An air-cooled speed-regulating magnetic coupling with a dust-proof structure

Abstract

A wind-cooled speed-regulating magnetic coupling with a dustproof structure belongs to the technical field of magnetic couplings. The wind-cooled speed-regulating magnetic coupling with a dustproof structure includes a first dustproof structure, a second dustproof structure, and a ventilation dustproof structure. The first dustproof structure is installed at the end of the shaft and the self-lubricating sleeve to prevent dust and particles from entering between the shaft and the self-lubricating sleeve. The second dustproof structure is installed at the end of the speed-regulating inner sleeve and the self-lubricating sleeve to prevent dust and particles from entering between the speed-regulating inner sleeve and the self-lubricating sleeve. The ventilation dustproof structure includes a ventilation box connected to the base bracket. The ventilation box is provided with a dustproof cover to prevent dust and particles from entering the cavity between the speed-regulating inner sleeve and the speed-regulating outer sleeve. The wind-cooled speed-regulating magnetic coupling with a dustproof structure can increase the service life of the shaft and the self-lubricating sleeve, improve the accuracy of the execution system movement, improve the lubrication effect between parts, and avoid internal temperature rise.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic couplings, in particular to an air-cooled speed-regulating magnetic coupling with a dust-proof structure. Background Art

[0002] Air-cooled speed-regulating magnetic couplings utilize the slippage principle between copper disks and permanent magnets to transmit torque, achieving contactless transmission between the motor and the load. These couplings offer high transmission efficiency, zero harmonic interference, and high reliability from a purely mechanical structure. They address challenges inherent in traditional transmission systems, such as the cumbersome maintenance of hydraulic couplings and severe harmonic interference from frequency converters. They are widely used in coal-fired equipment such as scraper conveyors and belt conveyors. If a high concentration of dust and particulate matter is present in the operating environment and enters the transmission mechanism of an air-cooled speed-regulating magnetic coupling, the lubricating oil (grease) and self-lubricating sleeves gradually lose their lubrication effectiveness over time due to the mixing of dust and particulate matter. This shortens the service life of the bearings and sleeves, significantly increases bearing and equipment temperatures, and reduces the safety factor of the coupling. The resistance created by dust and particulate matter between the speed regulating inner sleeve and the self-lubricating sleeve can affect the precision of the actuator's motion. The speed regulation principle of an air-cooled speed-regulating magnetic coupling is that the speed regulating inner sleeve remains relatively stationary, while the speed regulating mechanism causes the speed regulating outer sleeve to move relative to the inner sleeve. There's a cavity between the inner and outer speed regulating sleeves, and ventilation holes are required inside the coupler to ensure that the gas pressure inside the cavity is consistent with atmospheric pressure to prevent pressure buildup. During this gas exchange process, particles and dust from the external environment can enter the coupler, affecting lubrication between components and causing internal temperature increases.

[0003] At present, the air-cooled speed-regulating magnetic coupling has the following problems:

[0004] (1) Dust and particles will enter between the shaft and the self-lubricating sleeve, which will affect the service life of the self-lubricating sleeve. It will also affect the rotation of the shaft due to resistance and cause local temperature rise.

[0005] (2) Dust and particles will enter between the speed regulating inner sleeve and the speed regulating outer sleeve, which will affect the accuracy of the execution system movement and also cause local temperature rise.

[0006] (3) During the operation of the speed regulating mechanism of the coupler, the volume of the internal cavity of the coupler will increase or decrease. In order to keep the pressure of the internal cavity of the coupler consistent with the external atmospheric pressure, ventilation holes need to be processed inside the coupler so that air can be exchanged freely. Dust and particles will enter the interior of the coupler, affecting the lubrication effect between parts and causing internal temperature rise. Summary of the Invention

[0007] In order to solve the technical problems existing in the prior art, the present invention provides an air-cooled speed-regulating magnetic coupling with a dust-proof structure, which can increase the service life of the shaft and self-lubricating sleeve, improve the accuracy of the execution system movement, improve the lubrication effect between parts, and avoid internal temperature rise.

[0008] In order to achieve the above object, the technical solution of the present invention is:

[0009] An air-cooled speed-regulating magnetic coupling with a dust-proof structure comprises a magnetic coupling body, wherein the magnetic coupling body comprises a shaft, a self-lubricating sleeve, a speed-regulating inner sleeve, a speed-regulating outer sleeve and a base bracket;

[0010] The air-cooled speed-regulating magnetic coupling with a dust-proof structure further comprises a first dust-proof structure, a second dust-proof structure and a ventilation dust-proof structure;

[0011] The dustproof structure 1 is installed at the ends of the shaft and the self-lubricating sleeve to prevent dust and particles from entering between the shaft and the self-lubricating sleeve;

[0012] The second dustproof structure is installed at the ends of the speed regulating inner sleeve and the self-lubricating shaft sleeve to prevent dust and particles from entering between the speed regulating inner sleeve and the self-lubricating shaft sleeve;

[0013] The ventilation and dustproof structure includes a ventilation box connected to the base bracket, and the ventilation box is provided with a dust cover for preventing dust and particles from entering the cavity between the speed regulating inner sleeve and the speed regulating outer sleeve.

[0014] Furthermore, the dustproof structure 1 and the dustproof structure 2 are both J-shaped skeleton-free dustproof rings.

[0015] Furthermore, the dustproof structure is installed in the sealing groove of the shaft and the end cover of the self-lubricating sleeve.

[0016] Furthermore, the second dustproof structure is installed on the ends of the speed regulating inner sleeve and the self-lubricating shaft sleeve through a sealing ring gland, and the sealing ring gland is connected to the speed regulating outer sleeve.

[0017] Furthermore, a sealing rubber pad is provided between the dust cover and the ventilation box.

[0018] Furthermore, the ventilation box is connected to the exhaust hole of the base bracket through a high-pressure resin hose.

[0019] Beneficial effects of the present invention:

[0020] 1) The present invention provides a dustproof structure at the ends of the shaft and the self-lubricating sleeve to prevent dust and particles from entering between the shaft and the self-lubricating sleeve, thereby increasing the service life of the shaft and the self-lubricating sleeve;

[0021] 2) The present invention provides a second dustproof structure at the ends of the speed regulating inner sleeve and the self-lubricating shaft sleeve to prevent dust and particles from entering between the speed regulating inner sleeve and the speed regulating outer sleeve, thereby improving the accuracy of the execution system movement and avoiding the occurrence of local temperature rise;

[0022] 3) The air-cooled speed-regulating magnetic coupling of the present invention is provided with a ventilation and dust-proof structure to prevent dust and particles from entering the interior of the coupler, thereby improving the lubrication effect between parts and avoiding internal temperature rise;

[0023] 4) In practical applications, the present invention solves the problem of dust and particulate matter entering the permanent magnetic coupler for mining, and creates a good working environment for the safe operation of the permanent magnetic coupler for mining.

[0024] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main view of an air-cooled speed-regulating magnetic coupling with a dust-proof structure provided by an embodiment of the present invention;

[0026] Figure 2 1 is a partial left-side schematic diagram of an air-cooled speed-regulating magnetic coupling with a dust-proof structure provided by an embodiment of the present invention;

[0027] Figure 3 1 is a schematic diagram of the installation of the dustproof structure 1 provided in an embodiment of the present invention;

[0028] Figure 4 1 is a schematic diagram of the installation of the second dustproof structure provided by an embodiment of the present invention;

[0029] Figure 5 Schematic diagram of the installation of the ventilation and dustproof structure provided by an embodiment of the present invention;

[0030] Figure 6 is a flow chart of gas exchange when the volume of the chamber is reduced according to an embodiment of the present invention;

[0031] Figure 7 This is a flow chart of gas exchange when the volume inside the chamber increases, provided by an embodiment of the present invention.

[0032] The reference numerals in the drawings of the specification include:

[0033] 1-bearing seat, 2-speed regulating outer sleeve, 3-speed regulating inner sleeve, 4-base bracket, 5-shaft, 6-ventilation and dustproof structure, 7-high-pressure resin hose, 8-end cover, 9-dustproof structure 1, 10-self-lubricating sleeve, 11-sealing ring gland, 12-dustproof structure 2, 13-dust cover, 14-ventilation box, 15-sealing rubber pad. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, unless otherwise specified or limited, it should be noted that the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to mechanical or electrical connections, internal communication between two components, direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances. Furthermore, the terms "one" and "two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In order to solve the problems existing in the prior art, such as Figures 1 to 7 As shown, the present invention provides an air-cooled speed-regulating magnetic coupling with a dust-proof structure, comprising a magnetic coupling body, wherein the magnetic coupling body comprises a shaft 5, a self-lubricating sleeve 10, a speed-regulating inner sleeve 3, a speed-regulating outer sleeve 2 and a base bracket 4;

[0037] The air-cooled speed-regulating magnetic coupling with a dust-proof structure further comprises a dust-proof structure 1 9, a dust-proof structure 2 12 and a ventilation dust-proof structure 6;

[0038] A dustproof structure 9 is installed at the ends of the shaft 5 and the self-lubricating sleeve 10 to prevent dust and particles from entering between the shaft 5 and the self-lubricating sleeve 10;

[0039] The second dustproof structure 12 is installed at the ends of the speed regulating inner sleeve 3 and the self-lubricating sleeve 10 to prevent dust and particles from entering between the speed regulating inner sleeve 3 and the self-lubricating sleeve 10;

[0040] The ventilation and dustproof structure 6 includes a ventilation box 14 connected to the base bracket 4 . The ventilation box 14 is provided with a dust cover 13 for preventing dust and particles from entering the cavity between the speed regulating inner sleeve 3 and the speed regulating outer sleeve 2 .

[0041] like Figure 1 and Figure 2 As shown, the present invention only protects the dustproof structure 1 9, the dustproof structure 2 12 and the ventilation dustproof structure 6, as well as the sealing groove of the matching end cover 8, the sealing ring pressure cover 11 and the high-pressure resin hose 7. The dustproof structure 1 9, the dustproof structure 2 12 and the ventilation dustproof structure 6 improve the working efficiency and service life of the air-cooled speed-regulating magnetic coupling. The magnetic coupling body is an existing air-cooled speed-regulating magnetic coupling. The central axis 5, the self-lubricating sleeve 10, the speed-regulating inner sleeve 3, the speed-regulating outer sleeve 2, the base bracket 4, and the arrangement and connection of other structures of the magnetic coupling body are all referenced to the existing technology.

[0042] Dustproof structure 1 9 and dustproof structure 2 12 are both J-type skeleton-free dustproof rings. The material of the J-type skeleton-free dustproof ring is polyurethane. J-type skeleton-free dustproof rings are added between the end of the shaft 5 and the self-lubricating sleeve 10 and between the end of the speed regulating inner sleeve 3 and the self-lubricating sleeve 10 to prevent the entry of dust and particles.

[0043] The dustproof structure 9 is installed in the sealing groove of the shaft 5 and the end cover 8 of the self-lubricating sleeve 10. Figure 3 As shown, a sealing groove is machined on the end cover 8 of the shaft 5 and the self-lubricating sleeve 10, and a J-shaped skeleton-free dust ring is installed to prevent dust and particles from entering between the shaft 5 and the self-lubricating sleeve 10.

[0044] The dustproof structure 2 12 is installed at the end of the speed regulating inner sleeve 3 and the self-lubricating sleeve 10 through the sealing ring gland 11, and the sealing ring gland 11 is connected to the speed regulating outer sleeve 2. Figure 4 As shown, a sealing ring gland 11 is added to the ends of the speed regulating inner sleeve 3 and the self-lubricating sleeve 10. After the J-shaped skeletonless dust ring is installed, it is fixed by the sealing ring gland 11 to prevent dust and particles from entering between the speed regulating inner sleeve 3 and the self-lubricating sleeve 10.

[0045] A sealing rubber pad 15 is provided between the dust cover 13 and the ventilation box 14. Figure 5 As shown, a dust cover 13, a ventilation box 14 and a sealing rubber pad 15 are added, and the dust cover 13 and the ventilation box 14 are fixed to the coupler base bracket 4 by bolts. The external gas of the coupler passes through the filtering capacity of the dust cover 13, filtering out the particles, dust, etc., and then enters the ventilation box 14, and the ventilation box 14 is connected to the coupler body through the high-pressure resin hose 7.

[0046] The ventilation box 14 is connected to the exhaust hole of the base bracket 4 through the high-pressure resin hose 7. By adding the dust cover 13, the ventilation box 14 and the sealing rubber pad 15, the air hole of the ventilation box 14 is connected to the high-pressure resin hose 7. When the gas in the coupler cavity is exchanged with the outside air, a dust-proof effect is achieved.

[0047] The working principle of the air-cooled speed-regulating magnetic coupling with a dust-proof structure of the present invention is as follows:

[0048] The air-cooled speed regulating magnetic coupling transmits torque by the slip principle between the copper disk and the permanent magnet. The copper disk remains axially stationary, while the permanent magnet moves axially to produce slip. The axial motion mechanism is the actuator. Speed ​​​​regulating jacket 2 Bearing seat 1 Permanent magnet disk; supporting mechanism is base bracket 4 Axis 5 Speed ​​regulating inner sleeve 3. With the axial movement, the volume of the chamber between the speed regulating inner sleeve 3 and the speed regulating outer sleeve 2 will change at the connection part between the axial movement mechanism and the support mechanism. In order to avoid the generation of pressure, exhaust holes will be processed on the speed regulating inner sleeve 3 and the base bracket 4 to complete the gas exchange between the chamber and the outside atmosphere. The mounting hole of the ventilation box 14 is processed on the base bracket 4, and the ventilation box 14 is installed on the base bracket 4. Then, the dust cover 13 is connected to the ventilation box 14, and a sealing rubber pad 15 is placed between the two. The base bracket 4 and the ventilation box 14 are connected with a high-pressure resin hose 7 to complete the connection of the ventilation and dustproof structure 6. Figure 6 As shown, when the speed regulating inner sleeve 3 and the speed regulating outer sleeve 2 move relative to each other and the volume of the chamber decreases, the gas in the chamber flows into the outside atmosphere through the exhaust holes of the speed regulating inner sleeve 3, the exhaust holes of the base bracket 4, the high-pressure resin hose 7, the ventilation box 14, and the dust cover 13. Figure 7 As shown, when the speed regulating inner sleeve 3 and the speed regulating outer sleeve 2 move relative to each other and the volume of the chamber increases, the gas in the external atmosphere is filtered out of particles and dust through the dust cover 13, and then enters the ventilation box 14, and then flows through the high-pressure resin hose 7, the exhaust hole of the base bracket 4, and the exhaust hole of the speed regulating inner sleeve 3 to the chamber between the speed regulating inner sleeve 3 and the speed regulating outer sleeve 2.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An air-cooled speed-regulating magnetic coupling with a dustproof structure, comprising a magnetic coupling body, wherein the magnetic coupling body comprises a shaft, a self-lubricating sleeve, a speed-regulating inner sleeve, a speed-regulating outer sleeve and a base bracket, characterized in that: The air-cooled speed-regulating magnetic coupling with a dust-proof structure further comprises a first dust-proof structure, a second dust-proof structure and a ventilation dust-proof structure; The dustproof structure 1 is installed at the ends of the shaft and the self-lubricating sleeve to prevent dust and particles from entering between the shaft and the self-lubricating sleeve; The second dustproof structure is installed at the ends of the speed regulating inner sleeve and the self-lubricating shaft sleeve to prevent dust and particles from entering between the speed regulating inner sleeve and the self-lubricating shaft sleeve; The ventilation and dustproof structure includes a ventilation box connected to the base bracket, and the ventilation box is provided with a dust cover for preventing dust and particles from entering the cavity between the speed regulating inner sleeve and the speed regulating outer sleeve.

2. The air-cooled speed-regulating magnetic coupling with a dust-proof structure according to claim 1, characterized in that: The dustproof structure 1 and the dustproof structure 2 are both J-shaped frameless dustproof rings.

3. The air-cooled speed-regulating magnetic coupling with a dust-proof structure according to claim 1, characterized in that: The dustproof structure is installed in the sealing groove of the shaft and the end cover of the self-lubricating sleeve.

4. The air-cooled speed-regulating magnetic coupling with a dust-proof structure according to claim 1, characterized in that: The second dustproof structure is installed on the ends of the speed regulating inner sleeve and the self-lubricating shaft sleeve through a sealing ring gland, and the sealing ring gland is connected to the speed regulating outer sleeve.

5. The air-cooled speed-regulating magnetic coupling with a dust-proof structure according to claim 1, characterized in that: A sealing rubber pad is provided between the dust cover and the ventilation box.

6. The air-cooled speed-regulating magnetic coupling with a dust-proof structure according to claim 1, characterized in that: The ventilation box is connected to the exhaust hole of the base bracket through a high-pressure resin hose.

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