A magnetic pump with a sealing structure

Abstract

The present invention provides a magnetic pump with a sealing structure, and belongs to the field of mechanical equipment. The magnetic pump includes a bearing housing, a pump cover, an external magnet, an internal magnet, and an isolation sleeve, the bearing housing is connected to the external magnet by using a drive shaft, the external magnet is sleeved outside the isolation sleeve, the isolation sleeve is sleeved outside the internal magnet, an end, distal from the external magnet, of the internal magnet is connected to a pump shaft, a support is disposed between the pump cover and the bearing housing, a sealing apparatus is disposed at a connection between the support and each of the pump cover and the bearing housing, and a magnetic sealing apparatus configured to prevent a medium in the support from leaking is disposed on the drive shaft. The magnetic pump has a plurality of sealing structures, which can completely prevent medium leakage when the isolation sleeve leaks. The magnetic pump has a good sealing effect and is suitable for large-scale industrial application.

1 . A magnetic pump with a sealing structure, wherein the magnetic pump comprises a bearing housing, a pump cover, an external magnet, an internal magnet, and an isolation sleeve, the bearing housing is connected to the external magnet by using a drive shaft ( 11 ), the external magnet is disposed outside the isolation sleeve, the isolation sleeve is sleeved outside the internal magnet, an end, distal from the external magnet, of the internal magnet is connected to a pump shaft, a support is disposed between the pump cover and the bearing housing, and a sealing apparatus is disposed at a connection between the support and each of the pump cover and the bearing housing. 
     
     
         2 . The magnetic pump with the sealing structure according to  claim 1 , wherein a magnetic sealing apparatus configured to prevent a medium in the support from leaking is disposed on the drive shaft. 
     
     
         3 . The magnetic pump with the sealing structure according to  claim 2 , wherein the magnetic sealing apparatus is fixed on the bearing housing. 
     
     
         4 . The magnetic pump with the sealing structure according to  claim 2 , wherein the magnetic sealing apparatus comprises a rotating seal ring, a stationary seal ring, a stationary seal ring O-shaped circle, a magnet, a rotating seal ring seat, a rotating seal ring O-shaped circle, and a compensation ring, the rotating seal ringer is disposed on the rotating seal ring seat, the rotating seal ring O-shaped circle is disposed at a lower end of the rotating seal ring seat, the stationary seal ring is magnetically connected to the rotating seal ring, the magnet is disposed at a lower portion, proximal to the rotating seal ring seat, of the stationary seal ring, the stationary seal ring O-shaped circle is disposed at an upper end of the stationary seal ring, and the compensation ring is disposed between the rotating seal ring seat and the stationary seal ring, and is disposed proximal to the rotating seal ring. 
     
     
         5 . The magnetic pump with the sealing structure according to  claim 1 , wherein the sealing apparatus is a sealing gasket or a sealing ring.