In order to reduce the size of the gate pump device and provide a well-balanced structure, the present invention installs an electric motor rotor that can rotate in water together with the impeller on the outer circumference of the pump impeller, and installs an electric motor stator on the outer circumference thereof. The pump and electric motor are integrated into the door (gate).

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

FIG. 1 and FIG. 2 show a gate pump device in which a pump and an electric motor are integrated inside a gate (door body) and a total of four units are installed, two rows in the gate water level direction and two rows in the gate width direction. .

A horizontal through hole 1a is formed in the gate (door body) 1, guide blades 5 and 5'are provided in the through hole 1a, and the bearings 7 and 8 are connected to the gate through the guide blades 5 and 5 '. Supported by 1. Reference numeral 4 denotes an axial flow type pump impeller provided in the through hole 1a, and this impeller is rotatably supported by the bearings 7 and 8 via a rotary shaft 12. A cylindrical band 14 that forms a flow path by forming a surface that is continuous with the inner surface of the through hole is attached to the outer peripheral portion of the impeller 4, and the outer peripheral surface of this band 14 is also used for the motor (electric motor) 9a. The rotor 9 for forming a part is fixed. Further, a stator 11 forming another part of the motor 9a is attached to the gate 1 on the outer peripheral side of the rotor 9 via a narrow gap. In addition, 10 is a winding wire on the side of the stator 11, 2 is a flap valve provided at the end of the through hole 1a on the discharge side of the axial flow impeller 4, and prevents outside water from flowing back to the inside water side when the door is closed. To do. Further, 6 is a mechanical seal. In this embodiment, a motor (electric motor) 9a is formed by the rotor 9, the winding 10 and the stator 11 which rotate integrally with the impeller, and the motor 9a is integrally provided on the outer peripheral portion of the pump impeller. , The axial dimension of the pump device P including the motor can be made extremely small.

The gate pump device opens and closes the gate 1 when the water level on the downstream side (outside water) becomes higher than that on the upstream side (inside water).
To start pump operation. When the electric motor rotor 9 rotates, the pump impeller 4 also rotates at the same time and drains water from the upstream side to the downstream side through the flap valve 2.

According to the present embodiment, since the axial pump integrated with the electric motor is attached inside the gate 1, there is an effect that the gate pump device can be downsized and simplified. In this embodiment, the pump devices are provided in two rows in the water level direction of the gate 1. In this case, the motor 9a of the upper pump can have a smaller capacity than the motor of the lower pump. When the water level is low, the pump installed at the bottom drains water, and when the water level rises, the pump installed at the top is also operated to drain water.

FIG. 3 is an enlarged view of only one of the four pumps shown in FIGS. 1 and 2, and when the pump impeller 4 rotates, it is discharged to the inside water and outside water side, and the flap The valve 6 opens as shown. When the rotation of the pump impeller 4 is stopped, the flap valve returns to the state shown in FIG. 1 to prevent the outside water from flowing back to the inside water side.

FIG. 4 is a view showing a state in which the gate pump device shown in FIGS. 1 to 3 is installed in a waterway such as a river. In the figure, 15 is a screen provided on the inner water (upstream) side of the gate 1. As is apparent from this figure, both the inner water side and the outer water side surface of the gate 1 are formed in a flat shape without a protrusion, and the thickness of the gate is also extremely thin. This is because the motor is provided on the outer peripheral side of the pump impeller to shorten the axial length of the axial pump and set the gate thickness to be the same as or slightly larger than the axial length of the axial pump. With this structure, as can be seen from the comparison with the conventional device shown in FIG. 5, the retreat space 16 above the gate required to move the gate up and down can be greatly reduced.

By installing the above-mentioned axial flow pump in the gate, it is not necessary to install complicated pipes as compared with the conventional case where the pump is installed inside the gate, and the gate side surface as shown in FIG. Since the size of the pump can be made smaller than that in the conventional technique in which the pump is installed in the gate pump, the gate pump equipment can be downsized and simplified.

According to the above-described embodiment of the present invention, the size of the pump required when the pump is installed on the side surface of the gate is not required, and the device can be thinned accordingly. Further, according to the present invention,
It is not necessary to assemble a complicated pipe such as a curved pipe, and the gate pump device can be downsized and simplified.

Further, since the horizontal axis pump can be easily installed at the lower position of the gate, it can be operated at a low water level and the pump performance can be improved.

Also, by installing a horizontal axis pump and downsizing,
Since it is possible to install pumps in the direction of the water level of the gate (vertical direction), you can install multiple pumps that can drain the same amount of water without widening the gate width,
Effective use of gate space can be achieved.

Furthermore, when multiple pumps are installed in the water level direction,
The pump installed at the upper part of the gate can have a lower pump head than the pump installed at the lower part of the gate, so that the electric capacity of the upper pump can be made smaller than the electric capacity of the lower pump, and energy saving operation can be performed.

〔The invention's effect〕

According to the present invention, since the pump device having a small axial dimension that is integrated with the pump is incorporated in the door body, there is an effect that a gate pump device having a small size and a simple structure can be obtained. Further, according to the gate pump device of the present invention,
The width of the door including the pump is reduced, and therefore, the retreat space of the gate for moving the gate up and down can be reduced, and the installation space of the gate pump device can be reduced. Further, since the space occupied by one pump in the water level direction is small, it is possible to easily mount a plurality of pumps in the width direction and the water level direction of the door body. Further, it becomes easy to configure the center of gravity of the pump and the electric motor to be near the central portion in the thickness direction of the door body, and it is possible to obtain a gate pump device with good weight balance without making the door body thicker than necessary. There is also an effect.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is a side view of the gate pump device of FIG. 1, and FIG. 3 is only one of the pumps shown in FIGS. FIG. 4 is an enlarged vertical sectional view, FIG. 4 is a vertical sectional view showing an example in which the gate pump device shown in FIG. 1 is installed in a water channel, and FIG. 5 is a vertical sectional view showing an example of a conventional gate pump device. It is a figure. DESCRIPTION OF SYMBOLS 1 ... Gate (door body), 2 ... Flap valve (backflow prevention means), 3 ... Opening / closing device, 4 ... Pump impeller, 5,5 '... Guide blade, 6 ... Mechanical seal, 7,8 ... Bearing, 9 ... Rotor, 9a ... Electric motor, 10 ... Winding, 11 ... Stator, 12 ... Shaft, P,
…pump.

Claims (4)

(57) [Claims] 1. A gate pump device capable of preventing outside water from entering and removing it to the outside water side, wherein a plurality of door pumps are installed in a water channel so as to prevent the outside water from entering and to move up and down in the water channel. Through holes are provided, and axial flow pump impellers for discharging the internal water to the outside water side are rotatably installed in the respective through holes when the door is opened, and an electric motor is integrally provided on the outer peripheral portion of each axial flow impeller. While installing the rotor of each,
The stators of the electric motors are attached to the doors on the outer peripheral side of the rotors facing the rotors, and the electric motors including the rotors and the stators drive the axial pump impellers. A gate pump device characterized in that 2. The axial pump impellers and the electric motors are installed on the door body so that the center of gravity of the axial pump impellers and the electric motors are near the central portion in the thickness direction of the door body. The gate pump device according to claim 1, wherein: 3. The gate pump device according to claim 1, wherein a backflow preventing means is provided in the vicinity of the outer water side end of each of the through holes. 4. The capacity of an electric motor for driving each of the axial-flow pump impellers decreases from the lower part to the upper part in the water level direction of the water channel, according to any one of claims 1 to 3. Gate pump device.