CN2224941Y

CN2224941Y - Planar motor underwater pump

Info

Publication number: CN2224941Y
Application number: CN 93247119
Authority: CN
Inventors: 刘夺魁
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-08
Filing date: 1993-12-08
Publication date: 1996-04-17
Anticipated expiration: 2003-12-08

Abstract

The utility model relates to a planar motor type underwater pump. The utility model is characterized in that a motor drives the water pump to operate; the rotor and the stator of the motor are all the disc shape, and the rotor and the stator of the motor are respectively and independently sealed in the upper and the lower shell bodies of the motor; the shell body provided with the stator is provided with a one-way air exhaust valve and a waterproof junction box; the rotor is coaxial with the impeller of the interior of the pump body; the shaft end is provided with a regulating screw nut. The utility model does not change the electrical characteristic of the original squirrel-cage type induction motor, solves the technical problem that the stator winding of the motor is submerged in the water and is not immersed, and then extends the service life of the submersible pump, reduces the cost, and is convenient for manufacturing and repairing.

Description

Planar motor formula submersible pump

The utility model relates to a kind of submersible pump.

Existing various types of submersible pumps all are on the squirrel cage motor rotor shaft water pump vane to be housed, and have therefore adopted various rotating sealing device on axle, solve the immersion problem that enters in the motor casing from here, destroys stator winding insulation.But complete machine is immersed in the water during owing to submersible pump work, it is too high that the sealing load of the rotor shaft of high speed rotating can not be done, therefore no matter all impossible thoroughly good seal of which kind of form, temperature raises in the motor casing because the heat of electric generation can make during pump work, air pressure increases, when air pressure is increased to certain value, gas can be broken through sealing part and discharge, but after water pump quits work, motor casing is subjected to the cooling of water, and temperature reduces, and the shell internal air pressure also will descend, when forming certain negative pressure the water that drops to outside housing, water just is inhaled in the motor casing by rotary seal place, uses submersible pump especially discontinuously, and the water yield of suction will be more, stator winding insulation is destroyed, so that burn.

The purpose of this utility model is: a kind of planar motor formula submersible pump is provided, it can make the stator and the rotatable parts packing of motor, fixing seal in electric machine casing, thereby keep the constant waterproof problem that thoroughly solves motor windings of electrical characteristic of original cage type induction motor simultaneously.

The technical solution of the utility model is: a kind of planar motor formula submersible pump, include electric machine casing, rotor and stator in the electric machine casing, the pump housing, the pump housing interior and the impeller of rotor coaxial and the bearing of supporting revolving shaft that electric machine casing is outer, it is characterized in that: the stator of disc-shape is contained in the electric machine casing bottom that has one-way exhaust valve and waterproof junction box, the corresponding setting mutually of the rotor of disc-shape and stator is contained in the top of electric machine casing, and nonmetal seal diaphragm is housed between stator and the rotor.

The following wire casing of present technique is located at the upper surface of stator iron core, and this groove is justified the mind-set circumference by oneself and is ray shape, and staor winding is housed in the groove, and rotor, staor winding are corresponding, and the terminal of staor winding is connected on the waterproof junction box.These structures compared with the prior art, substance is consistent.

Principle of the present utility model is: having disc-shape rotor and stator is the interior column rotor of existing squirrel cage motor and the alteration of form of tubular stator, and structural principle does not change, the stator that this change in shape is convenient to have winding separates with rotational parts, rotor and stator are independent sealed respectively in housing, keep the electrical characteristic of original motor constant again, when the housing internal cause work heat production that stator is housed and air pressure when raising, can cut down exhaust by unidirectional exhaust, when the certain negative pressure of generation is caught a cold in termination of pumping, because the very high fixed seal ring of sealing load is arranged, water does not advance in the stator chamber, has therefore thoroughly solved the immersion problem of motor stator winding.The advantage of present technique is: destroyed because the insulation winding is difficult for, and prolonged working life of submersible pump.After changing the shape of motor, the utilization ratio of silicon steel plate is improved greatly, the assembling of motor, easy to maintenance, the weight saving of complete machine, cost reduces.

Below in conjunction with description of drawings embodiment of the present utility model.

Accompanying drawing is the structural representation of the utility model planar motor formula submersible pump.

Among the figure, electric machine casing is divided into upper shell (10) and lower shell body (14), the bottom surface of lower shell body (14) is sealed, the side has unidirectional exhaust to cut down the waterproof junction box (15) that (16) and power supply lead wire are used, the stator (12) of motor is housed in the lower shell body (14), this stator is disc, the upper surface of stator iron core is provided with down wire casing, staor winding is housed in the groove, the terminal of winding is connected on the waterproof junction box (15), the disk rotor (11) of corresponding setting with stator is housed, in the rotor (11) in the upper shell (10), cylindrical is provided with conductive hoop, has several conductors to connect between two rings, single armed rotating shaft (5) is housed on rotor iron core, nonmetal dividing plate (13) is housed between stator and the rotor, makes stator and rotor independent sealed respectively in last, in the lower shell body, on, there is seal ring the lower shell body joint.The pump housing (7) is contained in above the upper shell of rotor outside, impeller (6) is housed in the pump housing (7), two bearing boxs are set above the upper shell, in the single armed rotating shaft (5) of rotor (11) impeller (6) is housed, this is supported by the bearing in the bearing box (3), (4), (9), and the single armed roller end is equipped with that (1), (8) are the sealing covers of bearing box among the nut (2) of adjusting rotor and stator gap, the figure.The import and export of submersible pump are located on the pump housing.Working procedure has squirrel-cage motor identical with oneself.

Claims

1, a kind of planar motor formula submersible pump, include rotor and stator in electric machine casing, the electric machine casing, the pump housing, the pump housing interior and the impeller of rotor coaxial and the bearing of supporting revolving shaft that electric machine casing is outer, it is characterized in that: the stator of disc-shape is contained in the electric machine casing bottom that has one-way exhaust valve and waterproof junction box, the rotor of disc-shape and stator corresponding setting mutually, be contained in the top of electric machine casing, nonmetal seal diaphragm is housed between stator and the rotor.