CN201119249Y - a shield - Google Patents

Abstract

The utility model discloses a shielding sleeve, which relates to an improvement to a shielding sleeve structure of a shielding electric pump. The utility model provides the shielding sleeve which can enhance the efficiency of the shielding type motor. The utility model comprises a shielding sleeve, the utility model has the structural key points that the middle of the shielding sleeve is made of magnetic conductive material corresponding to a rotor iron core or a stator iron core, and the non-magnetic conductive material is arranged outside the middle magnetic conductive material of the shielding sleeve.

Description

a shield

Technical field:

The utility model relates to the improvement of the structure of a shielding sleeve of a shielded electric pump.

Background technique:

Canned electric pump is composed of canned motor and pump. The stator shielding sleeve and rotor shielding sleeve of shielded motors are usually made of non-magnetic materials, which increases the effective non-magnetic gap between the stator and the rotor, reaching several times the air gap of ordinary motors; resulting in increased power consumption of electric pumps Large, the efficiency is much lower than the ordinary motor with the same power and the same number of poles, and the power factor is lower.

Utility model content:

The utility model aims at the above problems and provides a shielding sleeve which can improve the efficiency of a shielded motor.

In order to achieve the above object, the utility model adopts the following technical scheme. The utility model includes a shielding sleeve. The main points of the structure are that the middle of the shielding sleeve is a magnetically conductive material corresponding to the rotor core or stator core, and the outer portion of the shielding sleeve is a magnetically conductive material. non-magnetic material.

The beneficial effects of the utility model:

Since the middle of the shielding sleeve of the present invention is a magnetically conductive material corresponding to the rotor core or the stator core, the outer portion of the middle magnetically conductive material of the shielding sleeve is a non-magnetically conductive material; the effective non-magnetically conductive gap between the stator and the rotor is greatly reduced , can achieve the same air gap as that of ordinary motors; the efficiency and power factor of shielded motors are greatly improved.

Description of drawings:

Fig. 1 is a structural representation of the utility model;

Fig. 2 is an example diagram of the application of the shielding sleeve of the present invention to a shielded motor.

Detailed ways:

The utility model comprises a shielding sleeve 1, the middle of the shielding sleeve 1 is a magnetically conductive material part 2 corresponding to the rotor 5 iron core or the stator 6 iron core, and the outer part of the magnetically conductive material part 2 in the middle of the shielding sleeve 1 is a non-magnetically conductive material part 3.

The thickness of the shielding sleeve 1 may be 0.5 mm.

The shielding sleeve 1 of the utility model can be used as the stator shielding sleeve 1 of the shielded motor 4 and also can be used as the rotor shielding sleeve 1 of the shielded motor 4 .

The shielded electric pump includes a pump 9 and a shielded motor 4. Between the shaft 8 and the housing 7 of the shielded motor 4 are a stator 6 and a rotor 5. The stator 6 and the rotor 5 are respectively provided with a shielding sleeve 1, and the stator 6 has an iron core and a rotor. 5. The iron core corresponds to the middle magnetically permeable material part 2 of the shielding case 1 respectively, and the outside of the middle magnetically permeable material part 2 of the shielding case 1 is a non-magnetically permeable material part 3.

Claims (2)

1, a kind of housing, comprise housing (1), the centre that it is characterized in that housing (1) is non-magnet material part (3) for corresponding to rotor (5) iron core or stator (6) permeability magnetic material part (2) unshakable in one's determination outside the middle permeability magnetic material part (2) of housing (1).

2, a kind of housing according to claim 1, the thickness that it is characterized in that housing (1) is 0.5 millimeter.

Images