CN2056549U

CN2056549U - Air-tight sealing three-phase asynchronous motor for water cooling furnace

Info

Publication number: CN2056549U
Application number: CN 89206396
Authority: CN
Inventors: 蒋文伯; 张纪勇; 徐彦凯; 彭中宜; 仇化民
Original assignee: HARBIN NO2 MOTORMAKER
Current assignee: HARBIN NO2 MOTORMAKER
Priority date: 1989-04-22
Filing date: 1989-04-22
Publication date: 1990-04-25

Abstract

The utility model relates to a sealing three-phase asynchronous motor for a water cooling furnace, which solves the problems of poor sealing effect, high cost, inconvenient repairing, etc. of the present motor with a few or no oxidizing furnace. The utility model is characterized in that sealing rings are arranged on the upper end cover of a casing, the lower end cover of the casing and the wire connecting cover; the casing and the interior of the lower end cover are cast into a cavity with a water inlet and a water outlet. The utility model has the advantages of simple structure, low cost, convenient maintenance, etc. and is the ideal special motor with few or no oxidizing furnace in heat-treatment industry.

Description

Air-tight sealing three-phase asynchronous motor for water cooling furnace

A kind of stove sealed electric-motor.Especially be exclusively used in less, the water-cooled furnace on the non-oxidation heat treatment electric furnace is with the sealing threephase asynchronous.

Quality in order to guarantee that workpiece gas quenching in the stove is handled is positioned at the motor that plaing on the bell drags body of heater inner blower, oily agitator arm effect, must completely cut off extraneous air and enter in the body of heater, makes in the stove really to be in less, to carry out hot working under the non-oxidation state.At present, be used for less, non-oxidation heat treatment electric furnace (as controlled atmosphere generator, vacuum furnace etc.) motor mainly contains two kinds, a kind of is to add sealing ring on the common electric machine shaft extension, forms movable sealing structure; Another kind is the steel seal closure that adds volume eaves tubular between the stator and rotor of motor, adds that between steel seal closure and end cap a sealing ring forms static seal structure.The former, because motor shaft directly contacts with sealing ring, ring wear is fast, need often to change, be very untimely but often change sealing ring.Therefore, less, non-oxidation furnace often is operated in the non-tight state, influenced the quality of hot working workpiece; Though latter's good sealing effect, complex process, the steel seal closure of cost height, particularly tubular passes the stator and rotor air gap, has not only influenced motor performance, and has brought very big difficulty to electrical machmary maintenance, even destroys the steel seal closure earlier, could repair motor.

The utility model purpose is, design a kind of simple in structure, cost is low, easy to maintenance, the water-cooled furnace that has the water cooling cavity is with the sealing threephase asynchronous.

The utility model technical solution is: add sealing ring in casing and the upper and lower end cap and the terminal box cooperation place that have flange, form the motor case static seal system of an integral body.In addition, casing and flange cap are cast the cavity body that has import and export, in fill recirculated water, prevent in the electric furnace that temperature imports in the motor and guarantee that motor has good heat sinking function.

The utility model utilizes the static seal structure at above-mentioned three positions, has saved the steel seal closure in the existing motor, greatly reduces cost, has improved motor performance, has advantages such as easy to maintenance, good sealing effect.

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

Accompanying drawing is the utility model structural representation.

In the accompanying drawings, 1 is that motor shaft, 2 is that bottom end cover water inlet, 3 is that bottom end cover cooling chamber, 4 is that bottom end cover, 5,13,18 is that sealing ring, 6 is that casing water inlet, 7 is that casing cooling chamber, 8 is that stator core, 9 is that rotor core, 10 is that the rotor wind wing, 11 is that casing, 12 is that stator winding, 14 is that upper end cover, 15 is that bearing, 16 is that casing delivery port, 17 is that terminal box, 19 is the bottom end cover delivery port.

When real work, this motor is contained on the electric furnace, a sealing ring is arranged between electric machine flange end cap and the electric furnace loam cake, electric furnace and motor internal are in equal state and separate with the external world, can prevent like this that outside air from entering makes the workpiece oxidation in the stove, also can prevent the furnace atmosphere effusion and cause the furnace atmosphere instability, influence the heat treated part quality, the water-cooling structure of flange end cap is to be used to prevent that temperature is imported in the motor in the stove, form thermal insulation layer, the casing cooling structure is that the heat that motor self sends is taken away, and reduces electric machine temperature rise.

Claims

1, a kind of water-cooled furnace that comprises stator, rotor, end cap and support is with sealing threephase asynchronous, and it is characterized in that: casing 11 links to each other with the bottom end cover 4 that has flange, upper end cover 14 and terminal box 17 respectively by sealing ring 5,13,18.

2, water-cooled furnace according to claim 1 is characterized in that: be cast with casing cooling chamber 7 and bottom end cover cooling chamber 3 respectively in casing 11 and bottom end cover 4 with the sealing threephase asynchronous.