JP2000204536A - Gate pump - Google Patents

Abstract

(57) [Summary] [Problem] To reduce the thickness of the water stop gate door itself, reduce the overall distance between the surfaces, prevent the energy supply line to the prime mover from being affected by the pump discharge water, Provided is a gate pump in which a pump and a prime mover can be easily attached to and detached from a drainage column, and damage to the pump and the prime mover due to collision of a falling object can be reliably avoided. SOLUTION: A suction / drainage column 4 is constituted by a part of a water stop gate door 1, and a pump 10 is mounted on a mounting portion 9 provided near a lower end suction port 4A. 4 and a connecting cylinder 15
The hydraulic motor 19A is connected to the suction / drainage column 4 through the connector. The pump 10 and the hydraulic motor 19A are restrained from rotating around the axis by the regulating means 21 so that the main shaft 1
The upper end of 1 is connected via a coupling 18 to a rotation output shaft 19A of a prime mover 19 so as to be able to rotate simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a gate pump in which a water stop gate door and a pump are integrated.

[0002]

2. Description of the Related Art In a flood, a gate pump is disposed at the boundary between a tributary and a river in order to prevent the water of the river from flowing back to the tributary and to drain the inland water from the tributary to the river. 4 and 5 are known. This gate pump has a structure in which a submersible motor pump 2 is mounted so as to protrude outside a vertically movable water stop gate door 1. For this reason, imbalance occurs in the suspended weight, and it is difficult to smoothly raise and lower the water stop gate door 1.
In addition, the overall distance L between the surfaces increases, and the slab opening 3
And removal of the submersible motor pump 2 to the water stop gate door body 1 for maintenance and the like cannot be performed only by work from the ground,
The workability of attaching and detaching the submersible motor pump 2 is poor. Further, the underwater motor pump 2 may be damaged by the collision of a falling object.

On the other hand, a gate pump shown in FIGS. 6 and 7 is known. This gate pump has a structure in which a suction / drainage column 4 is built in a water stop gate door 1, and a submersible motor pump 2 in which a prime mover 5 is directly connected is housed in the suction / drainage column 4. Therefore, FIGS. 4 and 5
Since the unbalance of the suspended weight as in the former gate pump described in (1) is eliminated, the water stop gate door 1 can be raised and lowered more smoothly than the former gate pump. In addition, the overall distance L between the surfaces is smaller than that of the former gate pump, so that the slab opening 3 can be reduced, and at the same time, the submersible motor pump 2 is attached to the suction / drainage column 4 and removed for maintenance and the like. Can be easily performed only from the ground, and the workability of attaching and detaching the submersible motor pump 2 is improved. Further, damage to the submersible motor pump 2 due to collision of a falling object can be avoided.

[0004]

That is, in the former gate pump, an imbalance occurs in the suspended weight, making it difficult to smoothly lift and lower the water stop gate door, and the overall distance between the surfaces becomes large, resulting in a slab. The opening becomes large, and the workability of attaching and detaching the submersible motor pump to and from the water stop gate door body is poor. In addition, there is a problem that the submersible motor pump may be damaged by collision of a falling object. On the other hand, the latter gate pump can eliminate all of the problems that have been identified as problems with the former gate pump. However, the thickness of the water stop gate door itself becomes larger than that of the former gate pump, which hinders further reduction of the overall distance between surfaces. In addition, since the submersible motor pump directly connected to the prime mover is housed in the suction / drainage column, there is a disadvantage that the energy supply line to the prime mover is affected by the discharge water. That is, when the prime mover is constituted by an electric motor, the cabtire cable connected to the electric motor is exposed to the discharge water, and when the prime mover is constituted by the hydraulic motor, the hydraulic fluid connected to the hydraulic motor is The pipe is exposed to the discharge water.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a gate pump which can solve all the problems of the former and latter gate pumps.

[0006]

In order to achieve the above object, a gate pump according to the present invention is a gate pump in which a water stop gate door is integrated with a pump. A suction / drainage column, a pump inserted into the suction / drainage column, and mounted on a mounting portion provided at a lower portion of the suction / drainage column, and a shaft above the pump via a connecting member. A motor that restricts rotation around the motor and is inserted into the suction / drainage column while being connected to each other; and a regulation that is provided separately on the motor side and the suction / drainage column side and restricts rotation of the motor around the shaft. Means, wherein the output rotary shaft of the prime mover and the main shaft of the pump are connected to each other so as to be able to rotate simultaneously.

According to the present invention, since the suction / drainage column is constituted by a part of the water stop gate door, the water stop / gate drain door has a suction / drainage column built in the gate stop more than the latter gate pump. By reducing the thickness of the water gate door itself, the overall distance between the surfaces can be reduced. In addition, the pump is mounted on the mounting part provided at the lower part of the suction and drainage column, and the prime mover is connected above this pump and inserted into the suction and drainage column. The energy supply line is not affected by the discharge water.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an embodiment of the present invention in a partial cross section, and FIG. 2 is a vertical sectional side view of FIG. Note that the same or corresponding parts as those in the conventional example of FIGS. 4 to 7 are denoted by the same reference numerals and described.

In FIG. 1 and FIG. 2, a suction / drainage column 4 is formed by a part of the water stop gate door 1. The water stop gate door 1 is incorporated in a guide 6 so as to be able to ascend and descend, and is connected to door elevating means (not shown) via suspension spindles 7 and 7. Therefore, by manually or automatically activating the door lifting / lowering means in the forward or reverse direction, the suspension spindles 7, 7 and the water stop gate door 1 are moved up and down by a predetermined stroke to open and close the gate.

A suction port 4A is opened at a lower end of a suction / drainage column 4 which constitutes a part of the water stop gate door body 1, and a discharge port 4B is opened at a back side of a substantially central portion in a height direction. At the same time, the opening 4C at the upper end is covered with the lid 8 so as to be openable. Suction port 4A in suction / drainage column 4
A mounting portion 9 formed by a flange projecting radially inward is provided near the, and a pump 10 is mounted on the mounting portion 9.

The pump 10 includes a casing 10A, an impeller 10B, and a plurality of guide blades 10C, 10C. The impeller 10B is fixed to a lower end of a main shaft 11 so as to be rotatable at the same time. Bearing case 13 which is rotatably supported by the
Is supported by the casing 10A via a plurality of guide vanes 10C, 10C. Further, in a state where the pump 10 is mounted on the mounting part 9, that is, in a state where the flange 10a of the casing 10A is supported by the mounting part 9, the lower end suction port of the casing 10A is connected to the lower end suction port of the suction / drainage column 4. We are facing 4A.

An upper bearing case 16 is connected to the upper side of the bearing case 13 via a connecting tube 15. An upper bearing 17 attached to the upper bearing case 16 allows the vicinity of the upper end of the main shaft 11 to rotate freely. It is pivoted. Spindle 1
1 is connected to a prime mover 19 via a coupling 18.
Are connected so as to be able to rotate simultaneously.

The prime mover 19 is composed of a hydraulic motor and is mounted and fixed on the mounting surface of the gantry 20. A flange 20A extending radially outward is provided at the lower end of the gantry 20, for example, as shown in FIG. As shown, a plurality of notches 21A, 21A provided in the flange 20A at circumferential intervals.
With the plurality of notches 21A, 21A so as to be engageable.
A plurality of vertically extending ribs 21B, 21B protruding from the inner surface of the drainage column 4 constitute a restricting means 21 for restraining the motor 19 from rotating around its axis.

A flange 20A provided at the lower end of the gantry 20
Is integrally fastened by a fastening member (not shown) including a plurality of bolts and nuts to a radially outwardly extending flange 23 provided at the upper end of the connecting cylinder 15 with the annular member 22 interposed therebetween. The upper bearing case 16 is integrally fastened by a fastening member (not shown) including a plurality of bolts and nuts. As a result, the rotation of the motor 19, the connecting cylinder 15, the upper bearing case 16, the bearing case 13, the casing 10A, and the like is restricted by the restricting means 21. 2 in the figure
4 denotes a flap valve, 25A denotes a pressure oil supply pipe, and 25B denotes a pressure oil return pipe.

In the gate pump configured as described above, when the water stop gate door 1 is raised by a door lifting means (not shown) to open the gate, the internal water on the tributary side flows down to the river. When the gate is closed by lowering the water stop gate door 1 by the door lifting means, it is possible to prevent the water of the river from flowing back to the tributary side in the event of a flood, etc. in cooperation with the closing of the flap valve 24. In addition, by operating the pump 10, the internal water on the tributary side can be drained into a river or the like, and the increase in water on the tributary side can be suppressed.

According to the present invention, since the suction / drainage column 4 is constituted by a part of the water stop gate door 1, the water stop / gate drain door 1 described with reference to FIGS. The thickness of the water stop gate door 1 itself can be made smaller than that of the latter gate pump having the column 4 built in, and the overall distance L between the surfaces can be reduced. Further, the pump 10 is mounted on a mounting portion 9 provided at a lower portion in the suction / drainage column 4.
0, ie, above the discharge port 4A of the suction / drainage column 4, the motor 19 is connected and inserted into the suction / drainage column 4, so that the pressure oil supply pipe 25A and the pressure oil return pipe 25B Can be prevented from being affected by the discharge water.

Of course, like the latter gate pump, FIG.
Since the suspended weight imbalance as in the former gate pump described with reference to FIG. 5 is eliminated, the water shutoff gate door 1 can be raised and lowered smoothly. In addition, since the pump 10 and the motor 19 can be easily removed from the suction / drainage column 4 constituting a part of the water stop gate door body 1 when the pump 10 and the prime mover 19 are mounted, maintenance and the like can be easily performed only from the ground. The workability of attaching and detaching the pump 10 and the prime mover 19 is improved. Further, damage to the pump 10 and the prime mover 19 due to collision of a falling object can be reliably avoided.

In the above-described embodiment, one suction / drainage column 4 is constituted by a part of one water stop gate door 1, and the suction / drainage column 4 is provided with the pump 10 and the prime mover 19.
Is described, but a plurality of suction / drainage columns 4 are constituted by a part of one water stop gate door 1,
A structure in which the pump 10 and the prime mover 19 are inserted into each of the plurality of suction / drainage columns 4 may be used.

A motor 19 comprising a hydraulic motor
However, a prime mover 19 composed of an electric motor (electric motor) may be used.

[0020]

As described above, according to the present invention, since the intake / drainage column is formed by a part of the water stop gate door, the gate having the water intake / drainage column built in the water stop gate door is provided. The thickness of the water stop gate door itself is made thinner than the pump,
The overall distance between surfaces can be reduced. In addition, the pump is mounted on the mounting section provided at the bottom of the suction / drainage column,
Since the prime mover is connected above the pump and inserted into the suction / drain column, the energy supply line to the prime mover is not affected by the discharge water. Furthermore, since the pump and the prime mover can be easily removed from the suction / drainage column that constitutes a part of the water stop gate door body when the pump and the prime mover are installed and removed from the ground only by work from the ground, the pump and the prime mover can be easily removed. The workability of attaching and detaching is improved. In addition, damage to the pump and the prime mover due to collision of the falling object can be reliably avoided.

[Brief description of the drawings]

FIG. 1 is a front view showing a partial cross section of an embodiment of the present invention.

FIG. 2 is a vertical sectional side view of FIG.

FIG. 3 is an enlarged sectional view taken along line AA of FIG. 2 showing an example of a restricting means.

FIG. 4 is a front view of the first conventional example.

FIG. 5 is a vertical sectional side view of FIG. 4;

FIG. 6 is a front view of a second conventional example.

FIG. 7 is a vertical sectional side view of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 water stop gate door 4 suction / drainage column 10 pump 11 pump main shaft 15 connecting cylinder (connecting member) 19 prime mover 19A rotary output shaft of prime mover 21 regulating means 6E main shaft

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Takaaki Takami 1-1-1, Nakamiya Oike, Hirakata City, Osaka Prefecture Inside Kubota Hirakata Plant Co., Ltd. (72) Katsumi Hayashi 1-1-1, Nakamiya Oike, Hirakata City, Osaka Prefecture No. 1 Inside Kubota Hirakata Plant (72) Inventor Yasuhiro Murayama 1-1-1, Nakamiya Oike, Hirakata City, Osaka Prefecture F-term (reference) 2D019 AA41 AA43

Claims (1)

[Claims] 1. A gate pump in which a water stop gate door and a pump are integrated, a suction / drainage column constituted by a part of the water stop gate door, and a suction / drain column inserted into the suction / drain column. The pump mounted on the mounting portion provided at the lower part of the drainage column and the rotation of the pump around the axis on the upper side of the pump via a connecting member are connected to each other and inserted into the suction / drainage column. A prime mover, and regulating means provided separately on the prime mover side and the suction / drainage column side to restrain rotation around the axis of the prime mover, wherein the output rotary shaft of the prime mover and the main shaft of the pump are simultaneously rotatable. A gate pump characterized by being connected to each other.