CN2377764Y

CN2377764Y - Immersible electric machine

Info

Publication number: CN2377764Y
Application number: CN 99224245
Authority: CN
Inventors: 郑锡铎
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-22
Filing date: 1999-06-22
Publication date: 2000-05-10
Anticipated expiration: 2009-06-22

Abstract

The utility model relates to a diving motor. A shell is in a stainless steel cylinder integral structure with a flat bottom. A stainless steel shielding sleeve with a cylinder flat bottom and a flanged upper part is arranged between a stator and a rotor. A wall correspondingly as high as the rotor has a thickness not larger than 2 mm. The upper part of a shaft is provided with a thrust bearing provided with a mechanical seal. A motor winding is irrigated by epoxy resin. An end cap is pressed in a flange on the upper end of the shell. A connecting rack is fixed on the end cap. The mechanical seal is sheathed on the upper part of the shaft and is provided with a sand connecting device which is composed of a sand preventing liner, a seal, an elastic ring and a sand preventing jacket, wherein, the sand preventing jacket is fixed on the connecting rack. The utility model has the advantages of compact structure and the waterproof shielding sleeve arranged between the rotor and the stator.

Description

A kind of submersible motor

The utility model belongs to the design and the manufacturing technology field of submersible motor.

Submersible motor is by being contained in rotor on the axle, being contained in stator, gland seal device, sand prevention device and related components thereof in the casing.There is some weak point in existing submersible motor: shell by tubular shell and up and down end cap form, by bolt, the sealing relatively the difficulty; Thrust bearing is contained in the lower end of axle, is not easy to dismounting; Gland seal device, what have uses soft packing, weak effect, the life-span is short; Minority adopts mechanical seal, and is effective.But because sand prevention device too simple (having only a spring and a rubber cushion), dustproof effect are poor, can cause the axle envelope malfunctioning when minimum graininess foreign matter enters, water enters and causes burn-down of electric motor in the motor.

The purpose of this utility model is that it is the submersible motor that has housing between overall structure, rotor and the stator that a kind of casing is provided.

The technical solution of the utility model is:

Structure to existing submersible motor is done following improvement:

1. casing adopts stainless steel stretched single-piece frame, saves the trouble of lower cover sealing;

2. between stator and rotor, install the housing of the flat top of stainless steel tubular flange additional.High-order bit such as housing and rotor thickness must not surpass 2mm, and with the supplementary load loss and the raising electric efficiency of restriction motor, thereby the whole technical indicators that guarantee submersible motor meet national standard;

3. be contained in the motor windings pouring epoxy resin in the insulating case.Purpose is to strengthen its mechanical strength, reduces the temperature rise amplitude, prevents that the surrounding air globule that forms that is condensed from burning winding attached to causing coil turn-to-turn short circuit on the winding;

4. the thrust bearing with submersible motor moves to a top by the axle lower end so that dismounting and with the supporting use of mechanical seal;

5. adopt the sand prevention device of forming by sand prevention outer cover, interior cover, seal and spring coil, prevent that particulate material from entering mechanical seal.

Below in conjunction with accompanying drawing planform of the present utility model is done and to be specified

Accompanying drawing is the utility model structural representation

Cover 20-sand prevention outer cover 21-cable 22-link 23-elastic ring 25-mechanical seal 27-mechanical seal spring in 1-motor windings 2-bearing 3,11-bearing pedestal 4-housing 5-casing 6-rotor 7-axle 8-stator 9-insulating case 10,12,17,19,24,26-seal 13-thrust bearing 14-end cap 15, the 16-bolt 18-sand prevention

Casing 5 is the flat overall structure of stainless steel drum type brake, be contained on the axle 7 rotor 6 be contained in The stainless steel shielding cover 4 that a cylindric flat top flange is arranged between the stator 8 of casing 5 inwalls, The wall thickness of itself and rotor 6 contour corresponding positions is not more than 2mm. Bearing block 3,11 is contained in respectively screen Cover bottom and the middle and upper part of cover 4. Between bearing block 11 and housing 4 inwalls seal 10 is arranged. Axle 7 On the overcoat of bearing 2 be bumped in the bearing block 3,11. Thrust bearing 13 is equipped with on bearing block 11 tops. Be mechanical seal 25 and spring 27 thereof above the thrust bearing 13. Be contained in the insulation sleeve 9 motor around The pouring of group 1 usefulness epoxy resin, housing 4 upper end flange outer walls and casing 5 inwall contact positions have close Sealing 12. End cap 14 is fitted in the casing 5 upper end flange.

Link 22 is fixed on the end cap 14 through bolt 15, mechanical seal 25 and spring 27 suits thereof Be above the thrust axle sleeve 13 on axle 7 tops. Sand-proof device above the mechanical seal 25, this device From bottom to top successively by sand prevention inner sleeve 18, seal 19, elastic ring 23 and 20 assemblings of sand prevention outer cover Form. Seal 17 is arranged between mechanical seal 25 and the sand-proof device. Sand prevention outer cover 20 is through bolt 16 Be fixed on the link 22. There is seal 24 at cable 21 places of drawing.

The utility model is mainly used in underwater operation, as in order to drive immersible pump etc.

Manufacture method of the present utility model is the general skill of substantially making according to existing submersible motor Art is made, and wherein casing and housing stretch with corrosion resistant plate, the housing middle part namely with turn to The palpus right boring of the high-order bits such as son makes its thickness smaller or equal to 0.2mm.

The utility model has the advantages that, compact conformation, sand-proof device is reliable, can not intake in the machine, Can guarantee inboard bearing service life. Between rotor, the stator housing is arranged, can not burn because of water inlet Ruin motor, the complete machine long service life.

Embodiment:

Process, purchase parts by the structure of accompanying drawing and the explanation of specification the 5th part, assemble by specification requirement and can implement the utility model.

Claims

A kind of submersible motor, by casing, be fixed on the stator of casing inner wall, be contained in the rotor on the axle, seal and relevant parts are formed, it is characterized in that casing (5) is the flat overall structure of stainless steel drum type brake, be contained in the stator (8) of casing (5) inwall and be contained in the stainless steel shielding cover (4) that a cylindric flat top flange is arranged between the rotor (6) of axle on (7), high-order bit wall thickness≤2mm such as it is corresponding with rotor (6), bearing pedestal (3,11) be contained in the bottom and the middle and upper part of housing (4) respectively, between bearing pedestal (11) and housing (4) inwall seal (10) is arranged, the overcoat of the bearing (2) on the axle (7) is bumped into bearing pedestal (3,11) in, thrust bearing (13) is equipped with on bearing pedestal (11) top, be mechanical seal (25) and spring (27) thereof above the thrust bearing (13), the motor windings (1) that is contained in the insulating case (9) is watered with epoxy resin, there is seal (12) housing (4) upper end flange outer wall and casing (5) inwall contact position, end cap (14) is fitted in the flange of casing (5) upper end

Link (22) is fixed on the end cap (14) through bolt (15), mechanical seal (25) and spring (27) thereof are sleeved on axle (7) top, are above the thrust axle sleeve (13), be the sand prevention device above the mechanical seal (25), this device is assembled by cover (18), seal (19), elastic ring (23) and sand prevention outer cover (20) in the sand prevention from bottom to top successively, seal (17) is arranged between mechanical seal (25) and the sand prevention device, sand prevention outer cover (20) is fixed on the link 22 through bolt (16), and there is seal (24) at cable (21) place of drawing.