A magnetic powder brake sealing device

Abstract

This invention discloses a sealing device for a magnetic powder brake, comprising a magnetic powder brake body, a sealing module 1 installed inside the magnetic powder brake body, and an oil-separating module installed inside the sealing module 1. The oil-separating module is used to prevent oil mist from entering the interior of the magnetic powder brake body. The sealing module 1 includes a rubber baffle installed on the inner wall of the magnetic powder brake body. A clamping plate 1 and a clamping plate 2 are fitted onto the inner surface of the magnetic powder brake body. The outer wall of the other side of the clamping plate 1 has evenly arranged insertion holes. One outer wall of the clamping plate 2 has evenly arranged insertion rods, and the other outer wall of the clamping plate 2 has a sealing gasket. This invention improves the overall sealing performance of the magnetic powder brake body by using a magnetic powder brake body, a rubber baffle, clamping plate 1, and clamping plate 2, and by fitting the insertion rods and insertion holes within clamping plates 1 and 2. The sealing gasket is then fitted to the cover plate to further enhance the overall sealing performance of the magnetic powder brake body.

Description

Technical Field

[0001] This invention relates to the field of magnetic powder brake sealing technology, specifically to a magnetic powder brake sealing device. Background Technology

[0002] To eliminate backlash and extend the service life of the circular saw blade, high-speed circular saws typically add an externally rotating magnetic powder brake. At the same time, to ensure the service life of the saw blade, oil mist is used to lubricate the saw blade, which puts the magnetic powder brake in a closed oil mist environment. However, existing magnetic powder brakes all use traditional wool felt seals, which have poor sealing effect on oil mist liquids and have a simple sealing structure, which has certain defects.

[0003] The existing sealing devices have the following defects:

[0004] 1. A patent document discloses a double-end mechanical seal device, including a main body, an interface, a rubber ring, a sealing device, a fixing ring, a fixing rod, and a turntable. The fixing ring is located on the inner side of the main body, and the turntable is located inside the fixing ring. The interface is located on the outer side of the main body, and the sealing device is connected to the outer side of the main body by an interlocking method. The sealing device includes a rubber column, a limiting ring, and a support rod. The limiting ring is located inside the sealing device, and the support rod is connected to the outer side of the limiting ring by welding. The rubber column is fixedly connected to the inner side of the sealing device. By installing the sealing device on the outer side of the main body, the main advantage is that the limiting ring inside the sealing ring can support and limit the sealing device, preventing the sealing ring from being squeezed and reduced due to excessive external pressure. In addition, the rubber column inside the sealing device can improve the elasticity of the sealing device and improve the sealing performance at the connection between the sealing device and the external environment. However, the sealing device in the above-mentioned disclosure mainly considers how to improve the sealing performance at the connection between the sealing device and the external environment, without considering that the existing magnetic powder brake sealing device has a single function in use, which can only seal and intercept dust, and has poor ease of disassembly and assembly.

[0005] 2. A patent document discloses a mechanical seal device, including a mechanical body with a bearing at its center. A sealing device is installed on the mechanical body via a threaded rotation. The sealing device includes a connecting disc, a sealing disc, and a fixing disc. This mechanical seal device, by having a circular channel inside the sealing device equal in size to the bearing, fits around the bearing and stabilizes the high-speed rotating bearing, preventing vibration. Vibration of the high-speed rotating bearing can lead to excessive friction between the inner ring of the sealing device and the bearing, ultimately damaging the inner ring and reducing the sealing performance of the mechanical body. The circular channel minimizes bearing vibration, increasing the service life of the sealing device. The sealing device, assembled from a single component, is detachable and easy to install. However, the mechanical seal device in the aforementioned patent document primarily considers improving the ease of disassembly and assembly, without addressing the poor oil separation effect of existing magnetic powder brake sealing devices during use.

[0006] 3. A patent document provides a sealing device comprising: a motor reducer disposed on the upper part of the sealing device and fixed on a reducer bracket; a drive shaft connected to the motor reducer, wherein the reducer bracket and a bearing seat disposed in the middle of the sealing device are sealed together; a pair of bearings disposed in the bearing seat for automatic self-alignment; multiple oil seals disposed in the bearing cap above the bearings, below the bearing seat, and in the cavity of the stuffing box, respectively, for preventing impurities from entering the bearing seat; the stuffing box disposed below the sealing device and connected to the bearing seat; and multiple sets of packing glands disposed above the cylindrical connecting flange of the sealing device for preventing gas leakage. This sealing device mainly solves the problems of poor sealing effect, serious gas leakage, and significant environmental pollution caused by traditional sealing devices. However, the sealing device in the aforementioned disclosure mainly considers how to improve the sealing effect and does not take into account the inconvenience of replacing the sealing device in existing magnetic powder brake sealing devices, resulting in poor flexibility.

[0007] 4. A patent document discloses a sealing device, including a main body with an insertion portion and a conical surface arranged around the outer periphery of the insertion portion. The insertion portion is used to engage with the mounting hole after the solder bath is disassembled and pulled, so that the conical surface seals the mounting hole. This technical solution, where the conical surface of the insertion portion of the sealing device main body engages with the mounting hole after the solder bath is disassembled and pulled, allows for easy sealing of the mounting hole. When sealing is required, the sealing device is simply inserted into the mounting hole and rotated, thus sealing the mounting hole through the contact between the conical surface of the sealing device main body and the inner wall of the mounting hole. When removal is required, simply rotating the sealing device in the opposite direction quickly separates the conical surface of the sealing device main body from the mounting hole. This solves the problems of inadequate sealing and inconvenient disassembly / removal of mounting holes on both sides of the solder bath in related technologies. However, the sealing device in the aforementioned disclosure mainly considers how to improve the sealing performance and ease of disassembly / removal of the sealing device, without considering the poor sealing effect of existing magnetic powder brake sealing devices in environments containing bearing oil and aerosol oil. Summary of the Invention

[0008] The purpose of this invention is to provide a magnetic powder brake sealing device to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a magnetic powder brake sealing device, comprising a magnetic powder brake body, a sealing module 1 installed inside the magnetic powder brake body, an oil-separating module installed inside the sealing module 1, and the oil-separating module being used to intercept oil mist from entering the interior of the magnetic powder brake body; the sealing module 1 being used to improve the sealing performance of the oil-separating module within the magnetic powder brake body; the sealing module 1 including a rubber baffle installed on the inner wall of the magnetic powder brake body.

[0010] The inner surface of the magnetic powder brake body is fitted with a first clamping plate and a second clamping plate. One outer wall of the first clamping plate is in contact with one outer wall of the rubber baffle. The other outer wall of the first clamping plate is provided with evenly arranged insertion holes. One outer wall of the second clamping plate is provided with evenly arranged insertion rods, and the insertion rods and insertion holes are fitted together. The surfaces of the first clamping plate and the second clamping plate that are close to each other are provided with a groove, and the groove is semi-circular.

[0011] A sealing gasket is installed on the other side of the outer wall of the second card plate, and a cover plate is installed on the main body of the magnetic powder brake by bolts.

[0012] Preferably, the oil-separating module includes three sets of support plates equidistantly installed on the inner surface of the second card plate. Connecting blocks are installed on the inner surfaces of the three sets of support plates, and one end of the connecting block is in contact with the inner wall of one side of the first card plate. The outer surface of the connecting block is provided with a slot. Oil-absorbing felts are evenly arranged in the space between the first card plate and the second card plate, and the oil-absorbing felts are located inside the slots. An oil-separating membrane is installed on the outer wall of one side of the oil-absorbing felts.

[0013] Preferably, the surface of the oil-separating module is equipped with a disassembly module, which is used to remove the oil-absorbing felt filled with oil mist from the magnetic powder brake body. The disassembly module includes a pull rope installed on the outer surface of the oil-absorbing felt. One end of the oil-absorbing felt is equipped with adhesive, which is used to bond the oil-absorbing felt into a circular structure and place it in the middle of the first and second clamping plates. The outer surface of the magnetic powder brake body is provided with a slot two, which is located in the middle of the first and second clamping plates. The inner wall of the slot two is equipped with an elastic open cloth.

[0014] Preferably, a connecting sleeve is installed on one outer wall of the cover plate, a bearing is installed on the inner surface of the connecting sleeve, a storage block is installed on the inner surface of the bearing, and a storage groove is provided on one outer wall of both the connecting sleeve and the storage block. A sealing module two is installed inside the storage groove, and the sealing module two is used to improve the sealing between the bearing and the storage block. The sealing module two includes a limiting hole provided on one inner wall of the storage groove, a limiting rod is fitted inside the limiting hole, a sealing ring one is installed at one end of the limiting rod, a sealing ring two is installed on one outer wall of the sealing ring one, and the sealing ring one and the sealing ring two are fitted into the storage groove.

[0015] Preferably, one side of the outer wall of the cover plate is in contact with one side of the outer wall of the sealing gasket, and the second clamping plate is flush with one side of the outer wall of the magnetic powder brake body. The cross-section of the combined clamping plate one and clamping plate two is a U-shaped structure.

[0016] The slot and connecting block are combined into an "I" shaped structure. The oil-absorbing felt is used to absorb the oil mist that enters the body of the magnetic powder brake. The outer diameter of the oil-absorbing felt is smaller than the diameter of the first card plate, and the inner diameter of the oil-absorbing felt is between the inner diameter and the outer diameter of the slot.

[0017] One end of the pull rope extends out of the magnetic powder brake body through the inside of the elastic open cloth. The adhesive no longer has stickiness after encountering oil. The second slot is used to pull the oil-absorbing felt out from between the first and second card plates.

[0018] The outer diameter of the storage slot is larger than the outer diameter of the bearing, and the inner diameter of the storage slot is smaller than the diameter of the storage block. The first sealing ring is made of dense wool, and the second sealing ring is made of single-lip fluororubber skeleton material. The second sealing ring is used to prevent oil mist from entering the interior of the magnetic powder brake body, and the first sealing ring is used to prevent powdery particles inside the magnetic powder brake body from going out.

[0019] Preferably, an output shaft is installed inside the storage block, and one end of the output shaft is connected to the output end of the magnetic powder brake body.

[0020] Preferably, a slot is provided through one side of the outer wall of the connecting block and one side of the inner wall of the card plate, and the slot is fitted with the output shaft.

[0021] Preferably, the sealing device is used as follows:

[0022] S1. Before using the sealing device, first place the oil-absorbing felt in the slot, and fix the first and second plates together by the fitting of the insert rod and the insertion hole. Then the oil-absorbing felt can be limited in the space formed by the first and second plates.

[0023] S2. Next, insert the first sealing ring into the storage groove, and fix the second sealing ring in the storage groove by the engagement of the limiting rod and the limiting hole, so that the first sealing ring and the second sealing ring can cooperate with each other to improve the sealing between the bearing and the storage block, thereby reducing the probability of external oil mist entering the interior of the magnetic powder brake body.

[0024] S3. In subsequent use, sealing ring one and sealing ring two are used to improve the sealing performance of the magnetic powder brake body, reduce the probability of external oil mist entering the magnetic powder brake body, and effectively prevent dust particles inside the magnetic powder brake body from running out from the gap between the bearing and the storage block.

[0025] S4. The oil-separating membrane is designed to prevent the oil-absorbing felt, which is saturated with oil mist, from adhering to other oil-absorbing felts. When the oil-absorbing felt is saturated with oil mist, the adhesive no longer has stickiness, and the oil-absorbing felt no longer has a ring-shaped structure.

[0026] Preferably, step S1 further includes the following steps:

[0027] S11. Next, insert the first clamping plate into the interior of the magnetic powder brake body until the second clamping plate is flush with one side surface of the magnetic powder brake body. At the same time, the first clamping plate can fit against the rubber baffle. Then, fix the cover plate to one side of the magnetic powder brake body with bolts so that the sealing gasket can fit against the cover plate, thereby improving the sealing performance of the connection between the cover plate and the magnetic powder brake body.

[0028] Step S3 further includes the following steps:

[0029] S31. When the magnetic powder brake body is used for a long time, if the sealing ring 1 and sealing ring 2 wear out, the external oil mist will enter the magnetic powder brake body through the gap at the bearing near the output shaft. Then the oil mist entering the magnetic powder brake body will adhere to the surface of the oil-absorbing felt, so that the oil separation module can intercept the oil mist entering the magnetic powder brake body and improve the sealing performance of the magnetic powder brake body.

[0030] Step S4 further includes the following steps:

[0031] S41. At the same time, the pull rope connected to the oil-absorbing felt will also absorb the oil mist. Then, the pull rope can be pulled, and the oil-absorbing felt filled with oil mist can be taken out from the card plate one and card plate two through the elastic opening cloth in slot two, thereby facilitating the interception and absorption of oil mist by the remaining oil-absorbing felt.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] 1. This invention comprises a magnetic powder brake body, a rubber baffle, a first clamping plate, a second clamping plate, an insertion hole, a rod, a sealing gasket, and a cover plate. Before using the magnetic powder brake sealing device, the oil-absorbing felt is first placed into the clamping groove, and the first clamping plate and the second clamping plate are fixed together by the engagement of the rod and the insertion hole. Then, the first clamping plate is inserted into the interior of the magnetic powder brake body so that the first clamping plate can fit against the rubber baffle. Next, the cover plate is fixed to one end of the magnetic powder brake body by bolts, and the overall sealing performance of the magnetic powder brake body is improved by the fit between the sealing gasket and the cover plate.

[0034] 2. This invention is equipped with a support plate, a connecting block, a slot, an oil-absorbing felt, and an oil-separating membrane. The slot is designed to limit the oil-absorbing felt between the first and second slots. When the magnetic powder brake is used, external oil mist enters the interior of the magnetic powder brake body and can pass through the gap between the support plate and the connecting block to be absorbed on the surface of the oil-absorbing felt. The oil-separating membrane isolates the oil mist absorbed on the oil-absorbing felt, thus achieving a double sealing effect and increasing the oil-separating effect of the sealing device to a certain extent.

[0035] 3. This invention, by installing adhesive, a pull rope, a second slot, and an elastic open cloth, allows the adhesive to lose its stickiness after the oil-absorbing felt has absorbed a certain amount of oil mist, thus ceasing to connect the two ends of the oil-absorbing felt. Then, by pulling the pull rope connected to the oil-absorbing felt upwards, the oil-absorbing felt filled with oil mist can be pulled out from the second slot through the elastic open cloth. This allows the remaining oil-absorbing felt to continue to intercept and absorb oil mist entering the magnetic powder brake body, thereby improving the flexibility of the sealing device during use to a certain extent.

[0036] 4. This invention, by installing a connecting sleeve, a storage block, a storage groove, a limiting hole, a limiting rod, a sealing ring one, and a sealing ring two, fixes the sealing module one inside the magnetic powder brake body. Then, the sealing ring one and the sealing ring two are inserted into the storage groove, and the sealing ring one and the sealing ring two are firmly fixed in the storage groove by the engagement of the limiting rod and the limiting hole. This allows the sealing ring one and the sealing ring two to seal the gap between the bearing and the storage block, thereby reducing the probability of dust particles escaping from inside the magnetic powder brake body and external oil mist entering the magnetic powder brake body. This ensures the torque performance of the magnetic powder brake body during long-term operation and improves its service life. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 This is a schematic diagram of the assembly structure of the magnetic powder brake body and the cover plate of the present invention;

[0039] Figure 3 This is a schematic diagram of the planar assembly structure of the oil-absorbing felt of the present invention;

[0040] Figure 4 This is a schematic diagram of the planar assembly structure of the adhesive of the present invention;

[0041] Figure 5 This is a schematic diagram of the planar assembly structure of the elastic open-end fabric of the present invention;

[0042] Figure 6 This is a schematic diagram of the assembly structure of the first card plate and the second card plate of the present invention;

[0043] Figure 7 This is a schematic diagram of the planar assembly structure of sealing ring one and sealing ring two of the present invention;

[0044] Figure 8 This is a schematic diagram of the assembly structure of the sealing gasket of the present invention;

[0045] Figure 9 This is a flowchart of the process of the present invention.

[0046] In the diagram: 1. Magnetic powder brake body; 2. Rubber baffle; 3. Clamping plate one; 4. Groove one; 5. Clamping plate two; 6. Insertion hole; 7. Insert rod; 8. Sealing gasket; 9. Cover plate; 10. Support plate; 11. Connecting block; 12. Clamping groove; 13. Oil-absorbing felt; 14. Oil separator film; 15. Adhesive; 16. Pull rope; 17. Groove two; 18. Elastic open cloth; 19. Connecting sleeve; 20. Bearing; 21. Storage block; 22. Storage groove; 23. Limiting hole; 24. Limiting rod; 25. Sealing ring one; 26. Sealing ring two; 27. Output shaft; 28. Groove. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] Please see Figure 1 , Figure 2 , Figure 6 , Figure 8 and Figure 9One embodiment of the present invention provides a magnetic powder brake sealing device, comprising a magnetic powder brake body 1 and a cover plate 9. A sealing module 1 is installed inside the magnetic powder brake body 1, and an oil-separating module is installed inside the sealing module 1. The oil-separating module is used to intercept oil mist from entering the interior of the magnetic powder brake body 1. The sealing module 1 is used to improve the sealing performance of the oil-separating module within the magnetic powder brake body 1. The sealing module 1 includes a rubber baffle 2 installed on the inner wall of the magnetic powder brake body 1. A clamping plate 3 and a clamping plate 5 are fitted onto the inner surface of the magnetic powder brake body 1, and one side of the outer wall of the clamping plate 3 is flush with one side of the rubber baffle 2. The outer walls are fitted together. The other outer wall of the first card 3 is provided with evenly arranged insertion holes 6. The outer wall of the second card 5 is installed with evenly arranged insertion rods 7, and the insertion rods 7 and insertion holes 6 are fitted together. The surfaces of the first card 3 and the second card 5 that are close to each other are provided with slots 4, and the slots 4 are semi-circular. The other outer wall of the second card 5 is provided with a sealing gasket 8. The magnetic powder brake body 1 is fitted with a cover plate 9 by bolts. The outer wall of the cover plate 9 is fitted with the outer wall of the sealing gasket 8. The second card 5 is flush with the outer wall of the magnetic powder brake body 1. The cross section of the first card 3 and the second card 5 combined together is a U-shaped structure.

[0051] Furthermore, before using the sealing device, the oil-absorbing felt 13 is first placed in the slot 12. Then, the oil-absorbing felt 13 is limited in the space composed of the first clamping plate 3 and the second clamping plate 5 by the engagement of the insert rod 7 and the insertion hole 6. Next, the first clamping plate 3 is inserted into the interior of the magnetic powder brake body 1 as needed, so that the first clamping plate 3 can fit against the rubber baffle 2. Then, the first clamping plate 3 and the second clamping plate 5 can be fixed inside the magnetic powder brake body 1. Then, the cover plate 9 is fixed to one side of the magnetic powder brake body 1 with bolts, and the sealing gasket 8 is used to improve the connection and sealing between the cover plate 9 and the magnetic powder brake body 1. Then, the installation of the sealing module 1 can be completed, so that the sealing module 1 can effectively prevent harmful substances such as oil and water from entering the interior of the magnetic powder brake body 1, and at the same time prevent the internal solid powder from flowing out, thereby more effectively extending the service life of the magnetic powder brake body 1, and ensuring the stable performance of the magnetic powder brake body 1 in use.

[0052] Please see Figure 3 , Figure 4 and Figure 5An embodiment of the present invention provides a magnetic powder brake sealing device, comprising a support plate 10 and an elastic open cloth 18. The oil-separating module includes three sets of support plates 10 equidistantly mounted on the inner surface of a second clamping plate 5. Connecting blocks 11 are mounted on the inner surfaces of the three sets of support plates 10, with one end of each connecting block 11 abutting against one side of the inner wall of a first clamping plate 3. A groove 12 is provided on the outer surface of the connecting block 11. Oil-absorbing felts 13 are uniformly arranged within the space between the first clamping plate 3 and the second clamping plate 5, located inside the groove 12. An oil-separating membrane 14 is installed on one side of the outer wall of the oil-absorbing felt 13. The groove 12 and the connecting block 11 are combined to form an "I"-shaped structure. The oil-absorbing felt 13 is used to absorb oil mist entering the interior of the magnetic powder brake body 1. The outer diameter of the oil-absorbing felt 13 is smaller than the diameter of the first clamping plate 3, and the inner diameter of the oil-absorbing felt 13 is located within the range specified in the original text. Between the inner and outer diameters of the slot 12, a disassembly module is installed on the surface of the oil-separating module. The disassembly module is used to remove the oil-absorbing felt 13, which is full of oil mist, from the magnetic powder brake body 1. The disassembly module includes a pull rope 16 installed on the outer surface of the oil-absorbing felt 13. One end of the oil-absorbing felt 13 is fitted with adhesive 15, which is used to bond the oil-absorbing felt 13 into a ring structure and place it between the first card plate 3 and the second card plate 5. The outer surface of the magnetic powder brake body 1 is provided with a slot 17, which is located between the first card plate 3 and the second card plate 5. The inner wall of the slot 17 is fitted with an elastic open cloth 18. One end of the pull rope 16 extends out of the magnetic powder brake body 1 through the interior of the elastic open cloth 18. The adhesive 15 loses its stickiness after encountering oil. The slot 17 is used to pull the oil-absorbing felt 13 out from between the first card plate 3 and the second card plate 5.

[0053] Furthermore, before using the sealing device, the oil-absorbing felt 13 is first positioned between the first clamping plate 3 and the second clamping plate 5 by the clamping groove 12. After the first sealing ring 25 and the second sealing ring 26 wear, external oil mist will enter the magnetic powder brake body 1 through the gap at the bearing 20. Then, the oil mist entering the magnetic powder brake body 1 will pass through the gap between the support plate 10 and the connecting block 11 and be absorbed on the surface of the oil-absorbing felt 13. The oil mist absorbed on the oil-absorbing felt 13 is isolated by the oil-separating film 14, thereby achieving a double sealing effect. The sealing effect can increase the oil-blocking effect of the sealing device to a certain extent. When the oil-absorbing felt 13 is full of oil mist, the adhesive 15 is no longer sticky. Then, the pull rope 16 connected to the oil-absorbing felt 13 is pulled upwards, and after passing through the slot 17, the oil-absorbing felt 13 full of oil mist is taken out from the magnetic powder brake body 1 through the elastic open cloth 18. This provides convenience for the remaining oil-absorbing felt 13 to intercept and absorb oil mist, thereby improving the service life of the magnetic powder brake body 1 to a certain extent.

[0054] Please see Figure 7One embodiment of the present invention provides a magnetic powder brake sealing device, comprising a connecting sleeve 19 and a slot 28. The connecting sleeve 19 is installed on one outer wall of a cover plate 9. A bearing 20 is installed on the inner surface of the connecting sleeve 19, and a storage block 21 is installed on the inner surface of the bearing 20. A storage groove 22 is provided on one outer wall of both the connecting sleeve 19 and the storage block 21. A sealing module 2 is installed inside the storage groove 22, and the sealing module 2 is used to improve the sealing performance between the bearing 20 and the storage block 21. The sealing module 2 includes a limiting hole 23 provided on one inner wall of the storage groove 22. A limiting rod 24 is fitted inside the limiting hole 23. A sealing ring 25 is installed at one end of the limiting rod 24, and a sealing ring 25 is installed on one outer wall of the sealing ring 25. 26, and sealing ring 1 25 and sealing ring 26 are fitted into the storage groove 22. The outer diameter of the storage groove 22 is larger than the outer diameter of the bearing 20, and the inner diameter of the storage groove 22 is smaller than the diameter of the storage block 21. Sealing ring 1 25 is made of dense wool, and sealing ring 26 is made of single-lip fluororubber skeleton material. Sealing ring 26 is used to prevent oil mist from entering the interior of the magnetic powder brake body 1, and sealing ring 1 25 is used to prevent powder particles inside the magnetic powder brake body 1 from going out. An output shaft 27 is installed inside the storage block 21, and one end of the output shaft 27 is connected to the output end of the magnetic powder brake body 1. A slot 28 is provided through one side of the outer wall of the connecting block 11 and one side of the inner wall of the card plate 3, and the slot 28 is fitted into the output shaft 27.

[0055] Furthermore, when installing the second sealing module, firstly, the sealing ring 25 is inserted into the storage groove 22, and the sealing ring 25 and the second sealing ring 26 are fixed in the storage groove 22 by the engagement of the limiting rod 24 and the limiting hole 23. Then, the sealing ring 25 can reduce the probability of dust particles escaping from the inside of the magnetic powder brake body 1, and the sealing ring 26 can reduce the probability of external oil mist entering the inside of the magnetic powder brake body 1. This can improve the sealing performance between the bearing 20 and the storage block 21 to a certain extent, so that no oil mist will enter the inside of the magnetic powder brake body 1 when the output shaft 27 rotates. The two sealing devices achieve a good sealing effect, thereby ensuring the torque performance of the magnetic powder brake body 1 during long-term operation.

[0056] Furthermore, the method of using this sealing device is as follows:

[0057] S1. Before using the sealing device, first place the oil-absorbing felt 13 in the slot 12, and fix the first card plate 3 and the second card plate 5 together by the engagement of the insert rod 7 and the insertion hole 6. Then the oil-absorbing felt 13 can be limited in the space formed by the first card plate 3 and the second card plate 5.

[0058] S2. Next, the sealing ring 25 is inserted into the storage groove 22, and the sealing ring 26 is fixed in the storage groove 22 by the engagement of the limiting rod 24 and the limiting hole 23, so that the sealing ring 25 and the sealing ring 26 can cooperate with each other to improve the sealing between the bearing 20 and the storage block 21, thereby reducing the probability of external oil mist entering the magnetic powder brake body 1.

[0059] S3. In subsequent use, sealing ring 1 25 and sealing ring 26 are used to improve the sealing performance of the magnetic powder brake body 1, reduce the probability of external oil mist entering the magnetic powder brake body 1, and effectively prevent dust particles in the magnetic powder brake body 1 from running out from the gap between the bearing 20 and the storage block 21.

[0060] S4. The oil-separating membrane 14 is designed to prevent the oil-absorbing felt 13, which is full of oil mist, from adhering the oil mist to other oil-absorbing felts 13. When the oil-absorbing felt 13 is full of oil mist, the adhesive 15 no longer has stickiness, and then the oil-absorbing felt 13 no longer has a ring-shaped structure.

[0061] Step S1 also includes the following steps:

[0062] S11. Next, insert the first clamping plate 3 into the interior of the magnetic powder brake body 1 until the second clamping plate 5 is flush with one side surface of the magnetic powder brake body 1. At the same time, the first clamping plate 3 can fit with the rubber baffle 2. Then, fix the cover plate 9 to one side of the magnetic powder brake body 1 with bolts so that the sealing gasket 8 can fit with the cover plate 9, thereby improving the sealing performance of the connection between the cover plate 9 and the magnetic powder brake body 1.

[0063] Step S3 also includes the following steps:

[0064] S31. When the magnetic powder brake body 1 is used for a long time, if the sealing ring 25 and the sealing ring 26 wear out, the external oil mist will enter the magnetic powder brake body 1 through the gap at the bearing 20 near the output shaft 27. Then the oil mist entering the magnetic powder brake body 1 will adhere to the surface of the oil-absorbing felt 13, so that the oil separation module can intercept the oil mist entering the magnetic powder brake body 1 and improve the sealing performance of the magnetic powder brake body 1.

[0065] Step S4 also includes the following steps:

[0066] S41. At the same time, the pull rope 16 connected to the oil-absorbing felt 13 will also absorb oil mist. Then the pull rope 16 can be pulled, and the oil-absorbing felt 13 filled with oil mist can be taken out from the card plate 1 3 and card plate 2 5 through the elastic open cloth 18 in the slot 2 17, thereby facilitating the remaining oil-absorbing felt 13 to intercept and absorb oil mist.

[0067] Working principle: Before using the sealing device, first place the oil-absorbing felt 13 in the slot 12, and fix the first card plate 3 and the second card plate 5 together by the fitting of the insert rod 7 and the insertion hole 6. Then insert the first card plate 3 into the interior of the magnetic powder brake body 1. Then fix the cover plate 9 to one side of the magnetic powder brake body 1 by bolts, so that the sealing gasket 8 can fit with the cover plate 9, thereby improving the overall sealing performance of the magnetic powder brake body 1.

[0068] Next, sealing ring 25 is inserted into the storage groove 22, and sealing ring 26 is fixed in the storage groove 22 by the engagement of limiting rod 24 and limiting hole 23. In subsequent use, sealing ring 25 and sealing ring 26 improve the sealing between bearing 20 and storage block 21, thereby reducing the probability of external oil mist entering the magnetic powder brake body 1. It can also effectively prevent dust particles inside the magnetic powder brake body 1 from escaping from the gap between bearing 20 and storage block 21. After sealing ring 25 and sealing ring 26 wear, external oil mist will pass through the gap at bearing 20. The oil mist entering the magnetic powder brake body 1 will then adhere to the surface of the oil-absorbing felt 13. When the oil-absorbing felt 13 is full of oil mist, the adhesive 15 will no longer be sticky. Then, the pull rope 16 connected to the oil-absorbing felt 13 will also absorb the oil mist. Then, the pull rope 16 can be pulled upwards, and after passing through the slot 17, the oil-absorbing felt 13 full of oil mist will be removed from the magnetic powder brake body 1 through the elastic open cloth 18. This facilitates the remaining oil-absorbing felt 13 to intercept and absorb oil mist, thereby improving the service life of the magnetic powder brake body 1 to a certain extent.

[0069] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sealing device for a magnetic powder brake, comprising a magnetic powder brake body (1), characterized in that: The magnetic powder brake body (1) is equipped with a sealing module 1, which is equipped with an oil separator module. The oil separator module is used to intercept oil mist from entering the magnetic powder brake body (1). The sealing module 1 is used to improve the sealing performance of the oil separator module in the magnetic powder brake body (1). The sealing module 1 includes a rubber baffle (2) installed on the inner wall of the magnetic powder brake body (1). The inner surface of the magnetic powder brake body (1) is fitted with a first card plate (3) and a second card plate (5), and one side of the outer wall of the first card plate (3) is in contact with one side of the outer wall of the rubber baffle (2). The other side of the first card plate (3) is provided with evenly arranged insertion holes (6). One side of the second card plate (5) is provided with evenly arranged insertion rods (7), and the insertion rods (7) and the insertion holes (6) are fitted together. The surfaces of the first card plate (3) and the second card plate (5) that are close to each other are provided with a slot (4), and the slot (4) is semi-circular. A sealing gasket (8) is installed on the outer wall of the other side of the card plate 2 (5), and a cover plate (9) is installed on the main body (1) of the magnetic powder brake by bolts. The outer wall of one side of the cover plate (9) is in contact with the outer wall of one side of the sealing gasket (8), and the second card plate (5) is flush with the outer wall of one side of the magnetic powder brake body (1). The cross section of the combined card plate (3) and the second card plate (5) is in the shape of a concave "U". The slot (12) and the connecting block (11) are combined together to form an "I" shaped structure. The oil-absorbing felt (13) is used to absorb the oil mist entering the body (1) of the magnetic powder brake. The outer diameter of the oil-absorbing felt (13) is smaller than the diameter of the card plate (3). The inner diameter of the oil-absorbing felt (13) is between the inner diameter and the outer diameter of the slot (12). One end of the pull rope (16) extends out of the magnetic powder brake body (1) through the inside of the elastic open cloth (18). The adhesive (15) loses its stickiness after encountering oil. The second slot (17) is used to pull the oil-absorbing felt (13) out from between the first plate (3) and the second plate (5). The outer diameter of the storage groove (22) is larger than the outer diameter of the bearing (20), and the inner diameter of the storage groove (22) is smaller than the diameter of the storage block (21). The sealing ring one (25) is made of dense wool, and the sealing ring two (26) is made of single-lip fluororubber skeleton material. The sealing ring two (26) is used to prevent oil mist from entering the interior of the magnetic powder brake body (1), and the sealing ring one (25) is used to prevent the powder particles inside the magnetic powder brake body (1) from going out.

2. The magnetic powder brake sealing device according to claim 1, characterized in that: The oil-separating module includes three sets of support plates (10) equidistantly installed on the inner surface of the second plate (5). Connecting blocks (11) are installed on the inner surface of the three sets of support plates (10), and one end of the connecting block (11) is attached to the inner wall of one side of the first plate (3). The outer surface of the connecting block (11) is provided with a slot (12). Oil-absorbing felts (13) are evenly arranged in the space between the first plate (3) and the second plate (5). The oil-absorbing felts (13) are located inside the slot (12), and an oil-separating membrane (14) is installed on the outer wall of one side of the oil-absorbing felts (13).

3. The magnetic powder brake sealing device according to claim 2, characterized in that: The surface of the oil-separating module is equipped with a disassembly module, which is used to remove the oil-absorbing felt (13) filled with oil mist from the magnetic powder brake body (1). The disassembly module includes a pull rope (16) installed on the outer surface of the oil-absorbing felt (13). One end of the oil-absorbing felt (13) is equipped with adhesive (15), and the adhesive (15) is used to bond the oil-absorbing felt (13) into a ring structure and place it in the middle of the first card plate (3) and the second card plate (5). The outer surface of the magnetic powder brake body (1) is provided with a slot second (17), and the slot second (17) is located in the middle of the first card plate (3) and the second card plate (5). The inner wall of the slot second (17) is equipped with an elastic open cloth (18).

4. The magnetic powder brake sealing device according to claim 1, characterized in that: A connecting sleeve (19) is installed on one side of the outer wall of the cover plate (9). A bearing (20) is installed on the inner surface of the connecting sleeve (19). A storage block (21) is installed on the inner surface of the bearing (20). A storage groove (22) is provided on one side of the outer wall of both the connecting sleeve (19) and the storage block (21). A sealing module 2 is installed inside the storage groove (22). The sealing module 2 is used to improve the sealing between the bearing (20) and the storage block (21). The sealing module 2 includes a limiting hole (23) provided on one side of the inner wall of the storage groove (22). A limiting rod (24) is fitted inside the limiting hole (23). A sealing ring 1 (25) is installed at one end of the limiting rod (24). A sealing ring 2 (26) is installed on one side of the outer wall of the sealing ring 1 (25). The sealing ring 1 (25) and the sealing ring 2 (26) are fitted into the storage groove (22).

5. A magnetic powder brake sealing device according to claim 4, characterized in that: The storage block (21) has an output shaft (27) installed inside, and one end of the output shaft (27) is connected to the output end of the magnetic powder brake body (1).

6. A magnetic powder brake sealing device according to claim 2, characterized in that: The outer wall of one side of the connecting block (11) and the inner wall of one side of the card plate (3) are both provided with slots (28), and the slots (28) are fitted with the output shaft (27).

7. A method of using a magnetic powder brake sealing device according to any one of claims 1-6, characterized in that, The sealing device is used as follows: S1. Before using the sealing device, first place the oil-absorbing felt (13) in the slot (12), and fix the first card plate (3) and the second card plate (5) together by fitting the insert rod (7) and the insertion hole (6). Then the oil-absorbing felt (13) can be limited in the space formed by the first card plate (3) and the second card plate (5). S2. Next, seal ring one (25) is inserted into the storage groove (22), and seal ring two (26) is fixed in the storage groove (22) by the engagement of the limiting rod (24) and the limiting hole (23), so that seal ring one (25) and seal ring two (26) can cooperate with each other to improve the sealing between the bearing (20) and the storage block (21), thereby reducing the probability of external oil mist entering the magnetic powder brake body (1); S3. In subsequent use, sealing ring one (25) and sealing ring two (26) are used to improve the sealing performance of the magnetic powder brake body (1), reduce the probability of external oil mist entering the magnetic powder brake body (1), and effectively prevent dust particles in the magnetic powder brake body (1) from running out from the gap between the bearing (20) and the storage block (21). S4. The setting of the oil-separating film (14) is to prevent the oil-absorbing felt (13) that has absorbed oil mist from adhering to other oil-absorbing felts (13). When the oil-absorbing felt (13) is full of oil mist, the adhesive (15) no longer has stickiness, and then the oil-absorbing felt (13) no longer has a ring structure.

8. The method of using the magnetic powder brake sealing device according to claim 7, characterized in that, S1 also includes the following steps: S11. Next, insert the first card plate (3) into the interior of the magnetic powder brake body (1) until the second card plate (5) is flush with one side surface of the magnetic powder brake body (1). At the same time, the first card plate (3) can fit with the rubber baffle (2). Then, fix the cover plate (9) to one side of the magnetic powder brake body (1) with bolts so that the sealing gasket (8) can fit with the cover plate (9), thereby improving the sealing performance of the connection between the cover plate (9) and the magnetic powder brake body (1). S3 also includes the following steps: S31. When the magnetic powder brake body (1) is used for a long time, if the sealing ring 1 (25) and sealing ring 2 (26) are worn, the external oil mist will enter the magnetic powder brake body (1) through the gap at the bearing (20) near the output shaft (27). Then the oil mist entering the magnetic powder brake body (1) will adhere to the surface of the oil-absorbing felt (13), so that the oil separation module can intercept the oil mist entering the magnetic powder brake body (1) and improve the sealing performance of the magnetic powder brake body (1). S4 also includes the following steps: S41. At the same time, the pull rope (16) connected to the oil-absorbing felt (13) will also absorb the oil mist. Then the pull rope (16) can be pulled, and the oil-absorbing felt (13) filled with oil mist can be taken out from the first card plate (3) and the second card plate (5) through the elastic open cloth (18) in the slot two (17), thereby facilitating the remaining oil-absorbing felt (13) to intercept and absorb the oil mist.

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