CN210867474U

CN210867474U - Permanent magnet coupling

Info

Publication number: CN210867474U
Application number: CN201922044253.XU
Authority: CN
Inventors: 王炬
Original assignee: Dongying Renhe Petroleum Machinery Equipment Co ltd
Current assignee: Dongying Renhe Petroleum Machinery Equipment Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-06-26
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a permanent magnet coupling, include: the driving disc comprises a disc surface, and the disc surface is locally recessed to form a ventilation groove; the heat dissipation structure is detachably connected to the driving disc and arranged on the disc surface of the side portion of the ventilation groove. Set up the ventilation groove, reduced the weight of initiative dish on the one hand, on the other hand, for heat radiation structure's heat dissipation provides the air that flows, increases the air volume between heat radiation structure and the initiative dish, reduces the temperature when permanent magnet coupling rotates.

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 No. 201610266620.9 discloses a permanent magnet coupling, wherein a plurality of annular grooves and a plurality of annular ridges are formed on the outer side surfaces of a main steel disc and an auxiliary steel disc which form a squirrel cage rotor, and the plurality of annular grooves and the plurality of annular ridges form a heat dissipation grid of the squirrel cage rotor. Wherein the heat dissipation bars are annular, and hot-air is the annular flow, is unfavorable for the effluvium, and the radiating effect is poor, and heat dissipation bars integrated into one piece can't dismantle and maintain on main steel disc and vice steel disc.

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 coupling, increases the air volume of initiative dish, reinforcing radiating effect.

In order to solve the above technical problem, a first object of the present invention is to provide a permanent magnet coupling, which adopts the following basic concept:

a permanent magnet coupler comprises a driving disc and a heat dissipation structure, wherein the driving disc comprises a disc surface, and a ventilation groove is formed in the disc surface in a partially concave manner; the heat dissipation structure is detachably connected to the driving disc and arranged on the disc face of the side portion of the ventilation groove, and the heat dissipation structure is convenient to detach and install. Set up the ventilation groove, reduced the weight of initiative dish on the one hand, on the other hand, for heat radiation structure's heat dissipation provides the air that flows, increases the air volume between heat radiation structure and the initiative dish, reduces the temperature when permanent magnet coupling rotates.

Further, still include on the drive disc and run through the ventilation hole of drive disc, ventilation groove one end with the ventilation hole intercommunication, the other end extends to the periphery of quotation. The ventilation holes are arranged to guide hot air from one end face of the driving disc to the disc face corresponding to the end face of the driving disc, and the hot air is guided to the outside of the driving disc from the ventilation grooves of the disc face, so that the ventilation quantity of the driving disc is increased, and the temperature of the permanent magnet coupler during rotation is reduced.

Further, the ventilation grooves extend in the radial direction of the disk surface. Simple structure, the shaping is convenient, and the hot-air passes through the ventilation hole very easily and transmits the ventilation groove on the quotation to through ventilation groove discharge initiative dish.

Further, the ventilation groove is the fashioned rectangular channel of integrative milling, the ventilation hole is the fashioned round hole of integrative milling, the both sides wall of ventilation groove with the ventilation hole is tangent.

Furthermore, the heat dissipation structure comprises a bottom plate and at least two heat dissipation fins, wherein the heat dissipation fins are arranged on the bottom plate in a protruding mode, and the bottom plate is detachably mounted on the driving disc on the side portion of the ventilation groove.

Further, the radiating fins are of plate-shaped structures or sheet-shaped structures which are parallel to each other.

Further, the radiating fins are of arc-shaped plate structures or sheet structures and are coaxial with the driving disc.

Further, be equipped with two sets of at least ventilation grooves and ventilation hole on the drive disk, the ventilation groove with the ventilation hole is followed the even, the interval distribution of circumference of quotation, the center in each ventilation hole with on the same circumference of drive disk coaxial.

Further, be equipped with at least a set of heat radiation structure on the initiative dish, heat radiation structure follows the even, the interval distribution of circumference of quotation is two sets of set up a set of heat radiation structure between the ventilation groove, perhaps every group the lateral part of ventilation groove all sets up a set of heat radiation structure.

Further, the permanent magnet coupler further comprises a copper disc, the driving disc is arranged between the copper disc and the heat dissipation structure, and the heat dissipation structure and the driving disc are connected with the copper disc through fasteners.

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

1. The heat radiation structure lateral part is equipped with the ventilation groove, has reduced the weight of initiative dish on the one hand, and on the other hand provides mobile air for heat radiation structure's heat dissipation, increases the air volume between heat radiation structure and the initiative dish, reduces the temperature when permanent magnet shaft coupling is rotatory.

2. Still including running through on the drive disc the ventilation hole of drive disc guides hot-air to rather than corresponding quotation from a terminal surface of drive disc, ventilation groove one end with ventilation hole intercommunication, the other end extend to the periphery of quotation for the gas in the ventilation groove is discharge drive disc more easily under the effect of centrifugal force, the temperature of faster reduction drive disc.

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 the drive disk of the present invention;

fig. 3 is an enlarged view of a portion a of fig. 2.

In the figure: 1. the driving disc 11, the disc surface 12, the ventilation grooves 13, the ventilation holes 14 and the connection holes; 2. a heat dissipation structure 21, a heat dissipation sheet 22 and a bottom plate; 3. a copper disc; 4. a driven plate; 5. a shaft sleeve; 6. 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, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 fig. 3, the utility model discloses a permanent magnet coupling, including driving disc and heat radiation structure, the driving disc includes the quotation, the local recessed ventilation groove that forms of quotation increases the air volume of driving disc, reduces the temperature when permanent magnet coupling is rotatory. The heat dissipation structure is detachably connected to the driving disc and arranged on the disc surface of the side portion of the ventilation groove. Set up the ventilation groove, reduced the weight of initiative dish on the one hand, on the other hand, for heat radiation structure's heat dissipation provides the air that flows, increases the air volume between heat radiation structure and the initiative dish, reduces the temperature when permanent magnet coupling rotates.

Generally, a centrifugal pump, a screw pump and other pump equipment driven by a motor directly through a permanent magnet coupling have the defect of low heat dissipation efficiency because a heat dissipation structure is connected to the surface of a steel disc. The permanent magnet coupler of the utility model comprises a driving disk, a driven disk and a shaft sleeve, wherein the driving disk comprises two stainless steel disks, a bolt component for fixedly connecting the driving disk and the shaft sleeve, and a bolt component for connecting the two driving disks, a copper disk and a bolt component for connecting the driving disk and the copper disk; the bolt assembly comprises bolts, nuts, spring washers, flat pads and split pins, wherein the specifications and the models of the bolts are different; and a locking nut or a hinged hole bolt is adopted as a connecting nut between the two driving discs, and an opening pin is added. The driven plate comprises a stainless steel plate, a permanent magnet assembly and a bolt assembly connected with the driven plate and a shaft sleeve, the permanent magnet assembly comprises a permanent magnet body, a stainless steel pressing plate and a bolt assembly, and the bolt assembly comprises bolts, nuts, spring washers and flat pads, wherein the specifications and the models of the bolts are different. The shaft sleeve comprises a shaft sleeve, a fastening sleeve and a bolt assembly, wherein the bolt assembly comprises bolts, nuts, spring washers and flat gaskets, and the specifications and the models of the bolts are different. The utility model discloses be equipped with the ventilation groove in the quotation of initiative dish, reinforcing radiating effect. The ventilation groove is formed in the disc surface of the driving disc in a milling mode, and the forming is simple and convenient.

As shown in fig. 2 and 3, the driving disk further includes a vent hole penetrating through the driving disk, so that hot air is guided from one end surface of the driving disk to the disk surface corresponding to the driving disk, the ventilation amount of the driving disk is increased, and the temperature of the permanent magnet coupling during rotation is reduced. Ventilation groove one end with the ventilation hole intercommunication, the other end extends to the periphery of quotation for the gas in the ventilation groove drives the dish, the temperature of faster reduction drive dish more easily discharges under the effect of centrifugal force. Set up ventilation groove and ventilation hole, reduced the weight of initiative dish on the one hand, on the other hand, for heat radiation structure's heat dissipation provides the air that flows, increases the air volume between heat radiation structure and the initiative dish, reduces the temperature when permanent magnet coupling rotates.

In the preferred embodiment, the ventilation groove is along the radial extension of quotation, simple structure, and the shaping is convenient, and hot-air passes through the ventilation hole very easily and transmits the ventilation groove on the quotation to discharge the initiative dish through the ventilation groove. The forming and extending directions of the ventilation slots are not limited to radial extension, the ventilation slots can also extend along the involute direction of the disk surface, and the hot air is more easily exhausted out of the driving disk as the centrifugal force on the outer edge of the disk surface is larger.

Specifically, the ventilation groove mills fashioned rectangular channel for an organic whole, the ventilation hole mills fashioned round hole for an organic whole, the both sides wall of ventilation groove with the ventilation hole is tangent. The structure is simple, and the forming is convenient; the hot air exhausted from the vent holes can be completely exhausted from the vent grooves to the outside of the driving disc under the action of centrifugal force, and cannot be accumulated or flow back to the inside of the driving disc.

The heat radiation structure comprises a bottom plate and at least two heat radiation fins, wherein the heat radiation fins are convexly arranged on the bottom plate to enhance the heat radiation effect, the bottom plate is detachably arranged on the driving disc of the side part of the ventilation groove, and the heat radiation structure is detachably arranged on the driving disc of the side part of the ventilation groove, so that the heat radiation structure is simple and convenient to install. The heat dissipation is realized through the heat dissipation structure, the ventilation quantity of the driving disc is increased through the ventilation grooves, and the heat dissipation effect is enhanced. The heat sink may be integrally formed with the base plate, or may be detachably connected to the base plate. The radiating fin is a device for radiating heat of an easily-generated electronic element in an electric appliance, is mostly made of aluminum alloy, cast steel and cast iron and is plate-shaped, sheet-shaped and the like, and has good radiating efficiency.

In one embodiment, the radiating fins are of parallel plate-shaped structures or sheet-shaped structures, and have the advantages of simple structure, convenience in molding, light weight and large radiating area. Specifically, the distances between adjacent radiating fins are equal, so that the forming is convenient; or the distance between the adjacent radiating fins can be gradually increased from inside to outside along the radial direction of the driving disk, and more radiating fins are arranged in the driving disk with higher temperature so as to achieve better radiating effect. The length of the radiating fins is gradually increased from inside to outside along the radial direction of the driving disc, and the radiating effect is enhanced.

In another embodiment, the radiating fins are of arc-shaped plate-shaped structures or sheet-shaped structures, and are simple in structure, convenient to form, light in weight and large in radiating area. The radiating fins are coaxial with the driving disk, so that resistance applied to the driving disk in the rotating process is reduced, and noise is reduced. Specifically, the distances between adjacent radiating fins are equal, so that the forming is convenient; or the distance between the adjacent radiating fins can be gradually increased from inside to outside along the radial direction of the driving disk, and more radiating fins are arranged in the driving disk with higher temperature so as to achieve better radiating effect. The length of the radiating fins is gradually increased from inside to outside along the radial direction of the driving disc, and the radiating effect is enhanced.

As shown in fig. 1 to 3, the driving disk is provided with at least two sets of ventilation grooves and ventilation holes, the ventilation grooves and the ventilation holes are distributed uniformly and at intervals along the circumferential direction of the disk surface, and the centers of the ventilation holes are positioned on the same circumference coaxial with the driving disk. The molding is simple, the appearance is attractive, and the heat dissipation is uniform. Preferably, the ventilation grooves are even rectangular grooves, and the number of the ventilation holes is the same as that of the ventilation grooves. As shown in fig. 2, eight sets of ventilation slots and eight sets of ventilation holes are arranged on the driving disk, so that the heat dissipation effect is good.

As shown in fig. 1, the driving disk is provided with at least one group of heat dissipation structures, and the heat dissipation structures are uniformly distributed at intervals along the circumferential direction of the disk surface, so that the molding is simple, the appearance is attractive, and the heat dissipation is uniform. A set of heat dissipation structure is arranged between the two sets of ventilation grooves, or a set of heat dissipation structure is arranged on the side portion of each set of ventilation grooves. Preferably, the number of the ventilation grooves and the number of the ventilation holes are even, and the number of the heat dissipation structures is also even. As shown in fig. 2, eight ventilation grooves, eight ventilation holes and four heat dissipation structures are arranged on the driving disk, two groups of connecting holes are arranged on the driving disk between the ventilation grooves, and the heat dissipation structures are detachably mounted on the driving disk through the connecting holes.

As shown in fig. 1, the permanent magnet coupler further comprises a copper disc, the driving disc is arranged between the copper disc and the heat dissipation structure, the heat dissipation structure and the driving disc are connected with the copper disc through fasteners, the heat dissipation effect is better, and the working environment of workers is improved. The driving disc is provided with various types of connecting holes for connecting the heat dissipation structure, the driving disc and the copper disc.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention still fall within the scope of the present invention.

Claims

1. A permanent magnet coupling, comprising:

the driving disc comprises a disc surface, and the disc surface is partially recessed to form a ventilation groove;

the heat dissipation structure is detachably connected to the driving disc and arranged on the disc surface of the side portion of the ventilation groove.

2. The permanent magnet coupling according to claim 1, wherein the driving disc further comprises a vent hole penetrating through the driving disc, one end of the vent groove is communicated with the vent hole, and the other end of the vent groove extends to the periphery of the disc surface.

3. A permanent magnet coupling according to claim 2, wherein said ventilation slots extend radially of said disc surface.

4. The permanent magnet coupling according to claim 3, wherein the ventilation slot is a rectangular slot milled integrally, the ventilation hole is a round hole milled integrally, and two side walls of the ventilation slot are tangent to the ventilation hole.

5. A permanent magnet coupling according to any of claims 1-4, wherein the heat dissipating structure comprises a base plate and at least two heat dissipating fins, the heat dissipating fins are protrudingly provided on the base plate, and the base plate is detachably mounted on the driving disk at the side of the ventilating slot.

6. A permanent magnet coupling according to claim 5, characterized in that the fins are plate-like or plate-like structures parallel to each other.

7. A permanent magnet coupling according to claim 5, characterized in that the fins are of arcuate plate-like or sheet-like configuration, coaxial with the driving disc.

8. The permanent magnet coupling according to claim 5, wherein the driving disc is provided with at least two sets of ventilation slots and ventilation holes, the ventilation slots and the ventilation holes are uniformly distributed at intervals along the circumferential direction of the disc surface, and the centers of the ventilation holes are located on the same circumference coaxial with the driving disc.

9. The permanent magnet coupling according to claim 8, wherein at least one set of heat dissipation structures is disposed on the driving disc, the heat dissipation structures are uniformly and alternately distributed along the circumferential direction of the disc surface, one set of heat dissipation structure is disposed between two sets of ventilation slots, or one set of heat dissipation structure is disposed on the side portion of each set of ventilation slots.

10. The permanent magnet coupling according to claim 1, further comprising a copper disc, wherein the driving disc is disposed between the copper disc and the heat dissipation structure, the driving disc and the copper disc are connected by a fastener.