JPH0542692U - Submersible pump equipped with a cutter device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a pump capable of crushing plants or wastes in water, which block the strainer and diminish the pumping function in a conventional submersible pump, and suck the crushed product together with water for draining. [Constitution] Rotary cutter blade 1 on the impeller shaft of the vertical submersible pump
1 and a suction guide cone 12 are axially mounted and integrally rotated, and an inflow guide cylinder 9 is connected below a lower suction port of a pump, and a porous plate 10 serving as a fixed blade is provided in the guide cylinder. The rotary cutter blade 11 is fixed so as to be located on the upper surface thereof, and the rotary cutter blade and the suction guide cone are surrounded by a protective frame body.

Description

[Detailed description of the device]

The present invention relates to a submersible pump which is effective when plants are growing on the bottom of the water or waste is present.

[0002]

[Prior Art]

 When there are waste pieces on the riverbed or dense plants, the strainer of the conventional submersible pump is clogged easily and smooth pumping work cannot be performed. It was

[0003]

[Problems to be solved]

 This proposal is to install a cutter device on the suction side of the submersible pump to cut and crush the suctioned material and send it to the submersible pump so that the crushed material is drained to the ground or onboard together with pumping, and the strainer is removed from the pump. The cutter device also functions as a filter.

[0004]

【Constitution】

 In the proposed device, an impeller, a rotary cutter blade and a suction guide cone are mounted on the rotary shaft of a vertical submersible motor, and a diameter of the inflow guide expanded to the suction side opening of the drain pipe casing surrounding the impeller. A cylinder is continuously provided, and the guide cylinder is adjacent to the rotary cutter blade in parallel with and adjacent to the rotary surface of the rotary cutter blade. A frame body for preventing landing of the suction guide cone is fixed to the lower part of the frame.

[0005]

【Example】

 In the figure, 1 is a submersible pump, 2 is a submersible motor, 3 is a vertical shaft pump having a motor rotating shaft 4 and an impeller 5 attached thereto, and a casing 6 is connected to a drain pipe 7. Reference numeral 8 is an opening on the suction side of the pump, 9 is an inflow guide tube, and 10 is a perforated plate, which is made of a resistant metal such as high chrome cast iron, and constitutes a cutter device together with a rotary cutter blade 11 made of the same material. Reference numeral 12 is a suction guide cone, which is provided with blades 13. Reference numeral 14 is a bottom frame for protecting the cutter blade and the suction guide cone.

As shown in FIG. 1, the submersible pump of the present invention is drooped into the water together with the power cable 31 and the drainage pipe 32 from the ship or from the land by the rope 30 or the like to reach the bottom. When the pump is driven, the surrounding water is drawn into the pump and discharged from the drain pipe by the action of the guide cone and the action of the impeller. At this time, the plastic film, dust, plant stems, etc. on the river bottom are also sucked in, but they are cut or crushed by the rotary cutter blade 11 and the hole edge 10A of the perforated plate that serves as a fixed blade, and the small pieces are discharged together with the drainage. is there. In order to make the crushing action stronger, it is preferable to provide a hard metal ridge 15 on the surface 11A of the rotary cutter blade on the side of the porous plate as shown in FIGS. The shape of the cutter blade may be a curved blade as shown in FIG. 3 or a straight blade as shown in FIG.

[0007]

【effect】

 The proposed submersible pump can drain water while crushing solids or foreign matter in the water, so there are few devices required for construction, and the construction period can be shortened.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a usage state of the device of the present invention.

FIG. 2 is a sectional view of a main part of a pump

FIG. 3 is a bottom view of the pump showing the shape of the rotary cutter blade.

FIG. 4 is a bottom view of the pump showing the shape of the rotary cutter blade.

FIG. 5 is a partial side view of the rotary cutter blade.

FIG. 6 is a partial surface view of a rotary cutter blade.

[Explanation of symbols]

 5 is impeller 9 is inflow guide cylinder 10 is perforated plate 11 is rotary cutter blade 12 is suction guide cone

Claims (1)

[Scope of utility model registration request] 1. An impeller, a rotary cutter blade, and a suction guide cone are axially attached to a rotary shaft of a vertical submersible motor, and a suction side opening portion of a drain pipe casing surrounding the impeller,
A diameter-increasing inflow guide tube is continuously provided, and a perforated plate, which is adjacent to the rotary cutter blade in parallel with and adjacent to the rotary cutter blade in parallel and which constitutes a cutter device together with the rotary cutter, is fixed to the guide tube. In addition, the submersible pump is provided with a cutter device in which a frame body for preventing landing of the suction guide cone is fixed below the guide cylinder.