CN2830725Y

CN2830725Y - Underwater shielded electrical pump

Info

Publication number: CN2830725Y
Application number: CN 200520021865
Authority: CN
Inventors: 崔剑; 潘波; 梁宝贵; 李作维; 孙振宇
Original assignee: Jiamusi Electric Machine Co Ltd
Current assignee: Jiamusi Electric Machine Co Ltd
Priority date: 2005-10-28
Filing date: 2005-10-28
Publication date: 2006-10-25
Anticipated expiration: 2015-10-28

Abstract

The utility model relates to an underwater shielded electrical pump which is composed of a pump body, a blade wheel, a bottom chuck, a mechanical sealing moving ring, a mechanical sealing stationary ring, a bearing 1, a cover cylinder, a stator, a rotor, a guide cylinder, a bearing 2 and a top chuck, wherein the cover cylinder is covered on the bearing 1; the top chuck is covered on the bearing 2; the bearing 1 and the bearing 2 are respectively arranged on the rotor by the top chuck and the bottom chuck; the bottom chuck and the top chuck are respectively fixed to the stator which is arranged in the guide cylinder; the blade wheel and the cover cylinder are respectively arranged on the rotor; the pump body and the guide cylinder are connected; the mechanical sealing stationary ring is fixed to the bottom chuck; the mechanical sealing moving ring is fixed to the rotor. The utility model has the advantages of simple structure, long service life of the bearings, no need of external cooling water of the external part a motor and great energy resource saving. The utility model can transport a large number of mediums with large granules and can work in the working environment with nuclear radiation.

Description

Shielded electric-pump under the liquid

Technical field: the utility model relates to shielded electric-pump under a kind of liquid, especially can be immersed in the shielded electric-pump of proper functioning under the liquid.

Background technique: at present, there is following shortcoming in the shielded electric-pump device under the common liquid: 1, bearing all is a sliding bearing, and sliding bearing is short working life, greatly about about 5000 hours; 2, must feed cooling liquid in the motor cavity, make structure complicated; 3, motor is outside must feed external cooling water, has wasted the energy greatly; 4, can not carry and contain a large amount of oarse-grained media; 5, can not be operated in the working environment with nuclear radiation.

Summary of the invention: the purpose of this utility model is to overcome above-mentioned shortcoming, and shielded electric-pump under a kind of liquid is provided, and it has solved shielded electric-pump sliding bearing weak point in working life under the common liquid, can not be operated in the medium problem of the working environment with nuclear radiation.The purpose of this utility model is achieved in that under the liquid that shielded electric-pump is by the pump housing, impeller, step, mechanical sealing linkage ring, mechanical sealing static ring, bearing 1, cover tube, stator, rotor, guide cylinder, bearing 2, upper bearing bracket formation.On bearing 1, be covered with tube, be covered with upper bearing bracket on the bearing 2, bearing 1 is installed on the rotor by step, bearing 2 is installed on the rotor by upper bearing bracket, step and upper bearing bracket are separately fixed on the stator, stator is contained in the guide cylinder, impeller is installed on the rotor respectively with the cover tube, the pump housing is connected with guide cylinder, gapped between the step and the pump housing, mechanical sealing static ring is fixed on the step, and mechanical sealing linkage ring is fixed on the rotor, and a sealing surface is arranged between mechanical sealing static ring and the mechanical sealing linkage ring.Shielded electric-pump has prolonged the working life of bearing under this liquid, need not feed cooling liquid in the motor cavity, make and simplify the structure, the motor outside needn't feed external cooling water, saved the energy greatly, it can carry a large amount of oarse-grained media, can be operated in the working environment with nuclear radiation.

Description of drawings:

Accompanying drawing is the structural representation of shielded electric-pump under the utility model liquid.

1-pump housing 2-impeller 3-step

4-mechanical sealing linkage ring 5-mechanical sealing static ring 6-bearing 1

7-cover tube 8-stator 9-rotor

10-guide cylinder 11-bearing 2 12-upper bearing brackets

Embodiment: describe most preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing, shielded electric-pump is made of: the pump housing (1), impeller (2), step (3), mechanical sealing linkage ring (4), mechanical sealing static ring (5), bearing 1 (6), cover tube (7), a stator (8), rotor (9), guide cylinder (10), bearing 2 (11), upper bearing bracket (12) under the liquid.On bearing 1 (6), be covered with tube (7); be covered with upper bearing bracket (12) on the bearing 2 (11); make bearing (6) and bearing (11) lower end form the air cavity of a sealing; protected bearing not to be subjected to the etch of medium; bearing 1 (6) is installed on the rotor (9) by step (3); bearing 2 (11) is installed on the rotor (9) by upper bearing bracket (12); step (3) and upper bearing bracket (12) are separately fixed on the stator (8); stator (8) is contained in the guide cylinder (10); impeller (2) is installed in respectively on the rotor (9) with cover tube (7); the pump housing (1) is connected with guide cylinder (10); gapped between the step (3) and the pump housing (1); mechanical sealing static ring (5) is fixed on the step (3); mechanical sealing linkage ring (4) is fixed on the rotor (9); between mechanical sealing static ring (5) and the mechanical sealing linkage ring (4) sealing surface is arranged, can prevent that solid particle from entering in the motor cavity.

Claims

1, shielded electric-pump under a kind of liquid, it is by: the pump housing, impeller, step, mechanical sealing linkage ring, mechanical sealing static ring, bearing 1, cover tube, stator, rotor, guide cylinder, bearing 2, upper bearing bracket formation, it is characterized in that: on bearing 1, be covered with tube, be covered with upper bearing bracket on the bearing 2, bearing 1 is installed on the rotor by step, bearing 2 is installed on the rotor by upper bearing bracket, and step and upper bearing bracket are separately fixed on the stator, and stator is contained in the guide cylinder.

2, shielded electric-pump under the liquid according to claim 1 is characterized in that: impeller is installed in respectively on the rotor with the cover tube, and the pump housing is connected with guide cylinder, and is gapped between the step and the pump housing.

3, shielded electric-pump under the liquid according to claim 1, it is characterized in that: mechanical sealing static ring is fixed on the step, and mechanical sealing linkage ring is fixed on the rotor, and a sealing surface is arranged between mechanical sealing static ring and the mechanical sealing linkage ring.