JP2000230496A - Water pumping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a water pumping device to be transported to, and installed at, a site with only manpower by mounting a underwater motor pump unit detachably on a wheel axle, while providing a float and a handle so that the pump unit can be suspended, underwater with the float floating on a water surface. SOLUTION: An underwater motor pump unit comprising an underwater motor 2 and a pump 1 is mounted detachably on an axle supported by a pair of wheels 5. A handle is secured to a pair of stays fixed on both sides of the pump 1. This water pumping device is transported to a bank or other site near an underwater installation point by a human worker who holds onto the handle. A float suspension ring 17 that can be opened and closed is then used to mount a float 10 to a float mounting collar 7 of the underwater motor pump. Further, a rope 12 for underwater installation is attached to a hook provided on the transportation handle before the device is placed into the water. Since the underwater motor pump is mounted on the axle according to this construction, the device can be manually transported and installed on-site with ease.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a submersible motor pump unit which is installed in water to discharge water at a flood danger due to a rise in the water level of a tributary of a river or an irrigation channel due to heavy rain or at a flood site. The present invention relates to a pumping device used.

[0002]

2. Description of the Related Art Conventionally, as a pumping device equipped with this kind of underwater motor pump for emergency drainage, for example, a large-capacity underwater motor pump is transported to the vicinity of a tributary of a river to be drained by truck. It is known that a crane is lowered on a levee such as a tributary or the like and then placed on a foundation prepared in advance on a slope of the levee.

[0003] Such a known pumping apparatus is relatively heavy and requires crane equipment for installation on site. For this purpose, crane equipment is prepared in advance on site or a crane truck is installed. I have to accompany you. In addition, for that purpose, a qualified person who can operate the crane needs to be deployed, and there is a problem in the deployment of workers.

In addition, since the conventional apparatus is installed on the slope of a bank such as a tributary or the like, a foundation made of concrete or the like must be provided in advance at a location where emergency placement of a drainage device is considered necessary. Cannot be installed in place.
There is also a problem that it is difficult to install a truck or a crane truck unless the road is maintained at a site where it can be approached.

[0005] When the apparatus is installed manually without using a crane, conventionally, a large number of small-capacity submersible motor pumps are used.
This was submerged on the riverbed or on the slope of a dike, or was installed on a raft floating on the water.

[0006] However, in the case of installation on a riverbed or a slope of a dike or the like, the installation surface is soft or uneven, so that it is difficult to perform stable installation, and the suction port of the pump is not provided. Since it approaches the riverbed or the slope of the embankment, there is a problem that the gravel or the like is sucked in, the suction strainer is blocked, and the impeller and the like are rapidly worn.

[0007] Even with a small-capacity underwater motor pump, carrying it underwater by hand and installing it is a laborious and dangerous operation. Also, when installing on a raft,
There was a problem that the raft and its mooring equipment would be large.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to provide a pumping apparatus which can be easily carried in and installed on site and can be operated stably. The purpose is.

[0009]

According to the present invention, there is provided a pumping apparatus including a submersible motor pump unit which is used by being put into water, wherein the submersible motor pump unit is detachably mounted on an axle of a wheel, and The underwater motor pump unit is provided with a float and a handle, and the float floats on the surface of the water and is suspended and supported in the water.

According to the present invention, the suspension position of the submersible motor pump by the float is adjusted so that the discharge nozzle of the submersible motor pump is directed in a direction in which the discharge hose does not bend excessively during pumping. It is supposed to.

According to the present invention, the float is removably attached to an openable and closable suspension wheel, and a charging rope is attached to the handle.

Further, according to the present invention, a pump supporting device having a pipe formed in a semicircular shape is fixed downward to the center of gravity of the axle.

Therefore, the pumping device carried by truck to the nearest point of the loading point can be easily transported by one worker to the loading point by wheels and handles. When the pumping device is put into the water, the float rises to the surface of the water, and the submersible motor pump is suspended and supported by the float to facilitate the installation work. Away from the ground, preventing the intrusion of gravel and the like, and enabling stable operation.

Further, since a commonly used hose is swelled by water pressure and tends to become linear, the hanging position of the float is adjusted so that the hose is oriented in a suitable direction, and efficient and stable operation is achieved. it can.

Since the wheels and the float are detachable, the number of transportable vehicles per truck can be increased.

Further, since the pump supporting device in which the pipe is formed in a semicircular shape is provided on the side of the center of gravity from the axle, it is possible to prevent the main body portion from being grounded at the time of stationary installation or elevating. In addition, a hook can be directly hooked on the pump supporting device to move up and down.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a submersible motor pump unit A including a generally cylindrical submersible motor 2 and a pump 1
Are supported on a pair of wheels 5 and are detachably provided on an axle 6. A handle 8 is fixed to a pair of stays 20 fixed to both sides of the pump 1 and extending rearward. A hook 9 is attached to the handle 8 at the center thereof to facilitate loading and mooring operations as described later.

A suction strainer 3 is provided on the handle side of the pump 1.
Are provided integrally. A discharge port 4 having a discharge nozzle 1a is opened upward in the upper part of the pump 1. A suspension ring 7 is mounted in front of the underwater motor 2 (opposite the handle), and a power cable 16 extends.

FIG. 2 discloses that the pumping device shown in FIG. 1 is put into water. For example, it is assumed that the pumping device carried to the nearest position by a truck or the like is transported to a position above the embankment 14 near the input point with the worker M holding the handle 8. Then, as shown in FIG. 3, the float 10 is attached to the float mounting ring 7 of the submersible motor pump with the float hanging ring 17 that can be opened and closed, and the flexible hose 11 is connected to the discharge nozzle 1 a of the pump via the hose joint 15 with the hose joint 15. The loading rope 12 is attached to the hook 9 provided on the handle 8 for attachment and transfer.

Then, the loading rail 13 is leaned on the water from the upper edge of the embankment on the river side, and the wheel 5 is mounted on the rail while pulling the loading rope 12. Next, the worker M gradually feeds the charging rope 12 and inputs the pumping device into the water. In addition, when the river side such as embankments is an appropriate slope,
This is possible without using the loading rail 13.

FIG. 3 shows an example of a posture during operation of the pumping apparatus embodying the present invention. As shown in FIG. 3, the pumping device floats while being supported by the float 10 when put into water. The flexible hose 11 used for the discharge pipe is crushed in a belt shape before operation, but when the pumping device is operated, it expands into a tubular shape due to water pressure, and at the same time, tries to become a straight line or a curved line with a small curvature. For this reason, if the direction of the discharge nozzle of the pump does not match the direction of the above-mentioned tubular hose, the loss of the flow due to the bending of the hose, the overturning of the pump, or the change in the attitude of the pump due to the change in the head, etc., will not occur. It becomes a stable factor. Such an unstable phenomenon can be avoided by adjusting the suspension position of the float 10.

Therefore, a submersible motor pump weighing about 100 kg or less can be easily transported to the site by human power. However, it is necessary to arrange several tens of such small pumps for effective drainage during floods or when there is a danger of flooding. Due to the increase, it is not possible to transport near the site by one truck.

However, if the wheels are removed, both the underwater motor pump and the wheels have compact shapes, so that several tens of pumping devices can be easily loaded on one truck. For the same purpose, it is conceivable to make the axle and the transport handle detachable. The float mounting ring 7 is provided on the underwater motor, and the float is removed for the same reason.

FIG. 4 shows the relationship between the attitude of the submersible motor pump unit and the state in which no excessive force is applied to the hose. However, this drawing shows an example of a pump for suction in the axial direction and discharge in the direction perpendicular to the axis, and wheels and discharge hoses are omitted for simplification.

In the figure, θ is the angle between the direction of the discharge nozzle 1a corresponding to the discharge hose and the horizontal line, F _S
The reaction force for the pump sucks water, F _D is the discharge hose tension, W is gravity pumping device, B is a buoyancy of the float. Also, the intersections between the action lines of gravity and buoyancy and the shaft center line of the submersible motor pump are G and M, respectively, the distance between the discharge center line and the point G is h, and the distance from the point G to the point M is x. I do.

From the axial force balance and force moment balance conditions, the following equation is obtained. Than two equations on _{Bcosθ-Wcosθ-F S = 0} hWsinθ-xBsinθ = 0, when determining x as follows. _{x = hW / (F S /} cosθ + W) ······ (1) That is, in the present specification, the term "discharge nozzle is, as directed in the direction that does not cause excessive bending to the hose discharge during pumping "Adjust the suspension position by the float" means that in this example, the position of the line of action of buoyancy is the position of x in (1).

Next, FIGS. 5 to 9 show another embodiment.
An example in which a pump support device is provided is shown. In the drawing, a pump support device 21 formed in a U-shaped semicircle (see FIG. 7) is fixed to a stay 20A extending rearward of the pump 2 downward. And the stay 20A
The handle 8 is bent slightly upward from the position where the pump support device 21 is fixed, and the handle 8 is fixed to the distal end.

As shown in FIG. 5, the center of gravity G of the pump unit A is located behind (ground side) the ground point P of the wheel 5, so that when the worker M releases his hand, the wheel ground point P and the pump It is supported by the support device ground point Q, and the grounding of the pump body can be avoided.

That is, in the embodiment without the pump supporting device shown in FIG. 1, when the worker M releases his hand, the lowermost point of the rear end of the main body is grounded, and the pump is connected to the grounding point. A component force of weight or an impact load is applied. Also, as shown in FIG.
, And the body is grounded and an impact is applied when the slope is lowered by its own weight. It is not suitable for the structure or the purpose to provide the main body with the strength to withstand a large impact in this way. This problem can be solved by providing the pump support device 21 as in this embodiment.

Further, as shown in FIGS. 8 and 9, this pumping device is used in practice to lift the slope 1 of the embankment 14 by a lifting device (a winch or the like) W or a worker M on the vehicle.
It is inevitably required to raise and lower at 2. FIG. 8 shows an example in which the handle 8 is hung up and down by hanging the rope 12, the pump supporting device 21 slides on the ground, and the pump body (the pump 1 and the suction strainer 3) has a margin s. Can move without touching.

FIG. 9 shows an example in which the hook 9A of the rope 12 is hung on the pump support device 21 and is lifted and lowered by the winch W on the truck (drain pump car) T. Due to the tension of the rope 12, a component force for lifting the pump support device 21 upward is generated, so that contact and sliding with the ground can be easily avoided. In this case, the hook 9A can be hung on the annular portion formed by the handle 8 and the semicircular pump support device 21 to prevent the hook 9A from coming off, and when tension is generated in the rope 12, the hook 9A moves to the center to be stable. Can support the pumping device.

As described above, according to the present invention, it is possible to provide a pumping device that can be easily transported and installed.

[0033]

As described above, according to the present invention, the following excellent effects can be obtained. (A) Since the submersible motor pump is suspended from the float and supported, it is stably supported irrespective of the inclination or unevenness of the installation surface, and the suction can be separated from the riverbed etc., so there is no risk of sucking gravel etc. Time reliability can be obtained. (B) Since the suspension position of the submersible motor pump by the float is discharged and the nozzle is adjusted so as to be directed to the natural direction of the hose, the operation can be continued in an efficient and stable posture. (C) Since the submersible motor pump is installed on the axle,
In addition to being able to be transported to the drainage site manually without using a crane, wheels and floats are structured to be easily attached and detached, so they have a compact shape and can transport many pumping devices with one truck. it can. (D) By providing the pump support device, troubles caused by grounding of the pump main body, for example, damage, deformation, and the like can be avoided, and operational reliability can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a water pump according to the present invention is carried into a drainage site.

FIG. 2 is an explanatory view showing a place where the pumping device shown in FIG. 1 is put into water.

FIG. 3 is a side view showing a place where the pumping device shown in FIG. 1 is operated.

FIG. 4 is an external view of a main part for describing a force balancing condition of the pumping device shown in FIG.

FIG. 5 is a side view showing an embodiment provided with a pump support device.

FIG. 6 is a plan view of FIG. 5;

FIG. 7 is a front view of the pump support device shown in FIG. 5;

FIG. 8 is an explanatory view showing a place where the water pump shown in FIG. 5 is raised and lowered.

FIG. 9 is an explanatory view showing a place where the water pump shown in FIG. 5 is hooked on a pump supporting device and raised and lowered.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pump 1a ... Discharge nozzle 2 ... Underwater motor 3 ... Suction strainer 4 ... Discharge port 5 ... Wheel 6 ... Axle 7 ... Hanging ring 8. ··· Handle 9 ··· Hook for loading and mooring 10 ··· Float 11 ······························································································································································································ ... Power cable 17 ... Hanging ring 20, 20A ... Stay 21 ... Pump support device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Sugaya 11-1 Haneda Asahimachi, Ota-ku, Tokyo Inside Ebara Works Co., Ltd. (72) Inventor Keiji Kato 11-1 Asahi-cho Haneda, Ota-ku, Tokyo No. EBARA CORPORATION (72) Inventor Osamu Takashi 11-1 Haneda Asahimachi, Ota-ku, Tokyo In-house EBARA CORPORATION (72) Inventor Shoji Otsuka 2-22-15 Akasaka, Minato-ku, Tokyo (72) Inventor Endo ▲ Takashi ▼ 9-15 Fukamachi, Aoba-ku, Aoba-ku, Sendai City, Miyagi Prefecture Inside the Tohoku Regional Construction Bureau, Ministry of Construction (72) Inventor Yashiko Shikano Zao, Yamagata City, Yamagata Prefecture 47 Nishinarizawa 47 Ministry of Construction Tohoku Land Construction Bureau Yamagata Construction Office

Claims (4)

[Claims] 1. A pumping apparatus comprising a submersible motor pump unit to be put into the water and used, wherein the submersible motor pump unit is detachably mounted on an axle of a wheel, and the submersible motor pump unit includes a float, a handle and a handle. Wherein the float floats on the surface of the water and is suspended and supported in the water. 2. The suspension position of the submersible motor pump by a float is adjusted so that the discharge nozzle of the submersible motor pump is oriented in a direction in which the discharge hose does not bend excessively during pumping. Pumping equipment. 3. The water pump according to claim 1, wherein the float is removably attached with an openable and closable suspension ring, and a charging rope is attached to a handle. 4. A pump supporting device having a pipe formed in a semicircular shape at the center of gravity of the axle is fixed downward.
The pumping apparatus according to any one of claims 1 to 3.