CN100513827C

CN100513827C - Thermostable magnetic transmission apparatus

Info

Publication number: CN100513827C
Application number: CNB2005100414154A
Authority: CN
Inventors: 虞培清; 王洪群; 章志耿
Original assignee: ZHEJIANG GREAT WALL REDUCER CO Ltd
Current assignee: ZHEJIANG GREAT WALL REDUCER CO Ltd
Priority date: 2005-08-08
Filing date: 2005-08-08
Publication date: 2009-07-15
Anticipated expiration: 2025-08-08
Also published as: CN1730982A

Abstract

The present invention relates to transmission mechanism, and is especially magnetic transmission mechanism comprising tubular outer rotor with permanent magnet fixed to the inner wall, separating casing or plate and inner rotor. The outer rotor has several axial permanent magnet rows fixed to the inner wall, the inner rotor has soft magnet strips on the cylindrical surface in the positions corresponding to the permanent magnet rows and raised to form ribs, the magnetic conductors between the permanent magnet rows constitute magnetic path, and the permanent magnet rows and the soft magnet strips are distributed homogeneously along circumferential direction. Owing to the soft magnet strips without magnetism degradation caused temperature raising, the present invention is suitable for operation in high temperature environment.

Description

A kind of thermostable magnetic transmission apparatus

Technical field

The present invention relates to a kind of transmission device, more particularly is exactly magnetic drive device.

Background technique

Since the magnetic drives technological invention, magnetic drive is because it is converted into static seal with traditional motive sealing mode, therefore can reach very high sealing, can be applied to multiplely has the harsh occasion that requires to reaction region: as high pressure, condition of high vacuum degree and there is not the reaction of leakage.Magnetic drive device can be divided into two classes, cylindrical and face type.It is the interior magnet steel rotor assembly that permanent magnet and internal rotor body are formed that the structure of cylindrical all comprises an interior magnet steel that is roughly cylindricality usually, one covers on the outer steel rotor assembly that the tubular external rotor body that is fixed with permanent magnet on wherein the inwall that is the back-off cup-shaped is formed with interior magnet steel rotor assembly, between outer steel rotor assembly and interior magnet steel rotor assembly, be provided with and be the back-off cup-shaped equally substantially, the shielding can that non-magnetizer is made, driven shaft (as a stirring shaft) end is fixedly connected on the interior magnet steel rotor assembly, the outer steel rotor assembly is connected by the axle sleeve on it on output shaft of drive units such as motor, the annular sealing surface of shielding can is withheld on the flange of reactor or retort the reactor inner chamber and the external world is isolated fully, and power is magnet steel rotor and driven shaft in magnetic coupling reaches; The external rotor body of face type and internal rotor body have a rotation circular end surface that is oppositely arranged, and relatively along circumference permanent magnet is set on two end faces, and polarity are opposite, between the internal-external magnetic steel rotor assembly by magnetic force coupling transferring power.For health and corrosion resistant consideration; internal rotor and driven mixing component can adopt stainless steel and other metal materials to make usually; when temperature in the working room is very high; can conduct to internal rotor through metalwork raises the permanent magnet temperature on it; cause magnetic to descend; bonding force reduces, when serious even cause and can't normally move.

Summary of the invention

The objective of the invention is to for overcome prior art not enough provide a kind of can be in the higher temperatures working environment the high temperature resistant magnetic drive device of proper functioning.

The present invention solves the problems of the technologies described above the technological scheme that is adopted: a kind of thermostable magnetic transmission apparatus, comprise the tubular external rotor body that is fixed with permanent magnet on the inwall, separation sleeve and internal rotor body, it is characterized in that: described external rotor body inwall upper edge is circumferentially with the permanent magnet row that some row axially are provided with, the position corresponding with the permanent magnet row is provided with soft magnetic bodies bar equally vertically on the described internal rotor scapus face, described soft magnetic bodies bar protrudes in internal rotor scapus face and becomes the convex tendon shape, be equipped with magnet case near center axis between the described adjacent soft magnetic bodies bar and be interconnected to constitute flux path, described permanent magnet row and soft magnetic bodies bar are along circumferentially evenly distributing.

Be provided with as another kind of the present invention: a kind of thermostable magnetic transmission apparatus, comprise the external rotor body that is fixed with permanent magnet, isolating plate and internal rotor body, the internal rotor body is relative with external rotor body end face, external rotor body end face upper edge circumference is provided with some permanent magnet blocks, it is characterized in that: the permanent magnet blocks on the described external rotor body end face leaves the gap each other, be fixed with the soft magnetic bodies piece along circumference equally with the corresponding position of external rotor body end face permanent magnet blocks on the described internal rotor body end face, described soft magnetic bodies piece protrudes in internal rotor body end face, be equipped with magnet case near internal rotor body end face side between the described adjacent soft magnetic bodies piece and be interconnected to constitute flux path, described permanent magnet blocks and soft magnetic bodies piece are along circumferentially evenly distributing.

The present invention compared with prior art beneficial effect is: owing to what be provided with on the internal rotor scapus face is the soft magnetic bodies bar, rather than permanent magnet, so the temperature rise of internal rotor body can not cause magnetic to descend, bonding force reduces, therefore being adapted at working in the higher temperatures environment, is a kind of high temperature resistant magnetic drive device.

The invention will be further described below in conjunction with drawings and Examples.

Description of drawings

Accompanying drawing 1 is the specific embodiment of the invention 1 a structure sectional view;

Accompanying drawing 2 is the specific embodiment of the invention 1 a STRUCTURE DECOMPOSITION schematic representation;

Accompanying drawing 3 is an accompanying drawing 2A-A structure sectional view;

Accompanying drawing 4 is an accompanying drawing 2B-B structure sectional view;

Accompanying drawing 5 is the specific embodiment of the invention 2 structural representations;

Accompanying drawing 6 is the specific embodiment of the invention 2 STRUCTURE DECOMPOSITION schematic representation;

Accompanying drawing 7 is a magnet steel rotor assembly structural representation in the specific embodiment of the invention 2;

Embodiment 1

Present embodiment is example with the cylindrical; as Fig. 1; shown in 2; internal rotor body 3 is a cylindricality; external rotor body 1 is a tubular; be integrally formed with on the top and be used for the axle sleeve that is connected with the output shaft of drive units such as motor; circumferentially be fixed with some row outer steels formation outer steel rotor assemblies that permanent magnet is formed on the inwall; outer steel is arranged to permanent magnet row 4 vertically; concrete columns is by the power and the moment of torsion decision of required transmission; the position corresponding with permanent magnet row 4 is provided with soft magnetic bodies bar 5 equally vertically on internal rotor body 3 cylinders; as Fig. 3; shown in 4; be equipped with magnet case near center axis between the adjacent soft magnetic bodies bar 5 and be interconnected to constitute flux path; soft magnetic bodies bar 5 will protrude in internal rotor body 3 cylinders and become the convex tendon shape; permanent magnet row 4 and soft magnetic bodies bar 5 be even number preferably; and magnetic polarity is opposite between the adjacent permanent magnet row 4; permanent magnet row 4 preferably evenly distribute along circumference; such structure magnetic circuit is more reasonable; be provided with 6 permanent magnet row 4 and soft magnetic bodies bar 5 in the present embodiment altogether; the space that the soft magnetic bodies bar is 5 can be filled with the non-magnetizer material and be made whole one-tenth cylindric to reduce resistance; in order to simplify preparation process; improve performance; internal rotor body 3; magnet case and soft magnetic bodies bar 5 preferably are integral setting; integral body is made by soft magnetic material such as pure iron; the outer steel rotor assembly covers on interior magnet steel rotor assembly wherein; between outer steel rotor assembly and interior magnet steel rotor assembly, be provided with and be the back-off cup-shaped equally substantially; the separation sleeve 2 that non-magnetizer such as stainless steel are made; in order to strengthen decay resistance; it is high temperature resistant that internal rotor body 3 surfaces are wrapped with one deck; corrosion resistant protective layer 7, high temperature resistant as stainless steel or other; resistant material.

Embodiment 2

Present embodiment is example with the face type; as Fig. 5; shown in 6; the external rotor body 1 of face type and internal rotor body 3 are the discoid or cylindrical component that a side is provided with running shaft; end face is relative; running shaft is on same straight line; rotor body 1 end face upper edge circumference is provided with some permanent magnet blocks 8 outside; permanent magnet blocks 8 leaves the gap each other; be fixed with soft magnetic bodies piece 9 along circumference equally with external rotor body 1 end face permanent magnet blocks 8 corresponding positions on internal rotor body 3 end faces; soft magnetic bodies piece 9 protrudes in internal rotor body 3 end faces; as shown in Figure 7; also can fill with the non-magnetizer material makes end face smooth to reduce resistance; as shown in Figure 6; be equipped with magnet case near internal rotor body 3 end face sides between the described adjacent soft magnetic bodies piece 9 and be interconnected to constitute flux path; permanent magnet blocks 8 distributes along circumferentially preferably becoming even with soft magnetic bodies piece 9; external rotor body 1; 9 one-tenth even numbers of permanent magnet blocks 8 on internal rotor body 3 end faces and soft magnetic bodies piece; magnetic polarity is opposite between the adjacent permanent magnet piece 8; such structural design magnetic circuit is more reasonable; in order to simplify preparation process; improve performance; internal rotor body 3 preferably is integral setting with soft magnetic bodies piece 9; integral body is made by soft magnetic material such as pure iron; between outer steel rotor assembly and interior magnet steel rotor assembly, be provided with the isolating plate of making by non-magnetizer such as stainless steel 6; in order to strengthen decay resistance; it is high temperature resistant that internal rotor body 3 surfaces are wrapped with one deck; corrosion resistant protective layer, high temperature resistant as stainless steel or other; resistant material.

Claims

1, a kind of thermostable magnetic transmission apparatus, comprise the tubular external rotor body (1) that is fixed with permanent magnet on the inwall, separation sleeve (2) and internal rotor body (3), it is characterized in that: described external rotor body (1) inwall upper edge is circumferentially with the permanent magnet row (4) that some row axially are provided with, the position corresponding with permanent magnet row (4) is provided with soft magnetic bodies bar (5) equally vertically on described internal rotor body (3) cylinder, described soft magnetic bodies bar (5) protrudes in internal rotor body (3) cylinder and becomes the convex tendon shape, be equipped with magnet case near center axis between the described adjacent soft magnetic bodies bar (5) and be interconnected to constitute flux path, described permanent magnet row (4) and soft magnetic bodies bar (5) are along circumferentially evenly distributing.

2, thermostable magnetic transmission apparatus according to claim 1 is characterized in that: described external rotor body (1) inwall upper edge is circumferentially with the permanent magnet row (4) that even column axially is provided with, and magnetic polarity is opposite between the adjacent permanent magnet row (4).

3, thermostable magnetic transmission apparatus according to claim 1 and 2 is characterized in that: described internal rotor body (3), magnet case and soft magnetic bodies bar (5) are wholely set, and integral body is made by soft magnetic material.

4, thermostable magnetic transmission apparatus according to claim 1 and 2 is characterized in that: described internal rotor body (3) surface is wrapped with the corrosion-resistant protective layer of one deck (7).

5, thermostable magnetic transmission apparatus according to claim 3 is characterized in that: described internal rotor body (3) surface is wrapped with the corrosion-resistant protective layer of one deck (7).

6, a kind of thermostable magnetic transmission apparatus, comprise the external rotor body (1) that is fixed with permanent magnet, isolating plate (6) and internal rotor body (3), internal rotor body (3) is relative with external rotor body (1) end face, external rotor body (1) end face upper edge circumference is provided with some permanent magnet blocks (8), it is characterized in that: the permanent magnet blocks (8) on described external rotor body (1) end face leaves the gap each other, be fixed with soft magnetic bodies piece (9) along circumference equally with the corresponding position of external rotor body (1) end face permanent magnet blocks (8) on described internal rotor body (3) end face, described soft magnetic bodies piece (9) protrudes in internal rotor body (3) end face, be equipped with magnet case near internal rotor body (3) end face side between the described adjacent soft magnetic bodies piece (9) and be interconnected to constitute flux path, described permanent magnet blocks (8) and soft magnetic bodies piece (9) are along circumferentially evenly distributing.

7, thermostable magnetic transmission apparatus according to claim 6, it is characterized in that: described external rotor body (1), internal rotor body (3) end face upper edge circumferentially are respectively equipped with the permanent magnet blocks (8) and the soft magnetic bodies piece (9) of even number, and magnetic polarity is opposite between the adjacent permanent magnet piece (8).

8, according to claim 6 or 7 described thermostable magnetic transmission apparatus, it is characterized in that: described internal rotor body (3) is wholely set with soft magnetic bodies piece (9), and integral body is made by soft magnetic material.

9, according to claim 6 or 7 described thermostable magnetic transmission apparatus, it is characterized in that: described internal rotor body (3) surface is wrapped with the corrosion-resistant protective layer of one deck.

10, thermostable magnetic transmission apparatus according to claim 8 is characterized in that: described internal rotor body (3) surface is wrapped with the corrosion-resistant protective layer of one deck.