CN-224208432-U - Glue filling device for shielding electromagnetic bearing

Abstract

The utility model discloses a glue filling device for a shielding electromagnetic bearing, and aims to provide the glue filling device for the shielding electromagnetic bearing, which can effectively solve the problem that a shielding sleeve is bulged and damaged due to colloid extrusion and thermal expansion in the glue filling process of an electromagnetic bearing stator. The electromagnetic bearing comprises an upper sealing cover and a lower sealing cover, wherein the upper sealing cover is connected with the lower sealing cover through a connecting bolt, an annular upper sealing ring groove is formed in one side, facing the lower sealing cover, of the upper sealing cover, an upper sealing ring matched with one end of an electromagnetic bearing is arranged in the annular upper sealing ring groove, an annular lower sealing ring groove is formed in one side, facing the upper sealing cover, of the lower sealing cover, a lower sealing ring matched with the other end of the electromagnetic bearing is arranged in the annular lower sealing ring groove, and an air inlet interface is arranged in the middle of the lower sealing cover and is positioned on the inner side of the lower sealing ring or in the middle of the upper sealing ring and is positioned on the inner side of the upper sealing ring.

Inventors

• CHENG XINSHENG
• YANG BAOLIN
• CHEN RUI

Assignees

• 浙富控股集团股份有限公司

Dates

Publication Date

20260508

Application Date

20250521

Claims (10)

1. 1. The utility model provides a shielding type glue-pouring device for electromagnetic bearing which characterized in that includes: The upper sealing cover is connected with the lower sealing cover through a connecting bolt, one side of the upper sealing cover, which faces the lower sealing cover, is provided with an annular upper sealing ring groove, an upper sealing ring matched with one end of the electromagnetic bearing is arranged in the annular upper sealing ring groove, one side of the lower sealing cover, which faces the upper sealing cover, is provided with an annular lower sealing ring groove, and a lower sealing ring matched with the other end of the electromagnetic bearing is arranged in the annular lower sealing ring groove; The air inlet interface is arranged in the middle of the lower sealing cover and positioned on the inner side of the lower sealing ring, or is arranged in the middle of the upper sealing cover and positioned on the inner side of the upper sealing ring.
2. 2. The glue-pouring device for the shielding electromagnetic bearing according to claim 1, wherein the air inlet interface is provided with an air inlet valve.
3. 3. The glue-pouring device for the shielding electromagnetic bearing according to claim 1, further comprising an exhaust port, wherein the exhaust port is arranged in the middle of the lower cover and positioned inside the lower sealing ring, or the exhaust port is arranged in the middle of the upper cover and positioned inside the upper sealing ring.
4. 4. A glue-pouring device for a shielded electromagnetic bearing according to claim 3, wherein the exhaust port is provided with an exhaust valve.
5. 5. The glue-pouring device for the shielding electromagnetic bearing according to any one of claims 1 to 4, wherein the upper cover is provided with a sealing ring neglected loading detection mechanism, and the sealing ring neglected loading detection mechanism comprises: The guide hole is arranged on the upper seal cover, one end of the guide hole is communicated with the bottom of the annular upper seal ring groove, and the other end of the guide hole is communicated with one side surface of the upper seal cover, which is back to the lower seal cover; The detection rod is arranged in the guide hole in a sliding manner, and one end of the detection rod can extend into the annular upper sealing ring groove.
6. 6. The glue-pouring apparatus for a shielded electromagnetic bearing according to claim 5, wherein when one end of the detection rod on the upper cover abuts against the upper seal ring, the other end of the detection rod protrudes outside the guide hole.
7. 7. The glue-pouring device for the shielding electromagnetic bearing according to any one of claims 1 to 4, wherein the lower cover is also provided with a sealing ring neglected loading detection mechanism, and the sealing ring neglected loading detection mechanism comprises: The guide hole is arranged on the lower seal cover, one end of the guide hole is communicated with the bottom of the annular lower seal ring groove, and the other end of the guide hole is communicated with one side surface of the upper back-up seal cover of the lower seal cover; The detection rod is arranged in the guide hole in a sliding manner, and one end of the detection rod can extend into the annular lower sealing ring groove.
8. 8. The glue-pouring apparatus for a shielded electromagnetic bearing according to claim 7, wherein when one end of the detection rod on the lower cap abuts against the lower seal ring, the other end of the detection rod protrudes outside the guide hole.
9. 9. The glue-pouring apparatus for a shielded electromagnetic bearing according to any one of claims 1 to 4, wherein a cover boss is provided on a side of the upper cover facing the lower cover, and the annular upper seal ring groove is provided on an end face of the cover boss.
10. 10. The glue-pouring apparatus for a shielded electromagnetic bearing according to any one of claims 1 to 4, wherein a cap groove is provided on a side of the lower cap facing the upper cap, and the annular lower seal ring groove is provided on a bottom surface of the cap groove.

Description

Glue filling device for shielding electromagnetic bearing Technical Field The invention relates to the technical field of glue filling of electromagnetic bearings, in particular to a glue filling device for a shielding electromagnetic bearing. Background The shielding electromagnetic bearing is often used in corrosive and liquid medium environments, and compared with the traditional electromagnetic bearing, the shielding structure is required to be added to form an encapsulation for the electromagnetic bearing. For example, chinese patent publication No. CN117605760a, the name of the invention is a novel shielding electromagnetic bearing structure, which includes a stator housing, a stator compression ring, a stator core, a stator coil, a stator shielding sleeve, and the like. The heat of the conveyor belt is sealed in a sealed cavity in the electromagnetic bearing in the working process of the electromagnetic bearing, so that the problem of difficult heat dissipation exists. In addition, due to the addition of the metal shielding sleeve (the metal shielding sleeve is arranged on the inner wall of the central hole of the electromagnetic bearing stator, and the metal shielding sleeve is connected with the inner wall of the central hole in a sealing way into a whole), eddy current loss is generated at the position of the shielding sleeve, and a large amount of heat is generated. Therefore, the heat transfer of the shielded electromagnetic bearing is particularly important to its product performance. In order to meet the requirements of the electromagnetic bearing on voltage resistance strength, insulating strength, mechanical strength, heat conduction capability, mechanical vibration control and the like, the sealing cavity inside the electromagnetic bearing stator is required to be glued and solidified. However, the current glue filling of the shielding electromagnetic bearing stator has the following defects that in the process of glue filling of a closed cavity in the electromagnetic bearing stator, the shielding sleeve is bulged and damaged due to extrusion and thermal expansion of the glue, so that the shielding electromagnetic bearing is damaged. Disclosure of Invention The invention aims to provide a glue filling device for a shielding electromagnetic bearing, which can effectively solve the problem that a shielding sleeve is bulged and damaged due to colloid extrusion and thermal expansion in the glue filling process of an electromagnetic bearing stator. The technical scheme of the invention is as follows: a glue filling device for a shielding electromagnetic bearing, comprising: The upper sealing cover is connected with the lower sealing cover through a connecting bolt, one side of the upper sealing cover, which faces the lower sealing cover, is provided with an annular upper sealing ring groove, an upper sealing ring matched with one end of the electromagnetic bearing is arranged in the annular upper sealing ring groove, one side of the lower sealing cover, which faces the upper sealing cover, is provided with an annular lower sealing ring groove, and a lower sealing ring matched with the other end of the electromagnetic bearing is arranged in the annular lower sealing ring groove; The air inlet interface is arranged in the middle of the lower sealing cover and positioned on the inner side of the lower sealing ring, or is arranged in the middle of the upper sealing cover and positioned on the inner side of the upper sealing ring. The concrete use of the glue-pouring device for the shielding electromagnetic bearing in the scheme is as follows, The electromagnetic bearing stator is arranged between the upper blank cap and the lower blank cap, the upper blank cap and the lower blank cap are sequentially distributed along the axial direction of the electromagnetic bearing stator, an upper sealing ring of the upper blank cap is in sealing connection with one end face of the electromagnetic bearing stator (the upper sealing ring surrounds the outer side of a central hole of the electromagnetic bearing stator) through a locking connecting bolt, and a lower sealing ring of the lower blank cap is in sealing connection with the other end face of the electromagnetic bearing stator (the lower sealing ring surrounds the outer side of the central hole of the electromagnetic bearing stator), so that the upper blank cap and the lower blank cap are in sealing connection with the two ends of the electromagnetic bearing stator and seal the two ends of the central hole of the electromagnetic bearing stator, and a sealing cavity is formed in the central hole. The air inlet interface is communicated with a sealing cavity formed by the central hole. Then, the pressure gas is injected into the sealing cavity through the air inlet interface, so that the pressure in the sealing cavity is set to be a set value P1. And then, glue is filled into the closed cavity in the electromagnetic bearing stator by using a glue filling mac