CN216721151U - An air-cooled magnetic coupler - Google Patents

Abstract

The utility model discloses an air-cooled magnetic coupler, which comprises an input shaft and an output shaft, wherein an external fan, a male hole type magnetic conductive disc, a permanent magnet installation disc, a copper disc and a magnetic conductive disc are sequentially connected between the input shaft and the output shaft, the external fan is fixed on the input shaft through a fixing piece, the permanent magnet installation disc comprises an installation disc body, an even number of permanent magnet installation grooves not less than 2 are uniformly arranged on the side surface of one side of the installation disc body opposite to the output shaft along the circumferential direction, fan-shaped through holes uniformly distributed in an annular shape along the circumferential direction are arranged between adjacent parts of each permanent magnet installation groove, built-in fan blades are embedded into the bottoms of the fan-shaped through holes, the male hole type magnetic conductive disc is fixedly connected with the permanent magnet installation disc, the magnetic conductive disc is fixed on the output shaft, and the magnetic conductive disc is fixedly connected with the copper disc; the utility model increases the gas volume of the heat exchange between the permanent magnet and the air, ensures that the heat convection exchange between the permanent magnet mounting disc and the air is more sufficient, and improves the temperature rise phenomenon of the magnetic coupler.

Description

An air-cooled magnetic coupler

technical field

The utility model relates to the technical field of magnetic coupler equipment, in particular to an air-cooled magnetic coupler.

Background technique

Magnetic coupling can realize contactless connection to transmit torque, so it has the advantages of maintenance-free, high efficiency and energy saving, stability and reliability, and overload protection on different types of load devices with different characteristics.

During the transmission process of magnetic coupling, due to the drive by magnetic induction, there will be eddy current loss on the copper plate and a large amount of heat will be generated, which will lead to the heating of the permanent magnet material in the device through the heat transfer methods of heat conduction, heat convection and heat radiation, making the device Entering a high temperature environment causes irreversible demagnetization of the permanent magnets on the magnetic disks in the magnetic coupler due to high temperature, resulting in the failure of the magnetic coupling to operate normally. Therefore, it is particularly important to dissipate heat from the device.

Utility model content

The purpose of the present invention is to propose an air-cooled magnetic coupler to solve the problems raised in the above background technology.

To achieve the above object, the present utility model is realized by the following technical means:

An air-cooled magnetic coupler comprises an input shaft and an output shaft, wherein an external fan, a punch hole type guide disk, a permanent magnet installation disk, a copper disk, and a guide disk are sequentially connected between the input shaft and the output shaft, The external fan is fixed on the input shaft by a fixing member, and the permanent magnet mounting plate includes a mounting plate body, and the side surface of the mounting plate body opposite to the output shaft is uniformly provided with no less than 2, there are even-numbered permanent magnet installation slots, and there are fan-shaped through holes evenly distributed in a ring shape along the circumferential direction between adjacent parts of the permanent magnet installation slots, and the bottom of each fan-shaped through hole is nested into a built-in fan Leaf, the punch hole type guide disk is fixedly connected with the permanent magnet mounting disk, the guide disk is fixed on the output shaft, and the guide disk is fixedly connected with the copper disk.

Further, the punch hole-type guide disk is uniformly distributed in an even group of punch holes of not less than 2 in the circumferential direction, and each group of punch holes corresponds to the fan-shaped through holes on the permanent magnet mounting plate one by one, and the airflow passes through. When punching a punch hole, the airflow speed will increase with the reduction of the cross-sectional area of the hole, and the airflow will take away the heat of the permanent magnet while hindering the heat transfer from the copper disk to the permanent magnet disk.

Further, permanent magnets with opposite polarities are respectively installed in each of the adjacent permanent magnet installation slots evenly arranged along the circumference, and the permanent magnets are evenly installed in the permanent magnet installation slots along the circumference in the manner of adjacent polarities opposite to each other.

Further, the number of blades of the external fan is 10, and the thickness of each blade is 1 mm.

Further, each group of punch holes on the punch-hole guide disc is evenly arranged in two rows of eight holes along the circumferential direction, corresponding to the positions of the fan-shaped through holes on the permanent magnet mounting disc, and the number is an even number.

Further, an air gap is formed between the permanent magnet mounting plate and the copper plate. In practical applications, the size of the air gap can be adjusted according to the working conditions, and the air gap can be greater than or equal to 2 mm. When the magnetic coupler is in operation, the rotating motion of the permanent magnet rotor will drive the conductor rotor to rotate, and the fan-shaped through holes on the permanent magnet mounting plate increase the volume of the heat exchange gas. The external fan will speed up the air flow, increase the volume of the heat exchange gas, and hinder the heat transfer process of the conductor rotor due to the eddy current to the permanent magnet, thereby improving the temperature rise of the magnetic coupler components and increasing the magnetic force. Safety and stability of coupler components.

In the utility model, the external fan is fixed on the input shaft through the set screw, and the air flow is continuously conveyed to the punch hole during the rotation process to speed up the air flow speed. The die-hole guide disk and the permanent magnet mounting disk are fixedly connected, and the permanent magnet mounting disk and the built-in fan blades are respectively fixedly connected. The above components together form the permanent magnet rotor part as the power input component, and the input shaft is connected to the source motor or other components. The rotating power source is connected, and the copper disc and the guiding disc and the guiding disc and the output shaft are respectively fixedly connected and form the conductor rotor part together. As a power output component, the output shaft is connected with the load.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model has a simple structure, and the utility model improves the structure of the permanent magnet mounting plate. The fan-shaped through holes and the fan blades increase the volume of the gas in which the permanent magnets and the air exchange heat, so that the speed of the airflow passing through the permanent magnets is accelerated. The heat convection exchange between the permanent magnet mounting plate and the air is more sufficient, so that the heat of the permanent magnet is taken away through the air flow. The punch hole type guide plate and the external fan will also accelerate the air flow during the working process, and effectively hinder the copper The heat transfer from the disk to the permanent magnet achieves the purpose of effectively improving the temperature rise phenomenon of the magnetic coupler.

Description of drawings:

Fig. 1 is the product structure schematic diagram of the present utility model;

Fig. 2 is the structural schematic diagram of the permanent magnet mounting plate part of the product structure of the utility model;

Fig. 3 is the structural schematic diagram of the punch hole type guide disk part of the structure of the product of the present utility model;

FIG. 4 is a schematic structural diagram of an external fan of a part of the structure of the product of the present invention.

Detailed ways:

In order to make those skilled in the art better understand the technical scheme of the present utility model, the present utility model is further described below in conjunction with the embodiments:

specific embodiment

It is one of the specific embodiments of the present utility model: refer to the accompanying drawings.

In this embodiment, an air-cooled magnetic coupler includes an input shaft 1 and an output shaft 8. An external fan 2 and a punch hole type guide disk 3 are sequentially connected between the input shaft 1 and the output shaft 8. , permanent magnet mounting disk 4, copper disk 6, guide disk 7, the external fan 2 is fixed on the input shaft 1 by a fixing member, the permanent magnet mounting disk 4 includes a mounting disk body 41, the mounting disk body 41 On one side of the output shaft 8 relative to the output shaft 8, an even number of permanent magnet installation slots 42 of not less than 2 are evenly arranged along the circumferential direction, and adjacent parts of the permanent magnet installation slots 42 are provided along the circumferential direction. The fan-shaped through holes 43 evenly distributed in a ring shape, the bottom of each fan-shaped through hole 43 is nested into the built-in fan blade 5, the punch hole type guide disk 3 and the permanent magnet mounting disk 4 are fixedly connected, the said The guide disk 7 is fixed on the output shaft 8 , and the guide disk 7 is fixedly connected with the copper disk 6 .

Further, the punch hole type guide disk 3 is annularly evenly distributed along the circumferential direction with an even number of punch holes 31 of not less than 2, each group of punch holes 31 and the fan-shaped through holes 43 on the permanent magnet mounting plate 4 one by one. Correspondingly, when the airflow passes through the punch hole, the airflow speed will increase with the reduction of the cross-sectional area of the hole, and the airflow will take away the heat of the permanent magnet while hindering the heat transfer from the copper disk to the permanent magnet disk.

Further, permanent magnets with opposite polarities are respectively installed in each of the adjacent permanent magnet installation slots 42 evenly arranged along the circumference, and the permanent magnets are evenly installed in the permanent magnet installation slots 42 along the circumference in the manner of adjacent polarity opposite. .

Further, the number of blades of the external fan 2 is 10, and the thickness of each blade is 1 mm.

Further, the punch hole type guide disk 3 is provided with punch holes 31 of each group, which are two rows of eight holes evenly arranged along the circumferential direction, and correspond to the positions of the fan-shaped through holes 43 on the permanent magnet mounting disk 4, The number is even.

Further, an air gap is formed between the permanent magnet mounting plate 4 and the copper plate 6. In practical applications, the air gap can be adjusted according to the working conditions, and the air gap can be greater than or equal to 2 mm. When the magnetic coupling is in operation, the rotating motion of the permanent magnet rotor will drive the conductor rotor to rotate, and the fan-shaped through holes 43 on the permanent magnet mounting plate 4 increase the volume of the heat exchange gas, and the built-in fan blades 5 and punch hole type The conductive disk 3 and the external fan 2 will speed up the air flow, increase the volume of the heat exchange gas, and hinder the heat transfer process of the conductor rotor due to the eddy current to the permanent magnet, thereby improving the temperature rise of the magnetic coupler parts. The safety and stability of the magnetic coupler components are improved.

The specific embodiments disclosed in the present invention fall within the scope of protection of the claims of the present invention, and are the specific subordinate implementation scope of the characteristic parts of the present invention, and the protection contents of the specific embodiments are only the description of the protection scope of the claims of the present invention However, the protection scope of the present invention is not limited to the protection contents of the specific embodiments, and the protection contents of the specific embodiments should not be construed as limiting the protection scope of the claims of the present invention.

In addition, the relevant components of the present utility model are not disclosed in the description and the drawings, which does not hinder the understanding of the present utility model by those skilled in the art. Personnel's understanding of the utility model.

The connection relationship of the product structure that falls within the protection scope of the present utility model falls into the protection content of the present utility model; under the premise of not departing from the protection essence of the present utility model, conventional technical improvements are made to the structure of the product components, such as the present utility model. In the specific embodiment, the improvement to the partial structure of the product will also fall into the protection essence of the present invention.

Certain exemplary embodiments of the present invention have been described above by way of illustration only, and it goes without saying that those of ordinary skill in the art can use various methods to modify all embodiments of the present invention without departing from the scope of the present invention. The described examples are modified. Therefore, the above description is illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Unless otherwise defined, all academic and scientific terms used herein have the same meaning as understood by one of ordinary skill in the art to which this invention belongs.

In case of conflict, the definitions in this specification will control.

All percentages, parts, ratios, etc. are by weight unless otherwise indicated.

When a numerical value or numerical range, preferred range or series of lower and upper preferred values is given, it is to be understood that any lower range limit or preferred value and any larger range limit or preferred value are specifically disclosed Any range formed by any pair of numerical values, whether or not the ranges are separately disclosed. Unless otherwise indicated, where this specification describes a numerical range, the stated range is intended to include the endpoints of the range and all integers and fractions within the range.

When the terms "about" or "about" are used to describe a numerical value or an endpoint of a range, the disclosure shall be intended to include the particular numerical value or the referenced endpoint.

The usage of "a" and "an" to describe elements of the present invention is merely for convenience and to give a general view of the present invention. Unless expressly stated otherwise, the description should be read to include one or at least one.

Claims (6)

1. The utility model provides an air-cooled magnetic coupling, includes input shaft, output shaft, its characterized in that: the fan-shaped permanent magnet installation disc comprises an installation disc body, wherein an even number of permanent magnet installation grooves which are not less than 2 are uniformly formed in the side face, opposite to the output shaft, of the installation disc body along the circumferential direction, fan-shaped through holes which are uniformly distributed in an annular shape along the circumferential direction are formed between adjacent parts of each permanent magnet installation groove, built-in fan blades are embedded into the bottoms of the fan-shaped through holes, the male die magnetic conduction disc is fixedly connected with the permanent magnet installation disc, the magnetic conduction disc is fixed on the output shaft, and the magnetic conduction disc is fixedly connected with the copper disc.

2. The air-cooled magnetic coupling of claim 1, wherein: the punch hole type magnetic conductive disc is uniformly distributed with even groups of punch holes which are not less than 2 along the circumferential direction in an annular manner, and each group of punch holes correspond to the fan-shaped through holes on the permanent magnet mounting disc one by one.

3. An air-cooled magnetic coupler according to claim 1, wherein: permanent magnets with opposite polarities are respectively installed in the permanent magnet installation grooves which are evenly arranged along the circumference.

4. An air-cooled magnetic coupler according to claim 1, wherein: the number of the blades of the external fan is 10, and the thickness of each blade is 1 mm.

5. An air-cooled magnetic coupler according to claim 1, wherein: the convex die holes of each group are uniformly arranged in two rows of eight holes along the circumferential direction, correspond to the fan-shaped through holes on the permanent magnet mounting disc in position, and are even in number.

6. The air-cooled magnetic coupling of claim 1, wherein: an air gap interval is formed between the permanent magnet mounting disc and the copper disc, and the air gap interval can be larger than or equal to 2 mm.

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