CN214045270U

CN214045270U - Permanent magnet motor

Info

Publication number: CN214045270U
Application number: CN202022980892.XU
Authority: CN
Inventors: 梅谦; 陈传龙; 贾小燕
Original assignee: Anhui Mingteng Permanent Magnetic Machinery & Electrical Equipment Co ltd; Beijing Mingcheng Technology Development Co ltd
Current assignee: Anhui Mingteng Permanent Magnetic Machinery & Electrical Equipment Co ltd; Beijing Mingcheng Technology Development Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-08-24
Anticipated expiration: 2030-12-10

Abstract

The embodiment of the utility model provides a permanent magnet motor, including pivot, rotor core, stator core, casing and front end housing and rear end cap, the casing is connected with the periphery of front end housing and the periphery of rear end cap respectively at the axial direction's of pivot both ends in order to enclose into first cavity, its characterized in that, permanent magnet motor still includes: the flange transition seat is arranged on the rotating shaft and is positioned outside the first cavity, and the flange transition seat and the front end cover enclose a second cavity surrounding the rotating shaft; the mechanical sealing structure is arranged on the rotating shaft and is positioned in the second cavity, and two ends of the mechanical sealing structure in the axial direction of the rotating shaft respectively extend into the space between the rotating shaft and the flange transition seat and the space between the rotating shaft and the front end cover; and the framework oil seal is arranged between one side of the flange transition seat positioned outside the second cavity and the rotating shaft. The utility model discloses permanent-magnet machine has good waterproof performance, can be used for using with the immersible pump cooperation under water, and permanent-magnet machine power is big, has the performance of preferred.

Description

Permanent magnet motor

Technical Field

The utility model belongs to the technical field of motor design, especially, relate to a permanent-magnet machine of supporting immersible pump.

Background

The pump is a general-purpose machine and has wide application. With the development and evolution of water pumps, the application range of the water pumps is wider and wider. The submersible motor is a motor specially developed for underwater use, is mainly used for being combined with a submersible pump, or is a product formed by directly mounting a pump component on a shaft extension end of the submersible motor to form a machine-pump integrated body, and is used for being submerged in underground water or water in rivers, lakes, oceans and other occasions to work. The water pump has the advantages of small volume, light weight, no need of water diversion before starting, no restriction of suction lift, no need of additionally arranging a pump house, convenient installation and use, reliable performance, higher efficiency, low price, investment saving and the like, and is widely applied to water taking from underground or rivers and lakes, agricultural irrigation, urban water supply, industrial and mining enterprise drainage, urban and rural building drainage, resident domestic water, urban or factory sewage and sewage treatment and the like. The submersible motor can also be used as a matched power source of various underwater machines, such as a drilling machine driving motor for bridge rivers and building detection, various propeller power sources for underwater exploration ships and the like.

The situation that the permanent magnet motor and the submersible pump are used in a matched mode in the prior art is few, and when the permanent magnet motor is used underwater, external water is prevented from entering the permanent magnet motor.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned problem that prior art exists, the utility model provides an aim at provides a permanent-magnet machine with waterproof performance to can be under water safe operation.

The embodiment of the utility model provides a technical scheme who adopts is, a permanent-magnet machine, locate including pivot, cover change epaxial rotor core, locate outer stator core of rotor core, be fixed in outer casing of stator core and locating change epaxial front end housing and rear end cap, the casing is in the axial direction's of pivot both ends respectively with the periphery of front end cap with the periphery of rear end cap is connected in order to enclose into first cavity, permanent-magnet machine still includes:

the flange transition seat is arranged on the rotating shaft and is positioned outside the first cavity, and the flange transition seat and the front end cover enclose a second cavity surrounding the rotating shaft;

the mechanical sealing structure is arranged on the rotating shaft and is positioned in the second cavity, and two ends of the mechanical sealing structure in the axial direction of the rotating shaft respectively extend into the space between the rotating shaft and the flange transition seat and the space between the rotating shaft and the front end cover;

and the framework oil seal is arranged between one side of the flange transition seat outside the second cavity and the rotating shaft.

In some embodiments, the mechanical seal is a double-ended rubber bellows.

In some embodiments, the second chamber is filled with an insulating sealing oil capable of flooding the mechanical seal.

In some embodiments, the insulating sealing oil fills 30% to 90% of the volume of the second chamber.

In some embodiments, the flange transition seat comprises a seat body with a U-shaped cross section and an annular flange formed by extending outward from an open end of the seat body; the rotating shaft penetrates through the bottom end of the base body opposite to the opening end; the annular flange is attached to and connected with the opposite surfaces of the front end cover, and is sealed through an O-shaped sealing ring.

In some embodiments, O-ring seals are respectively disposed between end faces of the casing at two ends of the rotating shaft in the axial direction and the front end cover and the rear end cover.

In some embodiments, a terminal box base is arranged on the casing, and a terminal board connected with the lead wire of the stator core is arranged in the terminal box base; and the wiring box base is provided with a wiring port, and the wiring port is inserted with a wiring nose connected with the wiring board.

In some embodiments, an O-ring seal is disposed between the lug and the terminal block receptacle.

In some embodiments, an outlet is formed at one end of the connection lug, which is not connected with the connection port, an abacus bead sleeved on the cable in the connection lug for binding the cable is arranged in the outlet, and a compression nut for compressing the cable is arranged on the outlet.

In some embodiments, the rear end cap is provided with an inflation hole communicated with the first chamber, and a plug screw is arranged in the inflation hole.

The utility model discloses permanent-magnet machine has good waterproof performance, can be used for using with the immersible pump cooperation under water, and permanent-magnet machine power is big, can make the immersible pump have great power, improves performance.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

The summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments, by way of example and not by way of limitation, and together with the description and claims, serve to explain the embodiments of the invention. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

Fig. 1 is a cross-sectional view of a permanent magnet motor according to an embodiment of the present invention.

Reference numerals:

1-a rotating shaft; 2-a rotor core; 3-a stator core; 4-a housing; 5-front end cover; 6-rear end cap; 7-a first chamber; 8-seat body; 9-an annular flange; 10-a second chamber; 11-a mechanical seal structure; 12-framework oil seal; 13-O type seal ring; 14-terminal box base; 15-patch panel; 16-a lug; 17-abacus beads; 18-a compression nut; 19-a plug screw; 20-cable.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

The embodiment of the utility model provides a permanent-magnet machine, this permanent-magnet machine can be used for using with the immersible pump is supporting under water. As shown in fig. 1, the permanent magnet motor includes a rotating shaft 1, a rotor core 2 sleeved on the rotating shaft 1, a stator core 3 arranged outside the rotor core 2, a casing 4 fixed outside the stator core 3, and a front end cover 5 and a rear end cover 6 arranged on the rotating shaft 1, wherein the casing 4 is connected with the periphery of the front end cover 5 and the periphery of the rear end cover 6 at two ends of the rotating shaft 1 in the axial direction respectively to form a first cavity 7, and the rotor core 2 and the stator core 3 are both located in the first cavity 7. The permanent magnet motor further comprises a flange transition seat, a mechanical sealing structure 11 and a framework oil seal 12, wherein the flange transition seat is arranged on the rotating shaft 1 and located outside the first cavity 7, the flange transition seat and the front end cover 5 are enclosed to form a second cavity 10 surrounding the rotating shaft 1, and the first cavity 7 and the second cavity 10 are separated by the front end cover 5. Mechanical seal structure 11 and skeleton oil blanket 12 all locate between pivot 1 and the flange transition seat, and skeleton oil blanket 12 is located mechanical seal structure 11's the outside, adopts two kinds of sealing methods to seal from the both sides of flange transition seat respectively, prevents that outside liquid from getting into in the permanent magnet motor (first cavity 7).

Specifically, with continuing to refer to fig. 1, the mechanical seal structure 11 is disposed on the rotating shaft 1 and located in the second chamber 10, the first end of the mechanical seal structure 11 in the axial direction of the rotating shaft 1 extends to a position between the rotating shaft 1 and the flange transition seat, and the second end of the mechanical seal structure 11 in the axial direction of the rotating shaft 1 extends to a position between the rotating shaft 1 and the front end cover 5, so as to achieve a better sealing effect. The framework oil seal 12 is arranged between one side of the flange transition seat, which is positioned outside the second cavity 10, and the rotating shaft 1. The framework oil seal 12 is matched with the mechanical seal structure 11, so that the gap between the rotating shaft 1 and the flange transition seat is effectively sealed, and external liquid is prevented from entering the second chamber 10 through the gap between the rotating shaft 1 and the flange transition seat and further entering the first chamber 7.

It should be noted that the framework oil seal 12 and the mechanical seal structure 11 in this embodiment are in direct contact with each other, but are separated by a flange transition seat, see fig. 1.

In some embodiments, the specific type of the mechanical sealing structure 11 may be selected according to actual needs, for example, the mechanical sealing structure 11 may be a double-end rubber bellows, and the double-end rubber bellows is adopted as the mechanical sealing structure 11, so that the structure is simple and the sealing effect is good.

In some embodiments, the second chamber 10 is filled with insulating sealing oil capable of flooding the mechanical seal 11. And the second chamber 10 is filled with insulating sealing oil, so that the sealing effect is further improved, the mechanical sealing structure 11 can be protected, the sealing performance is improved, and the service life is prolonged.

The filling amount of the insulating sealing oil may be 30% to 90% of the volume of the second chamber 10. It is preferable that the insulating sealing oil fills 2/3 of the volume of the second chamber 10, i.e., 2/3 of the volume of the second chamber 10.

In some embodiments, with continued reference to fig. 1, the flange transition seat includes a seat body 8 having a U-shaped cross section and an annular flange 9 formed by extending an open end of the seat body 8; the rotating shaft 1 penetrates through the bottom end of the base body 8 opposite to the opening end; the annular flange 9 is in abutting engagement with and sealed to the opposite surfaces of the front end cap 5 by O-ring seals 13. And external liquid is prevented from entering the second chamber 10 through the space between the flange transition seat and the front end cover 5, and the sealing performance is prevented from being influenced.

In some embodiments, as shown in fig. 1, the casing 4 is provided with an O-ring 13 between the end surface of the first end of the rotating shaft 1 in the axial direction and the front end cover 5, and the casing 4 is provided with an O-ring 13 between the end surface of the second end of the rotating shaft 1 in the axial direction and the rear end cover 6. O type sealing washer 13 sets up, prevents that outside liquid from getting into in the permanent magnet motor (first cavity 7) via casing 4 and front and back end cover 6's junction, increases the utility model discloses permanent magnet motor's waterproof performance.

As shown in fig. 1, a terminal block base 14 is provided on the housing 4, and a terminal plate 15 connected to a lead wire of the stator core 3 is provided in the terminal block base 14; the terminal box base 14 is provided with a terminal port, and a terminal lug 16 (equivalent to a terminal box) connected with the terminal board 15 is inserted into the terminal port. The terminal lug 16 has a cable 20 therein which is connected to a terminal connected to the terminal block 15. The connection structure of the wiring lug 16 and the terminal box base 14 is simple, and the connection operation is convenient.

In some embodiments, with reference to fig. 1, an O-ring 13 is disposed between the connection lug 16 and the terminal block 14, so as to prevent external liquid from entering the terminal block 14 through a gap between the connection lug 16 and the terminal block 14, and further entering the second chamber 10, thereby improving the waterproof performance of the permanent magnet motor.

As shown in FIG. 1, an outlet is formed at the end of the connection lug 16 not connected with the connection lug (the connection lug is shielded by a compression nut 18 and is not shown), an abacus bead 17 sleeved on a cable 20 in the connection lug 16 and used for binding the cable 20 is arranged in the outlet, and the compression nut 18 used for compressing the cable 20 is arranged on the outlet.

With continuing reference to fig. 1, the rear end cap 6 is provided with an inflation hole communicated with the interior of the first chamber 7, and a plug screw 19 is arranged in the inflation hole. By providing the back end cap 6 with an inflation hole, the first chamber 7 can be inflated through the inflation hole to test the sealing performance of the first chamber 7. After the test is finished, the screw plug 19 is used for plugging the air charging hole so as to prevent external liquid from entering the first chamber 7 through the air charging hole and influencing the waterproof performance.

The utility model discloses permanent-magnet machine has guaranteed permanent-magnet machine can the safe operation under water through carry out sealing treatment on each installation contact surface.

With continuing reference to fig. 1, the end of the rotating shaft 1 provided with the flange transition seat is exposed to form a shaft extension end. When the utility model discloses a permanent-magnet machine uses with the immersible pump cooperation, the immersible pump is connected in the axle and is stretched the end.

The utility model discloses regard as the motor with the immersible pump cooperation use permanent-magnet machine, solved the current less problem of motor power with the supporting of immersible pump.

The above description is intended to be illustrative, and not restrictive, and variations, modifications, substitutions, and alterations may be made to the above-described embodiments by those of ordinary skill in the art within the scope of the present disclosure. Also, the above-described examples (or one or more versions thereof) may be used in combination with each other, and it is contemplated that the embodiments may be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

Claims

1. The utility model provides a permanent magnet motor, includes that pivot, cover are located change epaxial rotor core, locate outer stator core of rotor core, be fixed in outer casing of stator core and locating change epaxial front end housing and rear end cap, the casing is in the axial direction's of pivot both ends respectively with the periphery of front end housing with the periphery of rear end cap is connected in order to enclose into first cavity, its characterized in that, permanent magnet motor still includes:

2. The permanent magnet electric machine of claim 1, wherein the mechanical seal is a double-ended rubber bellows.

3. The permanent magnet electric machine according to claim 1, wherein the second chamber is filled with an insulating sealing oil capable of flooding the mechanical seal.

4. The permanent magnet electric machine according to claim 3, characterized in that the insulating sealing oil fills 30-90% of the volume of the second chamber.

5. The permanent magnet motor of claim 1, wherein the flange transition seat comprises a seat body with a U-shaped cross section and an annular flange formed by extending an open end of the seat body outwards; the rotating shaft penetrates through the bottom end of the base body opposite to the opening end; the annular flange is attached to and connected with the opposite surfaces of the front end cover, and is sealed through an O-shaped sealing ring.

6. The permanent magnet motor according to claim 1, wherein O-ring seals are respectively provided between end faces of the casing at both ends of the rotating shaft in the axial direction and the front end cover and the rear end cover.

7. The permanent magnet motor according to claim 1, wherein a terminal block seat is provided on the housing, and a terminal plate connected to a lead wire of the stator core is provided in the terminal block seat; and the wiring box base is provided with a wiring port, and the wiring port is inserted with a wiring nose connected with the wiring board.

8. The permanent magnet electric machine of claim 7 wherein an O-ring seal is provided between the lug and the terminal block receptacle.

9. The permanent magnet motor according to claim 7, wherein an outlet is formed at the end of the connection lug which is not connected with the connection lug, an abacus bead sleeved on the cable in the connection lug for binding the cable is arranged in the outlet, and a compression nut for compressing the cable is arranged on the outlet.

10. The permanent magnet motor according to claim 1, wherein the rear end cap is provided with an inflation hole communicated with the first chamber, and a plug screw is arranged in the inflation hole.