CN2115411U - Multi-purpose centrifugal pump capable of using as asynchronous motor - Google Patents

Abstract

The utility model discloses a multi-purpose centrifugal pump capable of being used as an asynchronous motor, which comprises a machine base, a stator, a rotor block, a centrifugal pump casing, a bearing seat, an axial thrust bearing, a bearing shim, a journal bearing, a power output shaft, a power output shaft sleeve, a bearing press cover, a guide vane, a guide part, and a bearing seat cushion ring. The utility model is characterized in that a rotor and an impeller are combined into one unit; the iron core of the stator and a three-phase winding are encapsulated into one unit by insulating material. The utility model can be used as a motor, and can also be used as a centrifugal pump. The utility model has the advantages that the phenomenon that the power disappears caused by leakage can be eliminated; the structure can be simplified; the faults can be reduced; the cost can be lowered.

Description

Multi-purpose centrifugal pump capable of using as asynchronous motor

The utility model relates to a kind of multipurpose asynchronous electrical motor centrifugal pump, and it both can convert electrical energy into mechanical energy and use as motor, and the rotation blade fluid pump that can make conveyance fluid again uses.

The basic structure of existing asynchronous motor is by fixing stator, rotor that freely rotates and marginal air gap three parts are formed, the main body of stator is unshakable in one's determination and three phase windings, winding is embedded in the equally distributed groove of interior circle unshakable in one's determination, rotor shaft and bearing fixing cover in two side ends, the defective of existing motor is: purposes is single, only uses as prime mover; When traffic overload, burn easily; The insulation degree is limited, and waterproof, protection against the tide, explosion-proof performance are poor.During with asynchronous motor and the supporting use of rotation blade fluid pump, need the coupling carry-over moment between the pto of motor and the pump shaft, the both is fixed on the same rigid foundation, motor also needs to be equipped with radiation fan, because pump shaft exposes to be easy to generate and sews, and need establish gland seal device for this reason.Equipment volume is big and heavy, and working link in service is many, breaks down easily.For overcoming above-mentioned deficiency, Chinese invention patent application number 87108136 discloses a kind of pump integrating electric motor with vane wheel, this invention is integrated motor and impeller, by the stator inboard impeller is arranged, the outside is made up of the cylindric solid of rotation that the excitation material of excitation effect constitutes, and has cancelled pump shaft, do the rotor rotation with solid of rotation, the acting in conjunction of blade and cylinder produces the lift conveyance fluid, and its shortcoming is to use as pump, can not use as motor.

The purpose of this utility model has provided a kind of asynchronous electric centrifugal pump of many usefulness that asynchronous motor and pump are combined as a whole, and it both can be used as motor and has used, and can be used as centrifugal pump again and uses.

Asynchronous electrical motor centrifugal pump is as shown in drawings by support 15, be contained in the stator 14 in the machine, be suspended in the rotor body in the stator cavity, the centrifugal pump shell of output terminal and bearing support 3, the diversion division of suction side and bearing support 18, and be contained in axial thrust bearing 4 in the bearing support, bearing shim 5, radial bearing 6, bearing gland 9 constitutes, it is characterized in that impeller with rotor and centrifugal pump is combined as a whole or is combined into fabricated rotor body, this rotor body is by pto 7, be contained in the impeller 10 of output terminal, be contained in the supporting rib 11 of endoceliac rotor body wall 13 of rotor and axle, rotor blade 16 constitutes, rotor body is with single magnetic material such as steel, iron or composite magnetic: copper steel, aluminum steel is made, pto and external isolation sealing, prevent to leak, the iron core of stator and three phase windings are packaged into an integral body with insulating material, to improve the sealed insulation performance of this machine, play waterproof, moistureproof, explosion-proof, the outlet protective housing 1 of this machine one end, air draft tube 2 is fixed by bolts on the flange of centrifugal pump shell and bearing support, the air-strainer 20 of the other end, air intake cover 19 successively with bolt because of on the flange that fixes on diversion division and bearing support 18.Produce rotating magnetic field after staor winding enters symmetrical sinusoidal current, rotor body moves in a circle along the direction of magnetic field rotation.

The utility model is characterized in that compared with the prior art the function that had both had motor uses as prime mover, has the function of rotation blade fluid pump again, uses as pump; Because impeller and rotor are combined as a whole, the therefore liquid that is transferred and enter the interior air of machine is entered by the entry end of this machine, in rotor body, exports from outlet end.Its advantage is: the phenomenon of stopping a leak, and simplify the structure and reduce the chance that breaks down, reduce maintenance expenses, reduce cost; Since the power loss that has reduced the friction of bearing packing and pump shaft and stopped a leak and cause, the efficient of raising pump; Liquid that the heat that produces in the machine is transferred or the absorption of air that enters, and outside the discharge machine, the equipment that effectively guarantees normally moves; When it uses as centrifugal pump, can be used as face-pumping use usually, also can be used as deep-well pump and use, also can put into water as submersible pump, the diving deep-well pump uses.

Description of drawings:

Accompanying drawing is the multipurpose asynchronous electrical motor centrifugal pump structural representation.

Number in the figure: 1, outlet protective housing; 2, air draft tube; 3, centrifugal pump shell and bearing support; 4, axial thrust bearing; 5, bearing shim; 6, radial bearing; 7, pto; 8, power take-off cover; 9, bearing gland; 10, impeller; 11, supporting rib; 12, packing ring; 13, rotor body wall; 14, stator; 15, support; 16, rotor blade; 17, guide vane; 18, diversion division and bearing support; 19, air intake cover; 20, air-strainer.

Below in conjunction with description of drawings the utility model embodiment: outlet protective housing 1, air draft tube 2 are fixed by bolts on the flange of centrifugal pump shell and bearing support 3 successively, axial thrust bearing 4 is housed in this bearing support, bearing shim 5, radial bearing 6, bearing gland 9 is pushed down the radial bearing outer shroud, uses bolt; Power take-off cover 8 is fixed on the bearing gland 9; Pto 7 and external isolation sealing with outlet end prevent to leak; With bolt centrifugal pump shell and bearing support 3 are fixed on packing washer 12 on the support 15; Rotor body is made up of pto 7, impeller 10, supporting rib 11, rotor body wall 13, rotor blade 16, and the shape of the rotor blade 16 in the rotor body forms with similar the casting with rotor body of axial-flow pump, also can be connected and fixed by welding or with bolt; The setting of the supporting rib 11 on the rotor body increases with the minimizing of rotor blade 16, and increase with rotor blade and reduce, even cancellation; Air intake cover 19 is fixed by bolts on diversion division and the bearing support 18, and air-strainer 20 is fixed on air intake cover 19 inlet flanges.Rotor body is suspended in stator interior, can rotate freely, and each joint seals with insulating material, makes these facility that excellent sealing performance be arranged, and need take off power take-off cover 8 when this machine uses as asynchronous motor, this moment rotor blade 16, impeller 10 plays the fan effect; When this machine uses as submersible pump or diving deep-well pump, need add filter screen, prevent that foreign matter from entering, outlet end centrifugal pump shell and bearing support outlet(discharge) flange are connected with pipeline at entry end diversion division and bearing support place; When this machine uses as general deep-well pump, need entrance guiding portion and bearing block flange are connected with lifting pipe, the entry end pto is connected with the deep-well pump transmission shaft by coupling.This machine can be made one step single sucking, single-stage double-suction, multistage double suction, multistage single suction, centrifugal vortex pump various ways.

Claims (2)

1, multipurpose asynchronous electrical motor centrifugal pump is contained in stator 14 in the machine, is suspended in the rotor body in the stator cavity by support 15, the centrifugal pump shell of output terminal and bearing support 3, the diversion division of suction side and bearing support 18 and be contained in axial thrust bearing 4 in the bearing support, bearing shim 5, radial bearing 6, bearing gland 9 constitute, the rotor and the impeller that it is characterized in that it are combined as a whole or are combined into fabricated rotor body, this rotor body is by pto 7, be contained in the impeller 10 of output terminal, be contained in the supporting rib 11 of endoceliac rotor body wall 13 of rotor and axle, rotor blade 16 constitutes; Stator 14 is packaged into an integral body by unshakable in one's determination and three phase windings with insulating material; Bearing gland 9 is pushed down the radial bearing outer shroud, is fixed by bolts on the bearing support; Pto 7 is from body two ends shaft, power take-off cover 8 covers pto 7, be fixed by bolts on the bearing gland 9, outlet protective housing 1, air draft tube 2 are fixed by bolts on the flange of centrifugal pump shell and bearing support 3, and air-strainer 20, air intake cover 19 are fixed by bolts on the flange of diversion division and bearing support 18.

2,, when it uses as motor, must take off the power take-off cover 8 of any end according to the described multipurpose asynchronous electrical motor centrifugal pump of claim 1.