JPH0740710Y2 - Submersible pump with foreign material crushing function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a submersible pump that can be effectively used in dredging work for sucking or excavating water bottom or seabed soil, irrigation work, and the like.

(B) Conventional technology Various types of submersible pumps have been conventionally known as submersible pumps used for the above purpose.
There is a form shown in the figure.

In the figure, 51 is an impeller casing that surrounds the impeller 52, and the casing 51 has a bottom plate 51a whose central portion is opened as a sediment suction port 53. Further, 54 is an output shaft of a rotary motor (not shown), the output shaft 54 extends below the bottom plate 51a through the earth and sand suction port 53 of the impeller casing 51, and a stirring cutter 55 is provided at the extension end thereof. It is fixed. Incidentally, 56 is a supporting leg for supporting the pump.

With such a configuration, when the rotary motor is operated, the output shaft 54, the impeller 52 and the stirring cutter 55 rotate integrally, and while stirring the earth and sand located below the agitator cutter 55, the earth and sand is indicated by an arrow. The air can be sucked into the impeller casing 51 through the earth and sand suction port 53 provided on the bottom plate 51a, and then can be discharged to the outside by using an appropriate earth and sand discharge pipe.

(C) Problems to be Solved by the Invention However, for example, in the work of sucking earth and sand in the coastal construction, there are cases where aquatic organisms such as jellyfish are sucked together with earth and sand. Such jellyfish may block the inner space of the impeller casing 51, disable the earth and sand discharging work, and, in an extreme case, stop the rotation of the output shaft 54 of the rotary motor to cause burnout. In addition, it is necessary to remove jellyfish.

Further, in irrigation work such as a creek, weeds that grow in the creek and the like are simultaneously sucked into the impeller casing 51 together with water.

Then, as with the case of jellyfish and other aquatic organisms, such weeds also block the internal space of the impeller casing 51 to disable irrigation work, and in extreme cases, stop the rotation of the output shaft 54 of the rotary motor. Then, there is a risk of burning.

An object of the present invention is to provide a submersible pump that can solve the above problems.

(D) Means for Solving the Problems The present invention includes a rotary motor built in a motor casing, an impeller casing connected to the lower portion of the casing, and an output shaft of the rotary motor extending downward through the impeller casing. The present invention relates to a submersible pump including a bent string for crushing foreign matter attached to the output shaft.

Further, the present invention is also characterized in that a stirring cutter is attached to the output shaft of the rotary motor, and a bent string for crushing foreign matter is attached to the stirring cutter or the like.

Furthermore, the present invention is also characterized in that the bent string for crushing foreign matter is formed of a chain formed by connecting a number of chain links, a wire rope, and a synthetic resin string.

(E) Operation and Effect With the above-described configuration, the present invention has the following operation and effect.

That is, when the rotary motor is operated, the output shaft, the impeller and the stirring cutter rotate integrally, while stirring the water and earth and sand located below the stirring cutter, and sucking them into the impeller casing, and thereafter, It will be discharged to the outside using an appropriate earth and sand discharge pipe.

Further, in the present invention, since the bent string for crushing foreign matter, which is composed of a chain, wire rope, rope string made of synthetic resin, etc., is attached to the output shaft, etc., the bent string for crushing foreign matter is strong under the impeller casing. It will rotate to.

Therefore, foreign matter such as jellyfish and weeds that are about to be sucked into the inner space of the impeller casing are shredded by the strong crushing force of the bent string for crushing foreign matter during irrigation work such as coastal work and creek. It will be sucked into the impeller casing.

Therefore, it is possible to completely prevent the impeller casing from being blocked by foreign matter such as jellyfish or weeds, and to smoothly perform dredging work, irrigation work, and the like.

(F) Embodiment Hereinafter, the present invention will be described in detail based on an embodiment shown in the accompanying drawings.

FIG. 1 shows the entire structure of a submersible pump A according to the present invention.

As shown in the figure, the motor casing 2 having the rotary motor 1 built therein has an impeller casing 4 concentrically surrounding the impeller 3 connected to the lower end thereof.

The impeller casing 4 has an opening at the center of the bottom plate 5 to serve as a sediment suction port 6, and a sediment discharge portion 7 is formed on the periphery thereof. The sediment discharge pipe 7 is connected to the sediment discharge portion 7. Has been done.

Reference numeral 9 denotes an output shaft of the rotary motor 1 arranged in the motor casing 2. The output shaft 9 fixes the impeller 3 in the impeller casing 4, and further, the tip of the output shaft 9 is attached to the impeller casing 4. It extends below the bottom plate 5 through the earth and sand suction port 6, and an agitation cutter 10 having a tapered agitation blade 10a at the periphery is fixed to the extension end.

Further, 11 is a plurality of support legs for supporting the submersible pump A, the upper end of which is connected to the impeller casing 4 and the lower end thereof is connected to a ring-shaped ground ring 12.

In this embodiment, as shown in FIGS. 1 to 3, in the above-described structure, one end of a plurality of bent string bodies 13 for crushing foreign matter is provided at a portion of the output shaft 9 above the upper edge of the stirring cutter 10. It is a characteristic feature that the two are connected.

In the present embodiment, the bent string 13 for crushing foreign matter is a chain formed by connecting a plurality of chain links made of stainless steel.

However, the chain is not limited to such a chain, and, for example, a synthetic resin such as polyacetal resin or a wire rope can be used.

Further, in FIG. 3, the bent string 13 for crushing foreign matter is 180
Although two are connected on the opposite side, it may be one or three or more.

Next, the operation of the submersible pump A having the above configuration will be described.

That is, when the rotary motor 1 is operated, the output shaft 9, the impeller 3 and the stirring cutter 10 are integrally rotated to stir water and earth and sand located below the stirring cutter 10, and these are stored in the impeller casing 4. After that, it is discharged to the outside by using the earth and sand discharging section 7 and the earth and sand discharging pipe 8.

In this embodiment, however, the foreign matter crushing bent cord body 13 made of a chain, wire rope, synthetic resin rope cord or the like is attached to the output shaft 9, so that the foreign matter crushing bent cord body 13 is attached.
Will rotate strongly below the impeller casing 4, as shown in FIGS. 3 and 4.

Therefore, in the shoreline work or the irrigation work in the creek, the foreign matter F such as jellyfish or weed which is about to be sucked into the inner space of the impeller casing 4 has the bent string body 13 for crushing the foreign matter as shown in FIG. It is shredded by a strong crushing force and then sucked into the impeller casing 4.

Therefore, it is possible to completely prevent the impeller casing 4 from being blocked by the foreign matter F such as jellyfish or weeds, and to smoothly perform the dredging work and the irrigation work.

5 to 9 show another embodiment of the submersible pump A according to the present invention.

The embodiment shown in FIG. 5 is characterized in that the bent string 13 for crushing foreign matter is connected to the lower end surface of the stirring cutter 10.

With such a configuration, the bent string body 13 for crushing foreign matter
The mounting work of can be performed easily and quickly.

The embodiment shown in FIG. 6 is characterized in that the peripheral surface of the stirring cutter 10 is not tapered, and the bent string 13 for crushing foreign matter is connected to the upper portion of the peripheral surface of the stirring cutter 10.

With such a configuration, the bent string body 13 for crushing foreign matter
The attachment work can be performed easily and quickly, and by increasing the radius of gyration of the bent string 13 for crushing foreign matter, it is possible to more effectively crush jellyfish and weeds.

The embodiment shown in FIG. 7 is characterized in that the stirrer cutter 10 is omitted and the bent string 13 for crushing foreign matter is connected to the lower end of the output shaft 9.

With such a configuration, the submersible pump A having a foreign matter crushing function can be manufactured at low cost.

The embodiment shown in FIG. 8 is characterized in that the stirring cutter 10 is a propeller-type cutter and the bent string 13 for crushing foreign matter is connected to the upper part of the peripheral surface of the stirring cutter 10.

With such a configuration, the bent string body 13 for crushing foreign matter
The mounting work of can be performed easily and quickly.

The embodiment shown in FIG. 9 is characterized in that a plurality of support legs 11 for supporting the submersible pump A are curved outward.

With such a configuration, the bent string body 13 for crushing foreign matter
The attachment work can be performed easily and quickly, and by increasing the radius of gyration of the bent string 13 for crushing foreign matter, it is possible to more effectively crush jellyfish and weeds.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a submersible pump according to the present invention, FIG. 2 is a detailed explanatory view of main parts, FIGS. 3 and 4 are operational explanatory diagrams of a bent string for crushing foreign matter, and FIGS. FIG. 9 is an explanatory view of a main part structure of another embodiment, and FIG. 10 is a front view of a conventional submersible pump. In the figure, A: Submersible pump 1: Rotary motor 2: Motor casing 3: Impeller 4: Impeller casing 5: Bottom plate 6: Sediment suction port 7: Sediment discharge section 8: Sediment discharge pipe 9: Output shaft 10: Stirring cutter 11: Support leg 13: Bent string for crushing foreign matter

Claims (4)

[Scope of utility model registration request] 1. A rotary motor (1) built in a motor casing (2), an impeller casing (4) connected to a lower portion of the casing (2), and a rotation extending downward through the impeller casing (4). A submersible pump having a foreign matter crushing function, comprising an output shaft (9) of a motor (1) and a bent cord (13) for crushing the foreign matter attached to the output shaft (9). 2. A submersible pump with a foreign matter crushing function according to claim 1, wherein a stirring cutter (10) is attached to the output shaft (9) of the rotary motor (1). 3. A stirring cutter (1) instead of the output shaft (9).
The submersible pump having a foreign matter crushing function according to claim 2, wherein a bent string body (13) for crushing the foreign matter is attached to (0). 4. The bent string (13) for crushing foreign matter is formed by any one of a chain formed by connecting a number of chain links, a wire rope, and a synthetic resin string. 3. A submersible pump having the foreign matter crushing function according to claim 3.