JP3099227B2 - Water pump - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a water transmission device for moving water accumulated on an upstream side to a downstream side when an obstacle is provided and a river is dammed in a river closing work or the like.
Water pump .

[0002]

2. Description of the Related Art As shown in FIG. 12, when constructing a river or the like, or when constructing a bridge girder or a bank, etc., as shown in FIG. 2 has been closed. The water collected on the upstream side is generally generated by the engine-type generator 3, drives the submersible pump 4, and flows downstream through the hose 5.
Similarly, in the sabo work, water accumulated in the obstacle 2 subjected to the deadline work is flowing downstream through the hose 5 using the submersible pump 4.

[0003]

In the above construction, since the engine-type generator 3 and the submersible pump 4 are operated continuously, the following problems occur. 1. Since refueling work must be performed periodically, maintenance is troublesome. Since the drainage work is performed day and night, the burden on the worker performing the refueling work is large. 2. Environmental pollution is caused by engine exhaust gas. 3. The noise is loud, especially in the nighttime, causing trouble for the neighborhood. 4. High operating costs such as fuel consumption.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to reduce the operating time of a submersible pump to save operating costs and to transfer water with a simple device. To provide a water supply pump used for

[0005]

Means for Solving the Problems of claims 1 invention, the fault
It is laid on both sides of the object, one end is immersed in water and the other side
Water is located below the water level at one end
Move the water collected on one side through the pipe to the other side of the obstacle.
Water pump used in a water supply device
And the discharge side was connected to one lower end of the water pipe
The submersible pump and its surroundings
A water-absorbing pipe provided on the side of
Connected to the water supply pipe and the branch suction pipe provided on the discharge side of the pump.
It is characterized by having a communication hole through which it passes.

A submersible pump according to a second aspect of the present invention provides
The feature is that a valve for opening and closing the communication hole is provided .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a water transmission device 10 in which the invention according to claim 1 is applied to river construction is shown in FIGS.
This will be described with reference to FIG. First, in FIG. 1, flowing water 12 is stored on one side, for example, an upstream side of an obstacle, for example, a cutoff section 11 of a river. On the other side, for example, the downstream side of the cutoff section 11, a water storage section 13 having a lower water level than the water 12 is provided.

The water supply pipe 14 has a central portion 14a located above an obstacle, for example, the cut-off portion 11, a water inlet 14b at one lower end is immersed in the water 12, and a drain at the lower end on the other side. 14 c faces above the water storage unit 13 at a position lower than the water surface of the water 12 on one side.

The lower end 14b on one side has a water supply
The pump 20 is connected. This water pump 20
Is connected to a submersible pump 21, a branch suction pipe 22 and a
The through hole 23 is formed.

The submersible pump 21 has a well-known structure.
The discharge side 21a is connected to the water inlet 14b, and is appropriately operated by an installed power line or an engine type generator.

The branch suction pipe 22 is provided with a submersible pump 21 and a discharge pipe.
It is formed so as to surround the outlet side 21a.
The suction port 22a is immersed in the water 12. The branch suction pipe 22 is connected to a water pipe 14 at the position of the discharge side of the water pump 21 as shown in FIG. 2, the water pump 21
One or a plurality of communication holes 23 are formed on the discharge side 21a of the hopper .

The water supply device 10 drives the submersible pump 21 when the water 12 on the upstream side is stored and the water level rises. The water sucked by the submersible pump 21 is indicated by an arrow A
As shown in (1), the water is transferred from the lower end portion 14b on the other side to the water storage portion 13 through the water supply pipe 14. When the water level in the water storage section 13 rises, it overflows and flows down downstream.

When the water supply is in a steady state and the water supply pipe 14 is full, the submersible pump 21 is stopped. Although the amount of water indicated by the arrow A passing through the submersible pump 21 decreases , the water 12 on the upstream side is continuously sucked from the branch water absorption pipe 22 as shown by the arrow B due to the siphon action, and passed through the plurality of communication holes 23 to transmit the water. 14 and further into the water storage section 13 on the downstream side
A large amount of water is sent.

The water supply by the siphon action is stopped when the amount of water on the upstream side decreases and the water level of the water 12 drops significantly. However, when the water amount is stored again and the water level rises, if the submersible pump 21 is driven, the water supply operation is immediately performed as described above, and the above-described water supply is repeated. Note that a water level sensor may be provided, and the submersible pump 21 may be automatically driven when the water level recovers to a predetermined height.

According to the first embodiment, the submersible pump 2
The operation of 1 only needs to be performed during the initial period until the flow of water in the water supply pipe 14 reaches a steady state, and since the subsequent water supply is performed by the siphon action, the operation time of the submersible pump 21 can be significantly reduced. It saves operating costs, eliminates the need for complicated maintenance required for conventional engine-type generators, and prevents pollution such as environmental pollution and noise caused by exhaust gas. Is played.

[0016] Figure 3 shows a water supply device 30 of the second embodiment, differs from the first embodiment, the other side of the lower end portion 14c of the water supply pipe 14 is immersed in the water storage section 13 On the point. According to the second embodiment, even when the water level on the upstream side decreases and the water supply stops, the inside of the water supply pipe 14 is maintained in a full state, so that if the water level on the upstream side increases, the submersible pump 21 is turned off. Even if it is not driven, there is an effect that the water supply by the siphon action is immediately performed.

[0017] Figure 4 shows a water supply device 31 of the third embodiment, differs from the second embodiment, the tip of the branch suction pipe 22 the suction portion on the upstream side (so-called Kamajo) deep drill down The height of the portion 22a is set lower than the water surface of the water storage portion 13. Also in the third embodiment, when the water level on the upstream side drops and the water supply stops, the water supply pipe 1
Since no air is mixed into the water pipe 4 and the inside of the water supply pipe 14 is reliably maintained in a full state, the water supply when the water level is recovered can be more reliably recovered.

[0018] Figures 5 and 6 show a water supply device 32 of the fourth embodiment according to claim 2, differs from the second embodiment, first to open and close the communication hole 23 of the water supply pipe 14 1 in that the on-off valve 24 is provided. The first on-off valve 24 closes the communication hole 23 as shown in FIG. 5 when the submersible pump 21 is driven, and opens the communication hole 23 as shown in FIG. 6 when the submersible pump 21 stops. It works to do so. According to the fourth embodiment, since the first on-off valve 24 prevents the water discharged from the submersible pump 21 from flowing back to the branch suction pipe 22, vortex or the like is generated around the communication hole 23. Therefore, there is an effect that the water supply efficiency is improved.

FIG. 7 shows a water supply device 33 of the fifth embodiment and a second on-off valve 27 as a water suction valve. The difference from the fourth embodiment is that the water supply pipe 14 branches off at a substantially right angle. The water absorbing pipe 25 is branched, and a second opening / closing valve 27 is provided so as to be rotatable around a fulcrum 26 of the branched water absorbing pipe 25, and the branch water absorbing pipe 25 is opened and closed in conjunction with the water level. The second on-off valve 27 integrally forms a float-like floating portion 27a formed of a soft elastic material such as soft rubber or synthetic resin in a hollow body, and a valve seat 27b abutting on the end face of the branch water absorption pipe 25. It was done. According to the second opening / closing valve 27, the structure is simple, and the closing timing of the branch water intake pipe 25 is accurately performed, so that there is an effect that the water supply can be efficiently performed. Note that the second on-off valve is not limited to the above-described configuration, and a float may be connected to a well-known switching valve, and the second on-off valve may be opened and closed in conjunction with the water level.

According to the fifth embodiment, when the water level on the upstream side drops, the second on-off valve 27 closes the branch suction pipe 25 (see FIG. 8), so that the water supply by the siphon action is stopped. Rises, the second on-off valve 27 floats, the branch water suction pipe 25 is opened, and the water supply is restarted, so that there is an effect that the water supply is continuously performed.

FIG. 9 and FIG. 10 shows a water supply device 40 of the sixth embodiment, an embodiment of the sixth, also suitable for submersible pump 21 of small capacity. The difference from the water supply device 32 of the fourth embodiment is that the air port 4 is provided at the uppermost portion 14a of the water supply pipe 14.
1 is provided, and a lid 42 for sealing the air port 41 is attached. Furthermore, a discharge valve 43 for opening and closing the discharge port 14c is provided at the lower end of the water pipe 14 immersed in the water storage unit 13. The discharge valve 43 may be configured to be detachable from the water pipe 14, and may be detached from the water pipe 14 when the discharge valve 43 is opened to shift to a siphon water supply state as described later.

In the water supply device 40, the discharge valve 43
With the air port 41 open and the submersible pump 2
When 1 is operated, the water is gradually supplied into the water pipe 14 because the submersible pump 21 has a small capacity. Water is water pipe 1
The water level is gradually raised as shown by the two-dot chain line C in FIG. And
When the inside of the water pipe 14 becomes full, excess water is discharged to the air port 41.
Overflows from. Therefore, the air port 41 is sealed by attaching the lid 42 and the discharge valve 43 is opened.

Then, the water in the water pipe 14 is discharged to the outlet 14c.
And water corresponding to the discharge amount is sucked through the suction port 14b. In this state, even if the submersible pump 21 is stopped, water is sucked in from the suction port 14b and the branch suction port 22 by the siphon action and discharged from the discharge port 14c, and the water supply state is continued. In addition, even if the amount of water in the upstream decreases and water supply stops, the height of the suction port 14b and the branch suction port 22 is
Since it is at a position lower than the water surface of the water storage unit 13 on the discharge side,
No air is mixed into the water pipe 14 and the water pipe 14
Since the inside is kept full, the water supply will be restored as soon as the water level recovers. The water supply device 40 of the sixth embodiment has the same effect as the water supply device 32 of the fourth embodiment.

[0024] FIG. 11 shows a water supply device 45 of the seventh embodiment, the difference between the water conveying device 40 is provided with a U-shaped folded portion 46 to the discharge end of the water pipe 14, the upward The discharge valve 43 is attached to the end. This water supply device 4
The water surface on the discharge side of No. 5 corresponds to the height of the discharge valve 43 and is set higher than the lower end of the branch suction port 22 by the dimension H.
The water supply device 45 of the seventh embodiment has the same effect as the water supply device 40 of the sixth embodiment.

[0025]

As described above, according to the present invention, one of
Is immersed in water and the other end is
Accumulate on one side through a water pipe located below the
Used in water transmission systems to move trapped water to the other side of the obstacle.
Water pump that is immersed in water and the discharge side is
A submersible pump connected to one lower end of the pipe and this submersible
Provided outside and surrounding the pump discharge side, water absorption at the lower end
A branch water intake pipe having a hole,
And a communication hole for communicating the water supply pipe and the branch suction pipe, so that the water supply pump can be driven only for an initial period.
For example, the flow of water in the water pipe becomes steady. So for water supply
If you stop the pump, siphon action will continue
Since the water supply is performed, the operation time of the submersible pump can be significantly reduced, the operation cost can be saved, and the pollution of the exhaust gas such as environmental pollution and noise can be prevented.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view of a water supply pipe and a branch water absorption pipe.

FIG. 3 is a front view showing a second embodiment of the present invention.

FIG. 4 is a front view showing a third embodiment of the present invention.

FIG. 5 is a front view showing a state in which a submersible pump is operating in a fourth embodiment of the present invention.

FIG. 6 is a front view showing a state where a submersible pump is stopped in a fourth embodiment of the present invention.

FIG. 7 is a front view showing a fifth embodiment of the present invention.

FIG. 8 is an enlarged vertical sectional view of the water suction valve in a state where a branch water suction pipe is closed.

FIG. 9 is a front view showing a sixth embodiment of the present invention.

FIG. 10 is a front view showing the progress of water supply.

FIG. 11 is a front view showing a seventh embodiment of the present invention.

FIG. 12 is a front view showing a conventional example in river construction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Water supply apparatus 11 Cutoff part (obstacle) 12 Water 13 Water storage part 14 Water supply pipe 21 Submersible pump 22 Branch water absorption pipe 23 Communication hole 24 First open / close valve 25 Branch water intake pipe 27 Second open / close valve 30 Water supply apparatus 31 Water supply apparatus 32 water feeder 33 water feeder 40 water feeder 41 air port 42 lid 43 discharge valve 45 water feeder 46 folding part

Continuation of the front page (56) References JP-A-61-257591 (JP, A) JP-A-63-25400 (JP, A) JP-A-60-108800 (JP, U) JP-B-3-48360 (JP) , B2) Jikken 42-18138 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) F04F 10/00 F04F 10/02

Claims (2)

(57) [Claims] (1) water is placed on both sides of an obstacle, and one end of the obstacle is
Immersed in the other end is higher than the water level at one end
Obstructed water accumulated on one side through lower water pipe
A water supply port used for a water supply device that moves the object to the other side.
Pump that is immersed in water and the discharge side is connected to one lower end of the water pipe.
Submersible pump and a suction pump provided around the discharge side of the submersible pump.
A branch suction pipe having a water hole; and a branch suction pipe provided on a discharge side of the submersible pump.
A communication hole for communicating with the water pipe.
Pump for water. 2. The submersible pump opens and closes a communication hole on the discharge side.
The water supply according to claim 1, wherein a valve is provided.
For pumps.