JP2002242875A - Gate pump facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a facility to prevent biting of garbage to a gate pump by reducing opening and closing frequency of a gate by constituting the gate pump so as to be free to naturally drain. SOLUTION: This gate pump facility is constituted of a horizontal underwater pump 8 set on the gate 4 of a drain sluice 1 and free to naturally or forcibly drain, and a floating type check valve 11 provided on the discharge port side of this horizontal underwater pump 8, to oscillate by having an opening and closing fulcrum 16 on the water bottom side, to be in an open state at the time of natural draining, to make the inside of the pump free to pass flowing water, to be in a closed state at the time of ceasing driving of the horizontal underwater pump at the time of forcible draining and to prevent passing of the flowing water in the inside of the pump. Additionally, the check valve is constituted of a miter type check valve 33 to prevent passing of the flowing water in the pump by making the inside of the pump free to pass the flowing water in the open state during natural draining and being in the closed state during ceasing driving of the horizontal underwater pump during forcible draining by being provided on the discharge port side of the horizontal underwater pump 8 and oscillating with an opening and closing fulcrums 36 left and right.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate pump installed at a drain gutter such as a river or a waterway. More specifically, the present invention relates to a gate pump facility that allows natural drainage through a pump body.

[0002]

2. Description of the Related Art A drainage gate provided at a boundary between the sea and a river or a boundary between a main river and a tributary is normally opened to allow upstream water having a high water level to flow downstream. When the water level of the main river, which is the downstream side, rises and flows backward, it must be closed. Normally, the water level on the tributary side (inland water side) is higher than the water level on the main river side (outside water side), and natural drainage is performed from the tributary side to the main river side.

On the other hand, when the water level on the main river side is higher than the water level on the tributary side and the water flows backward, the gate of the drain gutter is closed.
Water is forcibly drained by a pump. Conventionally, natural drainage is performed by opening a gate, and in the case of backflow (when the inland water level exceeds a specified level), forced drainage is performed using a pump. If the water level difference between the main river and the tributary alternates frequently, for example, in the case of rainfall, the difference between the water level on the main river and the water on the tributary becomes unstable. Gate opening and closing operations are repeated each time.

As described above, the difference in water level between the main river side and the tributary side is delicate, and the height is alternately repeated. Even in an unstable state where the height difference is not constant, the gate is usually opened when the water level on the tributary side becomes high. Natural drainage is performed, and when the water level on the main river side rises, the gate is closed and forced drainage is performed. However, in such an unstable state, there are many opening and closing operations that must be performed frequently, which is an operational problem.

Conventionally, in a gate pump, as a check valve of the drainage pump, when the drainage operation is stopped,
It is provided so as not to flow backward from the discharge port. However, this check valve does not consider natural drainage.
At present, flap valves and check valves are used.
That is, although the flap valve has a structure in which the flap valve has a support shaft at the top and automatically opens and closes at a water level difference, the opening degree is not sufficient because the valve body is round and the water pressure due to the water level difference applied to the valve body is small. In addition, since dust mainly flows near the water surface, there is a disadvantage that the dust easily bites into the spindle. The check valve is a check valve and has almost the same structure as the flap valve.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above background, and achieves the following objects.
SUMMARY OF THE INVENTION An object of the present invention is to provide a gate pump facility in which a gate pump is configured to be able to drain naturally and the frequency of opening and closing a gate of a drain gutter is reduced. Another object of the present invention is to provide a gate pump equipment provided with a check valve for preventing a dust from being caught in a gate pump.

[0007]

The present invention solves the above-mentioned problems by the following means. That is, the gate pump equipment of the present invention is a pump equipment installed at a drain gutter gate of a water channel having a drain port, and is provided at a gate of the drain gutter with natural drainage or a horizontal submersible pump capable of forced drainage. , The horizontal submersible pump is provided at the discharge port side and swings with an open / close fulcrum at the bottom of the water, and is opened at the time of natural drainage, allowing flowing water to pass through the horizontal submersible pump, and the horizontal type at the time of forced drainage. When the operation of the submersible pump is stopped, the submersible pump is closed and includes a check valve having a floating type valve element for preventing the passage of flowing water in the horizontal submersible pump and a floating valve seat abutting on the valve element. ing.

Further, another gate pump equipment of the present invention includes:
A pump equipment installed in the drainage gutter gate of waterways with water outlet, wherein is installed in the gate of the gutter gates natural drainage or a forced drainable horizontal submersible pump, the discharge port side of _this horizontal submersible pump It is provided with an opening and closing fulcrum on the left and right and swings, becomes open at the time of natural drainage, allows flowing water to pass through the inside of the horizontal submersible pump, and is closed at the time of suspension of operation of the horizontal submersible pump at the time of forced drainage. And a check valve for preventing the passage of flowing water in the horizontal submersible pump.

It is preferable that the check valve of the other gate pump equipment comprises a valve body having a swing shaft whose opening and closing fulcrum is arranged vertically, and a valve seat abutting on the valve body. Further, it is preferable that the axis of the swing shaft is slightly inclined from the vertical direction, and swings in the valve seat direction by the weight of the valve body.

Further, the valve may be swung in the direction of the valve seat by a spring force. Further, a structure combining these two may be used.

Further, in both gate pump facilities, it is preferable that a discharge pipe member is provided between the horizontal submersible pump and the check valve. Further, in both gate pump facilities, the horizontal submersible pump is preferably provided on a door that is driven up and down by the opening and closing device of the drain gutter.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] FIG. 1 is a sectional view showing the entire configuration of a gate pump equipment according to the present invention. The right side of the figure is the drain gutter 1
The gate pump (registered trademark) 3 is disposed on a gate 2 made of concrete. An opening / closing device 5 that moves the door 4 up and down to open and close the water gate is provided above the gate 2. The door 4 is opened and closed by the opening and closing device 5 via a rack bar 6.

Normally, the door body 4 is connected to a waterway A such as a river on the tributary side.
And it is installed in the border part of Honkawa side B. Normally, water is drained from A to B as a natural flow. The gate body 2 forms a substantially square-shaped gate, and the inside is a drain port. The gate door 4 is provided so as to fit in the gate 2 having a rectangular drainage port.

Although not shown, a door guide and a watertight metal fitting are buried in the gate body 2 in concrete. An opening / closing device 5 is provided above the gate 2, and a gate pump 3 is attached to the door 4 of the gate 2.
Is installed. On the upper part of the door 4 on which the gate pump 3 is mounted, a door hanging metal fitting is attached.

The opening / closing device 5 and the suspension pins of the door suspension metal fitting are connected by a rack bar 6. The opening and closing operation of the door body 4 (concept including the gate pump 3) is performed by the opening and closing device 5 through the rack bar 6. Further, a dust remover 7 is provided in the water channel A on the tributary side to remove dust such as driftwood flowing from the upstream of the tributary to prevent the dust from entering the gate pump 3.

Next, the details of the gate pump 3 according to the present invention will be described with reference to FIGS. FIG.
FIG. 3 is a sectional view showing the gate pump 3 provided on the door body 4. The door 4 has a substantially square frame structure or girder structure, and a horizontal submersible pump 8 is attached to one end of the frame or girder along the flowing water direction. This horizontal submersible pump is disclosed in, for example, JP-A-11-1664.
The details are described in Japanese Patent Application Publication No. 96, etc., and are therefore omitted.

Since the axis of the motor shaft is abscissa, and the direction of flow of the water and the direction of the opening coincide with each other on the abscissa, there is an advantage that the inflow speed of the water channel can be increased and the width of the water channel can be reduced. A discharge pipe 9 is fixed to the discharge side of the horizontal submersible pump 8 via a flange 10, and the discharge pipe 9 is provided with a floating check valve 11.

The floating check valve 11 is configured as follows. The discharge pipe 9 also has a rectangular flange 12 on the side opposite to the mounting surface of the horizontal submersible pump 8, and through this flange 12 a floating valve seat 13 (hereinafter, referred to as a base of a floating type check valve 11). A valve seat is attached to the discharge pipe 9. The valve seat 13 has a frame shape, and a central portion thereof forms a rectangular drain port. The valve seat 13 is provided with a bearing 14 and a sliding plate 15 on the valve seat 13 side for supporting a valve element 17 described later.

That is, as shown in FIG. 4, two bearings 14 are formed at the bottom of the valve seat 13 on the water bottom side, and an assembly shaft 16 is provided on the bearings 14. Also straddles the bearing portion 18 of the valve body 17,
, Which constitutes the door 4 of the gate pump 3
Are engaged. The assembly shaft 16 serves as a hinge, and the valve body 17 swings up and down via the assembly shaft 16.

As for the floating method in which the float is floated through a hinge at the bottom of the water, the structure of a floating gate is described in Japanese Patent Application Laid-Open No. H11-200349, etc. of the same applicant as an example used for a waterway gate. ing. The valve element 17 is made of a steel plate, has a substantially box-shaped rectangular shape, and is a closed box.

The interior of the valve element 17 is hollow,
The valve element 17 forms a float and generates buoyancy when air is injected and submerged in water. When the flow in the water channel is natural drainage flowing from the tributary side A to the main river side B, the valve element 17 swings due to the water flow pressure and falls down and is located below (a chain line position in FIG. 2). That is, the valve element 17 is in an open state.

Conversely, when the flow of the water channel flows backward from the main river side B to the tributary side A, the valve element 17 rises by buoyancy,
The valve body 17 receives the reverse water pressure and closes the drain port of the valve seat 13. That is, the valve element 17 is closed. Also, two sliding plates 15 are provided on both sides of the valve seat 13 in a wall shape.
Is attached. The valve element 17 slides and swings between the two sliding plates 15. Therefore, the water flow
It is regulated by the two sliding plates 15 and flows.

A watertight device is provided around the valve seat 13. FIG. 5 shows a lower watertight device 19, which is made of bendable watertight rubber 20 and has a valve seat 13.
And the lower part of the valve element 17. The watertight rubber 20
Since the mounting member 22 is attached to each of the valve seats 13 and the valve body 17 via the holding member 21 so as to straddle the valve seat 13 and the valve body 17, the valve body 17 is open between the valve seat 13 and the valve body 17 in the lower part. However, no gap is generated. Further, on both sides of the valve element 17, side watertight devices 23 are provided as shown in FIG.

The side watertight device 23 is composed of a flat type watertight rubber 24 (see FIG. 6), which is fixed to the valve body 17 with mounting bolts 26 via holding metal fittings 25. The side watertight device 23 slides while pressing the sliding plate 15 as the valve body 17 opens and closes. Further valve element 1
The upper part of 7 is a flat surface made of a steel plate. The upper watertight device 27 shown in FIG. 7 is provided at an end 28 of the valve seat 13, and a watertight rubber 29 having a circular tip and a P-shaped cross section is provided above the drain port of the valve seat 13. It is fixed by a mounting bolt 31 via a holding bracket 30.

The side watertight device 23 is configured as described above,
The circular portion of the watertight rubber 29 is pressed against the steel plate of the valve body 17 to deform and seal. When the valve body 17 is closed, the drain port of the valve seat 13 is completely sealed, and when the valve body 17 is open, only the upper watertight device 27 is separated and opened. As a result, the garbage can be prevented from biting into the valve body 17 and the like. Therefore, the water flow is regulated only upward and flows smoothly.

As described above, since the drainage by the natural flow can be smoothly performed by the gate pump 3, when the water channels A and B have a slightly unstable change in the height difference, the gate pump 3 alone is used. The opening and closing operation can be performed by natural flow without adding water. When the amount of water increases, the door 4 of the drain gutter 1 may be opened and closed as in the conventional case. As a result, the gate opening / closing operation is simplified.

[Embodiment 2] Next, as another embodiment, an example in which a miter type (plate-shaped meaning) check valve is applied is shown in FIG.
This will be described with reference to FIG. Horizontal submersible pump 8 on door 4
The structure for mounting the discharge pipe and the discharge pipe are the same as those in the first embodiment. The discharge port of the discharge pipe 32 in this configuration has a substantially circular shape, and a miter check valve 33 is attached to the substantially circular flange portion. This miter check valve 3
A valve seat 34 serving as a third base is fixed to a flange of the discharge pipe 32 via a bolt.

The valve seat 34 is provided with two sets of bearings 35 on the left and right sides in the flow direction, and an assembly shaft 36 is vertically engaged with the two sets of bearings 35.
, A pair of valve bodies 38 is provided via a bearing 37. As shown in FIG. 9, the pair of valve bodies 38 are supported by an assembly shaft 36 in the flow direction of the water channel, and are configured to rotate around the assembly shaft 36 to be able to open the door.

The valve element 38 opens and closes at a difference in water level between the tributary side and the main river side.
Numeral 3 is arranged in a direction in which the axis of the assembly shaft (swinging shaft) 36 is slightly inclined from the vertical direction. Since the assembly shaft 36 is slightly inclined, the weight of the valve body 38 is set so that the valve body 38 is slightly easily moved to the closed side when the pressure is at the anhydrous pressure. Therefore, even when the valve body 38 is completely opened and then moved to the closed state, the valve body 38 does not remain open, and can be smoothly closed when receiving the backflow water pressure. Note that a coil spring may be arranged on the assembly shaft 36 to urge the valve body 38 in the direction of the valve seat 34, that is, in the closing direction.

On the other hand, a watertight rubber receiving member 39 for watertightness is provided around the discharge port of the valve seat 34, and a pair of valve bodies 38 is provided with a watertight rubber 40 having a P-shaped cross section. The pair of valve bodies 38 are closed to adhere to the shape of the discharge port of the seat 34, and the pair of valve bodies 38 are closed.
The watertight rubber 40 comes into contact with the watertight rubber receiving member 39 when the discharge port of the watertight rubber is closed. This watertight rubber 40
Is connected to the valve body 38 by the bolt 42 through the holding metal 41.
Fixed to.

Although the watertight device at the opening / closing fulcrum is made of a P-type watertight rubber, it may be made of a flexible rubber as in the first embodiment. Further, a flat type watertight rubber 43 is attached also to a joint portion of the pair of valve bodies 38, and the watertight rubber 43 is fixed to the overhang portion 46 of the valve body 38 by a bolt 45 via a holding metal 44. . As described above, when the pair of valve bodies 38 are closed, the mating portions coincide, and the pair of watertight rubbers 43 come into close contact. The function of the check valve in the gate pump of this type is the same as that of the first embodiment. [Other Embodiments] The embodiments of the present invention have been described
Although described in one example, the subject of the present invention is not limited to this. For example, in the horizontal submersible pump 8, the rotation axis of the pump is arranged in the horizontal direction. However, the suction port may be slightly inclined downward to improve the suction characteristics of the pump. The gate pump 3 referred to in the above embodiment is fixed to the door 4 that is driven up and down by the opening and closing device 5. However, even if the check valves of the first and second embodiments described above are installed at the discharge port of a pump installed in a fixed weir, the same functions and functions can be achieved, so that the check valves may be applied to these. Therefore, the term "gate pump" in the present invention does not mean only the one in which a pump is installed on a vertically driven door.

[0032]

As described above, the gate pump is configured to be able to drain naturally and the frequency of opening and closing the gate is reduced, so that the gate operation is simplified. In addition, since the gate pump is provided with a check valve for preventing dust from being caught, the equipment is configured to be easily maintained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing the whole gate pump equipment of the present invention.

FIG. 2 is a sectional view showing the gate pump according to the first embodiment of the present invention.

FIG. 3 is a view taken in the direction of arrow X1 in FIG. 2;

FIG. 4 is a view on arrow Y1 of FIG. 2;

FIG. 5 is a partial sectional view showing a lower watertight device.

FIG. 6 is a partial cross-sectional view showing a side watertight device.

FIG. 7 is a partial sectional view showing an upper watertight device.

FIG. 8 is a sectional view showing a gate pump according to a second embodiment of the present invention.

FIG. 9 is a view on arrow X2 of FIG. 8;

FIG. 10 is a view taken in the direction of arrow Y2 in FIG. 8;

FIG. 11 is a cross-sectional view illustrating a configuration of a watertight device according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Drain gutter gate 3 ... Gate pump 4 ... Door body 8 ... Horizontal underwater pump 9, 32 ... Discharge pipe 11 ... Floating type check valve 15 ... Sliding plate 16, 36 ... Assembly shaft 17, 38 ... Valve body 19 ... lower watertight device 20, 24, 29, 40, 43 ... watertight rubber 23 ... side watertight device 27 ... upper watertight device 33 ... miter type check valve 39 ... watertight rubber receiving member

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) F04D 29/54 F04D 29/54 A 29/56 29/56 A (72) Inventor Michiaki Maeyama Saga City, Saga Prefecture 15-1, Ise-cho, Mizota Co., Ltd. (72) Inventor Kunihisa Chiwa 15-1, Ise-cho, Saga-shi, Saga F-term (reference) 2D019 AA41 3H034 AA01 AA03 AA20 BB01 BB08 BB12 CC07 DD12 DD20 DD26 DD28 EE04

Claims (5)

[Claims] 1. A horizontal submersible pump installed at a drain gutter gate of a waterway having a drain port, the horizontal submersible pump being installed at a gate of the drain gutter and capable of natural drainage or forced drainage. Swings with an open / close fulcrum on the water bottom side provided at the discharge port side, and is open during natural drainage, allowing flowing water to pass through the horizontal submersible pump, and suspending operation of the horizontal submersible pump during forced drainage A gate pump system comprising a floating type valve element which is closed at the time to prevent the passage of flowing water in the horizontal submersible pump, and a check valve provided with a floating valve seat abutting on the valve element. 2. A horizontal submersible pump installed at a drain gutter gate of a water channel having a drain port, the horizontal submersible pump being installed at a gate of the drain gutter and capable of natural drainage or forced drainage. It is provided on the discharge port side of and swings with opening and closing fulcrums on the left and right, it is open at the time of natural drainage, it allows running water to pass through the horizontal submersible pump, and when the horizontal submersible pump operation is stopped during forced drainage Is a closed state, and a check valve for preventing the passage of flowing water in the horizontal submersible pump. 3. The gate pump equipment according to claim 2, wherein the check valve comprises: a valve body having a swing shaft having the open / close fulcrum arranged in a vertical direction; and a valve seat abutting on the valve body. Gate pump equipment comprising: 4. The gate pump equipment according to claim 1, wherein a discharge pipe member is provided between the horizontal submersible pump and the check valve. 5. The gate pump equipment according to claim 1, wherein the horizontal submersible pump is provided on a door that is driven up and down by an opening / closing device for the drain gutter. Gate pump equipment.