CN210469091U

CN210469091U - Permanent magnet coupling

Info

Publication number: CN210469091U
Application number: CN201921740646.8U
Authority: CN
Inventors: 贾惠东
Original assignee: Dongying Renhe Petroleum Machinery Equipment Co ltd
Current assignee: Dongying Renhe Petroleum Machinery Equipment Co ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-05-05
Anticipated expiration: 2029-10-15

Abstract

The utility model discloses a permanent magnet coupling, including the drive plate, the drive plate includes the quotation, the local recessed radiating groove that forms of quotation, the tank bottom of radiating groove is followed the rotation direction of drive plate gradually hangs down the slope. When the drive plate was rotatory, the air in the radiating groove was for drive plate reverse flow, flowed to drive plate surface direction along the tank bottom gradually, until the radiating groove that discharges outside, the heat in the radiating groove is taken away to the air flow in-process is continuous, and the radiating effect is good. The driving disk does not need to be provided with heat dissipation structures such as protruding radiating fins, the cost is saved, noise generated by the radiating fins is avoided, and air is guided to the outside of the driving disk from the bottom of the driving disk smoothly due to the design of the bottom of the driving disk, so that the wind noise is further reduced.

Description

Permanent magnet coupling

Technical Field

The utility model belongs to transmission machinery equipment field, specifically speaking relates to a permanent magnet coupling.

Background

The coupling is a device for connecting two shafts or a shaft and a rotating part, rotating together in the process of transmitting motion and power and not separating under normal conditions. Mechanical parts for firmly coupling the driving shaft and the driven shaft in different mechanisms to rotate together and transmitting motion and torque. Sometimes it is used as a safety device to prevent the coupled machine parts from bearing excessive load, and it plays the role of overload protection.

The permanent magnet coupling is a novel coupling which connects a prime motor and a working machine through the magnetic force of a permanent magnet, and is widely applied to sealing transmission machinery in the industries of chemical engineering, electroplating, papermaking, pharmacy, food, vacuum and the like. However, in each enterprise at present, centrifugal pumps, screw pumps and other pump equipment which are directly driven by motors through permanent magnet couplings have the defects of low heat dissipation efficiency, large wind noise, influence on the environment and severe working environment of workers.

Chinese patent application No. 201310258183.2 discloses a limit square permanent magnet coupling of high-efficient heat dissipation low noise, including outer rotor dish, the medial surface of outer rotor dish is fixed with the copper dish, outer rotor dish lateral surface is fixed with curve radiating fin, curve radiating fin is once taking shape integrative or components of a whole that can function independently structure with outer rotor dish. The plurality of radiating fins vibrate and generate large noise when the outer rotor disc rotates, the more radiating fins are installed, the better the radiating effect is, but the more radiating fins are installed, the larger the weight of the outer rotor disc is caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the not enough of prior art, provides a permanent magnet shaft coupling, and the radiating effect is good, has reduced the noise when permanent magnet shaft coupling is rotatory.

In order to solve the technical problem, the utility model provides a permanent magnet coupler adopts technical scheme's basic concept to be:

the permanent magnet coupler comprises a driving disc, wherein the driving disc comprises a disc surface, the disc surface is locally concave downwards to form a heat dissipation groove, and the bottom of the heat dissipation groove is inclined downwards gradually along the rotation direction of the driving disc. When the driving disc rotates, air in the radiating groove flows reversely relative to the driving disc, and because the groove bottom is inclined in a gradually-raised mode along the reverse direction of the driving disc, the air in the groove flows gradually towards the outer surface of the driving disc along the groove bottom until the air is discharged out of the radiating groove, heat in the radiating groove is continuously taken away in the air flowing process, and the radiating effect is good. The driving disk does not need to be provided with heat dissipation structures such as protruding radiating fins, the cost is saved, noise generated by the radiating fins is avoided, and air is guided to the outside of the driving disk from the bottom of the driving disk smoothly due to the design of the bottom of the driving disk, so that the wind noise is further reduced.

Furthermore, the groove bottom comprises two side edges intersecting with the rotation direction of the driving disc, the first side edge is arranged in front of the second side edge along the rotation direction of the driving disc, and the depth of the first side edge from the disc surface is greater than the depth of the second side edge from the disc surface.

Further, the depth of the second side edge from the disc surface is zero. The second side edge of the groove bottom is an initial concave edge with a smoothly-transitional disc surface, and the concave depth gradually increases along the rotation direction of the driving disc until the position of the first side edge. The air in the radiating groove flows from the first side edge to the second side edge, and is directly discharged to the outside of the disk surface through the second side edge, so that the radiating effect is better.

Furthermore, the driving disc is an annular disc with a mounting hole in the center, and the first side edge and the second side edge extend from the inner ring to the outer ring of the driving disc. The milling and forming of the heat dissipation groove are more convenient; and heat is more easily discharged from the inner ring and the outer ring to the outside.

Further, first side and/or the second side is the extension of pitch arc, first side with distance between the second side is followed the inner ring of driving disk is to outer ring increase gradually. The size of the heat dissipation groove is gradually increased from the inner ring to the outer ring of the driving disc, and hot air flows from the first side edge to the second side edge and flows to the outer ring of the driving disc more easily, so that the hot air is discharged more easily, and the driving disc is enabled to dissipate heat rapidly.

Furthermore, the arc line is a part of an involute of the inner ring of the driving disk, and the extending direction of the involute is opposite to the rotating direction of the driving disk.

Further, a chord of the arc line is arranged behind the arc line along the rotating direction of the driving disk.

Further, the first side edge and the second side edge extend linearly, and the distance between the first side edge and the second side edge is gradually increased from the inner ring to the outer ring of the driving disk.

Alternatively, the first side edge and the second side edge are parallel.

Furthermore, the driving disc is provided with at least two groups of radiating grooves which are uniformly distributed at intervals along the circumferential direction of the driving disc. The heat dissipation grooves and the disk surface are uniformly distributed at intervals along the circumferential direction of the driving disk, the molding is simple and attractive, the heat dissipation is uniform, and the strength of the driving disk is high.

Further, the projection of the heat dissipation groove on the disk surface of the driving disk occupies more than 2/3 of the driving disk. Better radiating effect can be achieved without radiating structures such as radiating fins, and noise can not be generated when the driving disc rotates.

After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has.

1. The tank bottom of radiating groove is followed the rotation direction of initiative dish slopes gradually low. When the driving disc rotates, air in the radiating groove flows reversely relative to the driving disc, and because the groove bottom is inclined in a gradually-raised mode along the reverse direction of the driving disc, the air in the groove flows gradually towards the outer surface of the driving disc along the groove bottom until the air is discharged out of the radiating groove, heat in the radiating groove is continuously taken away in the air flowing process, and the radiating effect is good. The utility model discloses a drive plate need not to set up heat radiation structure such as convex fin, saves the cost, does not have the noise that the fin produced, again because the design of tank bottom is smooth with the air from the tank bottom guide to the drive plate outside, and further reduces wind and makes an uproar.

2. The second side is followed the recessed degree of depth of quotation is zero, and the air in the radiating groove flows to the second side from first side, through the second side direct discharge to the quotation outside, and the radiating effect is better.

3. The first side edge and the second side edge of the utility model extend from the inner ring to the outer ring of the driving disc, so that the heat dissipation groove can be more conveniently milled and formed; and heat is more easily discharged from the inner ring and the outer ring to the outside.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a cross-sectional view of the permanent magnet coupling of the present invention;

FIG. 2 is a schematic view of a first driving disk of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is a sectional view taken along line B-B of FIG. 2;

FIG. 5 is a top view of the outer ring of the first driving disk of FIG. 2;

FIG. 6 is a schematic view of a second driving disk of the present invention;

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 6;

FIG. 8 is a cross-sectional view taken along line D-D of FIG. 6;

FIG. 9 is a top view of the outer ring of the second driving disk of FIG. 6.

In the figure: 1. a driving disc 11 and a heat dissipation groove; 111. a first side edge; 112. a second side edge; 12. a dish surface; 13. mounting holes; 14. an inner ring; 15. an outer ring; 16. connecting holes; 2. a driven plate; 3. a copper disc; 4. a shaft sleeve; 5. a bolt assembly.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 9, the utility model discloses a permanent magnet coupler, which comprises a driving disc 1, a driven disc 2 and a shaft sleeve 4, wherein the driving disc 1 comprises two stainless steel discs which are oppositely arranged, a bolt component 5 which is used for fixedly connecting the driving disc 1 and the shaft sleeve 4, a bolt component 5 which is used for connecting the two driving discs 1, a copper disc 3 and a bolt component 5 which is used for connecting the driving disc 1 and the copper disc 3; the bolt assembly 5 comprises bolts, nuts, spring washers, flat pads and split pins with different specifications and types; and a locking nut or a hinged hole bolt is adopted as a connecting nut between the two driving discs 1, and an opening pin is added. Driven plate 2 includes a stainless steel dish and permanent magnet subassembly and connects driven plate 2 and the bolt assembly 5 of axle sleeve 4, the permanent magnet subassembly includes permanent magnet body, stainless steel clamp plate and bolt assembly 5, bolt assembly 5 includes the bolt, nut, spring washer and the flat pad of specification model diverse. The shaft sleeve 4 comprises a shaft sleeve 4, a fastening sleeve and a bolt assembly 5, wherein the bolt assembly 5 comprises bolts, nuts, spring washers and flat pads, and the specifications and the models of the bolts are different. The general motor directly passes through centrifugal pump, screw pump and other pump class equipment of permanent magnet shaft coupling drive, because heat radiation structure connects on the steel disc surface, so have the radiating efficiency low, wind make an uproar big, influence the environment, cause staff's operational environment shortcoming such as abominable. The steel disc in addition goes up integrated into one piece and has annular heat dissipation bars, reduces the intensity of steel disc on the one hand, and on the other hand heat dissipation bars integrated into one piece can't dismantle change, maintenance, brings inconvenience and economic loss for the user.

Permanent magnet shaft coupling's initiative dish 1 include quotation 12, quotation 12 is the concave radiating groove 11 that forms of part, radiating groove 11's tank bottom is followed the rotation direction of initiative dish 1 gradually hangs down the slope. When the driving disc 1 rotates, air in the heat dissipation groove 11 flows reversely relative to the driving disc 1, because the groove bottom is inclined in a gradually-raised manner along the reverse direction of the driving disc 1, the air in the groove flows gradually towards the outer surface of the driving disc 1 along the groove bottom until the air is discharged out of the heat dissipation groove 11, heat in the heat dissipation groove 11 is continuously taken away in the air flowing process, and the heat dissipation effect is good. The utility model discloses a drive plate 1 need not to set up heat radiation structure such as convex fin, saves the cost, does not have the noise that the fin produced, again because the design of tank bottom is smooth with the air from 1 outside of tank bottom guide drive plate, and further reduces wind and makes an uproar. Generally, quotation 12 includes the interior quotation 12 that sets up each other relatively, and the outer quotation 12 of setting towards the permanent magnet shaft coupling outside, the utility model discloses a radiating groove 11 sets up on outer quotation 12, the tank bottom of radiating groove 11 to the 12 directions of interior quotation of driving disk 1 are sunken, conveniently dispel the heat to the permanent magnet shaft coupling outside, and the radiating effect is good.

The heat dissipation groove 11 is integrally formed on the outer surface of the driving disc 1 in a milling mode, the heat dissipation structure does not need to be additionally installed, the steps of installation and disassembly are saved, and the cost is saved. In addition, the heat dissipation grooves 11 milled on the driving disk 1 also enhance the strength of the driving disk 1.

As shown in fig. 2 and 6, the groove bottom includes two sides intersecting the rotation direction of the driving disk 1, the first side 111 is disposed in front of the second side 112 along the rotation direction of the driving disk 1, and the depth of the first side 111 recessed from the disk surface 12 is greater than the depth of the second side 112 recessed from the disk surface 12. The first side 111 and the second side 112 are disposed opposite to each other, and the first side 111 and the second side 112 are vertically recessed from the disk surface 12. The surface 12 of the driving disk 1, which is not recessed to form the heat dissipation groove 11, is a plane. When the driving disk 1 rotates, the air in the heat dissipation groove 11 flows from the first side 111 to the second side 112, because the groove bottom is inclined to be gradually raised along the reverse direction of the driving disk 1, the air in the groove gradually flows to the disk surface 12 of the driving disk 1 along the groove bottom until the air is discharged out of the heat dissipation groove 11, and the heat in the heat dissipation groove 11 is more easily and continuously taken away in the air flowing process.

As shown in fig. 5 and 9, the depth of the second side 112 recessed from the disk surface 12 is zero, that is, the second side 112 coincides with the disk surface 12, the second side 112 at the bottom of the groove is the initial edge of the disk surface 12 that is recessed in smooth transition, the depth of the recess gradually increases along the rotation direction of the active disk until the position of the first side, and the air in the heat dissipation groove 11 flows from the first side 111 to the second side 112, and is directly discharged to the outside of the disk surface 12 through the second side 112, so that the heat dissipation effect is better. The concave dish of smooth transition only plays the guide effect to the air that flows, does not have the effect of blockking, and the radiating effect is better.

As shown in fig. 2 and 6, the driving disk 1 is an annular disk with a mounting hole 13 at the center, and the first side 111 and the second side 112 extend from the inner ring 14 to the outer ring 15 of the driving disk 1, so as to more conveniently mill and shape the heat dissipation slot 11; and heat is more easily discharged from the inner ring 14 and the outer ring 15 to the outside. The driving disc 1 is sleeved outside the shaft sleeve 4 through the mounting hole 13, and the driving disc 1 is detachably connected with the shaft sleeve 4.

In one embodiment, the first side 111 and the second side 112 extend in an arc, and the distance between the first side 111 and the second side 112 gradually increases from the inner ring 14 to the outer ring 15 of the driving disk 1. In one embodiment, the first side 111 extends in an arc, and the distance between the first side 111 and the second side 112 gradually increases from the inner ring 14 to the outer ring 15 of the driving disk 1. In addition, in another embodiment, the first side 111 or the second side 112 extends in an arc, and the distance between the first side 111 and the second side 112 gradually increases from the inner ring 14 to the outer ring 15 of the driving disk 1. The size of the heat dissipation groove 11 gradually increases from the inner ring 14 to the outer ring 15 of the driving disk 1, and the hot air flows from the first side 111 to the second side 112 and flows more easily to the outer ring 15 of the driving disk 1, so that the hot air is more easily discharged, and the driving disk 1 can dissipate heat quickly.

The arc line is a part of an involute of an inner ring 14 of the driving disk 1, and the extending direction of the involute is opposite to the rotating direction of the driving disk. The forming is convenient, the pressure of the hot air on the bottom of the groove from the inner ring 14 to the outer ring 15 is uniform or the pressure of the hot air from the inner ring 14 to the outer ring 15 is gradually increased, the heat is conveniently and gradually dissipated from the inner ring 14 to the outer ring 15, and the heat dissipation effect is good.

As shown in fig. 2 and 6, the chord of the arc line is arranged behind the arc line along the rotation direction of the driving disk 1, so that the pressure applied to the hot air on the bottom of the slot from the inner ring 14 to the outer ring 15 is relatively uniform or the pressure applied to the hot air from the inner ring 14 to the outer ring 15 is gradually increased, heat is conveniently and gradually dissipated from the inner ring 14 to the outer ring 15, and the heat dissipation effect is good.

In an embodiment different from the above, the first side 111 and the second side 112 extend in a straight line, and the distance between the first side 111 and the second side 112 gradually increases from the inner ring 14 to the outer ring 15 of the driving disk 1, for example, the heat dissipation slot 11 forms a trumpet shape or a fan shape, and the shape is regular and easier to mill; the size of the heat dissipation groove 11 gradually increases from the inner ring 14 to the outer ring 15 of the driving disk 1, and the hot air flows from the first side 111 to the second side 112 and flows more easily to the outer ring 15 of the driving disk 1, so that the hot air is more easily discharged, and the driving disk 1 can dissipate heat quickly. Or, the first side 111 and the second side 112 are parallel, the heat dissipation groove 11 forms a groove-shaped structure similar to a rectangle, and the shape is regular and is easier to mill.

As shown in fig. 2, 4, 6 and 8, at least two groups of heat dissipation grooves 11 are formed in the driving disk 1, and the heat dissipation grooves 11 are uniformly and alternately distributed along the circumferential direction of the driving disk 1. The disk surface 12 is arranged to protrude from the driving disk 1 relative to the heat dissipation groove 11. The more the heat dissipation grooves 11 are provided, the better the heat dissipation effect is. In a preferred embodiment, eight groups of heat dissipation grooves 11 are arranged on the driving disk 1, the heat dissipation grooves 11 and the disk surface 12 are uniformly distributed at intervals along the circumferential direction of the driving disk 1, the forming is simple and attractive, the heat dissipation is uniform, and the strength of the driving disk 1 is high.

The projection of the heat dissipation groove 11 on the disk surface 12 of the driving disk 1 accounts for more than 2/3 of the driving disk 1. Better heat dissipation effect can be achieved without arranging heat dissipation structures such as heat dissipation fins, and noise can not be generated when the driving disk 1 rotates.

As shown in fig. 2 to 3 and fig. 6 to 7, the permanent magnet coupler further comprises a copper disc 3, a plurality of connecting holes 16 are formed in a disc surface 12, which is not provided with the heat dissipation groove 11, of the driving disc 1, the bolt assembly 5 is detachably connected with the copper disc 3 through the connecting holes 16, the copper disc 3 and the inner disc surface 12 of the driving disc 1 are mutually attached and connected, the heat dissipation effect is better, and the working environment of workers is improved.

The permanent magnet coupler comprises a first driving disk 1 and a second driving disk 1, wherein the first driving disk 1 and the second driving disk 1 are detachably connected through a connecting hole 16 by a bolt component 5. The first driving disc 1 and the second driving disc 1 are coaxially arranged, the disc surface 12, opposite to the first driving disc 1 and the second driving disc 1, is an inner disc surface 12, the disc surface 12, opposite to the inner disc surface 12, is an outer disc surface 12, the heat dissipation grooves 11 are formed in the outer disc surfaces 12 of the first driving disc 1 and the second driving disc 1, and the heat dissipation effect is good.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above embodiments, but not to limit the present invention, any person skilled in the art can make modifications or changes to equivalent embodiments by utilizing the above technical contents without departing from the technical scope of the present invention, and the embodiments in the above embodiments can be further combined or replaced, but any simple modification, equivalent change and modification made to the above embodiments by the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. The permanent magnet coupler is characterized by comprising a driving disc, wherein the driving disc comprises a disc surface, the disc surface is locally concave downwards to form a radiating groove, and the bottom of the radiating groove is inclined downwards gradually along the rotating direction of the driving disc.

2. The permanent magnet coupling of claim 1 wherein said groove bottom includes two sides intersecting the rotational direction of said active disc, a first side disposed opposite in front of a second side along the rotational direction of said active disc, said first side being recessed from said disc surface to a greater depth than said second side.

3. A permanent magnet coupling according to claim 2, wherein the second side is recessed from the disc surface by a depth of zero.

4. A permanent magnet coupling according to claim 2 or 3, wherein the driving disc is an annular disc with a mounting hole in the center, and the first side and the second side extend from the inner ring to the outer ring of the driving disc.

5. A permanent magnet coupling according to claim 4, characterized in that the first and/or the second side edge extend in an arc, the distance between the first and the second side edge increasing from the inner ring to the outer ring of the driving disk.

6. The permanent magnet coupling of claim 5 wherein said arc is a portion of an involute of said driving disk inner ring, said involute extending in a direction opposite to a direction of rotation of said driving disk.

7. A permanent magnet coupling according to claim 5, characterized in that the chord of the arc is arranged behind the arc in the direction of rotation of the driving disk.

8. The permanent magnet coupling according to claim 4, wherein the first side and the second side extend in a straight line, and the distance between the first side and the second side increases gradually from the inner ring to the outer ring of the driving disk;

alternatively, the first side edge and the second side edge are parallel.

9. The permanent magnet coupling according to any one of claims 1 to 3, wherein at least two groups of heat dissipation grooves are arranged on the driving disc, and the heat dissipation grooves are evenly and alternately distributed along the circumferential direction of the driving disc.

10. The permanent magnet coupling of claim 9 wherein the projection of the heat sink onto the disc face of the driving disc occupies more than 2/3 of the driving disc.