JP4041306B2 - underwater pump - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a submersible pump configured to suck in and discharge in an axial direction from a circumferential direction of a pump casing coupled to a submersible motor.
[0002]
[Prior art and its problems]
As shown in FIG. 5, in the submersible pump in which the suction port 104 opened in the axial direction passes through the annular water passage 403 on the outer periphery of the suction motor and is collectively discharged from the discharge port 105, the velocity energy from the impeller 107 is obtained. In order to efficiently convert the pressure into the pressure, the guide vane 111 needs to be provided between the impeller 107 and the annular water channel 403. Conventionally, the guide vane 111 is disposed between the suction casing 203 and the motor casing 303. A structure in which the disposed pump casing 103 is interposed is adopted, and the discharge port 105 is used in a state where a hose coupling 109 is coupled.
[0003]
However, in this conventional structure, the number of parts is large and the manufacturing cost is increased, and the shaft is lengthened, the overall length of the pump is increased, and the weight is increased. At the time of trial operation, there is an inconvenience that the pump casing 103 must be removed every time the gap between the impeller 107 and the suction casing 203 is adjusted, and the pump casing 103 is also removed for inspection and replacement of the impeller 107. There is a problem in workability and maintenance of assembly and disassembly.
[0004]
OBJECT OF THE INVENTION
An object of the present invention is to provide a submersible pump that is small and light, can be easily inspected and replaced with an impeller, and can be manufactured at low cost.
[0005]
[Structure of the invention]
Water pump according to the present invention is a submersible pump in the form to be discharged from the circumferential side direction of the pump casing is combined with the submersible motor to the suction direction, the pump casing an impeller on the load side Shirubenobe tip of the motor shaft It is installed so that it does not protrude from the end surface of the discharge port, and a suction port is opened in the circumferential direction, and the outer periphery of the discharge port opened at the tip of the ring wall surrounding the impeller is formed at the flange joint edge, and the guide vane boss The guide vanes extend radially from the outer circumference of the hose coupling, and the protruding tip is connected to the inner surface of the peripheral wall of the hose coupling, and there are a plurality of tapered taper projection steps on the outer peripheral wall of the hose coupling toward the opening tip. the open end periphery of the hose coupling base provided formed in the flange joint edges of substantially the same diameter as the flange joint edge of the discharge port side, the flange joint edges and the hose coupling of the discharge port side A flange joint edges to abut the opposing shaped and configured to be coupled together form the two flange joint edges to each other and fastened detachably by clamper.
[0006]
【Example】
The embodiment will be described below with reference to the embodiment shown in FIGS.
[0007]
1 is a submersible motor, 2 is a motor shaft, and 3 is a pump casing coupled to the submersible motor 1. A suction port 4 is opened in the circumferential direction, and a discharge port 5 is opened at the tip of the annular wall. The load side extending portion of the motor shaft 2 is supported by a sliding bearing 6 in the central portion of the pump casing 3, and the impeller 7 is mounted on the leading end portion thereof so as not to protrude from the end face of the discharge port 5 of the pump casing 3 . and aspects and surrounds the outer periphery of the impeller 7 by the ring wall, the mouth end outer periphery of the discharge port 5 is formed in the flange joint edge 8. Reference numeral 9 denotes a hose coupling in which a plurality of tapered taper protrusion steps are provided on the outer peripheral surface of the peripheral wall 12 connected to the discharge port 5 toward the front end of the opening. The guide vanes 11 are arranged radially from the outer periphery of the guide vane boss 10. And the tip end of the overhang is connected to the inner surface of the hose coupling peripheral wall 12, and the outer periphery of the open end of the base of the peripheral wall 12 is flange joint edge 13 having substantially the same diameter as the flange joint edge 8 on the discharge port 5 side. To form. These flange joint edges 8 and 13 are preferably inlay structures. The flange joint edge 8 on the discharge port 5 side and the flange joint edge 13 on the hose coupling 9 side are abutted against each other, and the flange joint edges 8 and 13 are detachable with a one-touch clamper 14 such as a ferrule type. And are joined together.
[0008]
Since the speed energy from the impeller 7 is efficiently converted into pressure by the guide vane 11 provided in the hose coupling 9, no guide vane is required in the pump casing 3. Further, as illustrated in FIGS. 3 and 4, if the hose couplings 9 having different opening diameters are prepared, one pump can be used as a plurality of pumps having different diameters.
[0009]
【The invention's effect】
According to the present invention, as in the conventional pump casing suction casing and the discharge casings grayed and the separate no need to have a structure, can be reduced in size and weight of the pump with parts can be manufactured in small low cost, the blade during commissioning It is not necessary to remove the pump casing for adjusting the centering of the car, it is sufficient to remove the hose coupling, and there is an advantage that it is excellent in workability and maintainability.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view of a submersible pump of the present invention.
2 is a longitudinal side view showing a state in which a hose coupling has been removed from the state of FIG.
FIG. 3 is a half sectional view of a hose coupling in the submersible pump of the present invention.
4 is a half sectional view of a hose coupling in the submersible pump of the present invention, showing an example in which the diameter of the tip opening is larger than that of the hose coupling of FIG.
FIG. 5 is a longitudinal side view illustrating a conventional submersible pump.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Submersible motor 2 Motor shaft 3 Pump casing 4 Suction port 5 Discharge port 7 Impeller 8 Flange joint edge 9 Hose coupling 10 Guide vane boss 11 Guide vane
12 peripheral wall 13 flange joint edge 14 clamper

Claims (1)

A submersible pump configured to discharge from the circumferential direction of a pump casing coupled to a submersible motor in the direction of the suction shaft, so that the impeller does not protrude from the discharge port end surface of the pump casing at the load side extending tip of the motor shaft. Installed, the suction port is opened in the circumferential direction, the outer periphery of the discharge port opened at the tip of the ring wall surrounding the impeller is formed at the flange joint edge, and the guide vane is radially formed from the outer periphery of the guide vane boss The hose coupling base of the hose coupling base is provided with a plurality of tapered taper protrusion steps provided on the outer peripheral surface of the hose coupling toward the front end of the opening . The outer periphery of the open end is formed as a flange joint edge having the same diameter as the flange joint edge on the discharge port side, and the flange joint edge on the discharge side and the flange joint edge on the hose coupling side are opposed to each other. Is abutting, water pump, characterized in that for coupling together form the two flange joint edges to each other and fastened detachably by clamper.

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