Clean type magnetic driver with good sealing performance

Abstract

The utility model discloses a clean type magnetic transmission device with good sealing performance, which belongs to the technical field of magnetic transmission, and aims to solve the problems that lubricating grease in a bearing is easy to leak when a supporting system is exposed in a medium environment, and scraps generated after friction of a shaft sleeve and bearing bush assembly are easy to contaminate materials, the clean type magnetic transmission device comprises a rack, an outer magnetic assembly is arranged on the inner wall of the rack, and the outer magnetic assembly is arranged on the inner wall of the rack. The bottom end of the outer magnetic assembly is fixedly connected with an outer magnetic rotor with an annular appearance, and an inner magnetic assembly is mounted in the rack; according to the utility model, through the matching of the oil seal, the O-shaped ring and the polytetrafluoroethylene filling ring, the bearing supporting structure in the equipment realizes full sealing, materials in the reaction kettle are prevented from being polluted, the collecting tank is used for collecting abrasion chippings generated in the friction process of the shaft sleeve and the bearing bush, the abrasion chippings are prevented from falling into the reaction kettle to pollute the materials, and the service life of the reaction kettle is prolonged. The problems that the bearing system is exposed in a medium environment, so that lubricating grease in the bearing leaks easily, and chippings generated after friction of the shaft sleeve and bearing bush assembly pollute materials easily are effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic transmission, and in particular relates to a clean magnetic transmission device with good sealing performance. Background Art

[0002] Magnetic drives are widely used in food, pharmaceutical, petrochemical and other industries. They completely prevent the leakage of toxic, harmful, flammable, explosive, strong acid, strong alkali and other highly corrosive media. They are a new type of transmission device with good wear resistance, protection, anti-interference and sealing, and can operate normally under harsh environmental conditions.

[0003] When the magnetic transmission device in the prior art is in use, its bearing is directly exposed to the gas phase medium of the reactor, and the grease is in direct contact with the gas phase medium. The grease is easily damaged by the gas phase medium and lost, which in turn causes the bearing to wear. The grease in the bearing is very easy to leak to a certain extent, which is not allowed for production processes with high cleanliness requirements such as electrolytes, food, and medicine. In addition, a bearing sleeve assembly is often used on the transmission shaft of the magnetic transmission device. When the bearing sleeve assembly is rotating and rubbing, the debris generated by the friction is easy to fall into the reactor and cause pollution to the material.

[0004] Therefore, a clean magnetic transmission with good sealing performance is needed to solve the problems in the prior art that the bearing system is easily exposed to the medium environment, which may cause grease leakage in the bearing, and the debris generated by the friction of the sleeve and bearing assembly may easily contaminate the material. Utility Model Content

[0005] The purpose of the utility model is to provide a clean magnetic actuator with good sealing performance to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a clean magnetic transmission device with good sealing performance, comprising a frame, an outer magnetic assembly is installed on the inner wall of the frame, an outer magnetic rotor with a ring-shaped appearance is fixedly connected to the bottom end of the outer magnetic assembly, and an inner magnetic assembly is installed inside the frame;

[0007] The inner magnetic assembly includes a support shaft, an upper bearing and a lower bearing are sleeved on the outer surface of the support shaft, an inner magnetic rotor is rotatably connected to the outer surface of the support shaft through the upper bearing and the lower bearing, a bearing cover is arranged on the top of the upper bearing, an oil seal is fixedly connected to the top of the bearing cover, a retaining ring is sleeved on the outer surface of the bottom of the support shaft, a pressure cover is movably installed on the outer surface of the retaining ring, a spacer is tightly sleeved on the outer surface of the pressure cover, the top of the spacer fits with the bottom end of the lower bearing, the pressure cover is connected to the bottom end of the support shaft by fixing bolts, the bottom end of the inner magnetic rotor is fixedly connected to the transmission shaft, an O-ring is sleeved on the top of the outer surface of the transmission shaft, the O-ring is located between the inner magnetic rotor and the transmission shaft, and a polytetrafluoroethylene filling ring is installed in the gap between the bottom end of the upper bearing and the top end of the lower bearing.

[0008] It should be noted in the scheme that a shaft sleeve is provided on the outer surface of the transmission shaft, a bearing seat is provided on the outer surface of the shaft sleeve, a bearing shell matching the shaft sleeve is provided on the inner wall of the bearing seat, and a collecting assembly is provided on the outer surface of the transmission shaft.

[0009] It is further worth explaining that the collecting assembly includes a ring body, the top end of the ring body is connected to the bottom end of the bearing seat by a fixing bolt, a collecting groove is provided at the connection between the top end of the ring body corresponding to the sleeve and the bearing shell, and a plurality of evenly distributed annular grooves are provided at the joint between the inner surface of the ring body and the outer surface of the transmission shaft.

[0010] It should be further explained that the bottom surface of the end with a larger diameter of the support shaft is connected to an isolation sleeve via a fixing bolt, and a metal winding gasket is arranged between the bottom surface of the end with a larger diameter of the support shaft and the top of the isolation sleeve.

[0011] As a preferred embodiment, a cooling jacket with a hollow interior is tightly sleeved on the outer surface of the bearing seat, one side of the outer surface of the cooling jacket is fixedly connected to a water inlet, and the other side of the outer surface of the cooling jacket is fixedly connected to a water outlet.

[0012] As a preferred implementation, the isolation sleeve is located between the outer magnetic rotor and the inner magnetic rotor, and gaps are provided between the isolation sleeve and the outer magnetic rotor and the inner magnetic rotor.

[0013] As a preferred implementation, the inner surface of the oil seal fits the outer surface of the support shaft, and the retaining ring is composed of two half-ring structures.

[0014] Compared with the prior art, the clean magnetic actuator with good sealing performance provided by the utility model has at least the following beneficial effects:

[0015] (1) Through the cooperation of oil seals, O-rings and PTFE filling rings, the bearing support structure in the equipment is fully sealed, preventing the gas phase medium in the reactor from entering. There is no need to worry about the materials in the reactor being contaminated, and the high cleanliness production requirements can be achieved. The problem of grease leakage in the bearing caused by the support system being exposed to the medium environment is effectively avoided.

[0016] (2) Through the cooperation of the collection assembly and the cooling jacket, the collection trough collects the wear debris generated during the friction between the sleeve and the bearing to prevent the wear debris from falling into the reactor and causing contamination of the material. The cooling jacket is used to achieve cooling and reduce the temperature to prevent the vibration and breakage caused by the temperature rise expansion, thus effectively avoiding the problem of the debris generated after the friction of the sleeve and bearing assembly easily contaminating the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the front cross-sectional structure of the frame of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal magnetic assembly structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the collection component of the utility model.

[0021] In the figure: 1. frame; 2. external magnetic assembly; 3. external magnetic rotor; 4. internal magnetic assembly; 41. support shaft; 42. upper bearing; 43. lower bearing; 44. internal magnetic rotor; 45. bearing cover; 46. oil seal; 47. retaining ring; 48. pressure cover; 49. spacer; 410. transmission shaft; 411. O-ring; 412. PTFE filling ring; 5. sleeve; 6. bearing seat; 7. bearing shell; 8. collecting assembly; 81. ring body; 82. collecting tank; 83. annular groove; 9. isolation sleeve; 10. metal winding pad; 11. cooling jacket; 12. water inlet; 13. water outlet. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with embodiments.

[0023] See also Figure 1-Figure 4 The utility model provides a clean magnetic transmission with good sealing performance, including a frame 1, an outer magnetic assembly 2 is installed on the inner wall of the frame 1, an outer magnetic rotor 3 with a ring-shaped appearance is fixedly connected to the bottom end of the outer magnetic assembly 2, and an inner magnetic assembly 4 is installed inside the frame 1;

[0024] The inner magnetic assembly 4 includes a support shaft 41, the outer surface of which is sleeved with an upper bearing 42 and a lower bearing 43, the outer surface of the support shaft 41 is rotatably connected to an inner magnetic rotor 44 through the upper bearing 42 and the lower bearing 43, a bearing cover 45 is provided at the top of the upper bearing 42, and an oil seal 46 is fixedly connected to the top of the bearing cover 45, a retaining ring 47 is sleeved on the bottom outer surface of the support shaft 41, a pressure cover 48 is movably installed on the outer surface of the retaining ring 47, a spacer ring 49 is tightly sleeved on the outer surface of the pressure cover 48, the top of the spacer ring 49 is fitted with the bottom end of the lower bearing 43, the pressure cover 48 is connected to the bottom end of the support shaft 41 by fixing bolts, the bottom end of the inner magnetic rotor 44 is fixedly connected to a transmission shaft 410, an O-ring 411 is sleeved on the top of the outer surface of the transmission shaft 410, the O-ring 411 is located between the inner magnetic rotor 44 and the transmission shaft 410, and a polytetrafluoroethylene filling ring 412 is installed in the gap between the bottom end of the upper bearing 42 and the top end of the lower bearing 43.

[0025] Further as Figure 4 As shown, it is worth explaining in detail that a shaft sleeve 5 is arranged on the outer surface of the transmission shaft 410, a bearing seat 6 is arranged on the outer surface of the shaft sleeve 5, a bearing bush 7 matching the shaft sleeve 5 is arranged on the inner wall of the bearing seat 6, and a collecting assembly 8 is arranged on the outer surface of the transmission shaft 410.

[0026] Further as Figure 4 As shown, it is worth explaining in detail that the collecting assembly 8 includes a ring body 81, the top of the ring body 81 is connected to the bottom of the bearing seat 6 by fixing bolts, a collecting groove 82 is provided at the connection between the top of the ring body 81 corresponding to the sleeve 5 and the bearing shell 7, and a plurality of evenly distributed annular grooves 83 are provided at the place where the inner surface of the ring body 81 and the outer surface of the transmission shaft 410 are in contact.

[0027] Further as Figure 2 As shown, it is worth explaining in detail that the bottom surface of the end with a larger diameter of the support shaft 41 is connected to the isolation sleeve 9 through a fixing bolt, and a metal winding pad 10 is arranged between the bottom surface of the end with a larger diameter of the support shaft 41 and the top of the isolation sleeve 9.

[0028] Further as Figure 1 and Figure 4 As shown, it is worth explaining in detail that the outer surface of the bearing seat 6 is tightly sleeved with an internal hollow cooling jacket 11, one side of the outer surface of the cooling jacket 11 is fixedly connected with a water inlet 12, and the other side of the outer surface of the cooling jacket 11 is fixedly connected with a water outlet 13, so as to cool down the friction heat between the bearing shell 7 and the sleeve 5 and avoid vibration and breakage due to temperature rise expansion.

[0029] Further as Figure 2 As shown, it is worth explaining in detail that the isolation sleeve 9 is located between the outer magnetic rotor 3 and the inner magnetic rotor 44, and there are gaps between the isolation sleeve 9 and the outer magnetic rotor 3 and the inner magnetic rotor 44 to achieve contactless synchronous rotation of the outer magnetic rotor 3 and the inner magnetic rotor 44.

[0030] Further as Figure 3 As shown, it is worth explaining in detail that the inner surface of the oil seal 46 fits with the outer surface of the support shaft 41, which has a good lubrication effect on the long-term rotation of the upper bearing 42. The retaining ring 47 is composed of two half-ring structures, which is convenient for the installation of the retaining ring 47 and related structures.

[0031] In summary: when the magnetic transmission is working, the external motor drives the external magnetic assembly 2 to rotate around the isolation sleeve 9. Due to the magnetic induction effect between the external magnetic rotor 3 and the internal magnetic rotor 44, the internal magnetic assembly 4 rotates synchronously with the external magnetic assembly 2 without contact, thereby driving the transmission shaft 410 to rotate, and then driving the stirring device connected to the transmission shaft 410 to rotate, achieving the effect of contactless torque transmission. At this time, with the cooperation of the oil seal 46, the O-ring 411 and the polytetrafluoroethylene filling ring 412, the bearing support structure in the equipment is fully sealed to prevent the gas phase medium in the reactor from entering. There is no need to worry about the material in the reactor being contaminated, and the high-cleanliness production requirements can be achieved, effectively avoiding the problem of grease leakage in the bearing caused by the support system being exposed to the medium environment.

[0032] When the magnetic transmission is working, the transmission shaft 410 rotates at a high speed. At this time, the sleeve 5 and the bearing 7 move relative to each other and generate friction. The wear debris generated during the friction between the sleeve 5 and the bearing 7 falls off and falls into the collecting tank 82 for collection, so as to prevent the wear debris from falling into the reactor and polluting the materials. At the same time, cooling water is introduced into the water inlet 12, and the cooling water flows in an annular flow inside the cooling jacket 11 and then flows out from the water outlet 13 to cool the friction heat at the sleeve 5 and the bearing 7, so as to prevent the vibration and breakage caused by the temperature rise expansion. The multiple annular grooves 83 formed at the joint between the inner surface of the ring body 81 and the outer surface of the transmission shaft 410 act as a labyrinth seal, so as to prevent the high temperature in the reactor from flowing upward and causing adverse effects on the transmission, thereby ensuring that the transmission can operate normally, improving the service life of the transmission and the stability of the transmission operation, and effectively avoiding the problem that the debris generated after the friction of the sleeve and bearing assembly is easy to pollute the materials.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A clean magnetic actuator with good sealing performance, comprising a frame (1), characterized in that: An external magnetic assembly (2) is installed on the inner wall of the frame (1), an external magnetic rotor (3) having a ring-shaped appearance is fixedly connected to the bottom end of the external magnetic assembly (2), and an internal magnetic assembly (4) is installed inside the frame (1); The inner magnetic assembly (4) comprises a support shaft (41), the outer surface of the support shaft (41) is sleeved with an upper bearing (42) and a lower bearing (43), the outer surface of the support shaft (41) is rotatably connected to an inner magnetic rotor (44) via the upper bearing (42) and the lower bearing (43), a bearing cover (45) is arranged at the top end of the upper bearing (42), an oil seal (46) is fixedly connected to the top end of the bearing cover (45), a retaining ring (47) is sleeved on the outer surface of the bottom of the support shaft (41), a pressure cover (48) is movably mounted on the outer surface of the retaining ring (47), and the pressure cover (48) is rotatably mounted on the outer surface of the pressure cover (48). ) is fastened with a spacer ring (49) on the outer surface, the top of the spacer ring (49) is in contact with the bottom of the lower bearing (43), the pressure cover (48) is connected to the bottom of the support shaft (41) by fixing bolts, the bottom of the inner magnetic rotor (44) is fixedly connected to the transmission shaft (410), the top of the outer surface of the transmission shaft (410) is sleeved with an O-ring (411), the O-ring (411) is located between the inner magnetic rotor (44) and the transmission shaft (410), and a polytetrafluoroethylene filling ring (412) is installed in the gap between the bottom of the upper bearing (42) and the top of the lower bearing (43).

2. The clean magnetic actuator with good sealing performance according to claim 1, characterized in that: The outer surface of the transmission shaft (410) is provided with a shaft sleeve (5), the outer surface of the shaft sleeve (5) is provided with a bearing seat (6), the inner wall of the bearing seat (6) is provided with a bearing bush (7) matched with the shaft sleeve (5), and the outer surface of the transmission shaft (410) is provided with a collecting assembly (8).

3. The clean magnetic actuator with good sealing performance according to claim 2, characterized in that: The collecting assembly (8) comprises a ring body (81), the top end of the ring body (81) being connected to the bottom end of the bearing seat (6) by means of fixing bolts, a collecting groove (82) being provided at the top end of the ring body (81) corresponding to the connection between the shaft sleeve (5) and the bearing shell (7), and a plurality of evenly distributed annular grooves (83) being provided at the place where the inner surface of the ring body (81) and the outer surface of the transmission shaft (410) are in contact.

4. The clean magnetic actuator with good sealing performance according to claim 3 is characterized in that: The bottom surface of the end with a larger diameter of the support shaft (41) is connected to an isolation sleeve (9) via a fixing bolt, and a metal winding pad (10) is arranged between the bottom surface of the end with a larger diameter of the support shaft (41) and the top of the isolation sleeve (9).

5. The clean magnetic actuator with good sealing performance according to claim 4, characterized in that: The outer surface of the bearing seat (6) is tightly sleeved with a cooling jacket (11) with a hollow interior, one side of the outer surface of the cooling jacket (11) is fixedly connected to a water inlet (12), and the other side of the outer surface of the cooling jacket (11) is fixedly connected to a water outlet (13).

6. The clean magnetic actuator with good sealing performance according to claim 5, characterized in that: The isolation sleeve (9) is located between the outer magnetic rotor (3) and the inner magnetic rotor (44), and gaps are provided between the isolation sleeve (9) and the outer magnetic rotor (3) and the inner magnetic rotor (44).

7. The clean magnetic actuator with good sealing performance according to claim 1, characterized in that: The inner surface of the oil seal (46) is in contact with the outer surface of the support shaft (41), and the clamping ring (47) is composed of two half-ring structures.

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